Related Experiment Video
Updated: May 2, 2026

Catheter Ablation in Combination With Left Atrial Appendage Closure for Atrial Fibrillation
Published on: February 26, 2013
Refractory atrial fibrillation effectively treated with ranolazine
Aditi Vaishnav1, Avani Vaishnav1, Yash Lokhandwala2
1Medical Student, Dr. D.Y. Patil Medical College, Navi Mumbai, India.
Ranolazine offers a new treatment option for patients with atrial fibrillation refractory to amiodarone. This medication selectively targets sodium channels, successfully managing highly symptomatic cases.
Area of Science:
- Cardiology
- Electrophysiology
- Pharmacology
Background:
- Atrial fibrillation is a common cardiac arrhythmia requiring effective management.
- Current therapies focus on rhythm and rate control medications.
Observation:
- Amiodarone-refractory atrial fibrillation presents significant management challenges.
- Two highly symptomatic patients with refractory atrial fibrillation were treated.
Findings:
- Ranolazine, a selective Na+ channel blocker, was administered.
- This approach successfully delayed atrial depolarization and managed symptoms.
Implications:
- Ranolazine represents a potential novel therapeutic strategy for difficult-to-treat atrial fibrillation.
- Further research into ranolazine's efficacy and safety in larger cohorts is warranted.
Related Concept Videos
Antianginal Drugs: Calcium Channel Blockers and Ranolazine
CCBs, a diverse class that includes dihydropyridines (nifedipine) and diphenylalkylamines (verapamil and diltiazem), exert their effect by blocking calcium channels in cardiac and smooth muscle cells. This...
Dysrhythmias VI: Management of Dysrhythmias
Antiarrhythmic Drugs: Class III Agents as Potassium Channel Blockers
Antiarrhythmic Drugs: Class IV Agents as Calcium Channel Blockers
Verapamil, a calcium channel blocker, inhibits calcium movement across myocardial cell membranes and vascular smooth muscle. This results in the dilation of coronary and...
ECG Interpretation of Arrhythmias II: Atrial, Junctional and Ventricular Arrhythmias
Antiarrhythmic Drugs: Class II Agents as β-Adrenergic Blockers

