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Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
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Most common type of Atrial septal defect is
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The correct answer is  The atrial septal defect can occur in any poion of the atrial septum(secundum, primum or sinus venosus)OSTIUM SECUNDUM:Most common type of ASD accounts for 7% of al congenital hea disease.Defect situated at fossa ovalis.Associated with structurally normal atrioventricular (AV)valves.OSTIUM PRIMUM/ ENDOCARDIAL CUSHION DEFECT:Defect situated inferior to fossa ovalis.Associated with the cleft in AV valves.Most common cardiac lesion in Down&;s syndrome is endocardial cushion defect.