conduction disturbances ( sinus node dysfunction , first-degree heart block , pre-excitation ) , supraventricular arrhythmias ( supraventricular tachycardia , atrial fibrillation , premature contractions of atrial or junctional origin ) and ventricular arrhythmias ( ventricular tachycardia , multifocal premature contractions ) were observed on holter monitoring in 26 subjects .
C0085612
ventricular arrhythmias
C0042514
ventricular tachycardia