The nurse is caring for a patient with a skeletal muscle disorder. The nurse reviews the patient's lab results and expects which creatine phosphokinase isoenzyme to be elevated?



• Creatine phosphokinase, or creatine kinase (CK) is an enzyme that is released from tissue after injury. CK-MM is expressed during skeletal muscle disease 

• CK-BB is expressed in the brain, but has little clinical relevance 

• CK-MB is reflective of cardiac muscle damage 

• CK-MK does not exist

Visit our website for other NCLEX topics now!