does cardioversion stop the heart
Cardioversion is performed when your heart is beating ineffectively. It's different from defibrillation, an emergency procedure that's performed when your heart stops or quivers uselessly. Defibrillation delivers more powerful shocks to the heart to correct its rhythm. Cardioversion is usually scheduled in advance but is sometimes done in emergency situations. Cardioversion is usually done with electric shocks, administered through electrodes attached to your chest, while you're sedated.