Resumption of dormant accessory pathway conduction with adenosine administration: a simple intervention to ensure successful accessory pathway ablation.

A 19-year-old with supraventricular tachycardia was referred for an electrophysiology study. Delta waves were absent and the HV interval 36 ms. Orthodromic atrioventricular reentrant tachycardia utilizing a left-septal accessory pathway (AP) was diagnosed and radiofrequency energy delivered at the site of earliest retrograde atrial …