阵发性室性心动过速(PVT)系指起源于房室束分叉以下心室的快速性心律失常。一般是3～5次连续的心室除极。以往多年来在人们的印象中将PVT列为少见的严重心律失常,实际上这是指室性心律失常中的恶性型而言。而有些PVT虽然反复发作,经治疗即可消失,而且反复进行B超、心电图、胸部X线及心肌酶等检查均未发现有器质性心脏病。现对其临床心 Paroxysmal ventricular tachycardia (PVT) refers to tachyarrhythmia originating in the ventricular chamber below the bifurcation of the atrioventricular bundle. Generally 3 to 5 times the continuous ventricular depolarization. Historically, PVT has been ranked as a rare severe arrhythmia in people’s minds for years, in fact referring to the malignant type of ventricular arrhythmia. While some PVT although recurrent, after treatment can disappear, and repeated B ultrasound, ECG, chest X-ray and myocardial enzymes and other tests were not found organic heart disease. Now its clinical heart