Frequently Asked Questions
# Who are the best couples for I.V.F.
treatment ?
1-Couples with unexplained failure of conception
2-Patients with blocked tubes (the sperm cannot reach the oocytes
to fertilize them)
3-Patients with poor semen analysis.
4-Patients with severe polycystic ovarian syndrome and
dysfunctional ovulation
5-Patients with endometriosis
6-Patients with anti-sperm antibodies (both male and female)
# What is In Vitro Fertilization (I.V.F)?
Literally it means fertilization in a glass test-tube. It is
laboratory assisted fertilization of the mature oocytes with
sperms (after activation of the sperm in the laboratory). Once
fertilised, the resultant embryos
are transferred to the mother. The laboratory stage of the
treatment takes 3-5 days. The chances of a pregnancy in a cycle
of treatment are enhanced because more
than one embryo can be transferred to the uterus of the mother.
# When should a couple consult a fertility specialist ?
Pregnancy is a natural phenomenon. It can take healthy couples
up to 1 year to conceive a child. The
age of the wife is very important to determining the urgency of seeking
specialist treatment. If the wife is between 20 –29 years, she
can wait a whole year, but if she is between 35 – 39 years, it
is better to consult a specialist after 6 months, because
women have greater difficulty achieving conception with
advancing years.
# What is the treatment and what does it involve?
IVF treatment has minimal discomfort and few complications. It
has a relatively high success rate.
If the cause of the infertility is male factor (poor
semen analysis), and the wife is young and healthy, the success
rate with IVF is very high. On the other hand, if the wife is
older, overweight, with irregular periods and endometriosis, the
success rate with IVF is lower.
Deciding on the best management of the problem is
based on doing blood tests on the wife, giving her medications
to stimulate her ovaries to produce eggs, and then collecting
the eggs via a vaginal approach. Routine egg collection takes
15-30 minutes, and does not involve any major surgery. The mother
can go home immediately afterwards, as long as there is someone
at home to stay with her.
The eggs are fertilised with the
husband’s sperm in the laboratory, and the resultant embryos
are put in complex incubators to complete the fertilization
process to a stage where the embryos are ready to be returned to
the mother's uterus.
Embryo transfer takes 5 - 10 minutes, and is done through the
cervix (again via the vagina). The mother can go home
immediately afterwards.
# What is the best time for embryo transfer?
This varies from case to case, depending on the cause of
infertility. Sometimes embryo transfer is done after 24 hours,
and sometimes after 3 to 5 days. But in the majority of cases,
it is done after 48 hours.
# How can you choose the embryos for transfer?
The best embryos are chosen on the observation that the
embryonic cells are dividing at an appropriate rate. The success rate
is highest when first class embryos are transferred in a young
mother (20 –30 years). Recently,
aneuploidy screening allows selection of embryos with normal
chromosomes. This new technique relies on removing a sample from
the dividing embryo for genetic screening and analysis. It has
doubled the success rate of IVF in certain cases.
#What are the different types of In Vitro Fertilization
treatment?
There are 2 types:
1-STANDARD IN VITRO FERTILIZATION:
This involves stimulating the ovary, collecting the oocytes,
fertilization of the oocytes with activated semen, and then
transfer of the embryos back to the mother.
2-INTRACYTOPLASMIC SPERM INJECTION (ICSI):
This is the most modern technique for the treatment of
infertility, particularly for couples where there is male factor
infertility. With this procedure, the embryologist identifies
the collected eggs and injects a single sperm into each egg
directly with the sharp tip of a micropipette (7 times smaller
than a hair) using a microscope.
This technique is particularly appropriate for:
1-Patients with very poor semen analysis
2-Couples who have had failure with Standard I.V.F. treatment
3-Patients with no sperm in the ejaculate, but who do have sperm
in the testes. In these cases, the sperm are aspirated from the
epididymis or extracted directly from the testes prior to ICSI
treatment. For these patients, ICSI is very successful.
# Can we choose the sex of the baby?
PGD (Preimplantation Genetic Diagnosis) has become a powerful
tool in assisted reproductive technology. It is the procedure by
which the sex of the baby can be selected. It is
possible to correctly identify male and female embryos in
95% of cases. One cell is removed from the embryo after the 3rd
day (before transfer of the embryo into the uterus); this cell
is genetically analysed so that the nucleus is classified as
carrying either XX (female) or XY (male) chromosomes. Once
identified and separated, only embryos of the desired sex (male
or female) are returned to the mother.
Sex selection by couples is only allowed in the UAE under
certain strict situations, including management of hereditary
diseases, and gender balance in families.
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