It means that the HRV is greater in control conditions than in abnormal conditions.
而在病理条件下心率变异性小，呈周期性趋势。
There was significant relation between HRV and BP loading, HRV and ECG abnormality.
HRV降低与血压负荷升高呈明显正相关，与心电异常也呈明显正相关。
Obtain pre-therapeutic HRV baseline reading - reveals the current status of the ANS.
预先取得治疗心率基线读揭示现状的答复。
HRV infection is the most important risk factor for asthma exacerbation in these patients.
HRV感染是最主要的造成哮喘恶化的因素。
Objective To study characteristics of heart rate variability (HRV) in the normal newborns.
目的探讨正常新生儿心率变异性(HRV)的特点。
It showed that there were changes in the dynamics of HRV and the modulations of cardiovascular system.
说明HRV的动力学特征有改变，心血管系统的调节功能有改变。
Study of nonlinear dynamics analysis means for HRV has wide clinical application and study foreground.
HRV的非线性动力学分析方法的应用有着广阔的临床应用和研究前景。
Objective To use heart rate variations (HRV) in analysing and judging critically ill patient's prognosis.
目的了解危重症患者心率变异(HRV)，分析其对预后的指导价值。
Conclusion UPOs can be used to characterize the dynamics of HRV and is a potential method to analyze HRV.
结论非稳定周期轨道可以刻划hrv的动力学性质，是分析HRV的潜在的方法。
Objective To study the effect of music relaxation therapy on heart rate variability (HRV) in hypertension.
目的探讨音乐松弛疗法对高血压病心率变异性的影响作用。
The relationship between the sleep stage and the ultra-low frequency components of HRV is also considered.
在特征提取中还考虑了HRV中超低频分量和睡眠的关系。
ConclusionsThe uniform respiration frequency affects not only high-frequency HRV, but also low-frequency HRV.
结论均匀呼吸的调息频率改变不仅影响HRV的高频段，而且还会影响HRV的低频段。
Objective To assess the mechanism of desflurane-mediated sympathetic activation by heart rate variability (HRV).
目的用心率变异性分析探讨地氟醚交感兴奋作用的发生机制。
HRV is the better index on assessing autonomic nerve change, which can be used to guide clinical treatment of XS.
心率变异分析可作为观察x综合征自主神经变化和指导临床治疗的指标。
Objective To study the changes of heart rate variability (HRV) in elderly patients with sleep apnea syndrome (OSAS).
目的探讨老年睡眠呼吸暂停综合征(OSAS)患者心率变异性特点及可能的发病机制。
Objective:To explore the correlation between the differentiation type of diabetes(DTD)and the heart rate variance(HRV).
目的：探讨糖尿病不同证型的心率变异（HRV）情况。
Heart rate variability (HRV) has been proposed as a noninvasive means to monitor the autonomic nervous activity of the heart.
心率变异性(HRV)分析是反映支配心脏自主神经活性的一项无创性指标。
The author herein reviews the physiological background, the measuring methods and the application in clinic and sports of HRV.
笔者从HRV的生理基础，测定方法，临床和体育运动中的应用几个方面综合评述了这一方法的研究现状。
The intention of this guide is to help you get started optimizing your health and performance with Heart Rate Variability (HRV).
这份指南的目的是帮助你开始应用心率变异性(HRV)来优化自己的健康和表现。
Objective: To investigate the relationship of chronic congestive heart failure (CHF) and heart rate variability (HRV) in the elderly.
目的：探讨老年患者慢性充血性心衰(CHF)与心率变异性(HRV)的关系。
The differences in each frequency domain parameter of HRV among the groups and between the normal group and other groups were analyzed.
分析HRV各频谱参数在糖尿病各组间的差异及与正常人群间的差异。
Objective To investigate the change of Chronotropic action and heart rate variability (HRV) in patients with essential hypertension (EH).
目的探讨原发性高血压(EH)患者变时性功能与心率变异性(HRV)的变化。
Objective: To investigate the effects of midazolam, propofol and both drugs co induction induced sedation on heart rate variability (HRV).
目的：观察心率变异性(HRV)在咪唑安定、异丙酚及其复合镇静时的变化。
Conclusions HR and HRV were useful indicators and could be used in cervical stimulation to evaluate the effect on autonomic nervous system.
结论心率和心率变异性是一项评定颈部手法刺激对自主神经系统效应的有用指标。
Methods Time domain methods of heart rate variability (HRV) tests were performed in 60 patients with liver cirrhosis and 60 normal subjects.
方法对60例肝硬化组和60例正常组进行心率变异性时域分析。
To explore the changes in vegetative nerve function by heart rate variability (HRV) and its clinical applicative value in patients with ACVD.
探讨急性脑血管病（ACVD）患者心率变异性（HRV）所反映的植物神经功能变化及其临床应用价值。
This study mainly explores the characteristics of HRV in Chinese healthy group, and the application of HRV in the healthy and sports practice.
本文着重评述了国内健康人群HRV的特点以及HRV在健康人群及其在体育运动中的应用这几个方面的研究概况。
Objective: To study the influence of left ventricular conformation and function on heart rate variability (HRV) in patients with hypertension.
目的：探讨高血压患者左心室结构和功能对心率变异性(HRV)的影响。
Objective To investigate the relationship between heart rate variability (HRV) and ventricular arrhythmia in patients with coronary heart disease.
目的探讨冠心病患者心律变异性(HRV)与室性心率失常之间的关系。
Therefore, HRV changes brought about by uniform respiration may not reflect the changes of the balance regulation of cardiovascular autonomic nerve.
因此，均匀呼吸调节引起的HRV变化可能不一定完全反映心血管自主神经平衡调节的变化。
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