A patient is brought into the ER with chest pain. The physician is having difficulty confirming the patient's diagnosis through an ECG
Blood results show an elevated level of CPK-2. What can the physician suspect after reviewing the blood work?
a. Pulmonary embolism
b. Gastroesophageal reflux
c. Myocardial infarction
d. Valvular stenosis
ANS: C
The most common CPK enzyme test is CPK-2 (CPK-MB) which is released from the heart fol-lowing myocardial infarction. Peak levels occur sometime between 12 and 24 hr following injury. Serial CPK-2 measurements are monitored in patients with suspected myocardial infarction, as well as patients with cardiac contusion from chest trauma, open-heart surgery, or myocarditis.
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