title: [Etatsizin efficacy in patients with ventricular tachycardias. The results of intracardiac electrophysiological research].
abstract: As many as 30 patients with different pathologies of the cardiovascular system and paroxysms of ventricular tachycardias were examined. According to the ultrasonography data, an ejection fraction was not lower than 35% in all the patients. It has been shown by electrophysiological studies that intravenous injection of ethacizine in a dose of 0.6 +/- 0.1 mg/kg prevented induction of ventricular tachycardia in 66.7% of patients. In 16.7% of patients, the drug exerted an arrhythmogenic effect that showed up by a decrease of the cycle of tachycardia. Oral administration of ethacizine in the daily dose 100 or 150 mg prevented tachycardia induction by endocardial stimulation in 20.8% of patients. The arrhythmogenic effect of the drug was recorded in 12.5% of patients. The action of ethacizine when administered by both routes was accompanied by a significant elongation of the P--Q interval, QRS complex and of the cycle of ventricular tachycardia. Continuous administration of ethacizine in the daily dose 150 mg to patients with a positive antiarrhythmic drug action (according to the electrophysiological data) prevented paroxysms of ventricular tachycardia, with the observation period being 2 to 6.5 years.
authors.forename: V I
authors.initials: VI
authors.lastname: Malakhov
authors.forename: S P
authors.initials: SP
authors.lastname: Golitsyn
authors.forename: S F
authors.initials: SF
authors.lastname: Sokolov
authors.forename: S A
authors.initials: SA
authors.lastname: Bakalov
authors.forename: E R
authors.initials: ER
authors.lastname: Levin
authors.forename: G A
authors.initials: GA
authors.lastname: Mikhaĭlova
authors.forename: I B
authors.initials: IB
authors.lastname: Krutanov
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000889:Anti-Arrhythmia Agents / Q000627:therapeutic use*; D006328:Cardiac Catheterization; D002304:Cardiac Pacing, Artificial; D004341:Drug Evaluation; D004562:Electrocardiography / Q000187:drug effects; D015716:Electrocardiography, Ambulatory / Q000187:drug effects; D004594:Electrophysiology; D005260:Female; D006321:Heart / Q000187:drug effects* / Q000503:physiopathology; D006801:Humans; D008297:Male; D008875:Middle Aged; D010640:Phenothiazines / Q000627:therapeutic use*; D013610:Tachycardia / Q000188:drug therapy* / Q000503:physiopathology
chemical_list: D000889:Anti-Arrhythmia Agents; D010640:Phenothiazines; C046818:ethacizine
vernacular_title: Effektivnost' étatsizina u bol'nykh s zheludochkovymi takhikardiiami. Rezul'taty vnutriserdechnogo élektrofiziologicheskogo issledovaniia.