In-vitro Fertilization (IVF)
IVF is a process by which eggs are recovered
from the ovary , fertilized in the laboratory
and transferred into the uterus 3 - 5 days later
as cleaving embryos or blastocysts.
Ovulation induction was performed to stimulate
the ovaries to produce several eggs for IVF in
order to increase the chance of conception. Once
more than three follicles have ripened , the
female partner will be given an injection of hCG
which will trigger the final maturation process
of the eggs. The egg recovery will be performed
36 hours after hCG administration and on that
day the husband will be required to produce
semen samples. The eggs are recovered from the
follicles using ultrasound- guided technique.
The oocytes are carefully identified and washed
before being placed in incubator. After a period
of time , usually 3 - 4 hours, they are
inseminated with the specially prepared sperm.
The oocytes and sperm are cultured together and
inspected on the following day to see if
fertilization has occurred. The first signs of
fertilization , are shown by the presence of two
small dots within the egg , the pronuclei. If
this has occurred , the zygote ( a fertilized
egg ) may then divided into two , four or more -
When the eggs have fertilized and cleaved , no
more than three embryos will be transferred into
the women on day 3 or day 5 after egg
collection. Husbands are encouraged to accompany
their wives during this special time , but only
they wish to do so. The couple will be shown the
embryos before the transfer takes place and the
embryos' picture will also be given. If there
are more than three good quality embryos , the
extra embryos can be frozen for future attempts.
In reality, there are a number of factors that
have to be taken into consideration to analyze
the success or the failure of any IVF treatment.
Possible reasons why a particular cycle
treatment may fail include:
- Patientís age
- Sperm and egg quality
- Failure to collect eggs
- Failure of implantation of the embryos
On an average, there is a 20% to 30% success
rate associated with IVF.
In general women above 40 find it a little more
difficult to conceive using IVF as the ovulation
rate as well as quality of eggs decreases with
age. Those who have had a normal delivery before
or successful IVF births earlier have a greater
chance of getting pregnant the second time over.
The IVF centre where the treatment is done also
influences the success rate. Factors like size
of the clinic, technical expertise of the team,
type of equipments used, protocols for ovary
stimulation, and transferring of embryos play an
important role in inferring the overall success
rate. At Bangkok IVF center we have an above
average success rate since our inception in
You may check our Statistics here.