Section: NCLEX

14) The nurse is caring for a patient with an acute myocardial infarction. Which of the following laboratory findings would MOST concern the nurse?

1. Erythrocyte sedimentation rate (ESR)–10 mm/h
2. Hematocrit (Hct)–42%
3. Creatine kinase (CK)–350 U/ml
4. Serum glucose–100 mg/dL

enzyme specific to brain, myocardium and skeletal muscle; indicates tissue necrosis or injury; normal: men: 12-70 U/mL, women: 10-55 U/ml