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[Treatment of choice and long-term prognosis for ventricular arrhythmias]
1Department of Cardiovascular Diseases, Medical Research Institute, Tokyo Medical and Dental University.
Insights
Preventing sudden cardiac death in ventricular arrhythmias involves assessing heart disease and dysfunction. Electrophysiology testing guides antiarrhythmic drugs, with signal-averaged ECG as a key screening tool.
Area of Science:
- Cardiology
- Electrophysiology
Context:
- Ventricular arrhythmias pose a risk of sudden cardiac death and recurrent life-threatening events.
- Long-term patient prognosis is significantly influenced by the presence of organic heart disease and the degree of cardiac dysfunction.
Purpose:
- To describe the treatment of choice and long-term prognosis for patients with ventricular arrhythmias.
- To outline strategies for preventing sudden cardiac death and recurrent life-threatening arrhythmias.
Summary:
- Electrophysiological testing, guided by antiarrhythmic drug therapy, is the most effective method for predicting and preventing life-threatening arrhythmias.
- Signal-averaged electrocardiography is proposed as a non-invasive screening method to select patients for electrophysiological testing.
- Catheter ablation and implantable cardioverter-defibrillators are current treatment options for patients with limitations in antiarrhythmic drug therapy.
- Managing the underlying cardiac condition alongside antiarrhythmic drugs is crucial for long-term prognosis.
Impact:
- Improved patient selection for invasive procedures through non-invasive screening.
- Enhanced therapeutic strategies for managing ventricular arrhythmias and reducing mortality.
- Provides a framework for optimizing long-term care and outcomes in patients with ventricular arrhythmias.
Abstract:
Treatment of choice and long-term prognosis of the patients with ventricular arrhythmias are described in terms of prevention of sudden cardiac death and/or recurrence of life-threatening arrhythmias(ventricular tachycardia and ventricular fibrillation). 1) As to the long-term prognosis of ventricular tachyarrhythmias, presence of organic heart disease and degree of cardiac dysfunction are major determining factors. 2) The prognosis of patients with ventricular arrhythmias depends on how sudden cardiac death and life-threatening arrhythmias can be prevented. Among various methods, the electrophysiological test and its guided-therapy for antiarrhythmic drugs are now believed to be the most effective method for the prediction and prevention of the life-threatening events. We propose that the signal averaged electrocardiography is the best screening method as non-invasive approach for the selection of patients undergoing the electrophysiological test. 3) There are still certain limitations as to the prediction of sudden cardiac death and/or prevention of recurrent life-threatening arrhythmias by antiarrhythmic drug treatments in the certain numbers of patients depending on their basal cardiac disease and functional impairment. At present, catheter ablation procedure and implantable cardioverter defibrillator are the choice of the treatment in these cases. 4) In addition to conventional antiarrhythmic drugs, the treatment for the basal cardiac condition is mandatory for the long-term prognosis in the patients with ventricular arrhythmias.