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MPCount error: D:\Webshare\Public ced\assets\data\mpcount.text missing! Description of Wave Forms | Victorian Centre for Early Defibrillation

Description of the Wave Forms

The defibrillation process is delivered by either a monophasic or a biphasic waveform (see below).

Monophasic and Biphasic Waveforms

These waveforms can be divided into six types two monophasic and currently four biphasic in general use. The efficiency of these different biphasic waveforms is still being researched. However, all four in clinical trials have proven to be as effective as the better known monophasic waveform. The current research indication are that they may have less side effects than there monophasic counterparts.

The traditional monophasic waveform delivers the defibrillation energy in one direction from positive to the negative electrode, where as the biphasic waveform, as the name suggests delivers this energy in two phase’s one positive and one negative.

The biphasic waveform has reported shorter refractory periods and furthermore, less incident of S-T changes post shock. The biphasic defibrillator has become the dominate type of defibrillator being sold.