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A
Acrosome Reaction: The process by which the cap over the head of the sperm, the
acrosome, is removed to expose the portion of the sperm head containing special enzymes
that make it possible for the sperm to penetrate the cells and structures surrounding the
egg.
Adenomyosis: Adenomyosis: A benign disease that involves the abnormal growth of
endometrial tissue (the lining of the uterus) into the uterine wall or myometrium. Can be
associated with abnormal bleeding or periods and some data suggest lower pregnancy rates
in women with adenomyosis.
Adhesions: Scarring a result of tissue injury. The damage can be caused by infections
such as Gonorrhea and Chlamydia, or to previous operations such as removal of cysts or
appendectomy. Endometriosis also causes adhesion formation. Adhesions involving the tubes
and/or the ovaries can cause infertility by preventing the normal pick-up of the egg from
the surface of the ovary. If adhesions are mild, they can be treated by laparoscopic
surgery. If the disease is severe however, surgery will not restore normal fertility.
Alpha Fetal Protein: A protein secreted by fetal tissue that can be present in the
mother's bloodstream. If present in high levels, it can be associated with congenital
fetal anomalies such as neural tube defects.
Antisperm Antibodies: Antibodies directed against sperm. If directed against the head
of the sperm, they can interfere with normal fertilization.
Artificial Uterine Insemination: The process of depositing washed sperm inside the
uterine cavity. A thin catheter is used, connected to a syringe that contains the washed
sperm. The catheter is introduced through the cervix and deep inside the uterus. Cramping
sometimes does occur but is short-lived. Artificial insemination is commonly used with
ovulation inducing medications when, for instance, there is abnormal cervical mucus.
Arcuate Uterus: A mild deformity of the uterus that involves the presence of a very
small separation in the midline of the fundus (the upper part of the uterus) inside the
uterine cavity. This condition is usually not associated with infertility or recurrent
miscarriages, and therefore rarely needs any form of therapy.
Assisted Hatching: The process of helping an embryo to hatch by making a surgical slit
in the zona pellucida (see Zona pellucida) or "shell", or by digesting this
"shell" with special enzymes.
Assisted Reproductive Technologies (ART) : Infertility treatment procedures such as IUI, GIFT,
ZIFT, and TET, that require laboratory handling of sperm and /or eggs.
Azoospermia: The complete absence of sperm. It can result from obstruction of the vas
deferens (the duct that carries the sperm from the testicles to the urethra) or from
failure of the testes to produce sperm. MESA and TESE are two procedures to obtain sperm
from azoospermic males.
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B
Basal Body Temperature: Abbreviated BBT. Indirect evidence of ovulation can be
obtained with the basal body temperature chart. The temperature can be taken orally with a
special thermometer immediately upon awakening and before any activity. This is recorded
on a special graph that enables you to visualize the different temperature shifts. The
temperature will drop to its lowest point, 1-2 days prior to ovulation, and then rises and
remains elevated until a couple of days before impending menstruation. If the individual
is pregnant the temperature will remain elevated. This elevation is not considered a fever
because it will never exceed 38ºC (100ºF). This test is unfortunately not very reliable
in every woman, and is therefore not used universally.
Bicornuate Uterus: A congenital abnormality of the uterus that involves a partial lack
of fusion of the two parts of the uterus to varying degrees. A single cervix is present.
In the majority of cases it does not cause infertility, but recurrent miscarriages have
been reported in rare instances, similarly to premature births. If treatment is needed, it
is through abdominal surgical repair.
Blastocyst: An embryo that has undergone multiple cellular divisions with the formation
of a cavity within it. A fertilized egg reaches the blastocyst stage usually 4 to 5 days
after fertilization.
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C
Capacitation: The changes that a sperm goes through to be capable of
penetrating the layers covering the egg. It involves the sequentially timed release of a
series of enzymes, which allows the sperm to digest a passage through those layers.
Cervical Cultures: The process of obtaining samples (of secretions) from the cervix and
culturing them on special media for different types of infectious organisms such as
Chlamydia, Gonococcus and Ureaplasma. These sexually transmitted diseases, if present, can
cause infertility by damaging the fallopian tubes or can interfere with implantation of
the embryo by infecting the lining of the uterus. They are easily treated with
antibiotics.
Cervical Mucus: Cervical mucus is secreted by glandular cells that are present in the
cervix. This mucus protects the uterus from invasion by bacteria present in the vagina. It
also plays an important role in infertility. The cervical mucus, in response to the
estrogen hormone, becomes thin and elastic at the time of ovulation. This allows the sperm
to travel through the cervix and the uterus to reach the egg in the fallopian tube. It
also helps the sperm to stay alive in the cervix for a longer period of time. A thick and
dense mucus could prevent the passage of sperm through the cervix. The cervical mucus is
checked by the Postcoital test.
Cervical Stenosis: Narrowing of the cervical canal in such a way that menstrual flow
can partially or completely be impeded. It is often the result of cervical injury due to
surgery such as cone biopsy done for an abnormal Pap smear. It can cause infertility by
hampering the normal passage of sperm through the cervix, and can often be treated by
intrauterine insemination that bypasses the cervix altogether.
Cervix: The part of the uterus that opens into the vagina. It is the segment that is
checked for abnormal cells by a Pap smear. It is connected to the uterine cavity by a
hollow canal called the cervical canal. The cervix secrets mucinous secretions (see
Cervical Mucus) which play a major role in the transport of sperm in its journey towards
the egg.
