A client's chorionic villus sampling (CVS)reveals mosaicism,but amniocentesis does not.How should the nurse evaluate these results?

Question

Quizplus · Accepted Answer

Confined placental mosaicism (CPM) occurs when there is mosaic chromosomal abnormality in the placenta but not in the fetus. CVS samples tissue from the placenta, while amniocentesis samples fetal cells in amniotic fluid, so it is possible for the two tests to produce different results. Amniocentesis is considered a more accurate test for detecting fetal chromosomal abnormalities. Anaphase lag is a rare event that can occur during cell division but does not explain the difference in results between tests.

A Client's Chorionic Villus Sampling (CVS)reveals Mosaicism,but Amniocentesis Does Not