Congenital heart defects that cause hypoxemia, and therefore cyanosis, usually involve:
A)right-to-left shunts.
B)left-to-right shunts.
C)obstructive lesions.
D)mixed lesions.

Question

Quizplus · Accepted Answer

Lesions increasing pulmonary blood flow include defects that allow blood flow to shunt from the high-pressure left side to the lower-pressure right side, resulting in pulmonary congestion.

Congenital Heart Defects That Cause Hypoxemia, and Therefore Cyanosis, Usually