Estimation of the QT/RR hysteresis lag
Estimation of the QT/RR hysteresis lag
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DOI：
10.1016/j.jelectrocard.2003.09.056
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发表时间：
2003-01-01
影响因子：
1.3
通讯作者：
Malik, M
中科院分区：
文献类型：
--
作者：
Pueyo, E;Smetana, P;Malik, M
通过考虑RR间期的加权平均值来评价QT间期对心率(HR)变化的适应过程，以表征先前心脏周期的影响。分别为每个患者得出最佳适应模式，并随后计算QT/RR滞后的几个描述符。这些参数的值表明QT对HR变化的适应是高度个体化的，因此，任何概括性的方法都可能导致不适当的结论。
The process of QT interval adaptation to heart rate (HR) changes was evaluated by considering weighted averages of RR intervals to characterize the influence of previous cardiac cycles. An optimum adaptation pattern was individually derived for each patient and several descriptors of the QT/RR hysteresis were subsequently calculated. The values of these parameters showed that the QT adaptation to HR changes is highly individual and, consequently, any generalized approach may lead to inappropriate conclusions.