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Glossary / Terms
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- ACTH- A pituitary hormone that stimulates the
adrenal glands. High levels can lead to fertility problems.
- ADHESION- Scar tissue that attaches to the surfaces
of organs, the abdominal cavity, fallopian tubes, or inside
the uterus. Adhesions may prevent egg pick up, transport
of the egg, and implantation of the embryo in the uterus.
- AMENORRHEA- The cessation of the menstrual period
for six months or more at a time. Primary Amenorrhea: when
a woman has never menstruated; Secondary Amenorrhea: When
a woman has menstruated at one time, but she has not had
a period for six months or more.
- ANDROGENS- Male sex hormones produced by the adrenal
gland. Excess androgens in the woman may lead to increased
hair growth, acne and a deepened voice. Elevated levels
of androgens may be found with polycystic ovaries, or with
a tumor in the pituitary gland, adrenal gland or ovary.
- ANDROLOGIST- An MD/Ph.D. who specializes in the
study of male reproduction.
- ANOVULATION- Total absence of ovulation. Menses
may still occur although there is a failure to ovulate-a
failure of an ovary to release an egg.
- ANTAGON- A GnRH antagonist drug used to inhibit
premature LH surges.
- ANTIBODIES- Proteins made by the body to attack
or fight foreign substances. Antibodies normally prevent
infection; however they can be made against sperm, sometimes
causing fertility problems. Either the male or female partner
may produce sperm antibodies.
- ANTISPERM ANTIBODIES- Antisperm antibodies attach
themselves to the sperm and can inhibit movement. In men,
these antibodies may be a response to injury or surgery
to the testes when the blood-sperm barrier is broken. Antisperm
antibodies may affect the ability to fertilize an egg.
- ARTIFICIAL INSEMINATION- Placing sperm into the
cervix of the uterus (intracervical insemination-ICI) or
directly into the uterine cavity (intrauterine insemination-
IUI). The sperm is usually washed then injected through
a catheter. This procedure is used for both donor (Therapeutic
Donor Insemination-TDI) and male partner's sperm. This technique
is used for sexual dysfunction, sperm-mucus interaction,
problems, for poor semen, and for donor sperm. Intrauterine
insemination is more effective than intracervical insemination
in helping couples become pregnant.
- ASHERMAN'S SYNDROME- The uterine walls are scarred
to one another-usually a result of uterine inflammation,
pelvic inflammatory disease (PID), or past surgery of the
uterus. Past surgery may include a D&C, cesarean section,
removal of fibroid tumors.
- ASSISTED HATCHING- A procedure in which a small
hole is made in the outer shell around the embryo (zona
pellucida) before embryo transfer to aid in implantation
of the embryo and pregnancy. It may be considered for women
who are age 38 and older, women who have a history of abnormally
thick zona pellucida, and for couples who have not become
pregnant with past IVF cycles.
- ASSISTED REPRODUCTIVE TECHNOLOGY (ART)- A procedure
that involves the surgical removal of eggs from the ovary
to assist in fertilization of the egg and sperm. In Vitro
Fertilization (IVF), Intracytoplasmic Sperm Injection (ICSI),
assisted hatching, microscopic epididymal sperm aspiration
(MESA), testicular sperm aspiration (TESA) are the most
common ART procedures.
- ASTHENOZOOSPERMIA- Low sperm motility defined
as less than 50% of sperm are moving in a semen sample.
This condition is considered to be a major cause of infertility
if motility is 40% or less.
- AZOOSPERMIA- The absence of sperm in the seminal
fluid. This may be due to a blockage or an impairment of
sperm production.
- BASAL BODY TEMPERATURE- The body temperature of
a person recorded immediately upon awakening, before any
activity is undertaken. The temperature can be taken orally
or rectally. The temperature is recorded daily on a graph,
which can show some evidence of ovulation.
- BETA hCG TEST- (BhCG)- Blood test to detect pregnancy
and to evaluate embryonic development.
- BICORNUATE UTERUS- A congenital (present at birth)
malformation of the uterus where the upper part of the uterus
is divided into two parts. The outer appearance of the uterus
is heart shaped. This is not a clear cause of infertility.
In contrast, a septate uterus is a uterus divided into right
and left halves by a wall of tissue (septum). Women with
a septate uterus have an increased chance of early pregnancy
loss. The outer surface shape of the uterus is round and
normal in appearance.
- BLASTOCYST- An embryo in its 5th to 6th days of
development.
- BLASTOMERE- A single cell in an embryo, which
can divide at its own rate.
- BLIGHTED OVUM (Egg)- A general term used to mean
a fertilized egg that fails to survive after implantation
in the uterus. Pelvic ultrasound may show an empty gestational
sac in the uterus. This means the embryo died earlier and
is no longer present. However, the placenta and sac are
still present in the uterus. You may still feel pregnant
during this time. You may have no symptoms of pregnancy
loss either.
- BROMOCRIPTINE (Parlodel)- An oral medication used
to reduce prolactin hormone levels. It can reduce the size
of prolactin secreting pituitary tumor. This medication
may cause dizziness and upset stomach. It may also be effective
when the tablet is placed in the vagina.
- CANCELED CYCLE- An ART cycle in which ovarian
stimulation was carried out but was stopped before eggs
were retrieved. Cycles are canceled for many reasons: there
may be too few or too many eggs developing; the uterine
lining may not be optimal for embryo replacement; the patient
may become ill; or the patient may stop treatment.
- CANDIDIASIS (Yeast Infection)- A vaginal infection
that may cause burning or itching.
- CBC (Complete Blood Count)- A routine preoperative
blood test that gives information regarding infection and
anemia.
- CERVICAL MUCUS- Secretions produced by the cervix
which vary in viscosity according to the phase of the menstrual
cycle; it becomes penetrable by sperm in the days preceding
ovulation. The mucous fills the opening of the cervix; most
of the time, it is a thick plug preventing sperm and bacteria
from entering the uterus. At mid-cycle, estrogen causes
the mucus to become thin, watery and stretchy-allowing sperm
to enter uterus.
- CERVIX- The lower section of the uterus which
protrudes into the vagina and dilates during labor to allow
the passage of the infant.
- CERVICAL STENOSIS- A blockage of the cervical
canal. This is usually from complications of cervical surgery
and rarely from congenital defects.
- CETROTIDE (CETRORELIX)- A GnRH antagonist drug
used to inhibit premature LH surges.
- CHEMICAL PREGNANCY- A positive hCG level in the
blood that fails to continue to rise and does not lead to
a clinical pregnancy.
- CHLAMYDIA- This is a microorganism that may be
transmitted by sexual contact. This microorganism could
exist in the reproductive tract without symptoms and cause
infertility. If present, both partners must be treated.
The test for chlamydia involves obtaining a sample of vaginal
fluid and culturing this in the laboratory under conditions
suited to the chlamydia bacterium. Chlamydia causes infertility
by damaging the fallopian tubes. This damage can be in the
form of scar (adhesions) with partial or complete blockage
of the fallopian tubes. It can also cause infertility create
scarring inside the pelvis, around both of the tubes, ovaries
and intestines. Chlamydia can lead to scarring in men reproductive
tract leading to infertility.
- CHOCOLATE CYST- An endometrioma. A cyst that is
filled with old blood and contains endometriosis lining
in its inner surface. Endometriosis invades an ovary and
causes the cyst. Usually treatment can be carried out during
laparoscopic surgery.
- CHROMOSOME- A thread-like strand of DNA and protein
in the nucleus of the cell that carries genetic information.
The human has forty-six chromosomes-twenty-three coming
from the egg and twenty-three coming from the sperm. Two
X-chromosomes are present in a female and an X and a Y are
present in a male.
- CHROMOTUBATION- During surgery, the injection
of a colored dye into the cervix and observation of the
tubes in order to evaluate the status of the fallopian tubes.
If dye is not observed to flow through a tube, then the
tube may be considered blocked.A blocked tube may prevent
an egg from being fertilized.
- CILIA- Tiny hairlike projections on the cells
lining the interior of the fallopian tubes. The cilia move
the egg inward and the sperm outward to the isthmic-ampullary
junction of the tube where fertilization occurs. Later,
the cilia move the embryo to the uterus for implantation.
The cilia can be damaged by infections. Damage to the cilia
can lead to infertility.
- CLINICAL PREGNANCY- Increased hCG secretion and
pelvic ultrasound evidence showing an intrauterine gestational
sac, fetus and fetal heart motion (cardiac activity). This
does not exclude an ectopic pregnancy.
- CLOMIPHENE CITRATE- A fertility drug taken orally
that stimulates ovulation through the release of gonadotropins
from the pituitary gland.
- COMPACTION- A stage of early embryo development
between the eight-cell and the blastocyst stage. Around
Day 4 of in vitro culture, when the embryo consists of approximately
eight cells, the cells merge together. At this stage the
embryo is referred to as a morula.
- CONE BIOPSY- Surgical removal of pre-cancerous
cells from the cervix by cutting a cone-shaped piece out.
This procedure may damage the cervix and disrupt mucus production
or cause an incompetent cervix. An alternative procedure
is the LEEP. Under microscopic control, an electrified loop
is used to remove a more controlled amount of cervix, which
decreases the risk of damage to the cervix. Women who have
had these procedures performed may be at risk for cervical
stenosis or incompetent cervix.
- CONGENITAL- A characteristic or defect present
at birth, acquired during pregnancy, but not necessarily
hereditary.
- CONGENITAL ADRENAL HYPERPLASIA- An inborn condition
characterized by elevated androgens. The androgens suppress
the pituitary gland and interfere with spermatogenesis or
ovulation. Females may have ambiguous or male-like genitalia
from the excess androgen. Women may also experience excessive
hair growth in areas of their bodies typical of men such
as the face, back, chest and abdomen. Some women may also
have virilizing signs such as deepening of their voice,
increased muscle mass and enlargement of the clitoris. Women
may also have infertility due to this condition. This condition
is genetic in origin and can be passed on to a child. It
is treatable.
