Infective endocarditis of a native quadricuspid aortic valve.

Quadricuspid aortic valve complicated with infective endocarditis is an uncommon clinical scenario. The indications for surgery and medical management do not differ from other types of aortic valve endocarditis. Commonly present structural abnormalities pose an increased risk of complete heart block and coronary occlusion during valve replacement. We present a case of quadricuspid aortic valve complicated with infective endocarditis, with surgical images of the valve.