[Anti-arrhythmia effectiveness of phosphobion and finoptin in the treatment of atrioventricular retrograde paroxysmal tachycardia].

Forty-four cases of induced atrioventricular retrograde paroxysmal tachycardia (AVRPT) were studied. AVRPT was provoked by means of frequent esophageal stimulation of the left atrium. During the study, records from the external and esophageal ECG leads were taken. Administration of 10 mg finoptin controlled the AVRPT attack in 86.7% of cases, and the administration of 10 mg fosfobion, in 76.2%. Antegrade block of echo impulse conduction through the atrioventricular node was the electrophysiologic mechanism of AVRPT control in all cases. The time needed to control the attack by the above-mentioned drugs ranged from a few seconds to 5 minutes. Changes of atrioventricular conductivity and patients' subjective sensations were more marked where fosfobion was used.