- CONTROLLED OVARIAN HYPERSTIMULATION (COH)- A monitored
stimulation of the ovaries to produce multiple follicles
by using fertility drugs, blood tests and ultrasounds (sonograms).
- CORPUS LUTEUM- After the follicle ruptures, the
cells that originally surrounded the egg undergo changes
and form a structure called the corpus luteum. The corpus
luteum may exist as a cystic structure of varying sizes
and primarily secretes the hormone, progesterone, which
causes the endometrium to change and become secretory.
- CRYOPRESERVATION- Excess embryos from one IVF
cycle are frozen in liquid nitrogen and preserved for future
transfer. A transfer using thawed cryopreserved eggs is
called a frozen embryo transfer (FET). Cryopreservation
allows for additional attempts at pregnancy without going
through the entire IVF treatment process.
- CRYPTORCHIDISM- Undescended testis; the man's
scrotum does not contain a testicle. This can exist on one
or both sides.
- CUMULUS OOPHORUS- A protective layer of cells
surrounding the egg.
- CUSHING'S SYNDROME- Overproduction of adrenal
gland hormones such as cortisol. The person usually has
a very round face and may have a hump on the back at the
base of the neck. One may suffer from hypertension and water
retention. Elevation of adrenal gland androgens will suppress
pituitary output of LH and FSH and decrease sperm production
or cause a woman to be unable to ovulate. The excess androgen
hormones in a woman may cause male secondary sex characteristics
to develop, including abnormal hair growth. Cushing's Syndrome
describes a disease where the primary problem is within
the adrenal gland that is out of control. Cushing's Disease
has the same symptoms, but those symptoms are the result
of a primary problem in the brain such as a pituitary gland
tumor or rarely gland tumors in the chest These tumors release
hormones that turn on the otherwise normal adrenal gland
to release an excessive amount of its hormones.
- CYCLE- Refers to the period of time when infertility
treatment is initiated and continues until treatment is
discontinued or completed.
- CYTOPLASM- The contents (protoplasm) of a cell
outside of the nucleus.
- CYTOPLASMIC TRANSFER- An experimental procedure
whereby the cytoplasm of an older woman's egg is replaced
with the cytoplasm of a younger woman's egg during the IVF
process.
- D & C (dilatation & curettage)- A minor
surgical procedure in which the doctor dilates or opens
the cervix and then inserts a thin, spoon-shaped instrument
and uses it to remove material from the internal lining
of the uterus. Dilatation refers to the opening of the cervix
and curettage means the scraping of the uterine wall.
- DIETHYLSTILBESTROL (DES)- This synthetic estrogen
was prescribed in the 1950s and 1960s to women to prevent
miscarriage. Some babies exposed to DES in utero after the
eighth week of pregnancy have developed deformities, including
blockage of the vas deferens, uterine abnormalities, cervical
deformities, miscarriages, and unexplained infertility.
DES is no longer prescribed; however, people who were exposed
to it in while a fetus in their mother's womb are currently
experiencing a variety of infertility issues.
- DIHYDROEPIANDROSTERONE SULFATE (DHEAS)- An androgen-like
hormone produced primarily by the adrenal gland in both
sexes. If it is abnormally high, it can tell us the adrenal
gland is overactive, producing too much androgen hormones
that can cause hirsutism (excessive hair growth) and block
ovulation (anovulation). Elevated levels are seen in patients
with Stein-Leventhal or Polycystic Ovary syndrome (PCOS).
Test results showing elevated levels can lead to diagnosis
and effective treatments for these conditions.
- DONOR EGG CYCLE OR EGG DONATION- An embryo is
formed from the egg of one woman (the donor) and then transferred
to another woman who cannot use her own eggs (the recipient).
The donor relinquishes all parental rights to any resulting
offspring.
- DONOR INSEMINATION- This is a procedure that is
performed when sperm is unavailable or if a genetic abnormality
of the male is present. We work with sperm banks across
the country to provide a variety of donors. Donor profiles
are available for patients interested in this service. Once
the donor is selected, the specimen is ordered in advanced
and stored within our facility so that it will be available
at the time of ovulation. Donor sperm is usually administered
by intrauterine insemination but can also be used with Assisted
Reproductive Technologies.
- DOPAMINE AGONISTS- The presence of pituitary tumors,
medications, or other medical conditions can lead to excess
production of the hormone prolactin by the pituitary. This
can lead to abnormal breast discharge and irregular or absent
menses. The chemical dopamine normally maintains normal
prolactin levels. When excess prolactin is being secreted,
medications can be used to return prolactin levels to normal.
Since these chemicals act like the chemical dopamine, they
are called dopamine agonists. Different medications are
available and have different treatment schedules. The medications
are usually used orally, but can be used vaginally if the
patient is unable to tolerate the side effects from oral
administration.
- DOSTINEX (CABERGOLINE)- An oral medication used
to reduce prolactin hormone levels. It can reduce the size
of prolactin secreting pituitary tumor. It is a pill taken
twice a week, which is less frequent and with fewer side
effects than bromocriptine.
- DOWN REGULATION- A treatment cycle in which Lupron
is used to suppress a woman's internal hormone secretion
before injection of fertility medications containing Follicle
Stimulating Hormone (FSH) to stimulate follicle and egg
development.
- DOXYCYCLINE- An antibiotic in the tetracycline
family, which may be prescribed prophylactically (as a preventive
measure against possible infection) in association with
IVF egg retrieval surgery. A broad-spectrum antibiotic that
inhibits many of the bacteria of the reproductive tract.
It can also be used to treat ureaplasma or mycoplasma infections.
- DYSMENNORHEA- Painful menstruation; may be a sign
of endometriosis.
- ECTOPIC PREGNANCY- An embryo implanted and developing
outside the uterus, usually in a fallopian tube, on an ovary
or in the abdominal area. Tubal pregnancies usually result
from tubal damage, but in turn, they cause tubal damage
sometimes leading to the loss of the tube. Early evaluation
measuring hormone levels and ultrasound can lead to early
diagnosis, which allows for early intervention. Early detection
may allow for more conservative treatments with medication
called methotrexate or by laparoscopy with less risk for
loss of the affected fallopian tube.
- EGG (oocyte, ovum)- A female reproductive cell.
- EGG RETRIEVAL- Aspiration of eggs from ovarian
follicles. This may be done by ultrasound guided aspiration
in order to locate the follicles in the ovaries. The needle
can be guided into each follicle and remove its contents.
The eggs are then transferred to a sterile container to
await insemination. Anesthesia is used in order to provide
the greatest level of comfort for the woman.
- EJACULATION- The expulsion of seminal fluid from
the urethra of the penis during orgasm.
- EMBRYO- A fertilized egg that has begun cell division.
- EMBRYO CRYOPRESERVATION- The freezing of embryos
created from one cycle, which may be stored and successfully
thawed for use in another cycle.
- EMBRYO DONATION- Embryos produced from a donating
couples' oocytes and sperm.
- EMBRYOLOGIST- A trained scientist specializing
in maintaining a laboratory environment and caring for the
sperm, egg and embryo through early development. They are
highly trained to perform assisted reproductive technologies
including ICSI, assisted hatching, embryo assessment, embryo
and sperm cryopreservation and thawing.
- EMBRYO TRANSFER- Placement of embryos into a woman's
uterus through the cervix after in vitro fertilization.
- ENDOCRINE GLAND- Any of the ductless glands, such
as the thyroid, pancreas, ovary, testicle, pituitary and
adrenal gland, the secretions of which pass directly into
the blood stream from the cells of the gland.
- ENDOCRINOLOGY- The study of the body's hormone-secreting
glands.
- ENDOMETRIAL BIOPSY- This is a procedure utilized
to obtain a specimen of tissue from the lining of the uterus
so that it can be evaluated by pathology to determine if
any abnormalities are present. A speculum is placed, the
cervix is cleansed with an antiseptic solution, and a small
plastic catheter is passed through the cervix into the uterine
cavity. Suction is applied to the catheter and tissue is
removed. The procedure usually causes cramping so pretreatment
with a medication such as Motrin approximately one hour
prior to the procedure is recommended. There are no restrictions
on activities for the remainder of the day.
- ENDOMETRIOMA- A collection of endometriosis localized
in one area-usually seen in the ovary.
- ENDOMETRIOSIS- The presence of endometrial tissue
(the normal uterine lining) in abnormal locations, such
as the fallopian tubes, ovaries, intestines and peritoneal
cavity. Each month, most women have some menstrual flow
go out through the tubes and into the abdomen. Some women
will then have that endometrium implant and grow. These
endometrial implants continue to grow, sometimes causing
adhesions in the abdominal cavity encasing the ovaries and/or
the fallopian tubes like shrinkwrap. Endometriosis may interfere
with ovulation, egg pick-up, fertilization and implantation
of the embryo. It has also been related to poor egg quality.
Endometriosis can also cause pain and bleeding, which may
become so severe as to require medical or surgical treatment.
- ENDOMETRIUM- The lining of the uterus which grows
and sheds in response to estrogen and progesterone stimulation.
This is the tissue in which implantation of an embryo occurs.
- ENDORPHINS- Natural painkilling chemicals manufactured
in the brain to reduce sensitivity to pain and stress. May
be associated with PMS.
- EPIDIDYMIS- A coiled, tubular organ attached to
and lying on the testicle within the scrotum. Sperm complete
their maturation and develop their powerful swimming capabilities
within the epididymis. The matured sperm exit the epididymis
through the vas deferens.
