Myocardial infarction is accompanied by typical biochemical changes.Elevation of which enzyme in the blood occurs first after the occlusion of a coronary artery?
A) Alanine aminotransferase
B) Aspartate aminotransferase
C) Creatine kinase
D) Lactate dehydrogenase
E) Acid phosphatase

Question

Quizplus · Accepted Answer

Creatine kinase is the enzyme that is first elevated in the blood after the occlusion of a coronary artery. This is due to the fact that creatine kinase is predominantly found in the heart muscle cells and is released into the bloodstream when the cells are damaged. The other enzymes listed (alanine aminotransferase, aspartate aminotransferase, lactate dehydrogenase, and acid phosphatase) may also be elevated in myocardial infarction, but not as early as creatine kinase.

Myocardial Infarction Is Accompanied by Typical Biochemical Changes