in patients with an accurately known time of onset of symptoms and serial enzyme analysis every 12 h during the first 48 h , acute myocardial infarction can be distinguished from pulmonary embolism by determinations of creatine kinase , ck-mb , aspartate aminotransferase , and lactate dehydrogenase isoenzyme 1 in serum .
C0155626
acute
C0010290
ck-mb