Ostium primum atrial septal defect is characteristically associated with which valvular finding?

Prepare for the Fetal Echocardiography Test. Utilize flashcards and multiple-choice questions that come with hints and explanations. Ace your exam preparation!

Multiple Choice

Ostium primum atrial septal defect is characteristically associated with which valvular finding?

Ostium primum ASD arises from failure of the endocardial cushions to fuse, placing the defect at the low part of the atrial septum right near the AV valves. This group of defects is part of the atrioventricular canal/anomalous AV junction spectrum, where the AV valves are often malformed because they share tissue from the cushions. The hallmark valvular finding is a cleft in the mitral valve leaflet (commonly the anterior leaflet), producing regurgitation. This cleft in the AV valve is the best-fit description for ostium primum ASD. A healthy AV valve would be unlikely in this context, and bicuspid aortic valve or tricuspid atresia describes different conditions not characteristically linked to this defect.

Ostium primum ASD arises from failure of the endocardial cushions to fuse, placing the defect at the low part of the atrial septum right near the AV valves. This group of defects is part of the atrioventricular canal/anomalous AV junction spectrum, where the AV valves are often malformed because they share tissue from the cushions. The hallmark valvular finding is a cleft in the mitral valve leaflet (commonly the anterior leaflet), producing regurgitation. This cleft in the AV valve is the best-fit description for ostium primum ASD. A healthy AV valve would be unlikely in this context, and bicuspid aortic valve or tricuspid atresia describes different conditions not characteristically linked to this defect.

More practice questions