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In 1978, Louise Brown made headlines as the world’s first
test-tube baby, this event marked the beginning of the
modern age of reproductive medicine. There has been an
estimated one million children born through artificial
reproductive technologies. In 2004, an expected 200,000
children will be born from In Vitro Fertilization. IVF is probably the most well known of the "Assisted
Reproductive Technologies," and has helped infertile couples
conceive and bear children for over two decades. It was
originally developed to help couples overcome tubal factor
infertility, but has become useful in treating other
factors, such as immunological problems, unexplained
infertility and male factor infertility. There are now treatments for virtually any reproductive
problem from the most severe sperm problems to the use of
donor oocytes to combat the effects of maternal aging. IVF
is basically a five step process:
- Pituitary Suppression - Patients involved in our IVF
program should expect to begin using a birth control pill on
menstrual cycle day 3-6 prior to their IVF cycle. A GnRH
agonist medication, such as Synarel nasal spray, will
overlap the birth control pill for the last four days. The
combination of the birth control pill and GnRH agonists,
such as Synarel, help prevent the pituitary gland from
interfering with the Follicle Stimulating Hormone (FSH) used
to stimulate your ovaries.
- Ovarian Follicular Development - You will begin
medication such as Repronex, Follistim or Gonal-F (Follicle
Stimulating Hormones or FSH) to stimulate your ovaries.
These medications allow for more that one egg to develop and
improve chances for multiple oocytes to fertilize and
develop. FSH will be used for approximately 8 – 10 days
depending upon how quickly ovarian stimulation progresses.
These medications have been used for many years and present
no increased risk of birth defects with their use.
Follicular and uterine lining development is monitored by
ultrasound. When it is determined that the follicles and the
uterine lining are appropriately mature, a trigger shot of
Human Chorionic Gonadotropin (hCG) is then administered.
- Sonographic Aspiration of the Eggs – Approximately 34
hours after the trigger shot, the eggs are retrieved by an
ultrasound-guided-needle aspiration, an in-office procedure
under conscious sedation anesthesia, administered by an
anesthesiologist. The physician places the ultrasound probe
into the vagina and guides the aspirating needle through the
vaginal wall into follicles in the ovary by watching the
ultrasound image of the needle and follicles on a viewing
screen. Fluid is aspirated from the follicles and is
inspected microscopically for the presence of an egg.
- Fertilization and development of the pre-embryos
- Once
the eggs are received in the laboratory, they will be placed
in special fluid media and be allowed to remain there for
approximately 4 to 6 hours. During that time, the semen
specimen will be washed, incubated and placed in with the egg(s) and left for approximately 16 hours. The egg(s) will
then be examined for evidence of fertilization, removed and
passed into a special growth media. Normally developed
embryos will be transferred back into the uterus 48-72 hours
after retrieval.
- Transfer of the pre-embryos back into the uterus
- You
will be positioned on the procedure table in our office as
though you were going to have a pelvic exam. There will be
no anesthetic required. A very fine catheter will be placed
through the cervix into the uterus and the embryo(s) will be
transferred into the uterine cavity. After the transfer, you
will rest for 1 hour. You will need someone to drive you
home (or to your hotel) after the transfer. You should be
off your feet for the first 48 hours then you may slowly
begin light activities until your pregnancy test. Because of
your ovaries being stimulated, your ovaries will be tender
and your pelvis will feel bloated and fully. These symptoms
will gradually diminish but may not completely disappear.
The Odds of Success
Women under age 35 without a male infertility factor
involved have an average 40-50 % (percent) chance of
conceiving and giving birth to a baby using IVF in our
clinic over the past ten years. Success typically increases
with the number of cycles attempted. You can access the
success rates of fertility clinics in the United States
through CDC website (see our success page for more
information). Typical IVF Children
Children born using IVF and other assisted reproductive
technologies are no different from other children that are
conceived naturally. IVF only improves your chances of
conception. The American Fertility Association (AFA) has
created fact sheets to help parents talk to their kids
about ART, which can both be found at the
AFA's website. Merits
Not only has IVF been successful, studies have also
suggested that this procedure and intracytoplasmic sperm
injection (ICSI) (in which one sperm is injected into an egg
in the lab) are safe. A study of nearly 1,000 children
conceived using either IVF or ICSI found that they were as
healthy five years later as those conceived naturally. IVF success rates have continued to improve as the
scientists and doctors improve their understanding of the
IVF process to make it more physiologic. The Future
Medical scientists are striving to boost IVF birth rates
even further by perfecting current methods while developing
new ones. One example is the development of improved
techniques to identify which embryos are of the highest
quality for transfer to a woman's uterus. This process seeks
to not only improve overall success but decrease multiple
birth rates as well. Egg Freezing
Egg freezing is another assisted reproductive technique that
is being developed. The technique has yet to be perfected,
but could be used to help women who want to delay pregnancy
and overcome the age related decline in female conception.
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