What is the function of a defibrillator?

The function of a defibrillator is to restore a normal heartbeat by delivering an electric shock to the heart. This process is crucial in life-threatening situations such as cardiac arrest, where the heart may be beating erratically or not at all. The electric shock provided by the defibrillator helps to reset the heart's electrical system, allowing it to regain a normal rhythm. This rapid intervention is vital for increasing the chances of survival in an emergency situation.

While measuring heart rates, monitoring blood oxygen levels, and assisting in breathing emergencies are important functions in medical care, they do not encompass the primary role of a defibrillator, which specifically focuses on addressing severe arrhythmias and restoring effective heart function through electrical stimulation.