Yu.V. Zinchenko Influence of antiarrhythmic therapy on efficacy of electric cardiac stimulation cardioversion in the patients with atrial flutter and ECG FF interval less than 220 ms.

We performed transesophageal electric cardiac stimulations (TEECS) in order to restore sinus rhythm in 69 patients with isolated non-valvular atrial flutter with ECG FF interval 180–219 ms due to ischemic heart
disease (n=37) and myocardial fibrosis (n=32). Arterial hypertension was diagnosed in 34 (49.3 %) patients. Mean arrhythmic anamnesis constituted 3.1 years, with mean present episode duration of 14.1±2.1 days. In
order to evaluate the role of preliminary antiarrhythmic therapy (AAT) all patients were divided into two groups: in group 1 (n=32) cardioversion was conducted without preliminary AAT, in group 2 (n=37) patients were
administered antiarrhythmic medications (AAM): amiodarone (70.3 %), its combinations with other AAM (16.2 %), AAM of class I (Vaughan Williams) (5.4 %) and their combinations with atrioventricular conduction
blockers (8.1 %). Efficacy of TEECS constituted 96.9 % in the patients of group 1 and 100 % in the patients of group 2 (р>0,05). Thus, administration of AAM before cardioversion in the patients with such frequency
characteristics is not justified.

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