Question

which of the following isoenymes of creatine phosphokinase would be elevated in a patient who presents with a stroke?
a) cpk - bb
b) cpk - mb
c) cpk - 1
d) cpk - mm

Explanation:

Creatine phosphokinase (CPK) has different isoenzymes. CPK - BB is predominantly found in brain tissue. In a stroke patient, due to damage to brain cells, CPK - BB is released into the bloodstream and its levels are elevated. CPK - MB is mainly associated with heart muscle, CPK - MM with skeletal muscle, and CPK - 1 is not a standard commonly - referred to CPK isoenzyme in this context.

Answer:

a) CPK - BB