24小时动态心电图检出室性心动过速分析

Analysis of Ventricular Tachycardia in Ambulatory Patients

对５７例２４ｈ动态心电图检出的３１６阵室性心动过速进行分析发现，发生在日间活动中最多，共２１２阵，占６７％；发生在睡眠中１０４阵，占３３％。有１５４阵室性心动过速发生前有ＳＴ段压低或上抬，提示室性心动过速发生与心肌缺血有关。３１２阵室性心动过速中提前指教大于或等于１．０（占９８．７％），说明室性心动过速的发生大多数不是由＂Ｒ波重叠Ｔ波＂现象激发；易损指数无一阵大于１．０，提示动态心电图监测的室性心动过速不具有高的易损指数。３１６阵室心动过速无一例发展为心室扑动或心室颤动。

To detect and analyse episodic ventricular tachycardia(EVT)in ambulatory patients, 24 h electrocardiographic recordings were performed in 57 consecutive patients with stable heart disease.Total number of EVT was 316.212 episodes( 68%)oc cured in day time when the patients were going about everyday activities.104 episodes(33%)occured during sleep.ST elevation or depression were noted in 154 episodes before on set of EVT,suggesting EVT might be related to myocardial ischemia.312 episodes(98.7%)had premature index(R-R'QT)≥1 indicating the majority of of EVT were not triggered by 'Ron on T' phenomenon. Average vulnerability index(RR ×OT)/RR'was 0.54, index value greater than one was not observed,most EVT were not associated with high vulnerability index. None of the 316 episodes terminated in vertricular flutter or ventricular fibrillation.