Jf. Leclercq et al., DIRECT-CURRENT CARDIOVERSION OF ATRIAL TACHYARRHYTHMIAS UNDER ORAL FLECAINIDE THERAPY, The American journal of cardiology, 80(5), 1997, pp. 645
Results of direct-current cardioversion of 48 patients with atrial arr
hythmia taking oral flecainide were compared with those of 96 control-
matched patients. After completion of 3 shocks, 98% of flecainide pati
ents were converted versus 78% of control patients (p < 0.01). Thus, d
espite an experimental increase in defibrillation threshold, flecainid
e given before cardioversion seems to have a beneficial effect.