The doctor listened to the heartbeat of a 6-year-old boy with an irregular rhythm.

Patient's question:

Asymptomatic no medical consultation

Doctor's answer:

When arrhythmia occurs, if it reduces cardiac output, causing shock or near-shock conditions, doctors will use a defibrillator (a medical device that delivers electrical shocks) to deliver electrical shocks to the patient's chest, restoring the heart to its normal rhythm.