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本文运用心率能谱分析法（ＨＲＰＳ）研究急性心肌梗死不同病程患者的心率变异性（ＨＲＶ），发现两周内急性心肌梗死患者存在明显植物神经调节失衡，表现交感神经功能亢进，迷走神经张力受损。在１年追踪观察中，发现其心率能谱图的低频峰逐渐降低，高频峰逐渐升高，提示这种植物神经调节逐渐恢复平衡；而急性期合并休克、心力衰竭或室性心动过速患者，心率能谱图各频峰均降低，且无明显恢复。这说明植物神经调节失衡同各种疾病发展过程关系密切，且提示ＨＲＰＳ分析法是一种敏感的、非侵入性检测植物神经活性定量方法。
In this study, heart rate variability (HRV) was studied in patients with different stages of acute myocardial infarction by using heart rate spectroscopy (HRPS). It was found that in patients with acute myocardial infarction within two weeks there was an imbalanced autonomic imbalance, indicating sympathetic hyperactivity and impaired vagal tone . In 1-year follow-up observation, found that the low frequency peak of the heart rate spectrogram gradually decreased, the high frequency peak gradually increased, suggesting that the autonomic regulation gradually restored to balance; and acute shock patients with heart failure or ventricular tachycardia, Heart rate spectrum of the peaks were reduced, and no significant recovery. This suggests that imbalance of autonomic regulation is closely related to the development of various diseases, and suggests that HRPS analysis is a sensitive and noninvasive quantitative method for the detection of autonomic activity.