Chemical Pregnancy: A pregnancy in its earliest stages that was detected by blood
hormone levels but a gestational sac never developed.
Chlamydia: A bacteria responsible for a sexually transmitted infection that can affect
the tubes by causing permanent damage and thus infertility. Often occurs without
significant symptoms.
Chromosome: The nuclear structure of every living cell. Every human cell has normally
46 chromosomes. These chromosomes are made up of genes that govern all of the body's
functions, and are also responsible for all the physical characteristics of an individual.
Human gametes (i.e. eggs and sperm) contain only 23 chromosomes. When unified during
fertilization, the total number of 46 chromosomes is thus restored. Abnormalities of
chromosomes can result in miscarriages or congenital abnormalities. Age affects the
quality of chromosomes in an egg and that is why infertility and miscarriages are more
common in older women. For instance, the incidence of Down's Syndrome increases when a
woman gets older.
Classic Surrogacy: The use of a third party to carry a baby to term. In classic
surrogacy, the surrogate provides the egg and the male partner provides the sperm. This is
not performed at Pacific Fertility Center.
Clinical Pregnancy: A pregnancy that has advanced to a stage where a gestational sac
and/or a fetus can be seen by ultrasound.
Clomiphene Citrate: Also known by the trade names of "Clomid" and
"Serophene", it is a synthetic non-steroidal estrogen hormone that is commonly
used for ovulation induction. It comes in 50 mg tablets that are taken by mouth once a day
for 5 days in the early part of the menstrual cycle. Due to its antiestrogenic actions,
some of its side effects include thickening of the cervical mucus and thinning of the
endometrial lining. The former can interfere with normal passage of sperm through the
cervix to reach the egg, and the latter with implantation. Some women may complain
of hot flashes (10%), nausea and/or breast discomfort (2-5%). Visual symptoms (blurring)
rarely occur (<1.5%) but are an indication to discontinue therapy. About 10% of women
conceiving with clomiphene will have a multiple birth, usually twins.
Clomiphene Citrate Challenge Test (CCCT): The Clomiphene Challenge Test (CCCT) is a
test for ovarian reserve or reproductive potential based on egg quality. A blood test on
cycle day 2 or 3 for the hormones FSH and estradiol is performed first. Then the woman
takes two 50 mg tablets of Clomiphene Citrate from days 5-9 of the cycle. A second
blood test for FSH only is performed on Day 10. Ideally, the FSH should be less than 10
mIU/mL and the estradiol less than 80 pg/mL. If elevated, these tests may indicate poorer
changes for successful conception.
Co-Culture: The process of helping embryos grow and develop in the presence of cells
derived from the growth of other tissues such as tubal cells. The purpose is to enhance
the growth of healthy embryos.
Corpus Luteum: A follicle that releases an egg at the time of ovulation is subsequently
called the corpus luteum. This is initially a partially collapsed cystic space that later
can become a true cyst, and is very active in hormone secretion. Its major product is
progesterone. If pregnancy does not occur, the corpus luteum "dies" roughly 10
to 14 days after ovulation. This leads to a sudden drop in progesterone levels, which in
turn leads to menstruation. If, on the other hand, pregnancy occurs, the newly developing
placenta secretes the HCG hormone, which salvages the corpus luteum and stimulates it to
continue making progesterone. This placental support of the corpus luteum is indispensable
for the first 7 weeks of pregnancy. From that point on, the placenta starts making its own
progesterone and the corpus luteum is no longer needed. Therefore, it shrinks and becomes
the "corpus albicans".
Cryopreservation: The process of freezing sperm or embryos in extremely low
temperatures (-196°C). This technique has been used for decades to
freeze sperm. It allows us to quarantine the sperm while the donor is tested for
transmittable infectious diseases. The sperm can then be thawed when necessary and used in
artificial insemination. More recently, we have been able to freeze and preserve human
embryos. This has enabled us to freeze and save embryos resulting from in vitro
fertilization. These embryos can also be later thawed and transferred back to the uterus.
This allows us to transfer fewer embryos at any one transfer, reducing the risks of
high-order multiple births.
Cumulus Granulosa: A group of cells that surround the human egg. They are responsible
in the nourishment of that egg. These cells secrete the hormone estrogen that causes the
uterine lining to grow.
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D
Diethylstilbestrol (DES): A synthetic estrogen compound that was inappropriately
prescribed in the 1960's to prevent threatened miscarriages. Many women exposed to this
compound while their mothers were pregnant with them have subsequently developed a variety
of genital tract anomalies. Some of these anomalies include an abnormally shaped and small
uterus. DES exposed women have also been shown to be at an increased risk for infertility,
miscarriages, ectopic pregnancy and certain vaginal tumors.
D & C: Dilation and curettage. It is the process of gradually dilating the cervix
to the point of being able to introduce an instrument (curette) to scrape the surface of
the uterine cavity (endometrium). A suction cannula is also often used if the amount of
tissue removed is great. This procedure is often used to treat abnormal bleeding,
incomplete miscarriages and abnormal uterine pathology such as polyps or small fibroids.
It is done under sedation and sometimes under general anesthesia. Potential complications
include infection and uterine perforation.
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E
E2: See Estradiol.
Ectopic Pregnancy: A normal pregnancy results when the embryo implants inside the
uterus. When implantation occurs outside the uterus, an ectopic pregnancy ensues. Such an
abnormal pregnancy can be located in the tubes, the ovaries, the cervix or inside the
abdomen. In 1987, roughly 2 out of every 100 women who were known to conceive were
hospitalized for an ectopic pregnancy. This incidence is slightly higher with in vitro
fertilization. The most common symptoms are abnormal bleeding and lower abdominal pain.
