
DIAGNOSTIC PROCEDURES
Testing for Fallopian Tube and Uterine Abnormalities
PELVIC ULTRASOUND
This is a noninvasive method for evaluating
the uterus and ovaries by using high frequency sound waves rather
than x-rays to show what is inside your body. Because the body contains
over 90% water, sound can be used just as sonar is used in the ocean.
Each time the sound hits a tissue interface, like a blood vessel,
an echo is sent back. Sophisticated, high-speed computers can use
these echoes to create a picture of your internal organs. Ultrasound
carries little risk or discomfort while producing clear images that
enable the physician to count any mature follicles present and examine
the endometrium. Fibroid tumors and ovarian cysts can be diagnosed
as well.
POST-COITAL TEST (PCT)
The post-coital test (also known as a Huhner)
is an excellent means of assessing the interaction of the sperm
and the cervical mucus. In order to reach the fallopian tube and
fertilize an egg therein, the sperm must first migrate through the
cervical mucus. There are many factors which can impair the ability
of the sperm to survive and traverse the cervical mucus, including
infection, prior surgery on the cervix, and production of antibodies
(substances that can kill or immobilize the sperm).
During a normal menstrual cycle, there are only
a couple of days during which the sperm can survive in the cervical
mucus. At other times of the cycle the mucus is a very effective
barrier. Around the time of ovulation, the cervical mucus becomes
very thin and watery and probably even somehow assists the sperm
as they migrate through to the uterus and on to the fallopian tube.
The quality of the cervical mucus as well as the number of sperm
present and their motility will be assessed. The timing of this
test is, therefore, crucial and must be done within 12 hours after
Intercourse.
The post-coital test is an important part of the
evaluation of difficulty conceiving. If it is not normal, other
evaluation or therapy may be suggested.
SPERM ANTIBODY TESTING (INDIRECT IBT)
Is used to rule out the presence of sperm antibodies
in female partner's serum. May be drawn at anytime during the woman's
cycle.
ENDOMETRIAL BIOPSY
A procedure by which a sample is taken of the
endometrial lining of the uterus, shows evidence of ovulation and
degree of maturation of the uterine lining, and can reveal uterine
cancer, uterine fibroids, uterine polyps, and adenomyosis. This
test also reveals if the woman has a luteal phase defect - a hormonal
imbalance which prevents a woman from sustaining a pregnancy because
not enough progesterone is produced. The test is typically performed
1-3 days before onset of woman's menstrual flow.
HYSTEROSCOPY
This is a procedure that involves insertion
of a narrow telescope-like instrument through the vagina and cervix
into the cavity of the uterus (endometrial cavity). The uterine
cavity is then distended with fluid and visualized. This procedure
allows us to determine whether there are any defects such as fibroid
tumors, polyps, scar tissue, a uterine septum, or other uterine
problems inside the cavity.
LAPAROSCOPY
About 40% of infertile women whose initial Fertility work-up
is unrevealing will demonstrate abnormal tubal or uterine findings
on a laparoscopic examination. Laparoscopy requires two small incisions
(one at the navel and one above the pubic bone). Carbon dioxide
gas is injected into the abdomen, distending it and pushing the
bowel away. The laparoscope, a hollow tube equipped with a tiny
camera, lenses, and a fiberoptic light source, is inserted through
the umbilical incision. A probe is then inserted through the second
incision allowing the physician to directly view the outside surface
of the uterus, fallopian tubes, and ovaries. Endometriosis, pelvic
scar tissue, and blockage at the ends of the fallopian tubes can
all be identified using laparoscopy. Some of these conditions can
be corrected during the procedure by cutting away any scar tissue
that may be binding organs together or by destroying endometrial
implants. The procedure is usually done under general anesthetic
and the wound itself is minimally painful.
MICROLAPAROSCOPY
A new minimally invasive diagnostic surgical
procedure uses telescopes and instruments that are much smaller
than normal. If this procedure is appropriate for your condition,
smaller incisions will be made and postoperative abdominal tenderness
may be reduced.
GENERAL INFERTILITY TREATMENTS
Artificial Insemination (AI):
Places sperm directly in the cervix (called
intracervical insemination). Artificial Insemination is useful for
women who have structural problems, when the cervical mucus is unreceptive,
when donor sperm are required, when the male partner's semen contains
very low numbers of sperm, or when unexplained Infertility exists
in both partners.
