Temporal changes in serum creatine kinase-myocardial band fraction (CK-MB) (a) and magnesium (Mg) (b) before the procedure [coronary angiography (CAG) or percutaneous coronary intervention (PCI)] and at 5 min, 30 min, 2 h, 6 h, and 24 h following the procedure in the PCI group (who underwent PCI, n=24), the positive CAG group (who had positive CAG findings, but did not have PCI, n=10), and the negative CAG group (who had negative CAG findings, n=16)
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P<0.05 vs. baseline