Women who have tubal damage (such a scarring from infection) are at an increased risk for
an ectopic pregnancy. About one out of four conceptions after an ectopic pregnancy is a
repeat ectopic pregnancy.
Egg: Lay term for oocyte. The largest cell in the human body. Unites with the sperm to
make a zygote and eventually a baby. Carries 23 chromosomes.
Egg Donation: This process involves the stimulation of a women with fertility drugs,
the retrieval of her eggs, their fertilization with the recipient's partner's sperm, and
the transfer of the resultant embryos to the uterus of the recipient. Women who might need
or will need egg donation include the following: 1) women with no ovaries, either because
of their congenital absence or their surgical removal, 2) women with early (premature)
menopause, 3) older women, 4) women who fail to produce adequate number of eggs after
stimulation with fertility drugs, 5) women with serious transmittable genetic traits or
diseases, 6) women who have decreased ovarian reserve, or 7) women who are about to
undergo surgery for ovarian cancer, in which case they can freeze the resultant embryos
for use at a later date. Egg donors should be young women and should ideally have had
prior pregnancy. Most egg donations are done anonymously, however known donors are also
acceptable in many instances.
Egg Retrieval: The process of introducing a long needle through the vagina and into the
ovaries to aspirate the follicles that contain the eggs. It is done under ultrasound
guidance. The ovaries are visualized on the ultrasound screen and the needle, which is
aspirated with gentle suction. The aspirated fluid is sent to the embryologist who
examines it and isolates the egg. The procedure is done under heavy sedation and is
therefore painless. It takes about 20 minutes to complete and the patient is discharged
one hour later. The patient is not allowed to drive because of slight drowsiness for a few
hours after the procedure. Complications are very rare and include bleeding and infection.
Embryo: A fertilized egg that has begun the cycle of cell division.
Embryo Transfer: The process of depositing fertilized eggs (or embryos) inside the
uterus. This often occurs 3 to 5 days following egg retrieval. A predetermined number of
embryos are first placed inside a special catheter, which is then introduced inside the
uterus through the cervix. The embryos are then gently injected and the catheter removed.
This procedure is done in a position similar to a pelvic examination for a Pap smear. The
patient will remain in that position for roughly fifteen minutes before being discharged.
The number of embryos to be transferred depends mostly on the age of the woman and the
quality of the embryos. The patient will make the informed decision regarding the number
of embryos to be transferred after conferring with her physician.
Endometrial Biopsy: A procedure that involves taking a small sample of tissue from the
inside lining of the uterus (called the endometrium). An endometrial biopsy is done for
many reasons. In a case of investigation for infertility, it is performed to evaluate the
endometrium for its readiness to accept the embryo. An abnormal test is said to be
"out-of-phase" in relation to the date of the cycle. An endometrial biopsy is
also performed for abnormal uterine bleeding to diagnose hormonal imbalances or an
anatomic cause for the bleeding, such as polyps, hyperplasia (abnormal benign growth of
the endometrium) or cancer.
Endometriosis: The presence and growth of tissue resembling the endometrium outside the
uterus. Typical locations include over the tubes, the ovaries, the uterus, the peritoneal
lining of the pelvis, the bowel and other unusual areas. The disease is benign but usually
progressive. In advanced stages it causes severe scarring of the ovaries and/or tubes
which can result in infertility. Even milder forms of the disease whereby only few spots
of endometriosis are present are associated with infertility. The cause of endometriosis
is not known with certainty, but several mechanisms are involved. More recently,
immunological causes have been implicated in the mechanism of infertility in patients with
endometriosis. The classic symptoms of endometriosis are cyclic pelvic pain and
infertility. Medical or surgical therapy is successful only for the relief of pain.
Studies have shown that medical therapy does not improve infertility. Surgery for
endometriosis is similarly not successful to treat infertility except in instances where
there are mild adhesions partially blocking the tubes.
Endometrium: The inside lining of the uterus where implantation of the embryo occurs.
Endoscopy: A surgical procedure to view the pelvic organs (laparoscopy) or the uterine
cavity (hysteroscopy) via a small, fiber-optic telescope. Therapeutic surgery may also be
performed during these procedures.
Epididymis: Sperm travels from the testicles through a tubular structure called the
epididymis into the vas deferens and through the urethra and penis. Sperm undergoes
advanced maturation during its stay in the epididymis.
Estrogen (or Estradiol): The major female hormone secreted by the ovaries. A normally
menstruating woman ovulates once a month about 14 days after the start of the menstrual
cycle. The egg secretes estrogen as it grows. The level of this hormone peaks at the time
of ovulation, it then drops to peak again about a week after ovulation. Estrogen is
responsible for the normal growth and differentiation of both the follicle and the egg. It
also plays an important role in preparing the endometrial lining where implantation would
occur in case of pregnancy. Estrogen also changes the quality and texture of the cervical
mucus, making it thinner and more elastic. This allows the normal passage of sperm through
the cervix towards the uterus and the tube where it meets the egg. The hormone estrogen is
important in helping to maintain healthy vaginal tissue. It also has beneficial effects on
bone and the cardiovascular system. For these reasons, estrogen replacement is recommended
to most menopausal women. When estrogen is measured on the second or third day of
the cycle, its level reflects the health of the eggs. Ideally, a level less than 80 ug/ml
is desirable prior to the initiation of ovulation induction or IVF.
