Whats The Difference Between Monophasic And Biphasic Defibrillators?
The difference between monophasic (what we have been using for a long time) and biphasic defibrillation is: Monophasic defibrillators deliver current in a single direction. Current flows in a single direction. Current flows from one paddle (or electrode pad) to the other. Biophasic: the current flows first from one direction then the other. Biophasic is believed to cause less myocardial damage
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September 13, 2009 @ 1:04 pm
A monophasic requires more energy (volts) because the shock only travels though the heart once. A Biphasic defibrillator requires less energy because the shock goes through the heart and then bounces back to shock again (it’s is kind of like an echo).
September 13, 2009 @ 4:21 pm
Almost, all AEDs (Automated External Defibrillators) use a monophasic waveforms that send an electical wavefrorm through the heart in one direction. Biphasic AEDs send a shock through the heart in one direction and again in the reverse direction. Biphasic AEDs use less energy than monophasic AEDs – hence they can be smaller.