<prompt> What is the mechanism of aoic regurgitation in a case of VSD?Prolapse of right coronary leafletChanges in the pressure gradient due to left to right shuntEisenmengerizationCongenital defect  <response>: Aoic regurgitation in VSDIt is a rare association seen in around 5 of VSDsIt is due to prolapse of the right coronary or non-coronary leaflet of the aoic valve or bothCommon when the defect is in the infundibular septum.Refer: Nelsons Textbook of Pediatrics, SAE, 1st edition, pg no. 2194 - 2195 