What is the success rate of cardioversion?

As a medical professional with expertise in cardiology, I can provide you with an overview of the success rates of cardioversion, which is a procedure used to restore the normal rhythm of the heart in patients with certain types of abnormal heart rhythms, known as arrhythmias. The success rate of cardioversion can vary depending on several factors, including the type of arrhythmia, whether it's the first-time procedure or a repeat, the use of antiarrhythmic medications, and the specific technique used (electrical or pharmacological cardioversion). For atrial fibrillation (AFib), which is one of the most common conditions treated with cardioversion, the success rate for electrical cardioversion is relatively high. Studies have shown that the immediate success rate can be as high as 80-90%. However, the recurrence rate is also significant, with about 50% of patients experiencing a return of AFib within a year. For atrial flutter, the success rate is also high, often similar to that of AFib. In the case of ventricular tachycardia, the success rate can be quite variable and depends on the underlying heart condition and the specific circumstances of the patient. It's important to note that the long-term success of cardioversion is influenced by the use of antiarrhythmic drugs, which can help maintain the normal heart rhythm after the procedure. Additionally, lifestyle modifications and addressing any underlying heart disease are crucial for improving the long-term outcomes.

Success Rates for Electrical Cardioversion. Procedural Success: Various studies have reported that electrical cardioversion is over 90 percent effective in helping people return to a normal sinus rhythm during the procedure. However, many people revert back into AFib shortly thereafter.