Surgical procedures involving division of common atrioventricular valve + closure of ASD and VSD + creation of separate tricuspid and mitral valve are performed for which of the following congenital heart diseases?
  1. Tetralogy of Fallot
  2. Ventricular septal defect
  3. Atrial septal defect
  4. Endocardial cushion defects
Explanation
Answer: D - Endocardial cushion defects (AV canal)
• Defects resulting from deficiency of atrioventricular septum (common in Trisomy 21)
• Indications for surgery: should be repaired by age 6 months to prevent development of pulmonary hypertension
Surgical procedures: division of common atrioventricular valve + closure of ASD and VSD + creation of separate tricuspid and mitral valve
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