Ventricular fibrillation EKG examples
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]
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Ventricular fibrillation EKG examples
Shown below is an EKG image of ventricular fibrillation showing irregular heart rhythm, heart rate of more than 300 per minute, QRS duration unrecognizable and absent P waves.
Shown below is an EKG image of ventricular fibrillation showing irregular heart rhythm, heart rate of more than 300 per minute, QRS duration unrecognizable and absent P waves.
Shown below is an EKG image of ventricular fibrillation showing irregular heart rhythm, heart rate of more than 300 per minute, QRS duration unrecognizable and absent P waves.
Shown below is an example of sinus rhythm converting into ventricular fibrillation wave pattern of irregular rhythm and unrecognizable QRS and P waves.
Shown below three panels 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 VF. The shock is not on the T wave.
The second panel below shows the VF, note the readings of the marker channel.
Shown below last panel shows the termination of the VF with a 20 joule shock and then ventricular pacing. Note the ST elevation of the paced beats.
Shown below is an EKG monitor strip recorded during the testing of a defibrillator in a middle aged woman with ventricular tachycardia and a structurally normal heart. The tracing was made during the implantation of the defibrillator and shows induction of VF with paced beats and a low energy T wave shock, termination of the VF by the device and then the return to sinus rhythm.
Note the QT interval in this patient of 500 ms which is long for the heart rate of 60/min.
Sources
Copyleft images obtained courtesy of ECGpedia, http://en.ecgpedia.org/index.php?title=Special:NewFiles&offset=&limit=500