A normal rhythm ORS premature ventricular beat 人人人入人 C paroxysmal supraventricular tachycardia arrhythmias (PSVT) D atrial fibrillation Abnormal pacemaker, -y rhythm and Ay E atral flutter with variable AV conduction coordination ofheart beats. +++++++++++4+++++ all arrhythmias result from F atrial flutter with 1: 1 AV conduction (1)disturbances in impulse ormation G monomorphic ventricular tachycardia (2)disturbances in impulse conduction H Torsades de Pointes (3)both. ventricular fibrillationarrhythmias Abnormal pacemaker, rhythm and AV coordination of heart beats. all arrhythmias result from (1) disturbances in impulse formation, (2) disturbances in impulse conduction, (3) both