Which is the major advantage of chorionic villus sampling over amniocentesis?
a. It is not an invasive procedure.
b. It does not require a hospital setting.
c. It requires less time to obtain results.
d. It has less risk of spontaneous abortion.
ANS: C
Results from chorionic villus sampling can be known within 24 to 48 hours, whereas results from amniocentesis require 2 to 4 weeks. It is an invasive procedure. The woman has to be in a hospital setting for her and the fetus to be properly assessed during and after the procedure. The risk of an abortion is at the same level for both procedures.
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