Acidosis slows electrical conduction through the atrio-ventricular node

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Acidosis slows electrical conduction through the atrio-ventricular node

Acidosis affects the mechanical and electrical activity of mammalian hearts but comparatively little is known about its effects on the function of the atrio-ventricular node (AVN). In this study, the electrical activity of the epicardial surface of the left ventricle of isolated Langendorff-perfused rabbit hearts was examined using optical methods. Perfusion with hypercapnic Tyrode's solution (...

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Atrio-ventricular conduction following radiofrequency ablation for atrio-ventricular node reentry tachycardia in children.

AIMS The study was designed to assess atrio-ventricular (AV) conduction with non-invasive methods at least 1 year after radiofrequency ablation (RFA) of the slow pathway for AV node reentry tachycardia. METHODS AND RESULTS Medical records of all patients who underwent RFA before their 18th birthday were reviewed. Patients were brought back for clinical evaluation, an electrocardiogram, an exe...

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Upper atrio-ventricular nodal beats precipitated by ventricular extrasystoles with retrograde conduction.

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Conduction abnormalities are frequently associated with cardiac disease, though the mechanisms underlying the commonly associated increases in PQ interval are not known. This study uses a chronic left ventricular (LV) apex myocardial infarction (MI) model in the rabbit to create significant left ventricular dysfunction (LVD) 8weeks post-MI. In vivo studies established that the PQ interval incre...

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ژورنال

عنوان ژورنال: Frontiers in Physiology

سال: 2014

ISSN: 1664-042X

DOI: 10.3389/fphys.2014.00233