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Asymmetry of the Variability of Heart Rate and Conduction Time Between Atria and Ventricles

机译：心房和心室之间的心率和传导时间变化的不对称性

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Background: ?Heart rate asymmetry is caused by an unequal contribution of heart rate decelerations and accelerations to heart rate variability. This study evaluates the asymmetric properties of the variability of the AA, HH, VV, AH and HV intervals. Methods and Results: ?We recorded 50 1-min intracardiac ECG tracings from 10 patients (18–66 years old; 8 females) during a routine electrophysiological study. Standard descriptors of variance asymmetry were calculated for all intervals. Nonparametric tests were used for statistical comparisons. The prolongations of VV (P=0.0297), AH (P=0.0133) and HV (P=0.0004) intervals contributed significantly more than their shortenings to their short-term variance. The proportion of recordings with a larger contribution of prolongations than shortenings was significantly different from random for VV (0.66, P=0.0328), AH (0.68, P=0.0154) HV (0.74, P=0.0009). Conclusions: ?In addition to heart rate asymmetry (VV interval), the conduction from the atria, through the atrioventricular node, His-Purkinje system to ventricles shows asymmetric properties in 1-min tracings.??( Circ J ?2013; 77: 2904–2911)
机译：背景：？心率不对称是由心率减速和加速度对心率变异性的不平等贡献所引起的。这项研究评估了AA，HH，VV，AH和HV区间的变异性的不对称特性。方法和结果：在常规的电生理研究中，我们记录了来自10例患者（18-66岁; 8名女性）的50次1分钟心内电图描记。计算所有间隔的方差不对称性的标准描述符。非参数检验用于统计比较。 VV（P = 0.0297），AH（P = 0.0133）和HV（P = 0.0004）间隔的延长对短期方差的贡献远大于其缩短。 VV（0.66，P = 0.0328），AH（0.68，P = 0.0154）HV（0.74，P = 0.0009）的录音比例在延长时间上比起起酥油作用更大。结论：除了心率不对称性（VV间隔）外，从心房到房室结，His-Purkinje系统到心室的传导在1分钟内也显示出不对称特性。（Circ J，2013; 77： 2904–2911）

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