Ventricular Arrhythmia ECG 22

1. Ventricular tachycardia

As always, this is a challenge to see if this wide-complex tachycardia is ventricular tachycardia or "SVT with aberrancy". There is indeed AV dissociation present best seen in lead V2 on this ECG favoring the diagnosis of ventricular tachycardia. There is a left bundle branch block pattern, no QRS concordance and the RS is < 100 ms. Looking at the other Brugada criteria for ventricular tachycardia with the pattern is left bundle, we do not see a wide R wave in lead V1 or a QS in lead V6. The onset of the QRS to the peak of the QS or S is not > 60 ms, however it does not matter if the morphology criteria are met since AV dissociation is present, giving the diagnosis of ventricular tachycardia.

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