Mason J W
Am J Cardiol. 1980 Jun;45(6):1126-31. doi: 10.1016/0002-9149(80)90469-5.
The incidence of repetitive ventricular beating in response to programmed single ventricular extrastimuli delivered during spontaneous rhythm was tabulated in 59 patients with recurrent ventricular tachycardia. Repetitive beating occurred in only nine patients (15 percent). The repetitive response seemed to be a result of bundle branch reentry in four subjects and possibly a result of other mechanisms in five. There was no difference in the incidence of repetitive beating or type of repetitive response in patients with and without ischemic heart disease. During an average patient follow-up period of 13.6 months, there were eight sudden and six nonsudden deaths. Life table analysis revealed a significantly greater incidence of sudden death in patients with ischemic than in patients with nonischemic heart disease. There was no significant difference in the incidence of sudden death in patients with and without repetitive beating. It is concluded that the repetitive response to single ventricular extra-stimulation is infrequent in patients with recurrent ventricular tachycardia, and that repetitive beating is not a prognostic indicator or an indicator of vulnerability to ventricular tachycardia.
对59例复发性室性心动过速患者在自主心律期间进行程控单心室额外刺激时出现的重复性室性搏动发生率进行了列表统计。仅9例患者（15%）出现重复性搏动。4例患者的重复性搏动似乎是束支折返的结果，5例可能是其他机制导致的。有无缺血性心脏病的患者在重复性搏动发生率或重复性反应类型上无差异。在平均13.6个月的患者随访期内，有8例猝死和6例非猝死。寿命表分析显示，缺血性心脏病患者的猝死发生率显著高于非缺血性心脏病患者。有无重复性搏动的患者在猝死发生率上无显著差异。得出的结论是，复发性室性心动过速患者对单心室额外刺激的重复性反应并不常见，且重复性搏动不是预后指标或室性心动过速易感性指标。
