He presented to urgent care and was found to be in wide complex tachycardia at the rate of about 200 bpm (Figure 1). The patient was given diltiazem intravenously and converted to atrial flutter ...

A narrow complex tachycardia results with P wave morphologies that are different than normal sinus P waves. The QRS complex can be wide if aberrancy is present (ie, right or left bundle branch ...

Atrioventricular nodal reentry tachycardia, a form of supraventricular tachycardia, is the most common narrow-complex tachycardic arrhythmia in healthy individuals and only second to atrial ...