The Clinical Research of Heart Rate Variability in 78 Cases of Myocardial Infarction / 医学研究杂志

ABSTRACT

Objective To study the heart rate variability of patients with myocardial infarction. Methods To analyze the time domain and frequency domain indexes indicators of the heart rate variability of 24h Holter in 78 cases of myocardial infarction patients and 76 cases of normal adults. Results (1) The time - domain analysis parameters of the myocardial infarction patients are reduced. (2) Myocardial infarction spectrum analysis showed LF was increased and HF was reduced. Conclusion (1) The regulation of the autonomic nervous imbalance appeared earlier than the clinical symptoms. (2) The reduction of HRV after myocardial infarction reflected a pathological state that the vagus nerve activity declined and the sympathetic nervous activity was dominant.