Description :- Biphasic defibrillator gives bilateral current as to be positive and negative after its electrical energy is discharged. Namely, it conducts electrical current bilaterally. On the first phase, current flows from one electron to the other as it is in monophasic defibrillator. On the second phase, current starts to flow on reverse direction. According to the studies done, it is observed that biphasic waves produce more successful defibrillation with lower energy than monophasic waves and so they are less harmful. In addition, since same results can be obtained with low energy use, some adverse effects such as burns are also reduced.
Monophasic Defibrillator is a device used for defibrillation to turn abnormal ECG rhythms into normal rhythms. When the heart enters ventricular fibrillation, the process of returning it to its normal sinus rhythm by giving adequate amount of external electrical current is called defibrillation, and the device used to produce such electrical current is called monophasic defibrillator. If electrical energy is given in the form of shocks, it will generate stimulation, namely, depolarization of myocardium and systole. The heart should be without pulse in ventricular fibrillation or ventricular tachycardia rhythm to give shock to the heart through a defibrillator.