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Wide-complex tachycardia that didn’t follow the rules

Dr. Smith's ECG Blog

Although the emergency physician (along with an APRN and an RN) had not seen any alterations in the rhythm after adenosine was pushed, a paper recording of the episode was subsequently unearthed. The WCT is interrupted by a series of variable-morphology QRS complexes, with atrial flutter waves note in II, III, and aVF.