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

  • Guzik Przemyslaw
    Department of Cardiology-Intensive Therapy and Internal Medicine, Poznan University of Medical Sciences
  • Zuchowski Bartosz
    Department of Cardiology-Intensive Therapy and Internal Medicine, Poznan University of Medical Sciences
  • Blaszyk Krzysztof
    Department of Cardiology, Poznan University of Medical Sciences
  • Seniuk Wojciech
    Department of Cardiology, Poznan University of Medical Sciences
  • Wasniewski Michal
    Department of Cardiology, Poznan University of Medical Sciences
  • Gwizdala Adrian
    Department of Cardiology, Poznan University of Medical Sciences
  • Wykretowicz Andrzej
    Department of Cardiology-Intensive Therapy and Internal Medicine, Poznan University of Medical Sciences
  • Piskorski Jaroslaw
    Department of Cardiology-Intensive Therapy and Internal Medicine, Poznan University of Medical Sciences Institute of Physics, University of Zielona Gora

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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)<br>

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  • Circulation Journal

    Circulation Journal 77 (12), 2904-2911, 2013

    一般社団法人 日本循環器学会

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