An infant undergoes an echocardiogram for a suspected heart defect. Tests reveal an opening in the middle of the atrial septum. This defect is referred to as:
A) ostium primum atrial septal defect.
B) ostium secundum atrial septal defect.
C) sinus venosus atrial septal defect.
D) Eisenmenger syndrome.

Question

Quizplus · Accepted Answer

An opening in the middle of the atrial septum is referred to as an ostium secundum atrial septal defect. Option A is incorrect because ostium primum atrial septal defect occurs lower in the septum. Option C is incorrect because sinus venosus atrial septal defect occurs near the top of the atrial septum. Option D is incorrect as Eisenmenger syndrome is a complication of certain heart defects and not a specific defect itself.

An Infant Undergoes an Echocardiogram for a Suspected Heart Defect