the ventricular arrhythmias were ventricular premature depolarizations ( vpds ) , unsustained ventricular tachycardia ( vt ) ( greater than or equal to 3 and less than 20 vpds ) , sustained vt ( greater than or equal to 20 vpds ) , and ventricular fibrillation ( vf ) .
C0085612
ventricular arrhythmias
C0042510
ventricular fibrillation