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隐性心肌缺血发作前心率变异性心率变异性(heartratevariability,HRV)的功率谱分析结果已被视为自主神经活性的一项非侵入性参数。其低频(LF)成分反映在副交感神经调节下的交感活性,高频(HF)成分反映纯粹的副交感活性;LF/HF比值...
Power spectrum analysis of heart rate variability heart rate variability (HRV) prior to occult myocardial ischemia has been considered as a noninvasive parameter of autonomic activity. Its low frequency (LF) component reflects sympathetic activity under parasympathetic regulation, and high frequency (HF) components reflect purely parasympathetic activity; the LF / HF ratio ...