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Ventricular arrhythmias in apparently healthy subjects
L Jordaens1, R Tavernier, J Kazmierczak
1Department of Cardiology, University Hospital Ghent, Belgium.
Pacing and Clinical Electrophysiology : PACE
|November 14, 1997
Summary
Serious arrhythmias can occur in seemingly healthy hearts, often linked to genetic disorders affecting heart repolarization or autonomic function. Identifying these conditions is crucial for managing ventricular arrhythmias and ventricular fibrillation.
Area of Science:
- Cardiology
- Electrophysiology
- Genetics
Background:
- The normal heart is generally not considered a predisposition to serious arrhythmias.
- Emerging evidence links specific conditions to short-lasting ventricular arrhythmias.
- Idiopathic ventricular tachycardia (VT) and ventricular fibrillation (VF) can occur in individuals without apparent heart disease.
Purpose of the Study:
- To explore the association between certain conditions and ventricular arrhythmias.
- To investigate the background of idiopathic VT and VF.
- To highlight the potential genetic basis and diagnostic approaches for these arrhythmias.
Main Methods:
- Review of current understanding of cardiac arrhythmias.
- Analysis of cases involving idiopathic VT and VF.
- Focus on identifying underlying genetic factors and physiological abnormalities.
Main Results:
- Several conditions are recognized as triggers for short-lasting ventricular arrhythmias.
- Idiopathic VT may occur with a compromised heart, though causality is unclear.
- Idiopathic VF can manifest in individuals with no apparent cardiac disease, suggesting underlying genetic disorders.
Conclusions:
- Complex electrical abnormalities in the heart, potentially genetic, underlie some arrhythmias.
- Abnormal repolarization and disturbed autonomic function are key features of these syndromes.
- Appropriate diagnostic techniques are essential for recognizing and managing these arrhythmia syndromes.