Antiarrhythmic effect of nifekalant on atrial tachyarrhythmia in four patients with severe heart failure.

Abstract:

OBJECTIVES:Nifekalant is a class III antiarrhythmic drug, which prolongs the refractory period of the atrial and ventricular myocardium, without negative inotropic action. Intravenous nifekalant was administered in four patients with atrial tachyarrhythmia and severe heart failure to terminate or prevent atrial tachyarrhythmia. METHODS AND RESULTS:Two of three episodes of atrial tachyarrhythmia were terminated by intravenous nifekalant (0.22 to 0.30 mg/kg) administration. Continuous intravenous infusion of nifekalant (0.15 to 0.40 mg/kg/hr) during six episodes to maintain the sinus rhythm, prevented recurrence of atrial tachyarrhythmia in five episodes in which prolongation of the QTc interval was observed to more than 450 msec. None of the patients showed worsening of the hemodynamics during treatment. One patient developed polymorphic ventricular tachycardia, which deteriorated into ventricular fibrillation. CONCLUSIONS:Nifekalant may be effective for treating atrial tachyarrhythmia in patients with severe heart failure. Further clinical studies are needed to confirm these findings.

journal_name

J Cardiol

journal_title

Journal of cardiology

authors

Shiga T,Matsuda N,Fuda Y,Haruta S,Hagiwara N,Kasanuki H

subject

Has Abstract

pub_date

2002-03-01 00:00:00

pages

159-64

issue

3

eissn

0914-5087

issn

1876-4738

journal_volume

39

pub_type

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