...活动间变异的比率，基于平均数和总体变异，衡量静息-活动节律与授时因子的协调程 度[ 8]; (2)昼夜变异性(intradaily variability, IV): 用于评价节律的破碎性，即静息和活动之间转换的频率，是基于每小时活动数值，反映相对较长时间的静息和...
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目的研究阻塞性睡眠呼吸暂停综合征（OSAS）患者心率变异性（HRV）昼夜变化，探讨利用HRV指标筛选OSAS的效果。
Objective To investigate daytime and nighttime variation of heart rate variability(HRV)in patients with obstructive sleep apnea syndrome(OSAS), and to evaluate the screening capacity of HRV.
结论：(1)EH患者血压变异增大，昼夜波动节律消失，心率变异性降低，QT变异度昼夜无显著差异。
Conclusion: (1) in EH patients ABPV were increased, HRV were reduced, the rhythm of blood pressure were disappeared, no significant difference was found between daytime and nighttime QTv.
目的观察比索洛尔对原发性高血压(EH)左室肥厚(LVH)与心率变异性(HRV)及血压昼夜节律异常的影响。
Objective To study the Effects of Bisoprolol on essential hypertensive (EH) left ventricular hypertrophy (LVH) and heart rate variability (HRV) with abnormal circadian rhythm of blood pressure.
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