Estradiol Valerate: An estrogen preparation for human supplementation to prepare the
uterine lining for implantation.
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F
Fallopian Tubes: A hollow muscular tubular organ that is connected to the uterus at one
end, and opens inside the abdomen close to the ovaries at the other. The latter part is
made of finger-like projections also called "fimbria" that pick up the ovulated
egg from the surface of the ovary. The egg meets the sperm at the mid-junction of the tube
where fertilization occurs. The fertilized egg then travels to the uterine cavity where
implantation takes place. There are normally two fallopian tubes, one on each side of the
uterus. Damage to these tubes is common with sexually transmitted diseases, such as
Gonorrhea and Chlamydia. They can also be easily damaged during pelvic or abdominal
surgeries or in patients with severe endometriosis. Reconstructive tubal surgery for
infertility can be done in some women. The success rate depends on the state of the tubes
prior to the surgery. If for instance, the tubes are blocked and swollen, the success rate
is extremely small in achieving pregnancy. In such cases, IVF should be the treatment of
choice. Recent data has also shown that swollen tubes lower IVF success rates, therefore
it is strongly recommended that swollen damaged tubes (hydrosalpinx) be surgically removed
prior to IVF.
Fertilization: The unification of sperm and egg to form a zygote (the earliest stage of
human life). The zygote would then become an embryo, and then a fetus. A sperm or an egg
contains half of the genetic make-up of its species. A normal human cell contains 46
chromosomes, while an egg or sperm contains only 23 chromosomes. After successful and
normal fertilization, the number of chromosomes becomes 46 (23 from the egg and 23 from
the sperm).
Fetus: A fertilized egg is called a zygote. Further cellular division and
differentiation yields an embryo. Once organic differentiation occurs, i.e., the embryo
acquires human-like features, it is called a fetus.
Fibroid Tumors (or Myomas): Benign tumors of the muscle of the uterus. Fibroids develop
in one of every four women sometimes during their lifetime. If present inside the uterine
cavity, they can interfere with implantation. Fibroids can also cause problems if they
become large in size and impinge or put pressure on the uterine lining. They are treated
by surgical removal, either via laparoscopy, hysteroscopy, or a major abdominal surgery.
Fimbriae: The delicate finger-like projections at the end of the fallopian tubes that
are responsible in picking-up the egg from the surface of the ovary and transporting it to
the inside of the tube.
Follicle: A fluid-filled space (like a balloon) present inside the ovary that contains
and nourishes the egg. In a normal cycle, a woman will usually ovulate only one egg. Very
early in the cycle however (and actually before the cycle even begins), many small minute
follicles containing immature eggs are recruited. During the first 5 to 7 days after the
start of a period only one of these follicles will mature and grow. This leading follicle
will increase and be ready for ovulation roughly 2 weeks after the start of the menstrual
cycle. The follicle will then burst with ovulation and release the egg that is pick-up by
the finger-like projections (fimbria) of the fallopian tube. The collapsed follicle will
become the corpus luteum.
Follicle Stimulating Hormone: Abbreviated as FSH. A hormone secreted by the pituitary
gland; FSH stimulates the growth and development of ovarian follicles. It is the main
hormone present in the gonadatropin medications Gonal-F and Follistim, and comprises half
of the hormones in Pergonal, Repronex, and Humegon. A blood test for this hormone on the
third day of the menstrual cycle is crucial in evaluation the function of the ovaries. A
significantly elevated level (>10) implies impending ovarian failure or decreased
ovarian reserve. These women will not respond adequately to ovulation inducing
medications. The level of FSH also assists us in determining the ideal dosage and regimen
of fertility agents necessary to initiate proper ovarian stimulation in a subsequent cycle
of treatment.
FSH: See Follicle Stimulating Hormone.
Follistim: Use same directions as for Gonal-f
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G
Gamete: The female egg and the male sperm.
Gestational Carrier: A woman who accepts to bear (or be pregnant with) the child of
another woman who is incapable of becoming pregnant using her own uterus. Women who need
surrogates include those who do not have a uterus, have an abnormal uterine cavity, have
had several recurrent miscarriages or have had recurrent failed IVF cycles. An older term
for what we now refer to as a "gestational carrier".
Gestational Surrogacy: Also see Surrogate & Classic Surrogacy. In gestational
surrogacy, the gestational carrier does not contribute any genetic materials since the egg
and the sperm come from prospective parents.
GIFT: Gamete Intrafallopian Tubal Tranfer: A procedure that involves introducing sperm
and egg (also called gametes) inside the fallopian tube. This is accomplished by
laparoscopic surgery, whereby under direct visualization via a telescope inserted through
the umbilicus, eggs and sperm are deposited by a catheter in the mid-section of the
fallopian tube. It can only be performed when the individual has normal tubes. The success
rate with GIFT depends on the Fertility center and the expertise of the physician. In most
good IVF centers, success rates with GIFT are lower than IVF. Since it is an invasive
procedure (requiring laparoscopy) and is more costly, its indications are limited. It is a
good alternative when a patient is undergoing laparoscopy to investigate long-standing
infertility. If planned in advance GIFT can then be performed at the same time if a normal
tube is present.
GnRH: Gonadotropin releasing hormone is the single most important hormone controlling
ovarian function. It is secreted by the hypothalamus and controls LH and FSH secretion by
the pituitary gland, which in turn directly controls ovarian function. Absent or abnormal
secretion of GnRH results in irregular cycles and lack of ovulation. GnRH is secreted in
an episodic manner by the hypothalamus to be able to carry its functions.
