from
the book How to Have a Baby: Overcoming Infertility
by Dr. Aniruddha Malpani, MD and Dr. Anjali Malpani,
MD.
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Test Tube Babies - IVF & GIFT (Page 7)
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- Preimplantation Genetic Diagnosis – The Newest ART
Table of Contents
What
is OHSS ( ovarian hyperstimulation syndrome) ?
What
about the risk of a multiple pregnancy after IVF ?
What
about the dangers of overtreatment and
undertreatment ?
What
questions should you ask when selecting an IVF
clinic ?
Many couples are still worried that babies born after
IVF are abnormal or weak. You need to remember that
in one sense there is nothing "artificial" about these
babies - they aren’t synthetic babies which are being
manufactured in the laboratory ! Remember that IVF is
a form of assisted reproductive technology, where technology
is being used to assist Nature to accomplish what it
has failed to do for the infertile couple ! Over a hundred
thousand babies have now been born after IVF treatment,
and the risk for birth defects is not increased after
IVF treatment.
What is OHSS
( ovarian hyperstimulation syndrome) ?
The most worrisome complication of IVF
is that of ovarian hyperstimulation syndrome ( OHSS),
because of superovulation. The cause of "hyperstimulation
syndrome" is that superovulated ovaries contain many
follicles which are loaded with estrogen. After ovulation,
a huge amount of estrogen-rich fluid is poured directly
out of the enlarged and fragile ovaries into the abdominal
cavity. This fluid also contains chemicals like kallikrein-kinin
and VEGF
( vascular endothelial growth factor), which then coat
the lining of the abdominal cavity ( called the peritoneum)
and cause it to become very permeable ( leaky) .
Fluid (serum) literally pours out of
your bloodstream into the peritoneal cavity because
of the "leakiness" of the abdominal cavity’s lining.
The ovaries balloon in size, your abdomen swells, you
get lightheaded with relatively low blood pressure,
and you may get dizzy because of the decreased blood
volume. Many women will have mild degrees of hyperstimulation
syndrome with a little bit of lower abdominal swelling,
discomfort, and dizziness. This does not require hospitalization,
just bed rest at home. It is only the rare, severe cases
that require hospitalization.
The occasional patient today who develops
severe hyperstimulation must go into the hospital, have
intravenous fluids for several days, and wait for her
ovaries to reduce in size and for her body to readjust.
Some patients may even need to be admitted into an intensive
care unit for monitoring and observation, since this
can be life-threatening.
At one time this was a very dangerous
condition only because it was not fully understood.
We now know that by putting a small "paracentesis" catheter
into the abdomen and draining all of this fluid, the
patient is made much more comfortable, she can breathe
more easily, and by getting rid of this estrogen irritation,
fluid leakage into the abdomen slows down dramatically.
Thus, even in the very rare cases of severe hyperstimulation
syndrome, knowledgeable treatment makes the likelihood
of any dangerous outcome very remote.
In our clinic, we prevent OHSS by carefully
aspirating each and every follicle at the time of egg
retrieval , and flushing it repeatedly with a double-lumen
needle, until it collapses completely. By removing the
follicular cells which are responsible for producing
VEGF and causing OHSS, we have been able to prevent
OHSS very successfully in our clinic by using this novel
technique.
Interestingly, the worst cases of hyperstimulation
syndrome occur when a woman becomes pregnant. This is
because her placenta is making HCG and stimulating the
ovaries to continue to pour out large amounts of estrogen-rich
fluid. So although it is a very unpleasant side effect
to endure, hyperstimulation syndrome often means good
news.
If you grow too many follicles ( more
than 25) , or if your estradiol level is very high,
the doctor may be forced to cancel the IVF cycle, because
of the high risk you run of developing ovarian hyperstimulation
syndrome. In some clinics, doctors can salvage this
cycle by collecting all the eggs and freezing all the
embryos. Since the embryos are not transferred, the
risk of hyperstimulation is reduced; and the frozen
embryos can then be transferred in a future cycle.
