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What is IVF?
In Vitro Fertilization
technically mean "fertilization outside of the body."
While considered an experimental procedure for years,
IVF has been a proven way for many couples to build
their family. .
The IVF program is made up
of four steps:
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1) Use of fertility
medications to develop oocytes or "eggs."
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2) Collection of the
oocytes (eggs).
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3) In Vitro
Fertilization of the egg and growth of the embryo.
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4) Replacement of the
embryo back into the uterus.
Developing and Monitoring
Follicles
To assist in follicle
growth, you will be started on a program of medication.
These medications shut off pituitary stimulation to the
ovaries. By shutting down the pituitary, the ovaries are
isolated so that oocyte (egg) development is stimulated
by medication alone. These medications are used together
to help stimulate multiple follicles so that, at the
time of egg retrieval, several eggs can be collected.
This increases the number of eggs that have an
opportunity to fertilize and develop into embryos.
After starting these
medications, you will be monitored for follicle growth
with both transvaginal ultrasounds and a blood test for
estradiol (E2.) The size of the follicles and amount of
E2 present tells if the follicles have reached optimal
maturity. This may require 8-12 days of treatment, with
several ultrasounds and blood tests. When the follicles
are mature, you will receive an injection of human
chorionic gonatotropin (hCG) to begin the final
maturation of the eggs. Eggs are collected 36 hours
after the medication is given.
Collection of the Eggs
Mature eggs will be
collected by ultrasound-directed needle aspiration.
Follicles are located by ultrasound and then a needle is
guided through the top of the vagina into the ovary to
aspirate the eggs from the follicles.
Fertilization of the Egg and
Growth of the Embryo
Once the eggs are retrieved,
they are transported to the in-house Assisted
Reproduction Technology (ART) laboratory where they are
placed in a special culture medium (fluid) and allowed
to remain there for approximately 2-3 hours. A semen
specimen collected by masturbation is given to the lab
within one hour of collection on the morning of your
procedure. You must abstain from intercourse for 2 days
prior to the IVF procedure. This ensures optimal sperm
quality. The sperm are prepared and a small number of
active sperm are placed in the medium with each egg. If
Intracytoplasmic Sperm Injection (ICSI) is to be done,
it will be performed approximately 4 hours after the
oocyte retrieval.
The eggs will be examined
for the first time approximately 18 hours after the time
of insemination to determine if they have fertilized.
You will be informed about the outcome of fertilization
the day after your retrieval. If fertilized, the eggs
will be kept in the incubator for an additional day or
possibly two for further development before they are
transferred to your uterus.
Embryo Transfer
All of the eggs you produce
will be collected. In consultation with your physician,
you will decide the number of embryos to be transferred
back to you. The risk of multiple pregnancy must be
considered carefully in this decision. You will need to
decide before the IVF procedure what will be done with
the remainder of the embryos. Your choices include the
following:
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1) discarding the extra
eggs before fertilization
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2) freezing extra
embryos for future pregnancy attempts for yourself
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3) donating the
unfertilized eggs to another infertile couple.
Information regarding these
choices is included in the packet of information you
will receive from the IVF team. It is critical that you
make your decision known regarding the disposition of
any extra eggs and/or embryos before the cycle begins.
The embryo replacement
procedure is very simple and requires no anesthesia. The
embryos are picked up into a very fine catheter, which
is inserted into the uterus through the cervix, and the
embryo(s) are placed into the uterine cavity. You will
need to stay in a reclining head down position for
approximately 2 hours after the embryo(s) have been
placed in your uterus. Activities after embryo
replacement should be minimal for the first 72 hours.
After that, you may resume your normal activities,
albeit no sports activities and no intercourse until
your pregnancy test results are known. You will receive
progesterone injections until pregnancy test results are
known. progesterone is given to assist successful embryo
implantation. If you are pregnant, further instructions
related to activity level and progesterone
supplementation will be given.
Risks
You will be taking strong
medications to stimulate egg production. While these
medications have been proven safe to use, there are some
possible side effects of which you need to know.
These side effects may
include:
- Ovarian
Hyperstimulation - the ovaries become too stimulated
and can become very large with cysts. In severe
cases, fluid collects in the abdomen and lungs,
blood clotting problems may occur, fluid and
electrolyte imbalances can occur and rarely,
life-threatening complications may ensue. Deaths
have occurred with severe hyperstimulation syndrome
(OHSS.) Your procedure may be canceled if the risk
for hyperstimulation is high. Ovarian
hyperstimulation may require hospitalization. Severe
hyperstimulation occurs in less than 1% of cases.
- Ovarian Torsion -
the ovary twists around its blood supply causing
blood flow to be shut off; this is rare (less than
1% of all assisted reproduction procedures), but if
it occurs, it may require removal of the affected
ovary.
- Multiple Gestation -
multiple gestations (twins, triplets, quadruplets)
are more common with this procedure, occurring about
25% of the time. Most of these multiple gestations
are twins. As with any multiple gestation, there is
an increased chance of preterm birth. Some of the
major problems associated with preterm birth may
include respiratory distress, brain hemorrhage, and
nervous system problems such as blindness and
cerebral palsy. It is your decision in consult with
your physician as to how many embryos are returned
to the uterus. If a multiple pregnancy does happen,
the option of selective fetal reduction (aborting
some of the fetuses while still carrying some) is
available.
- Egg
Retrieval/Laparoscopy Risks - if you have a
transvaginal egg retrieval, laparoscopic egg
retrieval or embryo transfer, the risks are very low
(about 3 in 1,000) and may include: injury to the
intestines, blood vessels, and bladder (if this does
occur, it would be repaired during surgery, but
would require a larger incision), infection and
bleeding. In the unlikely event of physical injury
resulting from your participation in this procedure,
it is important to understand that the costs of such
treatment will be at your own expense and that
financial compensation from your insurance carrier
may not be available.
- Ectopic Pregnancy -
the risk of ectopic (tubal) pregnancy is slightly
higher than in natural pregnancy, approximately 5%
(5 out of 100.)
- Ultrasound -
ultrasound has been used in obstetrics and
gynecology for many years with no cases of fetal
abnormalities or maternal complications directly
related to its use.
Benefits
It is hoped that your IVF
procedure will increase your chance of pregnancy.
Alternatives
Alternative treatments,
including other assisted reproductive procedures (Gamate
Intrafallopian Transfer - GIFT; Zygote Intrafallopian
Transfer - ZIFT), ovulation stimulation with
intrauterine insemination (IUI), no treatment, and
adoption are available.
Recovery Time
The expected recovery time
for IVF is 72 hours of minimal activity.
Signing of Consent Form
The consent form set forth
must be executed before you begin your first IVF
treatment. Your join consent will be binding in the
future, even though your personal circumstances may
change. |