Electrophysiologic evaluation of pirmenol for sustained ventricular tachycardia secondary to coronary artery disease

Arthur R. Easley, David E. Mann, Michael J. Reiter, Valerie Sakun, Susan M. Sullivan, Sharon A. Magro, Jerry C. Luck, Christopher R.C. Wyndham

Research output: Contribution to journalArticlepeer-review

9 Scopus citations

Abstract

The efficacy and electrophysiologic effects of pirmenol were evaluated in 21 patients with a history of sustained ventricular tachycardia (VT) and coronary artery disease. Intravenous pirmenol (0.7- to 1.1-mg/kg bolus, followed by a 35- to 40-μg/kg/min infusion) significantly prolonged the PR, QRS, QT and corrected QT intervals, HV interval and right ventricular effective refractory period, and shortened the sinus cycle length and atrioventricular nodal block cycle length. All 21 patients had inducible VT (20 sustained, 1 nonsustained) during programmed stimulation in the control state. After intravenous pirmenol, 5 patients (24%) no longer had inducible VT. In those in whom VT was still inducible, the VT cycle length was prolonged significantly. The 5 patients who responded to intravenous pirmenol were given oral pirmenol (200 to 250 mg every 8 hours) for 1 to 3 days and retested with programmed stimulation. In 4 of these 5, VT could not be induced with oral pirmenol administration; in 1 patient sustained VT was induced and pirmenol therapy was discontinued. Oral pirmenol suppressed recurrent VT during a follow-up of 315 ± 133 days in 4 patients. However, pirmenol therapy was discontinued in 2 patients because of possible deleterious effects (worsened heart failure in 1 patient and elevated liver function test results in 1). Thus, pirmenol, a type IA antiarrhythmic drug, had an overall efficacy of approximately 19% in patients with sustained VT secondary to coronary artery disease.

Original languageEnglish (US)
Pages (from-to)86-89
Number of pages4
JournalThe American Journal of Cardiology
Volume58
Issue number1
DOIs
StatePublished - Jul 1 1986
Externally publishedYes

ASJC Scopus subject areas

  • Cardiology and Cardiovascular Medicine

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