Tachycardia - Differential Diagnosis Framework
Narrow-Complex:
 • Regular: Sinus Tachycardia, Junctional Tachycardia, Atrial Tachycardia, Atrial Flutter, AVRT (ie. WPW), AVnRT (ie SVT)
 • Irregular: Atrial Fibrillation, Multifocal Atrial Tachycardia (MAT), Atrial Flutter (w/ variable block)
Regular-Complex: 
 • Ventricular Tachycardia, Antidromic AVRT, SVT w/aberrancy
 • Irregular: Polymorphic VT (ie Torsades, VF), Any irregular SVT w/ aberrancy

- Mark Ramzy, DO, EMT-P @MRamzyDO

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