Pregnant
- At Last !
from the
book How to Have a Baby: Overcoming Infertility
by Dr. Aniruddha
Malpani, MD and Dr. Anjali Malpani, MD.
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For most
infertile patients, getting pregnant is the ultimate dream which keeps
them going through tests, treatments and surgery. What happens when the
dream finally comes true?
Making
the Diagnosis of Pregnancy
How do you
find out if you are pregnant ? For most treatments, doctors will wait
till you miss your period before starting pregnancy testing. You should
ask your doctor when you should schedule a pregnancy test every time you
take treatment - after all, you never know when it's going to work ! A
reasonable choice would be to conduct the test 16 to 18 days after ovulation.
For IVF and GIFT cycles, in some clinics, testing may start as early as
10 to 12 days after the embryo transfer or GIFT.
When the
pregnancy test is positive, the first response is often one of disbelief
since it's hard to believe you are finally pregnant, especially if you
have been trying for many years. Some patients get emotional - it's over
! The time and effort and money has paid off ! Infertility is a memory
! But you soon realize that it's not all over. What you want is not a
pregnancy but a baby ! There are still uncertainties, and things can still
go wrong, which is why careful monitoring is essential.
A pregnancy
should be documented as early as possible. This is important, because
appropriate care and precautions can then be taken atan early stage .
The most sensitive pregnancy test is a blood test for the presence of
beta HCG (human chorionic gonadotropin) . The HCG is produced by the embryo,
and as the embryo's signal to the mother that pregnancy has occurred.
HCG can be
measured in the blood by RIA (radioimmunoassay) or ELISA (enzyme immunoassay)
testing; and positive levels (more than 10 mIU/ml) in the blood can be
detected as early as 2 days before the period is missed. In the old days,
the only way of determining the presence of HCG was by testing the urine,
i. e, by using urine pregnancy test kits. Modern urine pregnancy kits
(using monoclonal antibody technology ) are now quite sensitive and can
detect a pregnancy as early as 1 to 2 days after missing a period (at
a blood HCG level of about 50 to 100 mIU/ml). The benefit of urine pregnancy
test kits is that they are less expensive; and testing can be done at
home by the patient herself. However, instructions need to be followed
carefully, and errors in interpreting the test results are not uncommon.
These errors could occur if the urine is too dilute; or if the test is
not done properly; or if there is a urinary tract infection exists.
The major
advantage of blood tests is the fact that they measure the actual level
of the HCG in the blood - and this factor can be very helpful in managing
pregnancy problems, if they occur. As the embryo grows rapidly, HCG levels
normally double every 2 to 3 days. Thus, one reliable sign of a healthy
pregnancy is the fact that the HCG levels are increasing rapidly, and
often doctors may need to do 2 HCG levels 3 days apart in order to determine
the viability of the pregnancy. A rising HCG level is reassuring.
Problems
with HCG testing can occur if you have earlier been given HCG (human chorionic
gonadotropin) injections for inducing ovulation. Normally, this exogenous
HCG is excreted by the body in 10 days; but sometimes it can linger on.
This is why, if the HCG level is very low, the test may need to be repeated,
to confirm that the level is increasing.
What are
"biochemical pregnancies" ? These are pregnancies in which the HCG test
is positive after the period has been missed; the levels increase, but
are still low; and no pregnancy is ever documented on ultrasound. Biochemical
pregnancies are often seen after IVF and GIFT. While they are not clinical
pregnancies, they are of useful prognostic information, because they may
mean that your chance of getting pregnant in a future cycle are good.
One drawback
with the HCG test is that a positive HCG simply means a pregnancy is present
in the body - it does not provide any information about the location of
this pregnancy, which may be tubal or ectopic.
During the
very early pregnancy, HCG levels are the only way of monitoring the pregnancy
. HCG levels which do not increase as rapidly as they should may mean
that there is a problem with the pregnancy - the embryo may miscarry because
it is unhealthy; or the pregnancy could be an ectopic pregnancy. Differentiating
between the two conditions is obviously important, and this is where vaginal
ultrasound plays a key role.
With vaginal
ultrasound, it is possible to detect a pregnancy as early as 2 to 4 days
after a missed period. An early pregnancy is observed as a pregnancy sac
or gestational sac in the uterine cavity. The uterine lining is thick
and bright white; and the sac (also called a gestational sac) in the uterine
cavity. The uterine lining is thick and bright white, and the sac appears
as a black bubble in this lining. The sac should grow (at the rate of
about 1 mm per day ) and, if it does so, this is reassuring. The sac represents
only the placental tissue - the embryo is so tiny at this stage, that
it cannot be seen on ultrasound. At 6 weeks of pregnancy, an echo can
be seen within the sac; this is the embryo. This grows rapidly, so that
on scans done by 8 weeks, one should be able to see a beating fetal heart
as well. This is very good evidence of a healthy fetus and the chances
of a problem occurring in pregnancy after this point are small.
Ultrasound
is useful because it provides information about the number of pregnancies
(multiple pregnancies are not uncommon after infertility treatment and
should be looked for !) ; as well as their location. If the sac is not
seen in the uterine cavity, then a tubal pregnancy should be suspected.
The ultrasound provides information which is complementary to that of
the HCG level. Often both need to be done simultaneously and interpreted
together.
