Conduction abnormalities in A-V junctional rhythm shortly after cardiac surgery.

mission when he suddenly developed severe dyspnea and symptoms of congestive heart failure. Physical examination, ECG, x-ray examination and catheterization of the heart suggested severe mitral regurgitation with left and right heart failure. He was scheduled for operation with the diagnosis of ruptured chordae of the mitral valve with severe mitral incompetence. At operation, all chordae of the distal half of the