- ESTRADIOL LEVEL (E2 Level)- The most potent form
of estrogen. It is measured to determine follicular maturation
prior to ovulation. The main estrogen produced by the ovary,
which is responsible for formation and development of breasts.
It is produced by the growing follicle and induces the development
of the uterine lining. At mid-cycle, a rapid rise in estrogen
levels triggers the release of the LH surge from the pituitary
gland. The LH surge triggers the release of the ovum (egg)
from the follicle. Women on fertility medications have routine
E2 level monitoring.
- ESTROGEN- A class of female hormones responsible
for the development of secondary sexual characteristics.
Estrogen is produced mainly by the ovaries from the onset
of puberty until menopause.
- FALLOPIAN TUBE- Either of a pair of tubes that
conduct eggs from the ovary to the uterus. Normal fertilization
takes place within this structure. The tube is attached
to the uterus through which eggs travel after the tube's
trumpet-shaped end (fimbriated end) catches the egg as it
is released from the follicle. Sperm meet the egg in the
fallopian tube where it narrows down (isthmic-ampullary
junction), the site at which fertilization usually occurs.
The fallopian tube then moves the fertilized egg-embryo
through the tube into the uterine cavity over a 4-day period
of time.
- FEMALE KALLMAN'S SYNDROME- Infantile sexual development,
very low FSH and LH levels and an inability to smell. Since
the pituitary produces inadequate LH and FSH to turn on
her otherwise normal reproductive organs, the woman is treated
with hormone supplementation in order to develop and maintain
normal breasts, have menstrual cycles and later, with gonadotropins
(FSH) or GnRH, to achieve fertility.
- FERNING- A fern-shaped pattern of dried cervical
mucus viewed on a slide. When the fern pattern appears,
the mucus is usually thin and stretchy for estrogen's effect.
This creates tubular fluid filled passages in the mucus
enhancing the passage of sperm. Mucus, which does not fern,
suggests the woman is not at a fertile time of her menstrual
cycle. It may also suggest she is not going to ovulate.
- FERTILIZATION- Union of egg and sperm, which forms
a zygote. Once the sperm and egg fuse and the first cell
division has occurred the zygote has become an embryo. This
occurs within the fallopian tube (in vivo) naturally, but
may also occur in a petri dish (in vitro) during assisted
reproductive technology (ART) procedures.
- FERTINEX- Highly purified Follicle Stimulating
Hormone (FSH) manufactured from the urine of postmenopausal
women. It is a fertility drug administered as a subcutaneous
injection.
- FETAL REDUCTION- A medical procedure to decrease
the number of fetuses in a multiple gestation.
- FETUS- Unborn offspring from the eighth week after
conception to birth.
- FIBROID- A non-cancerous (benign) tumor of the
uterine muscle and connective tissue usually located in
the uterus. Also known as a myoma or leiomyoma. Fibroids
can interfere with the implantation or growth of a fetus.
Fibroids can increase in size during pregnancy and in certain
instances result in miscarriage. This condition can usually
be corrected with surgery. Not all women who have fibroids
require surgery.
- FIMBRIA- Finger-like projections that fan out
at the end of the fallopian tube like a trumpet nearest
the ovary. During ovulation, prostaglandins are released
that cause contraction of portions of the fimbria, which
connect to the ovary called the fimbria ovariaca, drawing
the finger-like end of the tube toward the ovary and catching
the egg when it is extruded and drawing it into the tube.
- FIMBRIOPLASTY- Surgical repair of the fimbriated
end of the fallopian tube. This is performed by means of
a surgical procedure called laparoscopy.
- FLARE PROTOCOL- This stimulation of the ovary
takes advantage of the initial rise orflare of gonadotropins
(LH & FSH) in response to Lupron administration starting
on the second day of the menstrual cycle. Giving FSH 1 day
after the start of Lupron for continued follicular development
then augments thisflare response. This fertility treatment
protocol is usually prescribed for women with poor reserve
of their ovaries. These women have not had a good ovary
response to more conventional medication protocols in previous
treatment cycles.
- FOLLICLE- Fluid-filled cyst on the ovary which
contains the ripening egg and from which the egg is released
at ovulation or retrieved during the treatment cycle. The
dominant follicle is approximately 1 inch in diameter when
it is ready to ovulate.
- FOLLICLE STIMULATING HORMONE (FSH)- A hormone
produced in the pituitary gland that stimulates the ovary
to develop a follicle for ovulation and also stimulates
sperm production in the testicle. The FSH level is tested
on one of the first 3 days of a woman's cycle in order to
evaluate her fertility.
- FOLLICULAR FLUID- The fluid inside the follicle.
- FOLLICULAR PHASE- The portion of the woman's cycle
prior to ovulation during which a follicle grows. Estrogen
that is produced by the follicle causes the lining of the
uterus to grow thicker.
- FOLLISTIM- Follicle-stimulating hormone medication
produced through recombinant DNA technology, which functions
in the role of naturally-occurring FSH to stimulate the
growth of follicles and the maturation of eggs.
- FRAGMENTATION OF EMBRYOS- Sometimes when a cell
divides in the pre-implantation embryo, the split is not
clean and small pieces of cell are lost. Fragmented embryos
are less likely to implant than those without fragmentation.
The least fragmented embryos are selected for transfer.
- FROZEN EMBRYO CYCLE- An ART cycle in which frozen
(cryopreserved) embryos are thawed and transferred to the
woman.
- GAMETE- A reproductive cell (either a sperm or
an egg).
- GALACTORRHEA- A clear or milky discharge from
the breasts, which may be associated with elevated prolactin.
- GAMETE INTRAFALLOPIAN TUBE TRANSFER (GIFT)- A
procedure similar to IVF except that the sperm and eggs
are placed inside a catheter and then transferred inside
a woman's fallopian tube, where fertilization takes place
naturally (in vivo). This can be done only in women with
at least one normal tube. Fertilization is not known to
have occurred unless the woman becomes pregnant. General
anesthesia and laparoscopy are required to perform this
procedure and success rates are similar to IVF.
- GENE- A unit of DNA found in a chromosome.
- GENITOURINARY- Pertaining to the reproductive
organs (genito-) and urinary tract.
- GERM CELL (STEM CELL)- The cell in the testicle
that divides to produce the immature sperm cells. In a woman,
it is the egg (ovum). The male germ cell reproduces throughout
the man's reproductive life. Women stop growing new eggs
halfway through their development as a fetus in their mother's
womb. These are the most eggs they will have in their lifetime.
Eggs are present from birth. Eggs are used up at the rate
of one thousand per menstrual cycle. In most women, only
one egg matures per cycle.
- GERM CELL APLASIA (Sertoli Cell Only)- A condition
in which germ cells are absent from the testicles. With
this condition, there are Leydig cells and hormones, so
the man has secondary sex characteristics. May be inherited
or caused by large and/or prolonged exposure to toxins or
radiation.
- GESTATION- The period of fetal development in
the uterus from conception to birth, usually considered
to be 40 weeks in humans.
- GESTATIONAL CARRIER- A woman who carries a pregnancy
for the genetic parents.
- GESTATIONAL SAC- A fluid-filled structure that
develops within the uterus early in pregnancy. In a normal
pregnancy, a gestational sac contains a developing fetus.
- GLUCOPHAGE- METFORMIN.
- GONAD- The gland that makes reproductive cells
andsex hormones (testicles and ovaries).
- GONADOTROPIN RELEASING HORMONE AGONISTS AND ANTAGONISTS-
Minor alterations in the chemical structure of GnRH
are used to create GnRH agonists or GnRH antagonists. A
GnRH agonist acts like GnRH at the level of the pituitary,
but because the analog stimulates the pituitary on a continuous
basis rather than with pulses of GnRH as in the normal situation,
the pituitary essentially becomes exhausted and will stop
secreting FSH and LH after 7-10 days. GnRH agonists are
commonly used to shut down the production of FSH and LH
by the pituitary in the treatment of conditions such as
endometriosis and fibroids as well as part of the superovulation
protocols that are used with Assisted Reproductive Technologies.
Because GnRH analogs initially cause an increase in FSH
and LH, they have been used at midcycle instead of hCG to
cause the LH surge. GnRH antagonists differ from analogs
in that they block the effect of GnRH upon the pituitary.
This leads to an immediate drop in levels of FSH and LH.
- GONADOTROPINS- Gonadotropins are the hormones
FSH and LH that are normally produced by the pituitary to
stimulate the ovary. This group of medications can consist
of both FSH and LH or FSH or LH alone. They can be administered
by subcutaneous or intramuscular injection. Because their
use causes a marked increase in ovarian stimulation, there
is a higher risk of multiple gestation. Careful monitoring
with ultrasound and hormone tests are required to prevent
overstimulation of the ovary leading to the hyperstimulation
syndrome.
- GONAL-F- Follicle-stimulating hormone medication
produced through recombinant DNA technology, which functions
in the role of naturally-occurring FSH to stimulate the
growth of follicles and the maturation of eggs.
- GONORRHEA- This is a microorganism that may be
transmitted by sexual contact. This microorganism could
exist in the reproductive tract without symptoms and cause
infertility. If present, both partners must be treated.
The test for gonorrhea involves obtaining a sample of vaginal
fluid and culturing this in the laboratory under conditions
suited to the chlamydia bacterium. Gonorrhea causes infertility
by damaging the fallopian tubes. This damage can be in the
form of scar (adhesions) with partial or complete blockage
of the fallopian tubes. It can also cause infertility create
scarring inside the pelvis, around both of the tubes, ovaries
and intestines. Gonorrhea can lead to scarring in men reproductive
tract leading to infertility.
- HIRSUTISM- Women experience excessive hair growth
in areas of their bodies typical of men such as the face,
back, chest and abdomen. This condition is seen in women
with excess androgens or familial hypersensitivity to androgens.
