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目的探讨高血压合并冠心病患者心率减速力(DC)与心率变异性(HRV)的相关性。方法选择36例窦性心律的高血压合并冠心病患者和40例正常人对照组,进行24h动态心电图检查,应用国内自行研制的DC处理软件,离线计算DC、HRV时域指标。结果高血压合并冠心病组的DC、HRV降低;且DC与时域指标SDNN、RMSSD、PNN50显著相关(p<0.01)。结论 DC指标和HRV指标有较好的相关性,DC可作为自主神经功能检测的指标。
Objective To investigate the relationship between heart rate deceleration (DC) and heart rate variability (HRV) in patients with hypertension and coronary heart disease. Methods Thirty-six patients with coronary heart disease with hypertension and 40 normal controls were enrolled in this study. 24h dynamic electrocardiogram (ECG) was performed. DC software developed in China was used to calculate DC and HRV time-domain indexes offline. Results The DCs and HRVs were decreased in hypertensive patients with coronary heart disease. The DCs were significantly correlated with the time domain indices SDNN, RMSSD and PNN50 (p <0.01). Conclusions There is a good correlation between DC index and HRV index. DC can be used as an index of autonomic nerve function test.