Asymmetry of the variability of heart rate and conduction time between atria and ventricles
| Autor: | Przemysław Guzik, Adrian Gwizdała, Krzysztof Błaszyk, Jaroslaw Piskorski, Michal Wasniewski, Bartosz Zuchowski, Andrzej Wykretowicz, Wojciech Seniuk |
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| Rok vydání: | 2013 |
| Předmět: |
Adult
Male medicine.medical_specialty Adolescent media_common.quotation_subject Heart Ventricles Asymmetry Intracardiac injection Electrocardiography Heart Conduction System Heart Rate Internal medicine Heart rate medicine Heart rate variability Humans Ventricular Function Heart Atria media_common Aged business.industry General Medicine Middle Aged Atrial Function Atrioventricular node Electrophysiology medicine.anatomical_structure Cardiology Female Cardiology and Cardiovascular Medicine business Conduction time |
| Zdroj: | Circulation journal : official journal of the Japanese Circulation Society. 77(12) |
| ISSN: | 1347-4820 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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