- HIV (HUMAN IMMUNODEFICIENCY VIRUS)- Test done
on the blood of both the male and female partner to screen
for previous exposure to the AIDS virus. A positive test
does not necessarily mean that the individual has been exposed
to the AIDS virus or that he/she will get AIDS. A positive
test may mean that the antibody to the virus is present
in the blood.
- HMG (HUMAN MENOPAUSAL GONADOTROPIN)- A natural
product containing both human FSH and LH. Distributed under
the brand names Humegon, Repronex or Pergonal, the hormones
are extracted from the urine of post-menopausal women. The
drug is used to treat both male and female infertility and
to stimulate the development of multiple oocytes.
- HORMONAL ASSAY- Also known as hormone tests. These
include: FSH (follicle stimulating hormone), LH (luteinizing
hormone), DHEA-S (dehydroepiandresterone), prolactin and
progesterone. A hormone is a chemical substance that is
produced in the body by an organ or cells of an organ which
has a specific regulatory effect on the activity of another
organ.
- HORMONE- A substance produced by an endocrine
gland that travels through the bloodstream to a different
organ, where it has a specific effect.
- HOST UTERUS- A woman who carries a fetus that
is not genetically hers in her uterus for another woman.
The egg and sperm from a couple are fertilized in vitro
and the resultant embryo is placed in the host uterus by
embryo transfer. The baby is returned to the genetic parents
immediately after birth. Also known as gestational carrier.
- HOSTILE MUCUS- Thick cervical mucus that prevents
the sperm from penetrating the cervical canal. This may
be a sign that a woman is not ovulating. It can also be
caused by certain fertility medications such as clomiphene
citrate.
- HUMAN CHORIONIC GONADOTROPIN (hCG)- Hormone secreted
by the placenta that prolongs the life of the corpus luteum
beyond its usual fourteen-day life span, resulting in the
production of sufficient progesterone to support a pregnancy.
hCG is chemically similar to LH and may be injected to start
ovulation and ensure adequate luteal function. hCG is the
hormone measured in pregnancy test. Medications containing
hCG for use in fertility therapy are Novaril, Profasi, Pregnyl
and Ovidrel.
- HUMEGON- Human menopausal gonadotropins (hMG),
a drug containing both FSH and LH. Humegon acts the same
as Pergonal and acts directly on the ovaries to stimulate
the development of follicles.
- HYDROCELE- A swelling in the scrotum which contains
fluid; this condition may be associated with infertility.
- HYDROSALPINX- A fallopian tube that is enlarged,
filled with fluid and blocked at the end farthest from the
uterus and closest to the ovary. The inside lining of the
tube (endosalpinx) is usually damaged. The wall of the tube
is thinned and dilated. The normal cilia that line the inside
of the tube are replaced by scar. The appearance would be
similar to that of a person with severe burns of the skin.
The skin is stiff, no longer soft and supple with loss of
hair and movement of the underlying joints. So too is the
function of the fallopian tube diminished. The fimbria are
usually fused and may be gone. The tube is filled with fluid
that may contain substances that impairs fertilization of
an egg or development of an embryo. This means that even
if a couple undergoes IVF therapy and the fallopian tube
is bypassed completely, the tubal fluid may harm the embryos
that are placed in the nearby uterine cavity. This may be
the cause for lower pregnancy rates among women undergoing
IVF therapy with at least one hydrosalpinx present. There
have been many studies around the world since the mid 1990's
demonstrating improved pregnancy rates if the hydrosalpinx
fallopian tube(s) are removed in advance of IVF therapy.
Formation of a hydrosalpinx is the direct result of PID
in most cases. Other causes can be infections due to intestinal
disease such as a ruptured appendix from appendicitis. Hydrosalpinx
may also be associated with severe endometriosis. In some
patients, surgical repair of a hydrosalpinx may substantially
improve the chance of pregnancy, but it may also increase
the chance of ectopic tubal pregnancy. The tube may still
not assist a fertilized egg in passing all the way into
the uterus. In the final analysis, consultation with a reproductive
endocrinologist will assist you in your choice of either
surgical repair of the tube(s) or proceeding directly to
IVF either with the hydrosalpinx removed before IVF or only
to consider removal of the hydrosalpinx if IVF therapy was
unsuccessful.
- HYPERPROLACTINEMIA- Elevated blood levels of prolactin.
This may be due to a benign tumor of the pituitary gland,
but can be due to the use of certain medications, e.g.,
anti-hypertensive drugs or anti-depressants. Prolactin can
suppress LH and FSH production, reducing male sex drive.
Prolactin directly suppresses ovarian function in women
and can block egg release, and stop a women from having
periods (amenorrhea) Suppressing the ovary may decrease
blood estrogen levels placing women at risk of osteoporosis
(thinning of the bones). This condition is treatable with
medications such as bromocriptine or Dostinex. It can be
related to an underactive thyroid.
- HYPERSTIMULATION SYNDROME- This is a potentially
serious complication associated with the use of gonadotropins,
but can also happen with Clomiphene citrate. The usual clinical
situation involves the development of multiple follicles
with high levels of estrogen. If hCG is given to trigger
ovulation, the ovaries and surrounding tissue may start
weeping large amounts of fluid into the peritoneal cavity.
This can result in circulatory, vascular, or respiratory
difficulties in addition to the discomfort associated with
enlarged ovaries. Severe hyperstimulation requires intensive
in-hospital care.
- HYPERTHYROIDISM- Overproduction of thyroid hormone
by the thyroid gland. This condition leads to an increase
in metabolism and can cause estrogen to be depleted rapidly,
thereby interfering with ovulation. May also cause menstrual
disorders and miscarriages. The risk of miscarriage is 25%
among women with hyperthyroidism.
- HYPOESTROGENIC- Lower than normal levels of estrogen.
It may reflect an inactivity of the ovary. Tests should
be done to discover the cause.
- HYPOGONADOTROPIC HYPOGONADISM- Low pituitary gland
output of LH and FSH. Men will have low sperm counts and
may lose their sex drive. Women do not ovulate.
- HYPOSPERMATOGENESIS- Low sperm production.
- HYPOTHALAMUS- A part of the brain that regulates
hormones. It is located above the pituitary gland. This
tissue secretes GnRH in pulses 60 to 120 minutes apart.
The pulsatile GnRH stimulates the pituitary gland to secrete
LH and FSH.
- HYPOTHYROIDISM- Underproduction of thyroid hormone
by the thyroid gland. The resulting lowered metabolism can
interfere with the normal breakdown of hormones and may
lead to lethargy. Women may have high levels of prolactin
and estrogen, which can interfere with fertility.
- HYSTERECTOMY- The removal of the uterus which
can be total (including removal of the ovaries and tubes)
or partial (just the uterus and sometimes including the
cervix).
- HYSTEROSALPINGOGRAM- This is a procedure performed
in Radiology that evaluates the structure of the uterine
cavity and fallopian tubes. A sterile speculum is placed
in the vagina and the cervix is cleansed with an antiseptic
solution. A small instrument is then attached to the cervix.
Various types of cannulas or catheters can then be used
to inject dye through the cervix into the uterine cavity.
X-rays are taken during the course of this procedure. Cramping
should be expected so pretreatment with a medication such
as Motrin approximately one hour prior to the procedure
is recommended. It is recommended that someone accompanies
you to the hospital and that you not return to work for
the rest of the day.
- HYSTEROSCOPIC MYOMECTOMY- A procedure in which
the doctor removes a uterine fibroid while using a hysteroscope.
- HYSTEROSCOPY- Fiberoptic visualization of the
inside of the uterus through the cervix with a telescope-like
device. Many surgical repairs can be done during a hysteroscopy.
This procedure is sometimes performed in conjunction with
a laparoscopy. Diagnostic hysteroscopy can be done in the
office with a 3-mm fiberoptic flexible telescope. Patients
tolerate this procedure well without anesthesia. Should
an abnormality be found by hysteroscopy in the office, then
an operative hysteroscopy can be scheduled in the operating
room. A larger telescope is used. This requires anesthesia.
Conditions treated include fibroid tumors of the uterus,
polyps, uterine septum, intrauterine scarring (Asherman's
Syndrome), among others.
- IDIOPATHIC INFERTILITY (UNEXPLAINED INFERTILITY)-
The term used when no reason can be found to explain
the cause of a couple's infertility.
- IMPLANTATION- The embedding of the fertilized
egg in the lining of the uterus.
- IMPOTENCE- The inability of the man to establish
and maintain an erection and to ejaculate.
- INFERTILITY- The inability to conceive and/or
carry a pregnancy to term after one year of unprotected
intercourse for women less than 35 years of age or after
6 months for women 35 years of age or greater; also known
as sub-fertility.
- INHIBIN- A hormone made in the gonads to regulate
FSH production by the pituitary gland for both men and women.
- INSULIN SENSITIZING AGENTS- These are drugs that
are used in patients with polycystic ovaries in an attempt
to reduce their resistance to insulin. Use of such medications
can result in return of normal ovulatory cycles or make
the individual more responsive to fertility drugs.
- INTRACYTOPLASMIC SPERM INJECTION (ICSI)- An advanced
reproductive technology where a single sperm is injected
into an egg. This micromanipulation technique helps enable
fertilization with very low sperm counts or with non-motile
sperm.
- INTRAUTERINE INSEMINATION (IUI)- This office procedure
involves washing and concentrating sperm in the lab and
placing them into the uterine cavity. A speculum is placed
into the vagina and a small flexible catheter attached to
a syringe containing the prepared semen is then introduced
into the endometrial cavity. The semen is slowly injected
and the patient then remains lying down for 10 minutes following
the procedure. There are no restrictions on activities for
the remainder of the day.
