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Sudden death in patients without structural heart disease
Eric F D Wever1, Etienne O Robles de Medina
1Department of Cardiology, Heart Lung Center, Utrecht, The Netherlands. e.wever@antonius.net
Journal of the American College of Cardiology
|April 6, 2004
Summary
Sudden cardiac death can occur in healthy individuals due to "electrical" heart issues. Implantable cardioverter-defibrillators offer the safest treatment for survivors of ventricular tachyarrhythmia.
Area of Science:
- Cardiology
- Electrophysiology
- Sudden Cardiac Death
Background:
- Sudden unexpected cardiac death (SUCD) often affects individuals without identifiable structural heart disease.
- SUCD in young, healthy individuals frequently stems from purely
- electrical
- cardiac abnormalities.
Purpose of the Study:
- To review recognized electrical cardiac abnormalities causing life-threatening events.
- To discuss idiopathic ventricular fibrillation and potential future diagnostic advancements.
- To highlight risk stratification and management for SUCD survivors.
Main Methods:
- Review of distinct electrophysiological abnormalities associated with SUCD.
- Categorization of patients with idiopathic ventricular fibrillation.
- Discussion of current and future diagnostic tools (e.g., MRI, PET, genetic testing).
Main Results:
- Recognized electrical syndromes include Wolff-Parkinson-White, long QT, Brugada, short-coupled torsade de pointes, and catecholamine-induced polymorphic ventricular tachyarrhythmia.
- Idiopathic ventricular fibrillation represents cases without distinct abnormalities, potentially linked to undiscovered genetic/anatomic factors.
- Patients resuscitated from unexplained ventricular tachyarrhythmia are at high risk for recurrence.
Conclusions:
- Long-term prophylactic therapy is indicated for high-risk SUCD survivors.
- The implantable cardioverter-defibrillator (ICD) is the safest and most effective therapy for these patients.
- Future diagnostic tools may redefine idiopathic ventricular fibrillation cases.