It is suspected that a patient who was severely injured in an automobile accident may have had a myocardial infarction (MI)prior to the crash.Which laboratory test result drawn while the patient was in the emergency department would the nurse evaluate as supporting that theory?
A)Increased serum potassium
B)Increased creatine kinase level
C)Increased BNP level
D)Increased troponin level

Question

Quizplus · Accepted Answer

An increased troponin level is a hallmark indicator of myocardial infarction, as troponin is released when heart muscle is damaged. Increased serum potassium and increased creatine kinase level may also indicate myocardial damage, but are not specific to MI. Increased BNP level is associated with heart failure, but not necessarily MI.

It Is Suspected That a Patient Who Was Severely Injured