Hello, I'm an expert in the field of cardiology with a focus on arrhythmia management. When a patient experiences a life-threatening abnormal heart rhythm, such as ventricular fibrillation or pulseless ventricular tachycardia, a medical procedure called defibrillation is used to restore a normal rhythm. Here's how it's typically done: 1. Preparation: The patient is connected to an electrocardiogram (ECG) to confirm the abnormal rhythm. 2. Delivery of Shock: An automated external defibrillator (AED) or a manual defibrillator is used. The AED will analyze the heart rhythm and advise if a shock is needed. If using a manual defibrillator, a healthcare professional will make this determination. 3. Charging the Defibrillator: The device is charged to a specific energy level, which is typically biphasic and weighted to the patient's condition. 4. Clearing the Person: Everyone must stand clear of the patient to avoid interference with the electrical current. 5. Placement of Pads: Electrode pads are placed on the patient's bare chest, usually in an anterior-lateral position. 6. Discharging the Shock: The healthcare provider will press the "Shock" button to deliver the electrical current to the heart. 7. Post-Shock Care: The patient's rhythm and vital signs are immediately checked, and if necessary, CPR is resumed. read more >>

Doctors also restore regular rhythms by sending an electrical shock to the heart. This is called electrical cardioversion. Arrhythmias may prevent blood from circulating properly to your heart and brain. Most often, doctors use cardioversion to treat a fast, irregular heart rhythm called atrial fibrillation.read more >>