单选题 Which of the following findings is suggestive of myocardial infarction (MI)?
A. Below-normal erythrocyte sedimentation rate.
B. Elevated white blood cell count.
C. Elevated serum cholesterol value.
D. Elevated creatine phosphokinase (CPK) value.

【正确答案】 D

【答案解析】Common laboratory findings in the client who has suffered a MI include elevated CPK level. CPK is also released during muscle injury and brain injury. The CPK isoenzyme CPK-MB elevates only in response to myocardial damage.