Patients with paroxysmal atrial fibrillation

The Role of High-Resolution Electrocardiography in Assessment of Efficacy o f Class IA and III Antiarrhythmic Drugs in Potential of high-resolution ele ctrocardiography for prediction of efficacy of class IA and III antiarrhyth mic drugs was studied in 40 patients with paroxysmal atrial fibrillation of different causes. Twelve patients received quinidine and 18 - amiodarone, Significant reduction of Fi P and Un P duration was observed in those patie nts in whom quinidine was effective while ineffective use of quinidine was associated with increase of these parameters. No consistent changes of para meters of high-resolution electrocardiography were related to effective/ine ffective use of amiodarone.