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2012-01-11 10:02:54

Patients hospitalized after a heart attack who had blood potassium levels of between 3.5 and less than 4.5 mEq/L (milliEquivalents per liter) had a lower risk of death than patients with potassium levels that were higher or lower than this range, according to a study in the January 11 issue of JAMA. Clinical practice guidelines recommend maintaining serum potassium levels between 4.0 and 5.0 mEq/L in patients after a heart attack. "Potassium homeostasis [equilibrium] is critical to prevent...