Atrial septal defect: The Daily PANCE Blueprint
Which of the following is the most common type of atrial septal defect?
A. Sinus venosus
B. Ostium primum
C. Ostium secundum
D. Coronary sinus
E. None of the above
Answer and topic summary
The answer is C. Ostium secundum
Atrial septal defect is the most common congenital heart lesion in adults. People often don’t have symptoms until adulthood. The most common type is ostium secundum. Symptoms include fatigue and dyspnea. A classic physical exam finding on a test would be a systolic ejection crescendo-decrescendo flow murmur @ LUSB with FIXED S2, loud S1. An echocardiography is the initial imaging modality of choice. Keep in mind that a complication of ASD is that the left-to-right shunt can cause volume and pressure overload of the right heart and pulmonary circulation, leading to pulmonary hypertension.
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Smarty PANCE Content Blueprint Review:
Covered under ⇒ PANCE Blueprint Cardiology ⇒ ⇒
Also covered as part of the Pediatric EOR topic list
