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对６５例不同陈旧性心肌梗死部位患者采用频域和时域法分析经皮腔内冠脉成形术（ＰＴＣＡ）前、后的心率变异性（ＨＲＶ），旨在了解不同心肌梗死部位患者ＨＲＶ的变化及ＰＴＣＡ术对患者自主神经系统的影响。结果提示不同心肌梗死部位患者的ＨＲＶ无明显差异，而ＰＴＣＡ术后高频段（ＨＦ）、标准差（ＳＤＮＮ）均技术前增加，低频段（ＬＦ）及ＬＦ／ＨＦ较术前降低。说明ＰＴＣＡ术后交感神经活性降低迷走神经活性增加。提出ＰＴＣＡ术后可能改善冠心病患者的远期预后。
The heart rate variability (HRV) before and after percutaneous transluminal coronary angioplasty (PTCA) was analyzed by frequency domain and time domain in 65 patients with different sites of old myocardial infarction in order to understand the relationship between HRV in different myocardial infarction patients Changes and PTCA surgery on patients with autonomic nervous system effects. The results suggest that there is no significant difference in HRV among patients with different myocardial infarction. However, both high frequency (HF) and standard deviation (SDNN) of PTCA increased preoperatively, low frequency (LF) and LF / HF decreased. Sympathetic nerve activity after PTCA reduced vagal activity increased. Proposed PTCA may improve the long-term prognosis of patients with coronary heart disease.