In order to prepare for AI, a woman usually takes
Fertility drugs in advance. The man must produce sperm at the time
the woman is ovulating. The sperm are then "washed", using
high-tech laboratory procedures and are then inserted into the uterine
cavity through a long, thin catheter. To reduce the risk of multiple
births, the amount of the drug and the response to it is carefully
monitored with several ultrasounds and blood tests for estrogen
levels.
Intrauterine Insemination (IUI):
Involves placement of sperm following separation
from seminal fluid into uterine cavity.
Microscopic Tubal Reconstructive Surgery
Treatment for reversal of tubal ligation or
tubal obstruction. Tubal ligation reversal (reanastomosis) is a
surgical procedure, which can restore the function of fallopian
tubes, which have been blocked by a previous sterilization operation.
Reversal operations are performed using microsurgical techniques,
in which microscopes or loupes are used to visualize and bring together
the very narrow hollow center portion of the fallopian tubes. Microsurgery
also uses very thin suture materials, the smallest possible incisions,
specially designed instruments and non-traumatic tissue handling
techniques. Patients go home the same day
Ovulation Stimulation
Treatment for women who do not ovulate. This
treatment requires the use of ovulation-inducing drugs such as Clomiphene,
Humegon, Pergonal, Metrodin, or Gonadotropin Releasing Hormone (GnRH).
Monitoring involves follicular sonograms and serum hormonal tests.
Advanced Laparoscopic Surgery
Treatment for tubal obstruction, pelvic endometriosis
and/or adhesions; ovarian cysts, ectopic pregnancy. Involves a small
surgical incision through the naval.
Advanced Hysteroscopic Surgery
Treatment for intrauterine insemination adhesions,
polyps, fibroids, and uterine septum; tubal catherization for tubal
obstruction. Involves the insertion of a small scope through the
vagina and cervix.
ASSISTED REPRODUCTIVE TECHNOLOGY (ART) PROCEDURES
Assisted Reproductive Technologies (ART)
Assisted Reproductive Technologies or ART,
include several different techniques or procedures now available
to help couples achieve fertility after other surgical and hormonal
methods have failed. These procedures employ techniques that retrieve
eggs from the ovary and re-implant them. Fertilization may occur
either in the laboratory or in the uterus. For many couples, ART
offers the best hope of achieving pregnancy. Following is a description
of each of these procedures and how they work:
In Vitro Fertilization (IVF)
In Vitro Fertilization is probably the best
known and most widely used ART procedure. For well over a decade,
IVF has allowed infertile couples the chance to conceive and bear
children. . The best candidates for IVF are women with damaged fallopian
tubes.
IVF is a four-stage procedure. The beginning of
this process involves ovarian stimulation to produce several mature
eggs that can be harvested from the ovary before they have been
released from the follicles, and the monitoring and collection of
eggs. Multiple eggs are removed from the woman and placed in a special
medium for two to three hours. The male semen is processed, using
different techniques to obtain a vigorous motile sperm. The prepared
sperm is then introduced into the medium containing the egg(s).
Many of these eggs will fertilize and develop
into embryos, which are then transferred back into the woman's uterus
through a simple procedure that requires no anesthesia. In most
cases, egg recovery is preceded by a period during which the woman
receives daily hormone medications to stimulate the growth of multiple
eggs. In some instances, however, it may be possible to accomplish
IVF without the use of these ovulation induction medications.
Gamete Intra-Fallope Transfer (GIFT)
GIFT is an ART procedure developed to assist
women, particularly those who have normal fallopian tubes, but there
is unexplained infertility. In these cases it can be difficult to
determine if the sperm and egg ever meet, so this procedure allows
for a site where fertilization is most likely to occur.
This technique is similar to IVF with the
exception that the harvested eggs are not fertilized. The eggs are
mixed with the washed and capacitated sperm and immediately placed
directly into the woman's fallopian tubes through a laparoscope
(a long thin catheter), thus the sperm and egg are placed exactly
where they would be in natural fertilization. Fertilization then
occurs in the woman's fallopian tubes, after which they move down
into the uterus for implantation according to a "normal"
timetable.
