不同程度冠状动脉狭窄患者的心率变异性分析

Analysis of heart rate variability in patients with different degree of obstruction coronary obstruction

为探讨不同程度冠状动脉狭窄患者的心率变异性,对78例患者进行时域和频域分析法心率变异性分析.结果显示:SDNN、SDANN、SDNNN_(index)在冠状动脉狭窄≥50%的患者低于<50%及无狭窄的患者(P<0.05);狭窄程度≥375%的患音低于≤74%的患者(P<0.05);狭窄程度<50%与无狭窄患者间差异无显著意义(P>0.05).PNN_(50)在冠状动脉狭窄程度≥75%的患者低于无狭窄的患者(P<0.05),LF/HF则高于无狭窄的患者(P<0.05).提示冠状动脉狭窄程度<50%的患者的心脏自主神经调节功能受损不明,而狭窄≥50%的患者受损明显,且随着狭窄程度加重而加重.

To study heart rate rariability in patients with different degree of coronary obstruction, we analyse time domain and frequency domain of heart rate variability (HRV) in 78 patients. Result showed that: SDNN, SDANN, SDNNindex in patients with coronary obstruction≥50% were lower than that < 50 % and patients without obstruction (P < 0.05), in patients that obstruction≥75% were lower than that≤74% (P< 0.05), and there were no difference between < 50% and without obstruction (P > 0.05). There were lower PNN50 and higher LF/HF in patients that obstruction≥ 75% than that without obstruction (P< 0.05) .Conclusion is that heart autonomic activity of patients with coronary obstruction < 50% is not lesioned obviously, and it is le-sioned in patients with obstruction≥50% .Heart autonomic activity was worse with degree of coronary obstruction.