What is the potential for failure that exists for a cardioversion?

Cardioversion: Well... Potential for failure is that it may not succeed in restoring a normal rhythm. Success rates depend on many factors and are best discussed with your personal physician who has access to all your health records...

Depends on the cause: The success rate for elective cardioversion depends on how long the pt has been in atrial fibrillation (af), the cause of the af, the size of the heart chambers, and medications. Talk to your doctor about the procedure and the likelihood of success.