GnRH-Agonist: A synthetic hormone similar to GnRH. Given in a continuous fashion by
daily subcutaneous injections (Lupron) or nasal spray (Synarel). It will actually suppress
pituitary and ovarian function. This interesting fact is used to suppress the
hypothalamic-pituitary-ovarian axis in many women undergoing ovulation induction for IVF.
It allows us to control the ovaries ourselves without interference from the hypothalamus
or the pituitary.
Gonadatropins: Follicle Stimulating Hormone (FSH) and Lutenizing Hormone (LH) are
pituitary hormones that stimulate egg production, ovulation, and estrogen and progesterone
production. The gonadatropin FSH is the hormone that is the main ingredient in Gonal-f,
Follistim, Pergonal, Repronex and Humegon. Injections of gonadatropin medications will
cause the ovaries to make multiple eggs.
Gonal-f: This fertility medication is a gonadatropin hormone containing very pure human
FSH. It is produced by cells that have been genetically engineered through recombinant DNA
technology to produce large quantities of human FSH. It is administered by subcutaneous
injection.
Gonorrhea: A sexually transmitted disease than can cause tubal disease and infertility.
If caught early, it is totally curable without a bad sequel as far as fertility potential
is concerned. Common symptoms include pelvic pain, vaginal discharge and fever.
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H
HCG: Human Chorionic Gonadotropins: The major hormone secreted by the placenta.
In the early stages of pregnancy continued survival of the corpus luteum (the follicle
that released the egg) is totally dependent on HCG, and in turn, the survival of the
pregnancy is dependent upon hormones secreted by the corpus luteum the 7th week
of pregnancy. Thereafter, the corpus luteum is gradually replaced by placental hormonal
secretions. Studies have shown that after administering HCG intramuscularly, ovulation
occurs 38 to 40 hours afterwards. This is why during an IVF cycle egg retrieval is
scheduled 30 to 40 hours after the HCG shot. Similarly, during simple ovulation induction
with Clomiphene or Gonadatropins, HCG is sometimes given to trigger ovulation. HCG is
chemically very similar to LH or lutenizing hormone, the signal for the ovulation process
to begin. Inseminations or intercourse is then planned according to the time that HCG was
administered.
Hemi-zona Assay: A test that helps determine if sperm is able to attach and penetrate
the covering of an egg or zona pellucida.
Human Chorionic Gonadotropin: See HCG.
Hydrosalpinx: A hydrosalpinx is a fallopian tube that is filled with fluid.
Hyperprolactenemia: A condition where there is elevated blood levels of the hormone
Prolactin. This hormone is secreted by the pituitary gland. There are several diseases
that can result in abnormally high Prolactin levels. Most commonly, this is due to a small
and benign Prolactin secreting tumor in the pituitary gland called Prolactinoma. Often
this can result from an abnormally slow functioning thyroid gland. The treatment is
specific to the cause, but medical management with Bromocryptine (Parlodel) is the first
line of therapy.
Hypothalamus: Portions of the base of the brain that has a major role in regulating the
hormones involved in fertility and the menstrual cycle. (See GnRH).
Hysterosalpingography: HSG. An x-ray dye test used to visualize the uterus and tubes.
It involves the injection of a radio-opaque dye through the cervix and into the uterus and
tubes. A series of x-rays is taken and the contour and patency of the uterus and tubes are
assessed. The procedure can be somewhat uncomfortable, and may result in some cramping
which often lasts for a few hours after the procedure. The likelihood of this occurring
can be diminished or lessened by taking Ibuprofen or other pain medications, one hour
before the test. In a small percentage of cases an HSG can cause tubal infection. This is
more common in women who have one or more blocked tubes. If this is the case, the
individual should immediately contact her infertility specialist to be placed on
antibiotics for a week.
Hysteroscopy: This is a procedure that involves the introduction of a thin
telescope-like instrument through the cervix into the uterine cavity. It enables the
direct visualization of the uterine cavity and its lining, thereby providing an
opportunity to diagnose abnormalities such as polyps, fibroids or adhesions. It is best
performed 2 to 7 days following the end of menstruation. Diagnostic hysteroscopy can be
performed with general anesthesia in the doctor's office. The procedure is relatively risk
free and is significantly less painful than a hysterosalpingogram. All patients suspected
of having surface lesions involving the inner lining of the uterus should have a
diagnostic hysteroscopy performed.
Hysterosonogram: As a diagnostic procedure, the hysterosonogram is equal to the
hysteroscopy procedure in identifying polyps or fibriods in the uterine cavity. It is
performed in the doctor's office or in a hospital radiology department and does not
require anethesia. Ibuprofen is sometimes taken prior to the procedure to decrease the
incidence of cramping. A small tube with a tiny balloon is placed into the cervix. Under
vaginal ultrasound visualizatio, a small amount of sterile saline solution is placed into
the uterine cavity and if there are any polyps or fibroids in the cavity. These can easily
be seen. If present, a hysteroscopy is then performed to remove the lesion.
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I
ICSI: Intra-Cytoplasmic Sperm Injection: It is a technique whereby a single
sperm is injected Cytoplasmic into an egg by the embryologist in the laboratory. It
is Sperm Injection: performed when there is a very low sperm count or when the sperm show
very poor motility. It is also indicated when there is poor fertilization of eggs in a
previous IVF cycle. The procedure involves grasping a single sperm with a very fine
needlepoint pipette and then gently inserting it inside the egg and releasing the sperm.
