The three irregularly irregular rhythms are atrial fibrillation ... and ventricular tachycardia. Treat a wide-complex tachycardia like ventricular tachycardia until proven otherwise.

Five days before the development of tachycardia ... the underlying rhythm is less clear but is regularly irregular; the QRS complex is wide and more difficult to separate from the ST segment.

Adenosine blocks the atrioventricular node and is useful in distinguishing among supraventricular tachycardias but should not be given in the case of irregular wide-complex tachycardias ...

This ECG (Figure 1), recorded in the emergency room, shows a wide complex tachycardia at 205 bpm. Wide complex tachycardias are more likely to be ventricular tachycardia (VT) than supraventricular ...

a wide complex may represent ventricular tachycardia or SVT with aberrancy. Second, if the QRS complex is narrow, assess whether the rhythm is regular or irregular. An irregular rhythm generally ...

The team explained that the ECG at admission showed a narrow QRS complex rhythm (sinus rhythm) in lead II, and a wide QRS complex tachycardia ... i.e., small regular or irregular peaks evident ...

This ECG shows a wide-complex tachycardia in a right bundle branch block pattern going quite fast (heart rate about 150 BPM). Note the morphology of the QRS complex in lead V6. There is a RS ...

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 ...

The first 3-lead rhythm ECG taken on presentation showed salvos of wide QRS complex tachycardia that terminated spontaneously, with several sinus rhythm beats between salvos, the authors noted.