- IVF (in vitro fertilization)- An Assisted Reproductive
Technology (ART) procedure that involves removing eggs from
a woman's ovaries and fertilizing them outside her body.
The resulting embryos are then transferred into the woman's
uterus through the cervix.
- KALLMAN'S SYNDROME- A congenital dysfunction of
the hypothalamus which includes the failure to complete
puberty and lack the sense of smell.
- KARYOTYPING- A test to evaluate the number and
make up of chromosomes for the presence of genetic defects.
- KLINEFELTER'S SYNDROME- A genetic abnormality
in a man with one Y (male) and two X (female) chromosomes.
May cause a fertility problem with little to no sperm production.
- LAPAROSCOPIC MYOMECTOMY- Removal of a uterine
fibroid by using a laparoscope, a small telescope that can
be inserted into a hole in the abdominal wall for viewing
the internal organs. A laparoscope can be used to diagnose
and treat a number of fertility problems including endometriosis,
abdominal adhesions, and polycystic ovaries.
- LAPAROSCOPY- A surgical procedure where a telescope-like
device is inserted through a small incision near the navel
in order to visualize the pelvic cavity, the ovaries, fallopian
tubes and uterus. Used for diagnosis and treatment of infertility,
pelvic pain, pelvic abnormalities including endometriosis,
abdominal and pelvic adhesions, damaged fallopian tubes,
fibroid tumors of the uterus, removal of cysts and polycystic
ovaries.
- LAPAROTOMY- Major abdominal surgery. For fertility
needs, a laparotomy should only need to be done for removal
of fibroid tumors or other masses that cannot be removed
by laparoscopy.
- Live birth - The delivery of one or more babies
with any signs of life.
- LUPRON (LEUPROLIDE ACETATE)- A GnRH analog which
stimulates the female hormones initially, then suppresses
a woman's secretion of FSH and LH, thus creating a pseudo
menopause. Lupron has been extensively used in the United
States and has been found to increase the number of follicles,
oocytes (eggs), and embryos obtained, with a decreased chance
of cancellation of the cycle. Also used to manage endometriosis.
LUPRON DOWN REGULATION A treatment cycle in which Lupron
is used to suppress a woman's internal hormone secretion
before injection of hMG to stimulate follicular development.
LUPRON FLARE This stimulation takes advantage of the initial
rise or Flare of gonadotrophins (LH & FSH) which occurs
24 hours after the start of Lupron administration. This
flare response is then augmented by giving other fertility
agents.
- LUTEAL PHASE- The days of a menstrual cycle following
ovulation and ending with menses, during which progesterone
is produced. Progesterone causes the uterine lining to thicken
for implantation and growth of the embryo.
- LUTEAL PHASE DEFICIENCY (LPD)- Inadequate progesterone
or a failure of the corpus luteum to produce progesterone
long enough to allow implantation, or the inability of the
uterine lining to respond to progesterone stimulation. LPD
may prevent implantation or cause an early miscarriage.
- LUTEINIZED UNRUPTURED FOLLICLE (LUF) SYNDROME- The
follicle develops and becomes a corpus luteum without releasing
the egg.
- LUTEINIZING HORMONE (LH)- A hormone secreted by
the pituitary gland. When estrogen reaches a critical peak,
the pituitary releases a surge of LH (the LH spike) that
releases an egg from the follicle (ovulation). Ovulation
detection kits detect the sudden increase in LH signaling
that ovulation is about to occur, usually within 18 to 24
hours. LH is necessary for spermatogenesis (Sertoli cell
function) and for production of testosterone (Leydig cell
function). In the female, LH is necessary for normal function
of FSH and for triggering ovulation.
- LUTEINIZING HORMONE (LH) SURGE- A spontaneous
release of large amounts of Luteinizing Hormone (LH). This
normally results in the release of a mature egg (ovulation).
Ovulation test kits detect the increase of LH, signaling
that ovulation is to occur-usually within 18 to 24 hours.
- MALE FACTOR- Any cause of infertility resulting
from low sperm count or problems with sperm function that
make it difficult for a sperm to fertilize an egg under
normal conditions.
- MATURATION ARREST- A testicular condition in which
sperm development halts throughout all testicular tubules.
May result in oligozoospermia or azoospermia.
- MEIOSIS- The cell division peculiar to reproductive
cells, which divides genetic material in half. New cells
contain twenty-three chromosomes. The spermatids (immature
sperm) and ova (eggs) each contain twenty-three chromosomes.
Fertilization brings them together in the baby, which will
have a normal complement of forty-six chromosomes.
- MENOMETRORRHAGIA- Heavy bleeding at an unexpected
time for menstruation to occur in a menstrual cycle.
- MENOPAUSE- Permanent cessation of the menses;
termination of the menstrual life due to hormonal changes.
- MENORRHAGIA- Heavy or prolonged menstrual flow.
- MENSTRUATION- The shedding of the lining of the
uterus that occurs approximately every four weeks in non-pregnant
women.
- MESA- Microscopic epididymal sperm aspiration.
A surgical procedure to collect sperm from the epididymis
in order to use the sperm for in vitro fertilization. This
is a treatment for male factor infertility, when no sperm
is present in the ejaculate.
- METFORMIN (GLUCOPHAGE)- This medication is in
a family of drugs called oral hypoglycemics. It is used
in the treatment of type 2 diabetes mellitus. This is the
type of diabetes more commonly associated with obesity in
men and women. Affected people make insulin and blood insulin
levels are usually abnormally high. The problem lies in
that the nature of their condition. Insulin is designed
to move sugars from the blood stream into the tissues like
the liver and muscle. With obesity, the tissues become more
resistant to insulin moving sugars into them. This is called
insulin resistance. Metformin acts to reduce the insulin
resistance, thus allowing sugars to pass more easily into
the tissues. Blood sugars decrease back into the normal
range and the diabetes is effectively treated. Combining
Metformin with a low carbohydrate (low sugar) diet is very
effective in controlling diabetes. Weight loss also will
follow if this treatment plan is religiously followed. Both
the Metformin and weight loss leads to better control of
the diabetes. If sufficient weight is lost and the diet
change becomes a permanent lifestyle change, then Metformin
may no longer be necessary to take. This treatment is also
effective for some women with Polycystic Ovary Syndrome.
- METRODIN- Purified Follicle Stimulating Hormone
(FSH) manufactured from the urine of postmenopausal women.
It is a fertility drug administered as a subcutaneous injection.
- METRORRHAGIA- Spotting or light bleeding at an
unexpected time for menstruation to occur in a menstrual
cycle.
- MICROINSEMINATION- A laboratory technique whereby
sperm are injected next to the egg cell surface to increase
the likelihood of fertilization.
- MICROMANIPULATION- An IVF laboratory process in
which the egg or embryo is held with special instruments
and treated by procedures such as ICSI, assisted hatching,
or embryo biopsy.
- MICROSURGERY- Microscopic reconstruction surgery
of the fallopian tubes.
- MISCARRIAGE (SPONTANEOUS ABORTION)- A pregnancy
ending in the spontaneous loss of the embryo or fetus before
20 weeks of gestation.
- MITOSIS- The cell division leading to two identical
cells with forty-six chromosomes.
- MITTLESCHMERZ- Painful ovulation. During ovulation,
the follicle ruptures. Small blood vessels on the surface
of the follicle may tear and bleeding occurs. Any time there
is blood in the abdomen, a chemical irritation occurs that
leads to the sensing of pain.
- MONOGAMOUS- An exclusive sexual relationship between
2 individuals.
- MORULA- A stage of embryo development after four
days of culture in vivo (inside the body). Between the eight-cell
stage and the blastocyst stage of development, the cells
of the embryo merge to form a solid ball known as a morula.
- MOTILITY- The percentage of all moving sperm in
a semen sample. Normally 50% or more are moving rapidly.
- MULTI-FETAL PREGNANCY REDUCTION- A procedure to
decrease the number of fetuses a woman carries and improve
the chances that the remaining fetuses will develop into
healthy infants. Multi-fetal reductions that occur naturally
are referred to as spontaneous reductions.
- MULTIPLE BIRTH- Birth of two or more children
from a single term of pregnancy.
- MYCOPLASMA- A bacteria that has been implicated
in the cause of miscarriage. A clear cause effect relationship
with miscarriage has not been scientifically proven. About
40% of all women have mycoplasma as part of the natural
bacteria that resides in the vagina. Since these women who
carry the bacteria are not necessarily the women that experience
miscarriage or even have fertility problems, the role of
this bacteria in infertility is not clear.
- MYOMA- A common benign tumor of the muscle of
the uterus. This is sometimes called a fibroid.
- MYOMECTOMY- The surgical removal of fibroid tumors
from the wall of the uterus. This surgery may be done either
by laparoscopy or laparotomy. The surgical approach depends
on the nature of the fibroid and the condition of the patient.
- NECROSPERMIA- Condition in which sperm are produced
and found in the semen, but they are dead. These sperm cannot
fertilize eggs. Sperm that are not moving are not always
dead; special stains are used to make this diagnosis.
- OLIGO-OVULATION- Irregular or infrequent ovulation.
Menstrual cycles 40 days or longer from the start of one
period to the start of the next period.
- OLIGOMENORRHEA- Scanty or infrequent menstrual
periods.
- OLIGOSPERMIA- A condition in which the number
of sperm in a semen sample is abnormally low.
- OOCYTE- The female reproductive cell. The egg
cell produced in the ovaries. Also called the ovum or gamete.
- OOCYTE CRYOPRESERVATION- Freezing of egg cells
to keep them viable.
- OOCYTE DONATION- Oocytes donated to women whose
ovaries fail to produce usable
oocytes, or who have a genetic disorder that may be passed
on to the child.
