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[Effect of antiarrhythmic therapy on late potentials]
1First Department of Internal Medicine, Kobe University School of Medicine.
Nihon Rinsho. Japanese Journal of Clinical Medicine
|February 1, 1995
Summary
Antiarrhythmic therapies, including medical treatment, catheter ablation, and surgery, affect ventricular late potentials (LP). While LP changes correlate with some therapy outcomes, their link to sustained ventricular tachycardia (SVT) suppression is unclear.
Area of Science:
- Cardiology
- Electrophysiology
- Medical Treatment
Context:
- Ventricular late potentials (LP) are potential indicators of arrhythmogenic substrates.
- Sustained ventricular tachycardia (SVT) poses a significant risk in cardiac patients.
- Evaluating the impact of antiarrhythmic interventions on electrophysiological markers is crucial for therapeutic assessment.
Purpose:
- To review current data on how antiarrhythmic therapies influence ventricular late potentials (LP).
- To explore the relationship between LP and the efficacy of medical treatment, catheter ablation, and surgery for arrhythmias.
- To assess the correlation between LP and the prevention or modification of sustained ventricular tachycardia (SVT).
Summary:
- Antiarrhythmic therapies demonstrate varied effects on ventricular late potentials (LP).
- No consistent correlation was found between LP and the inducibility or suppression of sustained ventricular tachycardia (SVT).
- Prolongation of SVT cycle length may correlate with increased LP, while LP reduction is observed after successful antiarrhythmic surgery.
Impact:
- Findings inform the understanding of antiarrhythmic therapy mechanisms.
- Highlights the complex and sometimes controversial role of LP in predicting treatment success.
- Suggests LP may be a useful marker for evaluating surgical antiarrhythmic outcomes.