What Happens During an Amniocentesis?
A small area of the abdomen is cleansed with an antiseptic to prepare for the amniocentesis. You may receive a local anesthetic (pain-relieving medication) to reduce any discomfort. Guided by ultrasound, the doctor first locates the position of the fetus and placenta. Under ultrasound guidance, the doctor inserts a thin, hollow needle through your abdomen and uterus, and into the amniotic sac, away from the baby. A small amount of fluid (less than an ounce) is removed through the needle and sent for laboratory analysis. You may feel minor menstrual-like cramping or discomfort; this is not unusual during the amniocentesis or for a few hours after the procedure.
