THE INTRAVENOUS administration of quinidine has not been accepted generally because of serious reactions following its use by this route.1 Although intravenous quinidine preparations are known to be effective in terminating paroxysmal ventricular tachycardia,2 their use has been delayed because serious sideeffects have occurred when they have been given for this purpose.3 There are few reports describing its use in a significant number of attacks of ventricular tachycardia. Hepburn and Rykert2g recorded nine instances, and normal sinus rhythm was restored in eight. Recently Armbrust and Levine,2a in analyzing 107 cases