Most common heart lesion in down syndrome:: (A) Endocardial cushion defect, (B) ASD with ostium secundum, (C) VSD, (D) Coarctation of aorta
Answer is A. a. Endocardial cushion defect(Ref: Nelson's 20/e p 610-614)Most common cardiac defect in Down syndrome is Endocardial cushion defect or Atrioventricular septal defect