Implantation: The process by which an embryo burrows within the endometrial lining of
the uterus.
IUI: Intrauterine Insemination: See Artificial insemination.
Intracytoplasmic Sperm Injection: See ICSI.
Intrauterine Insemination: See Artificial insemination.
In Vitro Fertilization: See IVF.
IVF: Literally "fertilization in glass," IVF comprises several basic steps:
the woman is given fertility drugs that stimulate her ovaries to produce a number of
mature eggs; at the proper time, the eggs are retrieved by suction through a needle that
has been inserted into her ovaries; the eggs are fertilized in a glass Petri dish, or in a
test tube, in the laboratory with her partner's or donor sperm; and subsequently the
embryos are transferred into the body.
IVF with a Gestational Carrier (surrogate): In vitro fertilization using the
prospective parents' eggs and carrier (surrogate): sperm to create embryos which are
subsequently transferred into the uterus of another woman who then carries the pregnancy
to term.
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K
Karyotype: An arrangement of all the chromosomes of a cell. A normal
human cell has 46 chromosomes. Abnormalities of certain chromosomes, such as an extra
chromosome, can be detected by doing a karyotype. This test is done in couples who suffer
from recurrent miscarriages to look for a specific chromosomal abnormality called
"translocation", which can result in the loss of important genetic material
therefore causing miscarriages. In men with severe male factor infertility or azoospermia,
there is an increased chance that the man has a genetic abnormality and a karyotype of his
blood is often recommended.
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L
Laparoscopy: The process involves the introduction of a thin telescope-
like instrument through the belly button into the pelvis for direct visualization of the
pelvic organs. At the same time, like instrument through the belly button into the pelvis
for direct visualization of the pelvic organ. At the same time, dye can be injected
through the cervix, and its flow can be traced into and through the fallopian tubes under
direct vision. The procedure is conducted under general anesthesia, but the patient does
not have to stay overnight in the hospital. The patient might have mild abdominal
discomfort for 1 or 2 days after the procedure, but can usually resume normal activities
even as early as the next day. The risks with laparoscopy are very small and include the
following: (1) Infection (2) Bleeding (3) Damage to nearby organs, such as the bowel (4)
Reaction to anesthesia. Very rarely abdominal surgery is needed to take care of a
complication. Indications for laparoscopy are many and include the following: 1)
Diagnostic, to check for suspected problems such as infertility, blocked or damaged tubes,
scarring, ovarian tumors and uterine anomalies such as fibroids, 2) Diagnosis and
treatment of Endometriosis, 3) Lysis (cutting) of adhesions (scarring), 4) Removal of
fibroids, 5) Removal of ovarian cysts or tumors, 6) GIFT, and other miscellaneous
indications.
Laparotomy: A procedure in which the abdomen is opened with an incision to expose its
contents.
LH: Luteinizing hormone: A hormone secreted by the pituitary gland involved in the
control of ovulation. The role of LH is to trigger ovulation and help prepare the
endometrial lining for implantation. The level of this hormone starts to rise roughly 24
hours prior to expected ovulation. We can check this by a home using ovulation predictor
kit, such as Clear Plan Easy or OvuQuick One-Step. When the test color matches the
control, this signifies the presence of elevated levels of LH in the blood. The individual
then can plan intercourse within 24 hours of that positive test.
Lupron: Known medically as a GnRH-agonist (see GnRH). Lupron is a commonly used
medication in IVF and also for the treatment of severe endometriosis or large uterine
fibroids. Lupron taken continuously either by daily subcutaneous (under the skin)
injections or monthly intramuscularly depot injections will suppress the pituitary-ovarian
axis. Simply stated, it will make the ovaries "go to sleep" and stop
functioning, therefore stopping the secretion of hormones such as estrogen and
progestrone. Lupron is frequently used in IVF to prevent premature ovulation.
Luteinizing Hormone: See LH.
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M
Macrophage: Specialized cells of the immune system that help fight infections.
Macrophages also attack foreign bodies and are involved in inflammation.
MESA: (Microsurgical Epididymal Sperm Aspiration) A surgical Procedure to remove sperm
from the epididymus in men who have an obstruction of the vas deferens or epididymus (or
congenital absence of the vas deferens). Also in a procedure for obtaining sperm from men
who have had a prior vasectomy. Unlike the TESE procedure, millions of sperm can usually
be obtained and excess sperm are frozen for subsequent IVF cycles if needed. The sperm are
then injected into the female partner's eggs (see ICSI).
Meiosis: The cellular division that occurs in sexual gonads (ovaries and testicles) to
reduce the number of chromosomes in the egg and the sperm in half. When these latter unite
with fertilization, the original 46 chromosomes are reduced.
Menopause: The period in a woman's life when menstruation stops. The average age of
menopause in the United States is 51. The last few years prior to menopause, also called
the climacteric, menstrual cycles become irregular in many women.
Micromanipulation: Advanced techniques used to manipulate gametes, i.e. eggs and sperm,
to enhance successful fertilization and implantation. Intracytoplasmic sperm injection is
one form of micromanipulation. (See ICSI)
Mitosis: The replication of cells by equal division. Soon after fertilization, the
zygote undergoes successive mitoses and thus yields an embryo. All organs in the body that
regenerate do so by mitosis.
Morula: An early phase of a growing embryo that resembles a mulberry.