Zygote Intra-Fallope Transfer (ZIFT)
This procedure is a combination of IVF and
GIFT. The eggs are fertilized with washed and capacitated sperm
in the laboratory as in the IVF procedure, but then the beginning-stage
embryos are placed directly into the patient's fallopian tubes as
in the GIFT procedure. This blending of IVF and GIFT technique offers
the advantage of confirming that fertilization has occurred and
the eggs can be examined for defects before implantation. This procedure
also provides the natural environment of the fallopian tubes for
the very early conceptus.
Donor Oocyte Program (DOP)
Age, is the most important determinant when
a woman uses her own eggs. Rates for ART are relatively high for
both pregnancies and live births among women in their 20's but they
decline after 30 and go sharply downward toward the end of the decade
and afterward. The patients who can most benefit from oocyte donation
are those who lack ovarian function.
The use of donor eggs has made it possible
for many older women, (Success rates using donor oocyte's depend
on the age of the donor, not the age of the recipient.) This procedure
provides healthy eggs from either a known or anonymous donor to
women who are unable to utilize their own eggs to achieve pregnancy.
Fertilization can be with the sperm of the recipient's husband to
the fallopian tubes of the recipient (GIFT), or the eggs can be
fertilized In Vitro with the resulting embryos transferred to the
recipient's uterus (IVF) or to her fallopian tubes (ZIFT).
Embryo Cryopreservation
In cases where more eggs develop into embryos
than are going to be transferred to the patient, the couple will
have the option of cryopreservation, or freezing, of the embryos
for transfer into the woman's uterus at a later date.
Cryopreservation is used to minimize the risk of
multiple births, which increases dramatically if more than four
or five embryos are replaced. Once embryos are frozen in liquid
nitrogen and stored, viability will remain unchanged for long periods.
With current freezing and storage methods, 60 to 80 percent of embryos
will be viable after thawing. One of the advantages of embryo cryopreservation
is that transfer of the thawed embryo may occur in a natural ovulatory
cycle.
Intracytoplasmic Sperm Injection (ICSI)
Intracytoplasmic sperm injection (ICSI) is
a highly sophisticated technique for injecting one single sperm
into an egg using microscopic and micromanipulation instruments.
In men with low sperm count, low motility or a high number of abnormal
sperm, this technique has proven to be a highly successful remedy.
Combined with IVF or ZIFT, the procedure of ICSI is able to achieve
a high rate of fertilization and normal embryo development. ICSI
has even been successful in cases where sperm must be taken directly
from the testes (testicular biopsy) due to the absense of sperm
in the ejaculate or a previous vasectomy. ICSI is also the best
choice when other andrology tests identify a possible problem with
sperm function.
Assisted Hatching
This is a procedure of making a tiny hole
in the membrane surrounding the embryo before implanting to assist
it in attaching to the uterus. This thinning the membrane of the
fertilized egg may increase implantation rates in eggs from certain
women, such as those over age 40.
Blastocyst Transfer
This is a procedure that allows a longer time
for the embryo to develop in the laboratory (five days instead of
two to three). This enables the embryo to reach the blastocyst stage,
which is the natural embryonic stage for implantation in the uterus.
Many couples undergoing In Vitro Fertilization accept
the risk of multiple gestation as an integral part of the treatment
process. They want to maximize their chances of achieving a pregnancy
and will transfer three or more embryos to achieve their goal. After
all, the chance of taking home a baby is not 100%, and the cost
of an IVF cycle can be quite significant. Sometimes, the financial
resources of a particular couple may only allow them to undergo
an IVF cycle once in their lifetime. The end result of transferring
3 or more embryos has been a significant increase in the rate of
triplet and higher order multiple pregnancies. There are enormous
medical, social, and financial consequences of this increase in
multiple birth rate.
One solution to this problem may be to culture the
embryos for 5 or 6 days, to the blastocyst stage. Embryos developing
to the blastocyst stage (blastocysts), have a higher implantation
rate than embryos grown only three days, and are more likely to
succeed in initiating a pregnancy. As result, only two blastocysts
need to be transferred to have the same pregnancy rate usually seen
when 3 or more embryos that have been grown for only 2 or 3 days
are transferred into the uterus. In other words, fewer embryos are
needed to achieve the same or higher pregnancy rate, resulting in
a lower incidence of multiple gestation.
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