首页> 外文会议>Engineering in Medicine and Biology Society, 2000. Proceedings of the 22nd Annual International Conference of the IEEE >Time-frequency representation of the HRV: a tool to characterize sudden cardiac death in hypertrophy cardiomyopathy patients
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Time-frequency representation of the HRV: a tool to characterize sudden cardiac death in hypertrophy cardiomyopathy patients

机译:HRV的时频表示:表征肥厚型心肌病患者突发性心源性死亡的工具

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In the present work, Heart Rate Variability (HRV) is described by time-frequency representation (TFR), in order to stratify hypertrophic cardiomyopathy (HCM) patients with increasing risk of suffering sudden cardiac death (SCD). TFR and Fast Fourier Transform (FFT) analysis are also compared. The analysis is based on three frequency bands: VLF, 0-0.04 Hz; LF, 0.04-0.15 Hz; and KF, 0.15-0.45 Hz. New variables based on the instantaneous frequency and energy functions using TFR and time-domain analysis allow to discriminate HCM patients with high risk and low risk of SCD (p>0.05). Results shown that TFR analysis of the HRV seems to present more robustness than FFT analysis in order to characterize HRV.
机译:在本作的工作中,通过时频表示(TFR)描述了心率变异性(HRV),以分层患有突然心脏死亡(SCD)的风险增加的肥厚性心肌病(HCM)患者。还比较了TFR和快速傅里叶变换(FFT)分析。分析基于三个频段:VLF,0-0.04 Hz; LF,0.04-0.15 Hz;和kf,0.15-0.45 Hz。使用TFR和时域分析基于瞬时频率和能量函数的新变量允许区分高风险和SCD风险低(P> 0.05)的HCM患者。结果表明,HRV的TFR分析似乎呈现比FFT分析更多的鲁棒性,以便表征HRV。

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