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N
Nucleus: Structure in the cell that contains the chromosomes.
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O
Oocyte: See Egg.
Ovary: The small oval organs measuring 2 by 1.5 inches present in a woman's pelvis and
responsible for making eggs.
Ovulation: The process when a mature egg is released from the surface of an ovary.
Ovulation Induction: Stimulation of the ovaries by fertility drugs to produce and
release one or more eggs.
Ovarian Hyperstimulation: Complication of taking fertility drugs resulting in gross
enlargement of the ovaries. It is sometimes accompanied by accumulation of fluid in the
abdomen and lungs, and abnormal blood tests. It occurs in less than 1% of the time in its
severe forms requiring hospitalization. Hyperstimulation occurs when the ovaries produce
excess eggs in response to stimulation by fertility drugs. Monitoring the response allows
us to see which patients are at risk and helps us take steps to minimize the problem from
occurring.
Ovarian Reserve: As women get older, the number of viable, healthy eggs remaining in
the ovaries diminishes. While a woman continues to ovulate monthly from her later 30's
until menopause, the eggs produced are increasingly at risk for genetic abnormalities such
as Down syndrome. Ovarian reserve is a term used to refer to the reproductive potential a
woman has; that is, the chances that she will have a successful pregnancy with her own
eggs. Cycle Day 2 or 3 FSH/estradiol testing and the Clomiphene Citrate Challenge tests
for ovarian reserve.
Ovulation Predictor Kit: See Ovulation.
Ovum Donation: See Egg Donation.
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P
Pelvic Inflammatory Disease (PID): Infection of the pelvic organs that may result
in scarring of the fallopian tubes and /or pelvic adhesions.
Percoll: A chemical that is used to wash the sperm, thus separating motile from dead
ones, therefore enhancing fertility potential.
Pergonal: See HMG, LH and FSH. This fertility medication is one of the oldest
gonadatropin preparations on the market. It is made from the partial purification of FSH
& LH from the urine of post-menopausal women. It is given by intramuscular injection.
See also "gonadatropins".
Pituitary Gland: A small gland present at the base of the brain. It receives
instructions from a specialized area of the brain just above it called the hypothalamus.
The pituitary secretes many important hormones, such as FSH, LH, TSH and Prolactin. FSH
and LH control the ovaries, TSH controls the thyroid gland and Prolactin controls milk
production.
Placenta: The organ that is responsible in the nourishment of the developing embryo.
Abnormalities in the placenta can result in abnormal fetal growth and death.
Polyp: Benign growth of the lining of the uterus or the endometrium. It looks like a
small solid balloon and can interfere with normal implantation and cause infertility,
abnormal bleeding and theoretically miscarriages. Polyps can be missed when examined by a
hysterosalpingogram, but usually are seen at hysteroscopy or mid-cycle endovaginal
ultrasound.
Postcoital Test: A test to check the quality of the cervical mucus and the sperm in it.
It is performed up to 12 hours after intercourse. A small sample of the cervical mucus is
taken (similar to a Pap smear in process) and is examined under the microscope. A good
test will show ample mucus and contain many moving sperm. An abnormal test may be due to
low levels of estrogen, as a side effect of Clomiphene therapy or as a result of antisperm
antibodies.
Preimplantation Genetics: An advanced technique that involves checking the cells of a
developing embryo for genetic and chromosomal abnormalities and thus helping to prevent
serious transmissible genetic diseases. The sex of the offspring can also be determined
through this method. Due to the expense and potential damage to embryos from this
procedure, it is currently used only for couples at risk for having children with genetic
diseases.
Premature Ovarian Failure: Cessation of menstruation due to depletion of ovarian
follicles before the age of 40. It is a cause for infertility requiring egg donation. It
can run in families and be associated with other disease processes such as thyroid disease
or lupus.
Progesterone: A hormone secreted by the ovaries. It belongs to the same family of
hormones such as estrogen, called steroids. It is secreted by the corpus luteum (see
Corpus Luteum), which is the follicle that has produced and released the egg. Progesterone
is produced by specialized cells surrounding the egg and this starts just prior to
ovulation. This hormone plays a major role in preparing the endometrium for implantation.
It also supports the pregnancy through the first few weeks of gestation. The corpus luteum
will stop secreting progesterone if pregnancy does not occur. The progesterone level in
the blood will then drop and menses will start within 24 to 48 hours. This is how a
regular menstrual cycle takes place. If pregnancy occurs on the other hand, the placenta
will start secreting the HCG hormone, and this hormone in turn will salvage the corpus
luteum and make it continue secreting Progesterone.
Prolactin: A hormone secreted by the pituitary gland. Its major role is to control milk
production. Excess secretion can interfere with normal ovulation. This is why Prolactin
levels are checked in every woman during the evaluation process for infertility. Certain
women have elevated Prolactin levels due to a small benign tumor in the pituitary gland or
the brain. These tumors are often called Prolactinomas. They are usually treated by a
medication called Bromocryptine or Parlodel. In rate instances, surgery may be required.
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R
Recipient: A woman who receives the fertilized eggs (often by the husband's sperm) from
an egg donor. These embryos are transferred to her uterus after a 2 to 3 week period of
hormonal preparation to have the uterus ready to accept these embryos. The recipient will
carry, nourish and deliver the infant.
Repronex: A gonadatropin fertility medication that like Pergonal, comes from the
partial purification of FSH and LH from human menopausal urine. Repronex has been approved
by the FDA for subcutaneous administration. See also "gonadatropins".
