Read the form carefully and ask questions if anything is unclear. You will be asked to sign a consent form that gives your permission to do the procedure. Your healthcare provider will explain the procedure and you can ask questions. Be sure to discuss any concerns with your healthcare provider before the procedure. You may have other risks, depending on your condition. Women with twins or other multiples will need fluid samples from each amniotic sac to study each baby The position of the baby, placenta, amount of fluid, or mother's anatomy This is only slightly higher than the normal risk of miscarriage at this time in pregnancy.Ĭertain factors or conditions may interfere with an amniocentesis. The risk of miscarriage is considered less than 1% after an amniocentesis in the second trimester of pregnancy. Some complications of an amniocentesis may include:īleeding or leaking of amniotic fluid from the needle puncture site or the vagina Your healthcare provider may have other reasons to recommend an amniocentesis. Maternal age over 35 years by the pregnancy due dateĪmniocentesis may be used in the third trimester of pregnancy to check for:įetal lung maturity when there is a potential for premature birth Risk of open neural tube defects, such as spina bifida Some conditions where an amniocentesis may be used for genetic and chromosome testing in the second trimester of pregnancy include:įamily history or previous child with a genetic disease or metabolic disorder, such as Down syndrome, cystic fibrosis, or Tay Sachs disease It may also be used to follow-up when an earlier test suggests a problem. Why might I need an amniocentesis?Īn amniocentesis is offered to women between the 15th and 20th weeks of pregnancy who are at greater risk for birth defects. Results from fetal lung maturity tests are ready within a few hours. Results are most often ready in about 10 to 14 days, depending on the lab. The fluid is sent to a lab so that the cells can grow and be analyzed. If a baby is expected to be delivered early, amniocentesis may be done to check for fetal lung maturity. This procedure may be done in late pregnancy to check fetal well-being and diagnose fetal health problems, such as infection. This test may also be done to check for inherited gene defects and metabolic disorders based on the family history.Īmniotic fluid also contains other substances that give information about the fetus. These cells have genetic information that can be used to diagnose genetic disorders and open neural tube defects (ONTDs), such as spina bifida. Helps control the temperature of the fetusĪlong with various enzymes, proteins, hormones, and other substances, the amniotic fluid contains cells shed by the fetus. Amniotic fluid is a clear, pale yellow fluid that:Īllows the baby to move and develop properly This is the fluid that surrounds the fetus in a pregnant woman. Amniocentesis is a procedure used to take out a small sample of the amniotic fluid for testing.
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