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 ...

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

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 physical examination revealed an irregular cardiac rhythm and a blood pressure of 92/58 mm Hg. The medical team performed an initial 12-lead ECG, which showed a wide complex tachycardia ...

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.

This wide QRS complex tachycardia has a typical left bundle branch block pattern, but two things give the clue that this is ventricular tachycardia. There is a fusion beat (second from left ...

As seen, there are P waves before each QRS complex ... are irregularly irregular. Occasional P waves are nonconducted (*). Multifocal atrial rhythm and multifocal atrial tachycardia are ...

Geng and team described findings of the ECG performed upon her presentation in the emergency department as "a regular, relatively narrow, wide QRS complex tachycardia at a rate of 177/min ...