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When Potion Becomes Poison! A Case Report of Flecainide Toxicity

Overview
Journal J Postgrad Med
Specialty General Medicine
Date 2017 Mar 9
PMID 28272074
Citations 3
Authors
S Bajaj
M S Tullu
Zah Khan
M Agrawal
Affiliations
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Abstract

We report a 48-day-old female infant, who developed cardiac conduction abnormalities and seizures secondary to supratherapeutic doses of oral flecainide. Flecainide was started in this infant for treatment of supraventricular tachycardia. The drug was withdrawn with successful normalization of the QRS complex and no further recurrence of seizures. The Naranjo probability score for adverse drug reaction was 8, making the causality "probable." The case restates an important message that physicians should be aware of the side effects of the drugs that they prescribe, especially of those drugs which have a narrow therapeutic window.

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Case Files from the University of California San Diego Medical Toxicology Fellowship: Neonatal Flecainide Toxicity from an Accidental Dosing Error.

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