Complications can also occur during
the egg harvest procedure. The removal of eggs through
an aspirating needle entails a slight risk of bleeding,
infection, and damage to the bowel, bladder, or a blood
vessel.
What
about the risk of a multiple pregnancy after IVF ?
In all techniques of assisted reproductive
technology, the chance of multiple pregnancy is increased
when more than one embryo or egg is transferred. Although
some would consider having twins to be a happy result,
there are many problems associated with multiple pregnancy,
and problems become progressively more severe and common
with triplets and each additional fetus thereafter.
Women carrying a multiple pregnancy may need to spend
weeks or even months in bed or in the hospital. There
may be enormous bills for the prolonged and intensive
care for premature babies. There is also a greater risk
of late miscarriages or premature delivery in multiple
pregnancies.
A recent treatment option for women
with multiple pregnancies is that of selective fetal
reduction, in which one or more of the fetuses is selectively
destroyed ( usually by injecting the toxic chemical,
potassium chloride , into its heart under ultrasound
guidance). In most cases, the killed fetus is then reabsorbed
by the body - and the other fetuses continue to grow.
Of course, the risk of all the fetuses being lost because
of a miscarriage ( as a result of inadvertent trauma
during the procedure ) is also present, and is about
10% in experienced hands.
There is approximately a five percent
chance of an ectopic pregnancy with IVF and GIFT. This
is not because of the procedure, but rather because
women going through IVF already have damaged tubes,
which predisposes them to having an ectopic.
IVF is physically demanding - and stressful
! The effects of blood tests, anesthetic and operation
are tough on your body. Hormone stimulation causes lethargy
and fatigue, not withstanding the sometimes extensive
travelling required each day. Some people find treatment
conflicts with their employment or other commitments.
A final risk is not physical, but psychological.
The major risk for most patients is that even after
spending all the time, money and energy required for
a treatment cycle, they will not get pregnant. Couples
undergoing IVF and GIFT have described the experience
as an emotional roller coaster. The treatments are lengthy,
involved, and costly. These procedures often create
high expectations but are more likely to fail than to
succeed in a given cycle. The unsuccessful couples will
feel frustrated in their quest for pregnancy. It is
common to feel angry , isolated, and resentful toward
both the spouse and the medical team. At times, this
feeling of frustration leads to depression and feelings
of low self-esteem. The support of friends and family
members is very important at this time.
What
about the dangers of overtreatment and
undertreatment ?
IVF techniques have now become well established, and
most towns in India have one or more IVF clinics today.
This is all for the best, because infertile couples
no longer need to travel long distances for IVF treatment.
However, because offering IVF has become a fashionable
trend, there are now too many IVF clinics in competition
with each other. Many of these clinics are poorly equipped,
and the staff inadequately trained, with the results
that pregnancy rates are poor. Many clinics have started,
and then closed down in a few months, without being
able to achieve even a single pregnancy - dashing many
patient’s hopes in the process. Unfortunately, this
often means that all IVF clinics start getting a bad
reputation. In order to protect yourself, it’s a good
idea to ask the clinic staff to actually show you the
embryos under the microscope. Most good clinics do this
routinely, and some even offer video records. Not only
is this reassuring for the patient, it also helps them
to "bond" with the embryos !
Another danger of too many IVF clinics
is the risk of overtreatment. In order to remain profitable,
many clinics now offer IVF to infertile couples as a
treatment of first choice ( rather than reserving it
for patients who truly need it). While this does help
them to keep their financial bottomline healthy and
to increase their pregnancy rates ( since many of these
patients are young couples, who never needed IVF in
the first place !) , it is an inappropriate use of limited
medical resources. IVF treatment should be reserved
only for patients who really need it. Paradoxically,
while rich patients end up getting IVF even when they
don’t need it, poor patients are often deprived of this
treatment even though they need it, because of the expense
involved. Unfortunately, the Government still does not
consider that providing infertility treatment should
be a part of its family planning program. Hopefully,
this will change in the future, and providing infertility
services will be seen to be a part of comprehensive
reproductive care services. This will provide many more
infertile couples access to assisted reproductive technology.
