Patient care

Ultrasonography precedes the CVS in order to identify the location of the fetus and placenta and to avoid injury. Based on ultrasonographic findings, the CVS is performed either through the vagina (with a speculum to visualize the cervix) or through the lower abdominal wall (with a needle). The patient is prepared in either case with sterile cleansing of the area. Her Rh status is determined, and Rh negative women are given Rh immunoglobulin after CVS. Many women experience cramping or pelvic pressure during the procedure. Potential complications include postprocedure bleeding, infection (chorioamnionitis), fetal injury, or miscarriage, which occurs after roughly 1% to 2% of CVS procedures. After CVS a friend, partner, spouse, or family member should drive the patient home. Activities should be limited for about 24 hr. Women affected by symptoms suggestive of complications should return promptly for follow-up care.