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目的探讨冠心病患者的窦性心率震荡(HRT)及其与心率变异性(HRV)和室性早搏之间的关系。方法86例冠心病患者行24h动态心电图检查,计算机自动测定HRT的两个参数震荡初始(TO)和震荡斜率(TS)、HRV时域和频域指标及室性早搏数目。结果冠心病患者的HRT减弱,HRV降低,且TO与时域指标SDNN和SDANN及频域指标LF和LF/HF明显相关(p<0.05),TS与时域指标SDNN和RMSSD及频域指标HF和LF/HF及室性早搏数目明显相关(p<0.05)。结论冠心病患者的HRT现象减弱,且HRT与HRV及室性早搏数目明显相关。HRT应当是一种较HRV更好预测高危冠心病患者的无创性检查方法。
Objective To investigate the relationship between sinus rhythm heart rate (HRT) and its relationship with heart rate variability (HRV) and ventricular premature beats in patients with coronary heart disease. Methods Eighty-six patients with coronary heart disease underwent 24-hour ambulatory electrocardiogram examination. The two parameters of HRT, oscillating onset (TO) and oscillating slope (TS), HRV time-domain and frequency-domain indexes and the number of ventricular premature beats were measured automatically by computer. Results HRT decreased, HRV decreased, and TO was correlated with SDNN, SDANN and LF and LF / HF (p <0.05), TS with time domain indicators SDNN and RMSSD and frequency domain indicator HF Significantly correlated with the number of LF / HF and premature ventricular contractions (p <0.05). Conclusion The HRT phenomenon in patients with coronary heart disease weakened, and HRT and HRV and ventricular premature beats significantly correlated. HRT should be a better noninvasive method of predicting high-risk CHD patients than HRV.