Comparison of propafenone and disopyramide for treatment of chronic ventricular arrhythmias: placebo-controlled, double-blind, randomized crossover study.

Abstract:

:In a double blind, placebo-controlled study, the efficacy of propafenone, a new antiarrhythmic drug was compared to that of disopyramide. Sixteen patients with frequent and complex premature ventricular contractions (PVCs) were studied by serial 24-hour ambulatory monitoring, while they were receiving propafenone, 300 mg, and disopyramide, 200 mg, both every 8 hours. A reduction in the mean frequency of PVCs per hour, in comparison to the placebo period, from 574 +/- 535 to 100 +/- 130, was observed after propafenone (p less than 0.005) and from 629 +/- 455 to 231 +/- 280 after disopyramide (p less than 0.008). A greater than 70% reduction in PVCs in comparison to placebo was observed in 11 of 14 after propafenone and 9 of 15 after disopyramide (NS). A greater than or equal to 90% reduction in PVCs was observed in 9 of 16 with propafenone and in 4 of 15 with disopyramide (p less than 0.05). The suppression of complex PVCs (repetitive, polymorphic, or more than 5/min with bigeminism) was observed in 11 of 14 after propafenone and in 9 of 14 after disopyramide. The abolition of nonsustained ventricular tachycardia was observed in 6 of 6 and 3 of 5, respectively, after propafenone and disopyramide (p less than 0.05). A lower incidence of side effects, 4 of 16 vs 8 of 16, was observed during propafenone than during disopyramide treatment. We conclude that propafenone, in a dose of 900 mg daily, is more effective than disopyramide, in a dose of 600 mg daily, in the treatment of frequent and complex PVCs and nonsustained ventricular tachycardias. Propafenone also showed a lower incidence of side effects.

journal_name

Am Heart J

journal_title

American heart journal

authors

Naccarella F,Bracchetti D,Palmieri M,Cantelli I,Bertaccini P,Ambrosioni E

doi

10.1016/0002-8703(85)90647-7

subject

Has Abstract

pub_date

1985-04-01 00:00:00

pages

833-40

issue

4

eissn

0002-8703

issn

1097-6744

pii

0002-8703(85)90647-7

journal_volume

109

pub_type

临床试验,杂志文章,随机对照试验
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    pub_type: 临床试验,杂志文章,随机对照试验

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