Pirmenol hydrochloride-induced QT prolongation and T wave inversion on electrocardiogram during treatment for symptomatic atrial fibrillation.
Pirmenol hydrochloride is a new orally effective, long-acting antiarrhythmic agent currently used in patients with supraventricular and ventricular tachyarrhythmias. We report on a 56-year-old female who exhibited drug refractory paroxysmal atrial fibrillation, in which marked prolongation of the QT interval and T wave inversion on electrocardiogram was demonstrated reproducibly shortly after the administration of oral pirmenol therapy. The plasma concentration of pirmenol was at a subtherapeutic level and the lymphocyte stimulation test was positive in this patient. Thus, an immunological mechanism might be involved in the mechanism of pirmenol-induced QT prolongation and T wave inversion on the electrocardiogram.
Abe
H
H
Second Department of Internal Medicine, School of Medicine, University Hospital, University of Occupational and Environmental Health, Kitakyushu, Japan.
Numata
T
T
Hanada
H
H
Kohshi
K
K
Nakashima
Y
Y
D000889:Anti-Arrhythmia Agents / Q000009:adverse effects*; D001281:Atrial Fibrillation / Q000188:drug therapy* / Q000503:physiopathology*; D004562:Electrocardiography / Q000187:drug effects*; D005260:Female; D006801:Humans; D008133:Long QT Syndrome / Q000139:chemically induced*; D008875:Middle Aged; D010880:Piperidines / Q000009:adverse effects*
D000889:Anti-Arrhythmia Agents; D010880:Piperidines; C024318:pirmenol