Amniocentesis is a prenatal diagnostic test performed after your 15th week of pregnancy. Using high resolution ultrasound for guidance, the physician inserts a needle into the amniotic sac to take our a few teaspoons of amniotic fluid. This sample can be used to detect chromosome abnormalities, to see if infection may be present, to look for genetic diseases, and for many other tests. (Later in your pregnancy amniocentesis may be used to see if your fetus's lungs are mature). Genetic counseling is recommended for anyone who is considering any type of prenatal testing.

Some of the most common reasons couples consider undergoing amniocentesis are:

• Age 35 or older at delivery
• A previous child with a chromosome abnormality or metabolic disorder
• One or both parents carry a chromosome translocation (rearrangement) or a genetic disease (Tay-Sachs, sickle cell anemia, and many others form which we have genetic testing available)
• An abnormal serum screen for genetic problems (First trimester screen, triple screen, quad screen) indicating an increased risk for chromosome abnormalities
• Finding of a fetal abnormality on ultrasound
• Risk of fetal infection
• Risk of problems caused by Rh (blood type) incompatibility

In general, you should be able to resume most daily activities after amniocentesis. You may return to work, as long as your job does not require excessive physical activity. The following general guidelines will help with follow-up care:

• For 24 to 48 hours after your amniocentesis:
  • Stay off your feet as much as possible
  • No exercise or heavy lifting
  • No sexual intercourse or sexual activity
  • Drink extra fluid
  • If one or more of the following occur, please let us know before the procedure: constipation, excessive sneezing, coughing.
• Commonly experienced symptoms after amniocentesis:
  • Minor bruising or soreness at the area of insertion
  • Mild cramping for a few hours (if you wish, you may take Tylenol for this discomfort)
• Complications to watch for after amniocentesis:
  • Vaginal bleeding
  • Loss of amniotic fluid from the vagina
  • Cramping lasting more than 4 to 6 hours
  • Fever or Chills
• If complications occur:
  • Bed rest is advisable
  • Call your obstetrician. Your obstetrician may choose to contact us directly, or you may feel free to call our office and speak with our nurse at (301) 279-6060.
• Your results:
  • Results will be ready 10 to 14 days following your amniocentesis. Results occasionally take longer. If you do not have your results in fourteen days from the procedure, feel free to contact us. When calling, please be sure to leave phone numbers where you can be reached late in the day.