心率震荡不同指标对急性心肌梗死风险的预测价值

目的〓〖HTK〗研究急性心肌梗死（AMI）患者窦性心率震荡（HRT）的各个指标对预后的预测价值。〖HTW〗方法〓〖HTK〗选择AMI患者110例，测量HRT的3个参数：震荡斜率起始时间（TT）、震荡初始（TO）和震荡斜率（TS）及其他指标。〖HTW〗结果〓〖HTK〗① 随访患者93例，平均随访（18.70±12.65）个月，发生终点事件者20例；② 事件组TT、TO高于非事件组，TS低于非事件组（P＜0.05）, 事件组HRT较非事件组明显减弱；③ 单因素及多因素分析均表明，TT与TO、TS结合时对再发心脏事件的优势比最强（OR单＝8.632；OR多＝6.056，P＜0.01）。〖HTW〗结论〓〖HTK〗TT与TO、TS结合对AMI后再发心脏事件的预测价值最大，HRT可作为其有效预测因子。

Prognostic value of heart rate turbulence parameters for acute myocardial infarction

Objective〓〖WTBZ〗To investigate the prognostic value of heart rate turbulence (HRT) for acute myocardial infarction (AMI). 〖WTHZ〗Methods〓〖WTBZ〗110 patients with AMI for 1-3 weeks were enrolled in this study. Parameters including turbulence timing(TT), turbulence onset (TO), turbulence slope (TS) and other parameters were determined. 〖WTHZ〗Results〓〖WTBZ〗① Ninety-three patients with AMI were followed up for an average (18.70±12.65) months, and 20 of them again suffered from a heart incident. ② Patients in the event group had statistically higher TT and TO values and lower TS values than the non-event group (P＜0.05), and the phenomenon of HRT in the event group was significantly weakened. ③ Both uni-variate and multivariate analysis showed that TT combined with TO and TS was the strongest risk predictor (OR=8.632； OR＝6.056, P＜0.01). 〖WTHZ〗Conclusions〓〖WTBZ〗HRT could serve as a strong predictor for subsequent development of poor outcomes in AMI patients.