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V Fib

ECG Basics: Ventricular Fibrillation Converted With Defibrillation

Sat, 09/06/2014 - 20:48 -- Dawn

A good example of ventricular fibrillation converted by electric defibrillation to what appears to be a sinus rhythm.  There is significant artifact in the post-conversion strip, but the last beat on the strip appears to have a P-QRS-T sequence.

Of course, V Fib presents without pulses, and must be defibrillated as soon as possible.  Best results are achieved by defibrillating a perfused heart, so if there is any delay from onset of V Fib, CPR should be performed to perfuse the heart prior to defibrillation.

ECG Basics: Ventricular Fibrillation

Mon, 11/04/2013 - 14:03 -- Dawn

A good example of ventricular fibrillation.  The patient is pulseless, CPR has been performed, and the ED staff is about to defibrillate.  Characteristics of V Fib are:  a chaotic, wavy baseline without clear P waves, QRS complexes, or T waves.  Baseline artifact (baseline going up and down) can be seen with CPR and other movement of the electrodes on the patient's body as resuscitation efforts are underway.  The patient will ALWAYS be unconscious and pulseless in V Fib.

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