慢性心力衰竭患者心率震荡的检测及其临床意义

Detection and Clinical Significance of Heat Rate Turbulence in Patients with Chronic Heart Failure

目的:观察慢性心力衰竭患者窦性心率震荡(HRT)现象的特征并探讨其临床意义。方法:48例慢性心衰患者(心衰组)和35例非器质性心脏病患者(对照组)均接受24h动态心电图检查,分别计算HRT的初始值(TO)、震荡斜率(TS)。结果:心衰组TO明显高于对照组[(0.76±3.42)%与(-1.61±2.05)%,P<0.01];心衰组TS明显低于对照组[(2.53±1.21)ms/R-R与(9.56±4.03)ms/R-R,P<0.001]。结论:慢性心衰患者中HRT现象明显减弱。

Objective To explore the change of heart rate turbulence （HRT）in patients with chronic heart failure（CHF） and its cliuical significance. Methods The HRT were measured in 48 patients with CHF and 35 patients without obvious heart disease （control group）. Turbulence onset （TO） and turbulence slope （TS） were measured by the loriginal definitions using digitized Holter recordings. Results The value of the TO was significantly higher in CHF group than in control group[ （0.76 ± 3.42） % vs（-1.61 ± 2.05 ）%, P 〈 0.01 ], The value of the TS was significantly lower in CHF group than in control group [ （2. 53 ± 1.21 ） ms/R-R vs （ 9.56 ± 4.03 ） ms/R-R, P 〈 0. 001 ]. Conclusion HRT was significantly blunted in CHF patients.