Abstract
Variations in serum levels of calcium (Ca 2+), sodium (Na +), potassium (K +), chloride (Cl −), phosphorus (HPO 4 2−, H 2PO 4 −), and magnesium (Mg 2+) ions during acute myocardial ischemia were analyzed in 55 patients with acute myocardial infarction (AMI), 60 patients with episodes of angina (EA), and 76 patients with noncardiac chest pain (NCP). Serum levels of Na +, phosphorus ions, and Mg 2+ were lower in patients with AMI and EA than in patients with NCP; patients in the AMI and EA groups had lower serum levels of Ca 2 and Cl − compared with the NCP group. A significant negative correlation was found between creatine phosphokinase and Na +, phosphorus ion, and Mg 2+ levels.
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