Cert Cardiology(SA) Paed Practice Questions - CMSA Sub-specialty Certificate In Cardiology Cert Cardiology(SA) Paed Exam

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A 3-month-old infant with a known perimembranous ventricular septal defect (VSD) is evaluated on follow-up echocardiography. The defect size has decreased from 6 mm to 2 mm. Which anatomical structure is primarily responsible for the spontaneous closure or reduction in size of perimembranous VSDs?

Tricuspid valve septal leaflet tissue and pouch formation Hypertrophy of the crista supraventricularis muscle bundle Prolapse of the right coronary cusp of the aortic valve Growth of the muscular ventricular septum

Correct Answer:

Tricuspid valve septal leaflet tissue and pouch formation

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