【摘要】 目的应用窦性心率震荡(heart rate turbulence,HRT)这一新的预测心脏性猝死方法,探讨窦性心动过缓患者的临床预后。方法30例窦性心动过缓患者接受动态心电图检查,窦性心率<50次/分为入组条件。采集单发室性早搏的前2个窦性RR间期及后20个窦性RR间期,根据公式分别计算震荡初始(turbulence on-set,TO)和震荡斜率(turbulence splope,TS)。结果30例窦性心动过缓患者的HRT均值TO:(1.03±0.97)%;TS:(3.87±1.93)ms/RR间期。提示本文30例窦性心动过缓患者室性早搏后初始窦性心率加速现象消失。结论窦性心率<50次/分的心动过缓患者可能也是发生心脏性猝死的高危人群。更多还原

【Abstract】 Objectives To investigate the clinical prognosis of sinus bradycardia patients with the application of a new method that prognosticates the sudden cardiac death heart rate turbulence(HRT).Methods Thirty sinus bradycardia patients undertook the active electrocardiograph(AECG)examination,and those with sinus rhythm less than 50 beats per minute were enrolled in group.The first two and last 20 sinus RR intervals of single ventricular premature beat were collected,and turbulence onset(TO)and turbulence slope(TS)were calculated based on formula.Results The average TO and TS values of HRT in 30 sinus bradycardia patients were(1.03±0.97)% and(3.87±1.93) ms/RR interval,respectively.This fact suggested the disappearance of increased sinus rhythm after ventricular premature beat(VPB)in the 30 sinus bradycardia cases in the study.Conclusion The sinus bradycardia patients who have sinus rhythm less than 50 beats per minute may be the high risk group of sudden cardiac death.更多还原