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目的分析心率震荡(HRT)对扩张型心肌病(DCM)患者猝死和恶性心律失常的预测价值。方法选择2006年12至2008年12月在我院就诊的DCM患者83例。根据24h动态心电图(Holter)记录资料,计算HRT的两个参数:震荡初始(TO)和震荡斜率(TS),HRT1组,TO和TS均异常,即TO>0%和TS<2.5ms/RR间期,HRT0组,TO或TS中1项异常;终点事件是心源性死亡以及恶性心律失常。结果 HRT异常占入选患者总数的27.7%,在445±126的随访时间,10例死亡,HRT1与年龄、LVEF、TO、TS具有相关性。HRT异常与DCM患者的死亡率均密切相关。结论 HRT与年龄、LVEF等指标有较好的相关性,可作为评价DCM患者预后的指标之一。
Objective To analyze the predictive value of heart rate turbulence (HRT) on sudden death and malignant arrhythmia in patients with dilated cardiomyopathy (DCM). Methods Totally 83 DCM patients were treated in our hospital from December 2006 to December 2008. According to 24-hour Holter recorded data, two parameters of HRT were calculated: TO and TS, HRT1 group, TO and TS were abnormal, ie TO> 0% and TS <2.5ms / RR Intermittent, HRT0 group, TO or TS in an abnormal; end point of cardiac death and malignant arrhythmia. Results HRT abnormalities accounted for 27.7% of the total number of patients enrolled in the study. At the follow-up time of 445 ± 126, 10 patients died and HRT1 was related to age, LVEF, TO and TS. HRT abnormalities and DCM patients are closely related to mortality. Conclusion HRT and age, LVEF and other indicators have a good correlation, can be used as a prognostic indicator of DCM one of the indicators.