Are there any side effects for defibrillation of the heart?

First of all, there is no other option for treatment of ventricular fibrillation other than defibrillation. Without defibrillation, the heart continues to be in a state of cardiac arrest and it is difficult to maintain adequate circulation just by chest compressions. So defibrillation is a life saving procedure for which no other options exist. Since defibrillation involves the delivery of a high voltage shock, multiple high voltage shocks can cause some damage to the heart muscle, which can manifest as elevation of heart muscle enzymes in the blood and ST segment elevation on the ECG. Some transient suppression of the cardiac rhythm requiring back up pacing in case of an implantable defibrillator shock are also common. But by and large defibrillation is a safe procedure, which is life saving.

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