Depolarize the Pacemaker Cells, Using Physics!
A defibrillator is used to depolarize the pacemaker cells, allowing the sinoatrial node to reestablish a normal rhythm. A heart enters ventricular fibrillations and requires 30 amps. In essence, the defibrillator is a discharging capacitor, of C farads, across a patient with a resistance of R ohms. If the defibrillator started at a full charge, emitting 30 amps, how much time elapses before the current drops below 25 amps?
Eq. 1 – Discharge Formula
Subscribe below to receive the MCAT Question of the Day delivered straight to your inbox every morning.
Photo attributed to ScientificRelevance.