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A Case of Flecainide‐Induced Hyponatremia
Author(s) -
AHMED MUBASHIR,
SRA JASBIR,
AKHTAR MASOOD,
MORTADA M. EYMAN
Publication year - 2009
Publication title -
journal of cardiovascular electrophysiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.193
H-Index - 138
eISSN - 1540-8167
pISSN - 1045-3873
DOI - 10.1111/j.1540-8167.2009.01450.x
Subject(s) - flecainide , hyponatremia , medicine , discontinuation , anesthesia , adverse effect , tachycardia , cardiology , ventricular tachycardia , atrial fibrillation
We present a case of flecainide‐induced hyponatremia in a 67‐year‐old woman who was treated for paroxysmal atrial tachycardia. She developed dizziness after starting flecainide and was found to be hyponatremic with a sodium level of 122 mmol/L (decreased from 136 mmol/L). Work‐up failed to reveal other causes of hyponatremia. She was not on diuretics, laxatives, or herbal medications. After discontinuation of flecainide, her symptoms and sodium levels improved. Hyponatremia is a previously unrecognized entity as an adverse effect of flecainide. We will discuss the clinical presentation, lab findings, and a possible explanation for this patient's unusual reaction to flecainide.