To convert atrial fibrillation or flutter to a normal heart rhythm, your physician may recommend the use of electrical cardioversion. Prior to cardioversion, the patient is administered blood thinners. The patient is then sedated and a strong shock is administered to the heart, disrupting its rhythm. In 95% of the cases, normal rhythm is restored through cardioversion.
Cardioversion may first be attempted through prescriptive medicine. If that fails to alter the heart's rhythm, electrical cardioversion may be used. Of course, there is always a chance that atrial fibrillation will reoccur. Approximately 75% of patients experience a recurrence within 12 to 24 months.