Most common cause of single S2 – Cardiology MCQ

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Most common cause of single S2 – Cardiology MCQ

Most common cause of single second heart sound (S2):

a) Complete transposition of great arteries

b) Pulmonary atresia

c) Severe pulmonary stenosis

d) Inaudibility of pulmonary component (P2) due to increased anteroposterior diameter of chest in older adults

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