Tissue is removed using a syringe on the other end of the catheter.
Expectant Mother's Guide is a publication from Spindle Publishing Company, Inc. The woman's abdomen is cleansed with an antiseptic. During contractions, an external tocodynamometer a monitoring device that is placed over the top of the uterus with a belt can record the patterns of contractions. This test is usually performed between 10 and 14 weeks of pregnancy. Tissue is removed using a syringe on the other end of the catheter. Another method is transabdominal CVS, which involves inserting a needle through the woman's abdomen and into her uterus to sample the placental cells.
About Your GuideMeet Steffany, your San Jose expert. You will be given a special glucose solution to drink. Women with twins or other multiples usually need sampling from each placenta.