- OOCYTE RETRIEVAL- A surgical procedure, usually
under sedation, to collect the eggs contained with the ovarian
follicles. A needle is inserted into the follicle, the fluid
and egg are aspirated into the needle and then placed into
a culture medium - filled dish.
- OVARIAN CYST- A persistent fluid-filled sac in
the ovary. A normal sac forms each cycle with follicular
development. That is, a follicle is a specialized cyst that
has an egg inside of it. Cysts may also be found with ovulation
disorders, neoplasms of the ovary, and endometriosis. Cysts
can produce hormones that interfere with ART cycles.
- OVARIAN DRILLING- The use of lasers or electrosurgery
to reduce the amount of hormonal producing tissue in the
ovary in an attempt to restore ovulation in patients with
the polycystic ovary syndrome. Surgical therapy for treatment
of anovulation (wedge resection) originally involved removing
a wedge shaped piece of the ovary and then sewing the ovary
back together. Today's procedures are performed through
the laparoscope.
- OVARIAN FAILURE- Failure of the ovary to respond
to FSH stimulation by not developing follicles. Diagnosed
by elevated FSH in the blood, usually of a level greater
than 20. May be due to exhaustion of the egg supply or an
autoimmune problem. Exhaustion of eggs means menopause.
Autoimmune problem means that a woman's immune (defense)
system is interfering with the ovaries' ability to respond
and develop follicles. Therefore the eggs that are present
are neither developing nor being released (ovulating).
- OVARIAN HYPERSTIMULATION- Administration of hormones
to promote egg development in the ovaries.
- OVARIAN HYPERSTIMULATION SYNDROME (OHSS)- When
a woman is undergoing controlled ovulation hyperstimulation
(COH), it is possible that this may result in a dramatic
increase in the size of the ovaries, causing a cluster of
symptoms referred to as ovarian hyperstimulation syndrome
(OHSS). This is a serious condition characterized by swollen,
painful ovaries and, in some cases, the accumulation of
fluid in the abdomen and chest. This requires immediate
treatment.
- OVARIAN MONITORING- Use of ultrasound and/or blood
or urine tests to monitor follicle development and hormone
production.
- OVARIAN RESERVE- This is a term that is used to
describe the presence of responsive eggs within the ovary.
Thus, decreased ovarian reserve implies a deficiency in
responsive oocytes. The medical history, menstrual history,
or prior response to ovarian stimulation may suggest the
presence of decreased ovarian reserve. Pregnancy rates in
spontaneous cycles or with Assisted Reproductive Technologies
in such a situation are poor.
- OVARIAN RESERVE TESTING- Hormones produced by
the cells surrounding the egg inhibit the release of pituitary
hormones. When the number of eggs is diminished, the levels
of these hormones are diminished, so the levels of FSH begin
to increase. Methods to assess ovarian reserve include baseline
hormone testing (FSH and estrogen levels on day 3 of the
cycle) and the levels of FSH on day 10 of the cycle after
having used the fertility drug, clomiphene citrate, days
5-9 of the cycle (Clomiphene citrate challenge test).
- OVARIAN STIMULATION- Use of drugs (oral or injected)
to stimulate the ovaries to develop follicles and eggs.
- OVARY- The two female gonads containing the eggs.
The ovary releases hormones (estrogens, androgens and progesterone
among many others) that cause development of secondary sex
characteristics and reproductive organs in women.
- OVIDREL- A fertility medication of human chorionic
gonadotropin (hCG) used to prompt ovulation. It is the first
preparation of hCG to be available of subcutaneous injection.
It became available for use in the United States at the
beginning of the year 2001. Other hCG preparations (Profasi,
Pregnyl) require the deeper intra-muscular injection.
- OVULATION- When the follicle reaches a critical
size and is making critical levels of estrogen, it is as
though the ovary was telling the pituitary that the egg
is ready to be released. The pituitary responds with a sudden
release of large amounts of LH and FSH. This surge of hormones
completes the egg's development and causes the follicle
to rupture (ovulation) so that the egg can be released and
to be picked up by the fallopian tube (usually around the
14th day of the cycle). The hormonal surge also causes the
cells that originally surrounded the egg to change into
a structure called the corpus luteum. This structure primarily
secretes the hormone Progesterone. The progesterone causes
the uterine lining to change its appearance and begin secreting
various substances that will allow the fertilized egg to
invade under its surface and to survive (implantation).
- OVULATION INDUCTION- The use of female hormone
therapy (clomiphene citrate, FSH, hCG) to stimulate oocyte
development and release.
- OVULATION PREDICTOR KITS- This test is used to
determine when ovulation will occur. The usual test is a
urine test. The woman's urine is tested to determine the
sudden release of hormones from the pituitary that occurs
just prior to release of the egg. Other tests are also becoming
available that look for other changes that occur prior to
ovulation. Ovulation will usually occur within 24 hours
of when the test becomes positive.
- OVULATORY DYSFUNCTION- Infertility resulting from
problems with egg production by the ovaries.
- OVULATORY FAILURE- The failure to ovulate. Treatment
may be ovulation induction therapy.
- OVUM- Another name for the egg.
- PANHYPOPITUITARISM- Complete failure of the pituitary
gland.
- PAPANICOLAOU SMEAR (Pap Smear)- Also known as
Pap test. This is a screening test to evaluate the cells
of the cervix and vagina to determine if the cells are normal.
- PATENT- Open or unblocked (as in Fallopian tubes).
- PELVIC INFLAMMATORY DISEASE (PID)- An infection
of the pelvic organs. Chlamydia and gonorrhea infections
can cause PID and can result in severe illness, high fever,
and extreme pain. PID can also cause tubal blockage and
pelvic adhesions. Constant pelvic pain and recurrent pelvic
infections can develop after the initial infection. This
condition is a common cause of infertility and may cause
future ectopic pregnancy. Some women have no history of
symptoms such as pain, but they have clear evidence of PID.
Surgical treatment may improve fertility. Often, IVF therapy
is needed.
- PERGONAL- Human menopausal gonadotropin (hMG),
a drug containing both FSH and LH. Pergonal acts directly
on the ovaries to stimulate the development of follicles.
- PITUITARY GLAND- The master gland. This gland
is controlled by the hypothalamus and controls most hormonal
functions. It is located at the base of the brain just below
the hypothalamus. It controls the function of the thyroid,
adrenal gland, ovary or testicle, and growth and development.
- PLACENTA- The tissue part of the embryo that invades
the uterine wall and provides an exchange of the baby's
waste products for the mother's nutrients and oxygen. The
baby is connected to the placenta by the umbilical cord.
- POLAR BODY- Discarded genetic material resulting
from female germ cell division. When an egg matures, it
discards half of its genetic material so that the egg cell
is ready to fuse with half of the male genes inside a sperm.
This discarded genetic material can be seen in the egg as
a small round piece of cytoplasm at the edge of the egg
cell. The presence of a polar body tells us whether an egg
is mature or immature.
- POLYCYSTIC OVARIES (PCO)- A condition found in
women who don't ovulate, characterized by excessive production
of male sex hormones (androgens) and the presence of cysts
on the ovary. PCO can be without symptoms although some
women who do show symptoms are said to have PCOS.
- POLYCYSTIC OVARY SYNDROME (PCOS)- The usual definition
of this condition includes absent or infrequent ovulation
and evidence of increased male hormones due to an abnormal
release of LH and FSH hormones. The ovaries are usually
enlarged and have multiple small, incompletely developed
follicles immediately underneath the surface of the ovary
with gives the appearance of multiple (poly) cysts. Insulin
resistance appears to play a critical role in the development
of this condition. The symptoms of having polycystic ovaries
are evident, such as weight gain, acne, and excessive hair
growth. Some women with excess insulin in the blood stream
and obesity will benefit from medical treatment of Metformin
(Glucophage) and a low carbohydrate diet.
- POST COITAL TEST- A microscopic evaluation of
cervical mucus performed twelve or more hours after intercourse
to determine compatibility between the woman's mucus and
the man's. The quality of the cervical mucus is also evaluated.
There is strong evidence that this test offers little value
in a couple's infertility evaluation; therefore it may not
be recommended as part of your infertility testing.
- POST EJACULATE URINE- A laboratory test where
a man's urine is examined for the presence of sperm after
he has ejaculated. This test is performed on men who have
had a very low sperm count or no sperm seen in past semen
analyses. These men may have retrograde ejaculation. That
is, the sperm takes a wrong turn during orgasm and enters
the bladder instead of exiting through the penis. This condition
is more common among men with diabetes or nervous system
disorders due to spinal cord injuries.
- PREGNANCY (BIOCHEMICAL)- A positive pregnancy
test that shows no evidence of a gestational sac or viable
fetus on ultrasound. Can be classified as a very early miscarriage.
- PREGNANCY (CLINICAL)- A pregnancy documented by
ultrasound that shows a gestational sac containing a viable
fetus in the uterus. For ART data collection purposes, pregnancy
is defined as a clinical pregnancy rather than a biochemical
pregnancy.
- PREIMPLANTATION GENETIC DIAGNOSIS (PGD)- A process
whereby a single blastomere (cell) from an 4 to 8 cell embryo
(two to three days after egg collection during the IVF process)
is removed, fixed, and subjected to a number of DNA probes.
Currently, it can be used to diagnose a limited number of
genetic disorders before implantation. Results can be obtained
within 24 hours, which can allow for normal embryos to identified
and selected for transfer. PGD is of benefit to couples
known to be at risk of passing an inherited disorder to
their children and possibly in improving the likelihood
of a successful pregnancy and birth following IVF.
- PREMATURE OVARIAN FAILURE- Ovarian failure before
the age of 40.
- PREGNYL- A fertility medication of chorionic gonadotropin
(hCG) used to prompt ovulation; an intra-muscular injection.
