[First experience of clinical use of new class III antiarrhythmic agent niferidil in patients with persistent atrial fibrillation and flutter].

The aim of the study was to evaluate the efficacy and safety of administered intravenously niferidil in doses 10, 20 and 30 mkg per kg in patients with persistent atrial fibrillation (AF) and flutter (AFL) for pharmacological cardioversion. The study included 30 patients (22 male) with persistent AF (n = 28) and AFL (n = 2) without structural heart diseases with median arrhythmia duration 6.1 +/- 4.

[The efficacy and safety of nibentan for pharmacological cardioversion in patients with persistent atrial fibrillation and flutter: the role of dose limitation and magnesium sulfate administration].

The aim of the study was to evaluate the influence of magnesium sulfate on the efficacy and safety of pharmacological cardioversion with nibentan (NB) in doses up to 0,125 mg/kg in patients with persistent atrial fibrillation (AF) and flutter (AFL). Calculated dose of NB was 0.125 mg/kg.