cardioversion
Procedure to restore normal heart rhythm using electrical shock or medications.
Full Definition
Cardioversion is a medical procedure used to convert abnormal heart rhythms back to normal sinus rhythm, accomplished either through synchronized electrical shock (electrical cardioversion) or antiarrhythmic medications (pharmacological cardioversion). Electrical cardioversion uses direct current synchronized with the R-wave to avoid inducing ventricular fibrillation. It is commonly used for atrial fibrillation, atrial flutter, and supraventricular tachycardia. The procedure typically requires conscious sedation and anticoagulation assessment to prevent thromboembolism. Success rates vary depending on the underlying arrhythmia, duration, and patient factors.
Usage
Usage note: Distinguish from defibrillation, which is unsynchronized and used for life-threatening arrhythmias.
In Context
- "Electrical cardioversion was successfully performed to restore normal sinus rhythm in the patient with persistent atrial fibrillation." — Procedure report
- "Pharmacological cardioversion with amiodarone was attempted prior to electrical cardioversion." — Clinical decision documentation