Ventricular fibrillation EKG examples
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]
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EKG examples
The EKG below shows three panels which are continuous and represent the testing of a Medronic model 7219 defibrillator. The channels are a surface EKG lead, a ventricular intra-cardiac recording and a marker channel from the device.
The first panel shows rapid paced ventricular beats followed by a low energy shock which induces ventricular fibrillation. The shock is not on the T wave.
Copyleft image obtained courtesy of ECGpedia, http://en.ecgpedia.org/wiki/File:E00031731.jpg
The second EKG of the panel below shows no identifiable QRS complexes and P waves, bizarre waveform depicting ventricular fibrillation. Note the readings of the marker channel.
Copyleft image obtained courtesy of ECGpedia, http://en.ecgpedia.org/wiki/File:E00031732.jpg
The last EKG of the panel below shows the termination of the ventricular fibrillation with a 20 joule shock and then ventricular pacing. Note the ST elevation of the paced beats.
Copyleft image obtained courtesy of ECGpedia, http://en.ecgpedia.org/wiki/File:E00031733.jpg
