Adenosine

Adenosine sensitive ventricular tachycardia occurs in structurally normal hearts and arises from the right ventricular outflow tract (pulmonary infundibulum). This gives it a left bundle branch block morphology on the 12-lead ECG.

Adenosine is a short-acting endogenous molecule that is a purine nucleoside. The half-life is 6 seconds. Adenosine receptor activation results in multiple different actions depending on the location.

Regadenoson is a short-acting molecule that is related to the purine nucleoside adenosine and acts by stimulating adenosine receptors.