【摘要】 目的 探讨心动周期信号混沌特征分析在判断慢性充血性心力衰竭患者预后中的临床应用价值。方法 对40例慢性充血性心力衰竭患者进行心动周期信号混沌特征分析,然后对其进行跟踪随访,了解其预后和转归。结果 随访12～36个月,平均(28±10)个月,12例死亡。死亡组与存活组比较,死亡组的混沌度参数(Hrd、Hle、Hfd、Hcc)显著降低(P<0.01);在功率频谱指标中,Pvv、Pvr、Pvh显著升高(P<0.01),Phv、Phr和Tfp显著降低(P<0.01)。结论 心动周期信号混沌特征分析是判断慢性充血性心力衰竭患者预后的一项有用指标,有助于对慢性充血性心力衰竭患者进行危险分层。更多还原

【Abstract】 Objective To investigate the prognostic value of the analysis of chaotic characteristics of heart period signal(HPS) on chronic congestive heart failure patients. Methods The parameters of chaotic characteristics of heart period signal of 40 cases with chronic congestive heart failure were analysed and the patients were followed up for prognosis. Results We followed up (28±10) months(12-36 months), 12 patients died. Compared with survivors, the chaotic parameters(Hrd, Hle, Hfd, Hcc) of the died patients were lower significantly than those of the survivors(P<0.01); in the power spectrum components, the Pvv, Pvr, Rvh of the died patients were higher significantly than those of the survivors(P<0.01) and the Phv, Phr, Tfp of the died patients were lower significantly than those of the survivors( P < 0.01). Conclusion The analysis of chaotic characteristics of heart period signal is a valuable method in evaluating prognosis of chronic congestive heart failure patients and is useful to stratify the chronic congestive heart failure patients.更多还原