Cardioversion of atrial fibrillation to sinus rhythm using quinidine given in rapid administration

A rapid method using quinidine sulphate for the cardioversion of atrial fibrillation is presented. Intensive administration of the drug allows the use of lower doses (mean dose 1.159 g quinidine sulphate), with high convertibility rate (69.76%); 7 hours after the start of the procedure 94 per cent of the patients were already in sinus rhythm. The short duration of this procedure allows careful monitorization of the patients.