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心率和心率变异性

来源: 2019/12/19 浏览量:38 关键词: 心率 心率变异 三肖选一肖期期准

心率:
      心率(HR)是指正常人安静状态下每分钟心跳的次数,也叫安静心率,一般为60~100次/分,可因年龄、性别或其他生理因素产生个体差异。一般来说,年龄越小,心率越快,老年人心跳比年轻人慢,女性的心率比同龄男性快,这些都是正常的生理现象。安静状态下,成人正常心率为60~100次/分钟,理想心率应为55~70次/分钟(运动员的心率较普通成人偏慢,一般为50次/分钟左右)。

心率变异性:
      心率变异性(HRV)是指逐次心跳周期差异的变化情况,它含有神经体液因素对心血管系统调节的信息,从而判断其对心血管等疾病的病情及预防,可能是预测心脏性猝死和心律失常性事件的一个有价值的指标。

HR和HRV有什么区别?

心率(HR)以每分钟节拍数来衡量。它不需要确切的时间 ,只是特定时间段内节拍的平均值。例如,每分钟60次HR可能意味着每秒1次跳动,或者可能意味着每0.5秒,1.5秒,0.5秒,1.5秒等平均有1次跳动。心率测量是一项简单的测试,由于测量技术要求低,已经存在了几千年。通常,低HR表示休息,而高HR表示运动或运动。心率关注每分钟的平均心跳次数,而心率变异性(HRV)则测量心脏连续跳动之间的时间(或变异性)的具体变化。节拍之间的时间以毫秒(ms)为单位,称为“R-R间隔”或“节拍间隔(IBI)”。

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何时使用心率(HR)

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何时使用心率变异性(HRV)

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