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S
Saline Sonogram: See "Hysterosonogram".
Selective Reduction: Also known as "multiple pregnancy reduction". A
procedure that is performed to reduce a high order multiple pregnancy such as quadruplets
or triplets, to twins or singleton. It is a relatively simple procedure with minimal risk
of losing a whole pregnancy.
Semen Analysis: A test to check for sperm quantity and quality. A sperm sample
collected by masturbation after three days of abstinence is used for the test.
Sperm Antibodies: Substances in either partner that may attach to sperm and Interfere
with fertilization.
Spontaneous Abortion: A miscarriage that is caused by nature. It can have several
causes, such as a genetically abnormal fetus. Often a D & C is needed to help clean
the uterine cavity from remnant tissue to stop bleeding.
Synarel: A nasal spray medication that can be used instead of Lupron to prevent
premature ovulation during an IVF cycle (see also "GnRH agonist" and
"Lupron".)
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T
TESE: (Testicular Sperm Extraction) A minor surgical procedure usually
performed under local anesthesia, to obtain sperm from the ejaculate. This sperm can then
be injected into the female partner's eggs (see ICSI). Usually only low numbers of sperm
are obtained and are available only for IVF with ICSI on the same day as the TESE.
Testicular Mapping: A diagnostic procedure to identify "pockets" of isolated
sperm production in the testicles of men who have very low sperm production. Once these
areas are located a TESE procedure can be done to find the sperm for IVF and sperm
injection (see "ICSI").
Testicles: Two oval glands present in the scrotum responsible in making the male
gamete, the sperm. It also secretes many of the male hormones responsible for masculinity.
Testosterone: The main hormone secreted by the testicles and responsible for male
characteristics, such as beard growth, deep voice, and sperm maturation.
Third Party Parenting: The involvement of a third person (a person outside of the
couple) to create a baby. There are several ways to participate in third party parenting:
egg donation, sperm donation, IVF with a gestational carrier and classic surrogacy.
TSH: A hormone secreted by the pituitary gland that controls the thyroid gland.
Elevated levels imply abnormally low thyroid function. The level of this hormone in blood
is checked in most women with infertility because certain thyroid diseases may be
associated with infertility.
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U
Ultrasonography: One of the most common imaging techniques a woman undergoes during
treatment of infertility. Almost all ultrasound examinations for this purpose are
currently done with a vaginal transducer. An ultrasound transducer emits acoustic sound
waves that bounce back when they hit different types of tissues in the body along its
path. These waves are then recaptured by the transducer and sent to the ultrasound
computer. The ultrasound transforms these waves into gray scale pictures that are seen on
a monitor screen. The texture of the particular tissue that the ultrasound wave traverses
or hits determines the way it will look on the monitor. For instance, clear fluids such as
urine will appear black while bony structures will appear white. The vaginal transducer is
about 15 inches long and 1 inch in diameter. Only about 5 inches will enter the vagina.
The procedure is painless for most women and harmless. It enables us to see the pelvic
organs, including the ovaries and the uterus. It is commonly used to diagnose the presence
of ovarian cysts, tumors, uterine fibroids, and pregnancies. It is also used routinely to
follow the growth and development of ovarian follicles during ovulation induction with
fertility drugs in patients who are undergoing IVF.
Ureaplasma: A microorganism that can infect the male and female genital organs. Some
studies suggest an association with miscarriages or even infertility.
Uterine Septum: The presence of a thick membrane that separates the uterine cavity
either partially or completely into two separate cavities. A septum can interfere with
normal implantation and cause recurrent miscarriages. The treatment is done by
hysteroscopy and involves cutting the septum under direct vision.
Uterus: A hollow muscular organ (the size of a small pear) present in the pelvis. It is
connected to the vagina by the cervix and to the abdominal cavity by the fallopian tubes.
Its main function is to contain and nourish the fertilized egg through its stages of
development towards an embryo, a fetus, and eventually an infant. The uterus is lined by a
layer of specialized glandular cells, called the endometrium.
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V
Varicocele: A varicocele is an abnormal dilatation of the veins surrounding the testes.
They are present in 25% of infertile males. Because of this blood pooling, testicular
temperature is raised, which is detrimental to sperm. Treatment is by minor surgery to
ligate the dilated vessels or veins. The success of treatment is controversial. Pregnancy
rates after surgery are reported to be in the range of 30-50%.
Vas Deferens: The segment of the tube that connects the epididymis to the urethra in
males.
Vasectomy: A surgery to ligate the vas deferens in males, thus blocking the transport
of sperm to the urethra. It is a very effective form of contraception. The longer the
period from vasectomy to reversal surgery, the less the chances of success because of
anti-sperm antibodies.
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Z
ZIFT: The transfer of a zygote into the fallopian tube. Also see GIFT.
Zithromax: This is the antibiotic generally known as azithromycin. It is very similar
to Erythromycin but can be given in a single dose instead of a ten day course. It is used
to decrease the chances that the bacteria ureaplasma or mycoplasma may inhabit the uterine
cavity, which could result in decreased chances of embryo implantation.
Zona Pellucida: A translucent noncellular layer, which surrounds the egg and embryo.
Just prior to implantation the zona will be broken and the embryo released to implant in
the endometrium. In some women, especially in women over the age of 37, the zona is
thicker and therefore harder for the embryo to hatch. Assisted hatching is then employed
to help the embryo in this process.
Zygote: A fertilized egg.
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