Dependence of the Atrioventricular Conduction Time on the Conduction through the Atrioventricular Node and His-Purkinje System

The electrical depolarization of the heart passes through various structures of the cardiac conduction system, which modify its conduction to different extents. In this study, we investigated the relationship between the atrioventricular conduction time (AV interval) and its contributors, the atriov...

Full description

Saved in:
Bibliographic Details
Published in:Journal of clinical medicine 2023-02, Vol.12 (4), p.1330
Main Authors: Żuchowski, Bartosz, Błaszyk, Krzysztof, Piskorski, Jarosław, Wykrętowicz, Andrzej, Guzik, Przemysław
Format: Article
Language:English
Subjects:
Ablation
Atrioventricular node
Cardiac arrhythmia
Catheters
Clinical medicine
Gender differences
Health aspects
Heart rate
Patients
Physiological aspects
Purkinje fibers
Regression analysis
Sinuses
Statistical analysis
Women
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The electrical depolarization of the heart passes through various structures of the cardiac conduction system, which modify its conduction to different extents. In this study, we investigated the relationship between the atrioventricular conduction time (AV interval) and its contributors, the atrioventricular node (AVN) and the His-Purkinje system (HPS), as represented by the AH and HV intervals, respectively. We also compared sex differences in these intervals and their relations. Resting intracardiac tracings lasting 5 min were obtained from 64 patients (33 women) during an invasive electrophysiological study. The aforementioned intervals were measured for all consecutive beats. The mean AH interval was 85.9 ms, HV 43.7 ms, and AV 129.6 ms. Men had longer AH (80.0 vs. 65.9 ms), HV (38.4 vs. 35.3 ms), and AV intervals (124.7 vs. 108.5 ms) than women. The AV intervals were linearly correlated with AH intervals in all patients (r = 0.65). No significant correlation was found between AV and HV intervals in all patients (r = 0.05). There were no sex differences in these associations. Our results suggest that the atrioventricular conduction time depends mainly on the conduction through the AVN and less on the HPS. These relations are similar in both sexes, although men had longer conduction times through the AVN, HPS, and total atrioventricular conduction time.
ISSN:2077-0383
2077-0383
DOI:10.3390/jcm12041330