NCLEX PN Exam Practice Test Practice Question
Scenario/Extract:
Laboratory reference ranges
Glucose (random)
71-200 mg/dL
(3.9 - 11.1 mmol/L)
Hematocrit
Male: 42% - 52%
(0.42-0.52)
Female: 37% - 47%
(0.37 - 0.47)
Potassium
3.5-5.0 mEq/L
(3.5-5.0 mmol/L)
Troponin T (cTnT)
<0.1 ng/mL
(<0.1 mcg/L)
B-type natriuretic peptide
<100 pg/mL
(<28.9 pmol/L)
The nurse is reviewing laboratory data for a client admitted to the emergency department with chest pain. Which serum value requires immediate action by the nurse?
Correct Answer: D
Rationale: Elevated troponin T (0.7 ng/mL) indicates myocardial injury, requiring immediate action for possible myocardial infarction. Other values are less critical.
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