¹ Scientific Research Institute of Cardiology, Tomsk Scientific Centre of Russian Academy of Medical Sciences, Tomsk, Russia;
² Republican Specialized Center of Cardiology, Tashkent, Uzbekistan
*Corresponding author: Bakhrom Jalolov, PhD, Republican Specialized Center of Cardiology. 4 Osie str., 100052, Tashkent, Uzbekistan Tel: 998-71-2373816, 998-97-1568118.Fax: 998-71-2341667 E-mail: firstname.lastname@example.org
Intensive development of treatment methods of supraventricular tachycardia (SVT) caused by accessory atrioventricular junctions is determined by their wide occurrence, refractoriness to antiarrhythmic therapy, high risk of sudden cardiac death from atrial fibrillation (AF). Assumption that AF will disappear after accessory pathway elimination was not confirmed in many studies. Persistence of AF in 30% of young patients after accessory atrioventricular (AV) pathway elimination is one of the important problems in modern cardiology. We studied 220 patients after successful radio-frequency catheter ablation of accessory pathway with or without AF. Duration of occurred palpitation attacks and registered episodes of reciprocal AV tachycardia in patients with AF was longer than in patients without AF. Patients with AF have higher speed of AAVJ conduction, faster abnormal retrograde atria excitation, which causes in atria the second wave of excitation in vulnerable phase of depolarization. An appearance of AF in patients with AAVJ is a result of such junction functioning and its influence on atrial myocardium electrophysiology.
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