Flecainide cardiotoxicity precipitated by electrolyte imbalance. Caution with thiazide diuretics

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BMJ Group

RESUMO

A man presented with recurrent syncope, weakness and fatigue. His ECG showed marked QRS widening and he had gross hyponatraemia and hypokalaemia. His medications included bendroflumethiazide (long term) and flecainide (started 2 months previously).

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