Question

question 2 (mandatory) (1 point)
listen
a 65 - year - old male patient presents to your office. lab work reveals elevated blood levels of cpk - bb. which of the following is the most likely cause of the rise in this isoenzyme?
a) myocardial infarction
b) multiple myeloma
c) liver cancer
d) ischemic stroke
e) muscle trauma

Explanation:

CPK - BB (creatine phosphokinase - brain type) is mainly found in the brain and some other tissues like the lungs and intestines. In an ischemic stroke (a type of stroke caused by a lack of blood supply to the brain), there is damage to brain cells. When brain cells are damaged, they release CPK - BB into the bloodstream.

• Myocardial infarction (heart attack) mainly releases CPK - MB (muscle - brain type of CPK which is more specific to heart muscle).
• Multiple myeloma is a cancer of plasma cells and is not typically associated with significant elevation of CPK - BB.
• Liver cancer is more associated with liver - specific enzymes like alanine transaminase (ALT), aspartate transaminase (AST) etc., not CPK - BB.
• Muscle trauma is more likely to release CPK - MM (muscle - muscle type of CPK).

Answer:

d) Ischemic stroke