Question

Quad screen in Trisomy 21 (MSAFP, BHCG, Estriol, and Inhibin A):

a) Increased MSAFP, decreased Bhcg, decreased estriol, increased inhibin A
b) Increased MSAFP, increased Bhcg, decreased estriol, increased inhibin A
c) Decreased MSAFP, increased Bhcg, decreased estriol, increased inhibin A
d) Decreased MSAFP, decreased Bhcg, decreased estriol, decreased inhibin A

Answer 1

The quad screen in Trisomy 21 measures levels of MSAFP, Bhcg, estriol, and inhibin A. The correct answer is a) Increased MSAFP, decreased Bhcg, decreased estriol, increased inhibin A. These patterns help in identifying the risk of Trisomy 21 in the fetus.

Step-by-step explanation:

The correct answer is: a) Increased MSAFP, decreased Bhcg, decreased estriol, increased inhibin A.

The quad screen is a prenatal screening test used to assess the risk of certain genetic disorders in the fetus. Trisomy 21, also known as Down syndrome, is one of the conditions that can be detected using the quad screen.

In Trisomy 21, the quad screen typically shows an increased level of Maternal Serum Alpha-Fetoprotein (MSAFP), a decreased level of Beta-Human Chorionic Gonadotropin (BHCG), a decreased level of Estriol, and an increased level of Inhibin A. These patterns of biomarker levels help in identifying the risk of Trisomy 21 in the fetus.