- PRIMARY INFERTILITY- Infertility in couples where
the woman has never conceived.
- PROFASI- A fertility medication of chorionic gonadotropin
(hCG) used to prompt ovulation; an intra-muscular injection.
- PROGESTERONE (P4)- A hormone produced and released
by the corpus luteum of the ovary during the second half
of an ovulatory cycle. It is necessary for the preparation
of the lining of the uterus for the implantation of the
fertilized egg. During pregnancy, the placenta produces
progesterone. Injection or suppository will provide supplemental
support when indicated such as in recurrent miscarriages
and IVF therapy. Blood tests to monitor progesterone levels
will help determine the progress of a cycle.
- PROGESTERONE WITHDRAWAL- Some women have infrequent
or no periods by their nature. This is called oligo-menorrhea
and amenorrhea respectively. If it has been longer than
35-40 days since the last period, there has been no evidence
of ovulation and a women is not pregnant, then progesterone
medication may be taken to artificially cause menstrual
bleeding to occur. Progesterone is commonly taken in the
form of Provera (Medroxyprogesterone acetate) for 5 to 10
days. Then progesterone medication is stopped. When the
progesterone is stopped or withdrawn, the lining of the
uterus collapses and a period starts. Progesterone withdrawal
has many advantages: 1) it can start a period permitting
fertility medications to be started; 2) it can be used to
clear the uterine lining from abnormal tissue overgrowth
that would otherwise place a women at increased risk for
developing cancer of the lining of her uterus; 3) it can
regulate a woman's menstrual cycle giving her a sense of
regularity and feeling normal and healthy; 4) it can be
used as a test to make sure no other hormone imbalances
are taking place that may cause a women not to have a period
such as menopause, hyperprolactinemia, thyroid disease or
intrauterine scarring (Asherman's Syndrome). In these cases,
a period will not start with progesterone withdrawal. Progesterone
withdrawal is most commonly used for women with Polycystic
Ovary Syndrome or as hormone replacement along with estrogen
for women in menopause.
- PROLACTIN- A hormone produced by the pituitary.
Measuring blood levels of prolactin is useful in providing
an index of functional disorder within the hypothalamic-pituitary
axis that may lead to failure to ovulate properly. Treatment
with Parlodel may be recommended when the level is high.
- PRONUCLEAR PHASE (2PN)- A fertilized egg (zygote).
In IVF, the pronuclear stage is the morning after the egg
collection.
- PRONUCLEI (PN)- Evidence of fertilization. In
a normally fertilized egg, two spherical structures (pronuclei)
can be seen in the middle of the egg 16 to 22 hours after
insemination. One sphere contains the female genetic material,
and the other contains the male genetic material before
they fuse to form the genes of the embryo.
- PROSTAGLANDINS- Compounds that are present in
semen, in the follicle of the ovary at the site of ovulation,
produced by endometriosis, and are produced by the breakdown
of the lining of the uterus and other tissue. Prostaglandins
cause contraction of smooth muscle such as the uterus and
intestines. Pain and diarrhea may be a result of the prostaglandins.
- PROSTATE GLAND- The gland in the pelvis of a man
that produces a portion of the semen, including the chemical
that liquefies the coagulated semen after entering vagina.
- PYOSPERMIA- Condition in which the presence of
white cells in the sperm indicated possible infection and/or
inflammation.
- QUANTITATIVE hCG- Testing the exact value of the
serum beta hCG level to assess the progress and reassurance
of good progress during early pregnancy. The hCG levels
may also assist in determining the timing of further testing
and interventions during early pregnancy. It is also used
during prenatal testing in the second trimester at about
16-18 weeks.
- REPRODUCTIVE ENDOCRINOLOGIST- A subspecialist
physician who has received residency training in Ob/Gyn
and advanced training (fellowship) in the treatment of infertility,
recurrent miscarriages and hormonal disorders in women.
Reproductive Endocrine fellows are trained in advanced procedures
used through a minimally invasive technique of operative
laparoscopy. Such procedures are more advanced infertility
surgeries treating endometriosis, pelvic scarring that causes
damage to the fallopian tubes and ovaries leading to infertility
and pelvic pain, and to reverse tubal ligation. The Reproductive
Endocrinologist also treats couples in need of injectable
fertility drugs and assisted reproductive technologies-
both of which require advanced monitoring with pelvic ultrasounds
and hormone blood tests to control and optimize the chance
of having a baby. Reproductive Endocrinologists also have
special expertise managing these problems: abnormal or absent
menstrual periods, laparoscopic or hysteroscopic laser surgery,
menopause, birth defects of the female reproductive tract
and contraceptive difficulties.
- RESISTANT OVARY SYNDROME- An ovary unresponsive
to follicle-stimulating hormone (FSH). Germ cells will be
present in the ovary, but they will not respond to FSH.
- RETROGRADE EJACULATION- A male infertility problem
in which sperm travels to the bladder instead of out of
the penis. This condition results from a failure in the
sphincter muscle at the base of the bladder. Medical intervention
is necessary to conceive.
- RUBELLA TITER- A blood test which determines if
the patient is immune to rubella (German measles). If immunity
is not present the patient may be advised to have a rubella
vaccination, wait three months before attempting pregnancy,
and then re-test for immunity.
- SALPINGECTOMY- Surgical removal of the fallopian
tubes.
- SALPINGOLYSIS- Surgical removal of adhesions that
restrict the movement and function of the tubes.
- SALPINGOSTOMY- Cutting open the fallopian tube
that was completely blocked before surgery. It may also
refer to cutting open the fallopian tube in the process
of removing a tubal ectopic pregnancy.
- SCROTUM- The bag of skin and thin muscle surrounding
the man's testicles.
- SECONDARY INFERTILITY- The inability to conceive
or carry a pregnancy after having successfully conceived
one or more times.
- SECONDARY SEX CHARACTERISTICS- Beard, hair pattern,
genital development, increased muscle mass and deep voice
in men. Breast, genital development and female body hair
pattern in women. Characteristics stimulated by sex hormones
(testosterone and estrogen). These characteristics begin
to appear at puberty (sexual maturity).
- SEMEN- Fluid portion of the ejaculate consisting
of the sperm and secretions from the seminal vesicles, prostate
gland, and several other glands in the male reproductive
tract.
- SEMEN ANALYSIS (SA)- Freshly ejaculated semen
is evaluated under microscope to count the number of sperm,
the percentage of moving sperm (motility), assess the size
and shape of the sperm (morphology). Also measured are semen
(fluid) volume and presence of white blood cells, which
might indicate an infection.
- SEMEN CRYOPRESERVATION- Freezing of semen to keep
it viable.
- SEMEN DONATION- A process in which semen may be
obtained from a donor bank.
- SEMEN LEUCOCYTES- White blood cells in the semen.
Increased numbers have been associated with deficiencies
in sperm function and motility, genitourinary infection
and/or inflammation.
- SEMEN VISCOSITY- Liquid flow or consistency of
semen.
- SEMINAL VESICLES- Glands which produce much of
the semen volume, including fructose (sugar) for nourishing
the sperm.
- SEMINIFEROUS TUBES- The testicular tubules where
sperm mature and move toward the epididymis.
- SEPTATE UTERUS- A uterus divided into right and
left halves by a wall of tissue (septum). Women with a septate
uterus have an increased chance of early pregnancy loss.
The outer surface shape of the uterus is round and normal
in appearance. This is in contrast to a bicornuate uterus
where the outer wall is heart shaped following the shape
if the inner cavity of the uterus.
- SERTOLI (Nurse) CELL- A testicular cell that nurtures
the spermatids (immature sperm). They secrete inhibin, a
feedback hormone, which regulates FSH. When stimulated by
FSH, the Sertoli cell initiates spermatogenesis (sperm production).
- SHEEHAN'S SYNDROME- A condition caused by low
blood pressure or shock at the time of delivery, which damages
the pituitary gland. Tissue within the pituitary gland dies
and becomes non-functional.
- SO: Superovulation.
- SONOGRAM (Ultrasound)- Use of ultra high-frequency
sound waves (like sonar) to create an image of internal
body parts. Used to evaluate the size and number of ovarian
follicles. Also used to detect and monitor pregnancy, identify
uterine fibroids, pelvic masses such as endometriomas, ovarian
cysts and uterine malformations such as a septate or bicornuate
uterus.
- SONOHYSTEROGRAPHY- This is a procedure that utilizes
ultrasound to evaluate the inside of the uterine cavity.
A speculum is placed into the vagina, the cervix is cleansed,
and a small catheter is inserted into the uterine cavity.
A syringe filled with fluid is then attached to the catheter.
The speculum is removed and is replaced with a vaginal ultrasound
probe. Fluid is then injected into the uterine cavity while
watching with ultrasound.
- SPERM- The male reproductive cell; the microscopic
cell that carries the male's genetic information. The male
gamete.
- SPERM AGGLUTINATION- Clumping of sperm caused
by antibody reactions or by infection. This may occur when
either the man or woman develops immunity to the sperm.
Can only be seen with a microscope.
- SPERM ANTIBODIES- Antibodies against sperm cells
which may attack and destroy them. These antibodies can
be produced either by men against their own sperm or by
women through their own serum. Sperm antibodies attach themselves
to parts of the sperm and inhibit movement and fertilization.
IVF is often the only way to overcome infertility caused
by sperm antibody problems. Not all sperm antibodies cause
infertility. Testing can be done to see if sperm antibodies
directed to critical parts of the sperm are present and
are present in high levels to indicate IVF therapy.
