Hyperkalemia is a potentially life-threatening condition, which may occur in many clinical settings. Heparin-induced hyperkalemia is less well-recognized than other side effects of heparin therapy. Even lesser known is heparin abuse amongst drug addicts. We report a case of fatal hyperkalemia related to long-term heparin abuse, which was refractory to anti-hyperkalemia therapy including hemodialysis. The objective is to alert the clinicians to possible abuse of heparin in drug addicts, which can be a cause for refractory hyperkalemia. We also briefly review the available literature on heparin-induced hyperkalemia.
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