[A case of repeated unconsciousness caused by excrescence locking bicuspid aortic valve].

We received a patient who repeated unconsciousness due to excrescence locking bicuspid aortic valve. He experienced unconsciousness and treatments with anti infection, surgical operation, valve replacement and recovery. It was a rare case, which made us realize that the heart color Doppler ultrasound should be regularly performed in patients with aortic valve abnormalities. Once patients were found to have infective endocarditis combined with the valve vegetations, they should be formally treated as soon as possible.