You may not be able to comfort each other enough at
times of disappointment, especially when you are both
upset. If you don't have a family or a friend who can
provide support (without pressure), then the positive
and sensitive assistance offered by a support group
may be very suitable, either in the short term or longer.
Yet other people may seek the more specialized assistance
of a counselor, who is either attached to the clinic
or based in the community.
Going through an IVF cycle can be very
stressful, and you need to be prepared for the ups and
downs. Many clinics have found that optimistic and well-prepared
patients do have better pregnancy rates, and counselling
and emotional support can be very helpful in improving
your chances of getting pregnant !
Every time you start a cycle, you have
to hope for the best and be prepared for the worst.
It literally is like gambling - and hoping that you
hit the jackpot ! Many patients find the first cycle
the most stressful - and find it much easier to do a
second cycle, because they are more in control and understand
much better what they are going through.
If you judge the outcome of an IVF cycle
only on the basis of whether or not you get pregnant,
then with the limitations of today’s technology, you
are more likely to be disappointed than otherwise. However,
do remember that each cycle also provides you with valuable
information, such as whether the sperm fertilise the
egg or not, so that you can plan your future course
of treatment. Going through an IVF cycle can also give
you peace of mind that you tried your best !
There are now over 300 IVF clinics in
India, so how do you go about selecting the best ? This
can be difficult and confusing, but remember that when
selecting an IVF program, information is crucial. Important
points for consideration include the qualifications
and experience of personnel, types of patients being
treated, support services available, cost, convenience,
and rate of successful pregnancies. Older programs have
established live birth rates based on years of experience.
Although new programs won't have as much experience
and may still be determining their live birth rates,
their personnel may be equally qualified.
The range of services offered by an
IVF program should be carefully considered. Not all
programs are equipped to provide all services, such
as tubal transfer, ZIFT ( ZIFT Video ) , sperm
donors , ICSI and cryopreservation of embryos. It is
best to select a full-service clinic, which offers all
the possible treatment options, so that the one which
is best for you can be used.
The above considerations and answers
to the following questions, which may be asked of the
program, will help you make an informed decision when
choosing an IVF/GIFT program.
What
questions should you ask when selecting an IVF
clinic ?
- How much does the entire procedure
cost, including drugs per treatment cycle?
- Do we pay in advance? How much?
- What are the modes of payment?
- How much do we pay if my treatment
cycle is cancelled before egg recovery? Before embryo
replacement?
- What are the costs for embryo freezing,
storage, and transfer?
- How will the treatment schedule affect
our commitments at work?
- If I must have lodging, is there
a low cost place for me to stay? Do you help arrange
this?
- If I do not get pregnant, when do
I make my next appointment for further evaluatuation
and counseling ?
- How many doctors will be involved
in my treatment?
- To what degree can my own doctor
participate in my treatment?
- What types of counselling and support
services are available?
- Whom do I call day or night if I
have a problem?
- Do you freeze embryos (cryopreservation)?
- Is donor sperm available in your
program? Donor eggs?
- Do you have an age limit?
- When did this program perform its
first IVF procedure? First GIFT procedure?
- How many babies have been born from
this program's IVF efforts? GIFT efforts?
- In the past two years, how many treatment
cycle have been initiated for IVF? For GIFT?
- How many deliveries were twins or
other multiple births?
If you are going through an IVF cycle,
you will find the following tracking chart very useful
in monitoring your treatment.
Click here for a printable chart
Next page: PGD
- Preimplantation Genetic Diagnosis – The Newest ART
Previous page:
Test Tube Babies - IVF & GIFT (Page 7)
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