Effect of Adenosine in Termination of Induced Supraventricular Tachycardias and Comparison With Verapamil

The effects of intravenous (IV) adenosine and veraparnil in termination of supraventricular tachycardias (SVT) were compared in 22 patients (total 47 episo de) undergoing an electrophysiologic study. Among these patients in whom SVT was induced by programmed electrical stimulation, lO patients had AV nodal reentrant tachycardia, 9 had overt WPW and 3 had concealed accessory pathways. Adenosine, given at a dose of 6 mg !ed to canversion in ı 9 (86%) patients while in the other 3 patients 12 mg adenosine .was required. Two of these 3 converted to sinus rhythm. Canversion to sin us rhythm occurred in 21 patients (96%) treated w ith aden os ine, and in ı 4 (64%) patients treated with 10 mg IV veraparnil (p