ventricular arrhythmias were detected as follows preoperatively in 12 patients , after operation in all patients , paired ventricular extrasystoles or episodes of ventricular tachycardia were found in 5 cases before and in 7 after operation , ventricular fibrillation in one case .
C0085612
ventricular arrhythmias
C0042510
ventricular fibrillation