A female with a family history of a genetic disorder became pregnant. Transabdominal chorionic villus sampling (CVS) can be done in:: (A) 7-9 weeks, (B) 10 weeks to term, (C) 9-11 weeks, (D) 13-15 weeks
Answer is B. Chorionic villus sampling (CVS) is the second most common procedure for genetic prenatal diagnosis. This procedure is routinely performed transcervically at about 10-12 weeks of gestation and transabdominally from 10 weeks to term. Limb reduction defects are high when CVS was performed at less than 10 weeks of gestation. Ref: Textbook of Obstetrics by DC Dutta, 6th edition, Page 108.