Discussion
The function of a defibrillator is to
Answer: A
A defibrillator's function is to restore normal heart rhythm.
In ventricular fibrillation or pulseless ventricular tachycardia the heart muscle fires chaotically and pumps no blood. A defibrillator passes a brief high-energy shock (typically 120-200 J biphasic) through the chest. This depolarises a critical mass of the myocardium at once, ending the chaotic activity so that the SA node can take over again.
Defibrillators often include an ECG monitor to decide when to shock, but measuring the ECG is not their function. Recording EEG is a different instrument, and muscle stimulation is done with low-energy stimulators.
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