<prompt> High risk lesions for Infective Endocarditis are all except:-Prosthetic heart valvesPrior history of infective endocarditisAortic regurgitationComplex cyanotic congenital heart disease  <response>: High risk lesions for IE requiring antibiotic prophylaxis for surgical procedures:- i. Prosthetic heart valves.ii. Prior endocarditis.iii. Unrepaired cyanotic congenital heart diseaseCCHD.iv. Completely repaired CCHD during the 6 months after repair.v. Incompletely repaired CCHD with residual defects - Valvulopathy developing after cardiac transplantation. 