Cited by 87Cardiac Arrhythmias and TreatmentsCardiac electrophysiology and arrhythmiasAtrial Fibrillation Management and Outcomes

Effect of encainide and flecainide on chronic ectopic atrial tachycardia

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Kunze, Klaus-Peter, Kuck, Karl-Heinz, Schlüter, Michael, Bleifeld, Walter·1986·Journal of the American College of Cardiology

Abstract

In the treatment of chronic ectopic atrial tachycardia, standard antiarrhythmic therapy has been shown to be ineffective in the majority of patients. The intravenous and oral effects of two class IC antiarrhythmic drugs, encainide and flecainide, in five patients with chronic ectopic atrial tachycardia were studied using exercise testing, 24 hour long-term electrocardiography and programmed electrical stimulation. All patients had been treated unsuccessfully with at least four antiarrhythmic drugs. In two patients tachycardia was persistent, and in three patients tachycardia occurred intermittently for more than 12 hours/day. Intravenous encainide and flecainide at doses ranging from 0.3 to 2.0 mg/kg and from 0.5 to 1.5 mg/kg body weight, respectively, terminated atrial ectopic tachycardia in all patients. Oral encainide, 150 to 225 mg/day, completely suppressed ectopic atrial activity in four patients during a mean follow-up period of 8 +/- 3 months. In the remaining patient encainide markedly reduced the number of episodes of tachycardia. In three patients encainide had to be withdrawn because of intolerable side effects. These patients were well controlled with oral flecainide, 200 to 300 mg/day, without side effects. On the basis of these results, the efficacy of encainide and flecainide in the treatment of chronic ectopic atrial tachycardia appears to be not drug-specific but rather a general class IC property.

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Crossref · 10.1016/s0735-1097(86)80233-9

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Authors
Kunze, K.-P., Kuck, K.-H., Schlüter, M., & Bleifeld, W.
Affiliations
University Medical Center Hamburg-Eppendorf (DE)
Venue
Journal of the American College of Cardiology
Publisher
Elsevier BV
Published
1986-05
Volume
7
Issue
5
Pages
1121-1126
ISSN
0735-1097 (ISSN-L)
OpenAlex
W2016482152
Cited by
87
References
15
Citations by year
2025: 3 · 2022: 3 · 2019: 2 · 2018: 1 · 2016: 4 · 2015: 6 · 2013: 1
FWCI
8.41
Type
journal article
Language
en
Open access
Locations
  • Journal of the American College of Cardiology (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Cardiac Arrhythmias and Treatments
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Cardiac electrophysiology and arrhythmias
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Atrial Fibrillation Management and Outcomes
Keywords
encainide, flecainide, class Ic antiarrhythmic drugs, drug efficacy, refractory tachycardia, intravenous administration, oral administration, programmed electrical stimulation
MeSH terms
Adult, Anilides, Chronic Disease, Electrophysiology, Female, Flecainide, Heart Atria, Humans, Male, Middle Aged, Piperidines, Tachycardia, Encainide

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