Rh- blood type & IVF (in vitro fertilization) Posted: 03-18-07 15:56pm
My question is about being rh negative, I
am actually going thru in vitro right now
and have been reading things that are
freaking me out. I had an abortion when I
was 18 and found out I was a negative and
received a immuneglobulin shot. When I was
20 I had a miscarriage and never received
the shot, so now I read that I have
already may be sensitized, which I guess
that means I would not receive the
globulin shot at 28 weeks pregnat and
because I did not receive that shot how
much more does that put me at risk and
risk of what. And what would the most
likley procedure of my condition would
there be, and also are the treatments for
this very sucessful and am I worrying to
much for nothing.
One more question is what is the best
treatment for panic attacks while pregnat.
I barley ever take my ativan but my
comfort is knowing I can. What would be
the comfort drug while I am pregnat
without having to take something
everyday?
|
DoctorAnswer
Doctor Answer
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Pregnancy Answer A2513 Posted: 03-26-07 04:43am
It seems that the assisting doctors made a
mistake by NOT giving you the anti-Rh
immunoglobulin shot when you miscarried 10
years ago. Rh-sensibilisation happens in
Rh- mothers during delivery, miscarriage
or abortion of an Rh+ baby/fetus when the
erythrocytes from the fetus enter the
mother’s circulation. If the baby is
Rh-, sensibilisation won’t occur. We
can’t be always certain if a baby/fetus
is Rh+ or Rh-, so an anti-Rh
immunoglobulin shot is always administered
to an Rh- mother who has delivered,
miscarried or aborted. An anti-Rh
immunoglobulin shot can prevent Rh
sensibilisation only if the shot is given
just before or after delivery, miscarriage
or abortion. The shot must be
administered within 72 hours after any of
these procedures. After sensibilisation,
the mother’s immune system acquires the
ability to create anti-Rh antibodies that
destroy Rh+ erythrocytes. During the first
pregnancy with a Rh+ child,
sensibilisation happens at the end of the
pregnancy so there is not enough time or
amount of anti-Rh antibodies created to
damage the fetus.... but during the next
pregnancy with Rh+fetus, the antibodies
will be created much faster and in greater
amount so fetal damage will probably
happen.
At this time, your blood should be tested
for the presence of anti-Rh antibodies.
The presence of anti-Rh antibodies in your
blood is secure proof that you were
sensibilised 10 years ago. Lack of anti-Rh
antibodies, however is not enough evidence
to prove that you were not sensibilised...
because the antibodies expire over time
but the ability for their reproduction
remains. You can get pregnant but your
blood should be monitored for anti-Rh
antibodies during pregnancy. Ultrasound
scans and amniotic liquid checks for
bilirubin level should be done regularly.
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