thirteen patients had a coronary artery bypass procedure alone , 1 had a bypass procedure plus aortic valve replacement , 1 had a bypass procedure plus repair of the mitral valve , 1 had a bypass procedure and resection of a left ventricular aneurysm , and 1 had aortic valve and mitral valve replacement for endocarditis .
C0003506
procedure
C0003501
aortic valve