What about
do’s and don'ts during pregnancy ? What precautions should you take to
minimise your risks ? Unfortunately, there is little anyone can do today
which is of much use. During pregnancy, most doctors may put you on supplemental
progesterone injections (to help support the endometrium); and perhaps
mutlivitamins; and low-dose aspirin. All this treatment is empiric - there
is no proof that it works ! Also, many patients will put themselves on
bed-rest to prevent disturbing the pregnancy and the value of this is
doubtful as well . If the pregnancy is going to have a problem, no matter
what you do, it will. And if it is going to be uneventful, then you don't
really need medical attention in any case . The trouble is we do not know
which pregnancy is going to have problems and which one is not ! Any bleeding,
no matter how slight , should be taken seriously - and usually calls for
hospitalisation.
Unfortunately,
it is a fact of life that 10 to 20% of all pregnancies will end in a miscarriage
- and the risk of an infertile woman's miscarrying is even higher. This
is because they are often older; their medical problems which caused the
infertility can also cause miscarriage; and sometimes the infertility
treatment also increases this risk. Of course, some of the increased risk
is only apparent, because the testing is so intensive and thorough.
Unfortunately,
no treatment exists for preventing early miscarriages - and all the doctor
(and patient) can do is wait and watch. This can be shattering ! Nevertheless,
the fact that you have got pregnant provides hope for the future.
If the pregnancy
miscarries, then a curettage is needed. This tissue must be sent for histopathologic
examination, to provide documentation of the pregnancy. This also helps
to rule out an ectopic pregnancy.
Coping with
miscarriage after infertility can be hell ! When you finally get pregnant
after so many years of trying, you feel it is cruel on God's part to then
snatch it away. In fact, perhaps the only trauma worse than not being
able to conceive, is to lose a pregnancy after trying so hard. Remember
that nature is not perfect and neither is medical care. The most painstaking
attention to detail cannot stop the unexpected from happening and no amount
of obsession with detail will guarantee a perfect outcome.
If you miscarry,
you are going to blame yourself - that it was something you did (or did
not do ) which caused the miscarriage. However, remember that 70% of miscarriages
are because of a chromosomal abnormality at conception - something over
which you have no control.
We will never
know the reason why they occur. This why most doctors would not investigate
you after just one miscarriage, since the chance of finding something
significantly abnormal is so small - and your chance of having a healthy
pregnancy the next time is better than 85% . Most would reassure you -
and the best option would be to try again (even though this can be emotionally
very taxing !). If you've had a previous miscarriage, it is very normal
to be frightened and worried - and starting infertility treatment again
can be very difficult . You have to start from scratch all over again
- and you wonder if and when you will again get pregnant. The lurking
fear of losing the pregnancy once more, if you do conceive again, could
torment you as well.
Coping with
pregnancy after infertility treatment can be difficult even if the pregnancy
is going well. So much time, energy, love and money have been invested
in the pregnancy, that you don't want to take the slightest chance that
something will go wrong. The anxiety can be overpowering - and even the
minor aches and pains of pregnancy can send you rushing to the doctor
for reassurance that all is well.
Your pregnancy
will be monitored carefully, and this may involve frequent visits to the
doctor; as well as repeated ultrasound scans. You will be very vulnerable
and terrified, and will be bombarded by suggestions from well-meaning
friends and relatives as to what to do, and also what not to do.
If you are
more than 35 years of age, your doctor may advise you have a chorion biopsy
or amniocentesis to screen for genetic defects in the newborn, such as
Down's syndrome. Also, if you have multiple pregnancies, frequent hospitalisation
and bed-rest may be needed.
Yours is
a "premium pregnancy", and will be treated as such even though your risk
for complications is no more than any other woman's. However, since the
pregnancy is so precious , the hazard is greater than for someone has
no trouble conceiving , which is why an "at risk" approach to managing
your pregnancy is appropriate. This is why the chance of your requiring
a cesarean section for birth are greatly increased, because neither you
nor your doctor will want to take the slightest "chance" of something
going wrong.
What about
after the delivery ? Is this when the joy and happiness you have been
anticipating for so long and happiness you have been anticipating for
so long begin? Maybe ! Certainly life is never the same when the child
you have been looking forward to for so long finally arrives, especially
if you have twins ! Babies are demanding and not everyone can adjust adjusts
easily to the new situation. If couples are older then it may be harder
for them to cope with the changes, especially after spending years of
being together without the company of children.
The infertile
woman who becomes pregnant expects perfection in every aspect of motherhood,
because that's the stuff dreams are made of. However, when the reality
of pregnancy, delivery and parenting actually takes hold, you may even
feel disappointed, because real life is often harsher and unkinder than
you had imagined. For example, you may have a hard time coping with 2
a.m. feedings and you may even start to resent your having to get up to
take care of your newborn. This can make you feel guilty for not appreciating
what you have-your child, for which you worked so hard! Don't worry ,
this feeling is normal and will pass.
Your parenting
also is going to be influenced by your experience of infertility, because
your child is extra special and it is natural for you to want to dote
on him or her. This can be wonderful for your child because he or she
will always know how much he or she was wanted and how much he or she
is loved - but watch out for the emotional traps of being overprotective
and unintentionally spoiling the child.
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