Hyperkalemia: Elevated potassium in the blood. Hyperkalemia can be caused by taking excessive amounts of potassium, by medications, tissue trauma, and by diseases such as kidney failure. Hyperkalemia may not produce any symptoms, but severe hyperkalemia can lead to potentially fatal arrythmias of the heart.
Quick Guide8 First Aid Kit Essentials for Scrapes, Cuts, Bug Bites, and More in Pictures
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Last Editorial Review: 5/13/2016