View source for Template:Tachycardia (wide) DDX

===[[Wide-complex tachycardia]]===
''Assume any wide-complex tachycardia is [[ventricular tachycardia]] until proven otherwise (it is safer to incorrectly assume a ventricular dysrhythmia than supraventricular tachycardia with abberancy)''
*Regular
**Monomorphic [[ventricular tachycardia]]
**[[PSVT]] with aberrant conduction:
***[[PSVT]] with [[bundle branch block]]^
***[[PSVT]] with accessory pathway
***[[Atrial flutter]] with [[bundle branch block]]^
**[[Sinus tachycardia]] with [[bundle branch block]]^
**[[Accelerated idioventricular rhythm]] (consider if less than or ~120 bpm) 
**Metabolic
***[[Hyperkalemia]]
***[[Digoxin toxicity]]
***Severe [[metabolic acidosis]]
*Irregular
**[[Atrial fibrillation (main)|Atrial fibrillation]]/[[atrial flutter]] with variable AV conduction AND [[bundle branch block]]^
**[[Atrial fibrillation (main)|Atrial fibrillation]]/[[atrial flutter]] with variable AV conduction AND accessory pathway (e.g. [[WPW]])
**[[Atrial fibrillation (main)|Atrial fibrillation]] + [[hyperkalemia]]
**[[Polymorphic ventricular tachycardia]]
***[[Torsades de pointes]]
***[[Nonsustained ventricular tachycardia]]
^Fixed or rate-related