A Case of Sudden Cardiac Death due to Pilsicainide-Induced Torsades de Pointes

Korean Circulation Journal 2014³â 44±Ç 2È£ p.122 ~ p.124

(Nakatani Shimpei) - Osaka Rosai Hospital Division of Cardiology
(Taniike Masayuki) - Osaka Rosai Hospital Division of Cardiology
(Makino Nobuhiko) - Osaka Rosai Hospital Division of Cardiology
(Egami Yasuyuki) - Osaka Rosai Hospital Division of Cardiology
(Shutta Ryu) - Osaka Rosai Hospital Division of Cardiology
(Tanouchi Jun) - Osaka Rosai Hospital Division of Cardiology
(Nishino Masami) - Osaka Rosai Hospital Division of Cardiology

Abstract

An 84-year-old male received oral pilsicainide, a pure sodium channel blocker with slow recovery kinetics, to convert his paroxysmal atrial fibrillation to a sinus rhythm; the patient developed sudden cardiac death two days later. The Holter electrocardiogram, which was worn by chance, revealed torsade de pointes with gradually prolonged QT intervals. This drug is rapidly absorbed from the gastrointestinal tract, and most of it is excreted from the kidney. Although the patient¡¯s renal function was not highly impaired and the dose of pilsicainide was low, the plasma concentration of pilsicainide may have been high, which can produce torsades de pointes in the octogenarian. Although the oral administration of class IC drugs, including pilsicainide, is effective to terminate atrial fibrillation, careful consideration must be taken before giving these drugs to octogenarians.

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Pilsicainide, Torsades de pointes, Sudden cardiac death
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