- SPERM ANTIBODY TESTING- Test that is done to determine
if a man's sperm or a woman's blood harbors substances that
cause his sperm to clump together, lose motility, or lose
the ability to fertilize an egg. The direct immunobead test
directly tests for the presence of antibodies in the man's
sperm. The indirect immunobead test tests for sperm antibodies
in the woman's blood serum. The direct immunobead test appears
to be most predictive of a sperm antibody problem that may
cause infertility. The indirect immunobead test for the
women poorly predicts infertility. This may be the case
because the presence of antibodies in her blood stream does
not mean those antibodies will ever come in contact with
a sperm during intercourse. In contrast, antibodies found
in the man's semen (direct immunobead) are detecting antibodies
that are already attached to the sperm. This is the reason
only direct immunobead testing is usually done.
- SPERMATOGENESIS- Sperm production in the testicles.
- SPERM BANK- A place where sperm are kept frozen
in liquid nitrogen for later use in artificial insemination.
Couple's may bank sperm for many reasons: male partner has
a serious disease and will be exposed to radiation or chemotherapy
that will destroy his sperm producing cells; male partner
may not be available at a critical time of ovulation for
his female partner, therefore intrauterine insemination
with banked sperm can be done; a man chooses to have vasectomy,
but wishes to store sperm for future family planning should
that be his choice. This will permit him to avoid having
surgery to reconnect is vas deferens for future fertility.
Couple's may also wish to use anonymous donor sperm for
therapeutic donor insemination (TDI). On less common occasions,
known donor sperm can be banked for future intrauterine
insemination. If the male donor is not the female patient's
partner in family planning, the sperm donor must undergo
rigorous standards of screening and quarantined storage
for 6 months as is the guideline standard of care for sperm
donors in the United States.
- SPERM COUNT- The number of sperm in the ejaculate,
and is reported as millions per ml.
- SPERM MATURATION- The sperm grow and gain their
ability to swim. Sperm take about 72 days to reach maturity.
- SPERM MORPHOLOGY- Number or percentage of sperm
that look normal at the microscopic level. Assessment of
the acrosome cap, the sperm head, the midpiece and the tail.
The greater the percentage of abnormally shaped sperm, the
less likely fertilization will occur. Abnormal appearing
sperm does not lead to abnormal babies.
- SPERM MOTILITY- The ability of sperm to move and
swim normally. Normal sperm motility should be 50% or greater.
Motility at 40% or less is a likely cause of infertility.
- SPERM PENETRATION- The ability of the sperm to
penetrate an egg.
- SPERM SWIM-UP- This technique separates motile
sperm from non-motile sperm and cellular debris in a semen
sample. The most motile sperm will swim-up in a small volume
of media so they can be more easily separated for insemination
- SPERM WASH- Technique for separating sperm from
seminal fluid. Sperm washing concentrates the more active,
normally formed sperm. It is a method used in fertility
therapy with intrauterine insemination and IVF.
- SPINNBARKEIT- The stretchiness of cervical mucus;
the stretchy quality that occurs at mid-cycle under the
influence of estrogen. See Post Coital Test and Cervical
Mucus. The greater the length of stretch, the more fertile
the time of the female partner.
- SPONTANEOUS ABORTION- A miscarriage or the unintended
termination of a pregnancy before the twentieth week.
- STEIN-LEVENTHAL SYNDROME- Polycystic ovaries with
androgen-excess symptoms.
- STERILITY- The total inability to reproduce. Not
to be confused with infertility.
- STILLBIRTH- Birth of an infant with no signs of
life after 20 or more weeks of gestation.
- STIMULATION- Administration of hormones which
induce development of multiple ovarian follicles.
- SUPEROVULATION- Stimulation of multiple follicles
with fertility drugs.
- SURGICAL SPERM RETRIEVAL- The extraction of sperm
from the male reproductive tract can be accomplished using
a variety of procedures including needle aspiration or biopsy.
- SURROGACY- One woman carrying a pregnancy for
another woman, either as a gestational carrier (the surrogate
receives an embryo created by two other individuals), or
a traditional surrogate (the surrogate is inseminated with
sperm from the male partner of an infertile couple).
- SURROGATE- A woman who becomes pregnant through
insemination with the sperm of the husband of an infertile
woman, and then following delivery , turns the child over
for adoption by the couple.
- TDI - Therapeutic or artificial insemination with
donor sperm. During this procedure sperm from a donor is
placed into a woman's vagina or cervix.
- TESA- Testicular sperm aspiration. Biopsy sample
of tissue containing sperm. The sperm are used for in vitro
fertilization. This is a male factor infertility treatment
for men who do not produce sperm in their ejaculate and
if no sperm can be found in the epididymis (through a surgical
procedure). The testicle tissue containing the sperm can
be cryopreserved (frozen) and stored to be used at a time
his female partner will undergo egg collection for in vitro
fertilization (IVF). Intracytoplasmic sperm injection (ICSI)
is required due to the low number of sperm. Intrauterine
insemination is not possible with this type of sperm collection.
- TESTICLE- The two male sexual glands contained
in the scrotum. They produce the male hormone, testosterone,
and produce the male reproductive cells, sperm.
- TESTICULAR BIOPSY (TESE)- A procedure that takes
a small sample of testicular tissue for microscopic examination.
Sperm may be retrieved using a testicular biopsy when a
tubal blockage prevents sperm from being ejaculated.
- TESTICULAR FAILURE- Primary: A congenital, developmental
or genetic error resulting in a testicular malformation
that prevents sperm production. Secondary: Acquired testicular
damage, for example, from drugs, prolonged exposure to toxic
substances, or a varicocele.
- TESTICULAR STRESS PATTERN- A semen analysis result
showing decreased sperm count, poor sperm motility and morphology.
- TESTOSTERONE- The male hormone responsible for
the formation of secondary sex characteristics and for supporting
the sex drive. Testosterone is also necessary for spermatogenesis.
- THIRD PARTY REPRODUCTION- The use of oocytes,
sperm, embryos or a uterus of someone other than one's partner.
- THYROID GLAND- The endocrine gland in the front
of the neck that produces thyroid hormones to regulate the
body's metabolism.
- TORSION- Torsion means twist. The twisting of
the testis inside the scrotum will cause extreme pain and
swelling. The rotation twists off the blood supply and causes
severe damage to the testicle. Torsion of the ovary may
occur in a woman experiencing hyperstimulation-a complication
of ovulation induction treatment. A man and a woman with
torsion of their gonad are at risk of losing the gonad.
This is a surgical emergency.
- TSH- Thyroid Stimulating Hormone is released by
the pituitary gland to increase thyroid hormone production.
TSH results can reveal whether thyroid function is normal,
which is necessary for normal ovulation.
- TUBAL FACTOR INFERTILITY- Structural or functional
damage to one or both fallopian tubes that reduces fertility.
- TUBAL REANASTOMOSIS- Reversal of a tubal ligation.
- TUBOCORNUAL ANASTOMOSIS- Surgery performed to
remove a blocked portion of the fallopian tube and to reconnect
the tube to the uterus. Tubouterine implantation may also
be performed to remove fallopian tube blockage near the
uterus and reimplant the tube in the uterus. This procedure
is performed far less often because of the ready availability
of IVF treatment. IVF therapy offers excellent success without
requiring the women to undergo general anesthesia and major
abdominal surgery for this tubal surgery.
- TUBOPLASTY- Plastic or reconstructive surgery
on the fallopian tubes in order to correct abnormalities
which may lead to blockage or otherwise cause infertility.
- TUBOTUBAL ANASTOMOSIS- Surgery performed to remove
a diseased portion of fallopian tube and reconnect the two
ends. Can also be done for sterilization reversal for those
who have had their tubes tied.This procedure is performed
far less often because of the ready availability of IVF
treatment. IVF therapy offers excellent success without
requiring the women to undergo general anesthesia and major
abdominal surgery for this tubal surgery.
- TUBOVARIAN ABSCESS- A pocket of infection and
puss that forms involving the ovaries and fallopian tubes.
This can cause severe pain. Hospitalization with intravenous
antibiotics may be required. Should a woman not improve
with antibiotic therapy, surgical removal of one or both
tubes and sometimes the one or both ovaries is done as a
lifesaving measure.
- TURNER'S SYNDROME- The most common genetic defect
contributing to female fertility problems. The ovaries fail
to form and appear as slender threads of atrophic ovarian
tissue, referred to as streak ovaries.Karyotyping will reveal
that this woman has only one female (X) chromosome instead
of two. (46, XO Karyotype).
- TWO PRONUCLEAR STAGE EMBRYO- Normally, when fertilization
occurs, a sperm penetrates an egg resulting in a two pronuclear
stage (2PN-one cell) embryo. Each pronucleus represents
a nucleus from the egg and the other from the sperm. Shortly
after this stage, the nuclei combine, the genes fuse and
an embryo is formed.
- ULTRASOUND- Technique for visualizing the follicles
in the ovaries and the fetus in the uterus, allowing the
estimation of size. Often used to monitor growth of ovarian
follicles, retrieve oocytes, or follow the developing pregnancy.
- UMBILICAL CORD- Two arteries and one vein encased
in a gelatinous tube leading from the baby to the placenta.
The umbilical cord is used to exchange nutrients and waste
between the mother and the developing baby.
- UNDESCENDED TESTICLES (Cryptorchidism)- The failure
of the testicles to descend from the abdominal cavity into
the scrotum by one year of age. If not repaired by age six,
it may result in permanent infertility because the testicles
are kept too warm within the abdominal cavity; sperm require
1 degree below core body temperature, which is why the testicles
need to be within the scrotum. If an undescended testicle
is left in place and not surgically removed before puberty,
a man has a 25% risk of testicular cancer forming in that
testicle. Therefore, such testicles are removed if they
cannot be surgically brought into the scrotal sac during
infancy.
- UNEXPLAINED INFERTILITY- Infertility for which
no cause has been determined despite a comprehensive evaluation
of
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