When the Nurse Is Reviewing Laboratory Data for a Patient

question 40

Multiple Choice

When the nurse is reviewing laboratory data for a patient who is taking methotrexate (Rheumatrex) , which information is most important to communicate to the health care provider?

• A) The platelet count is 130,000/ml.
• B) The white blood cell count (WBC) is 1500/ml.
• C) The blood glucose is 130 mg/dl.
• D) The potassium is 5.2 mEq/L.

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Definitions:

Internal Validity

Refers to how well an experiment is conducted and whether it measures what it's supposed to measure, without being confounded by other factors.

Independent Variable

A variable in an experiment that is manipulated to observe its effects on a dependent variable.

Internal Validity

The extent to which a study provides evidence that a causal relationship exists between the variables it examines, free from confounding factors.

Random Assignment

Use of a random "chance" procedure (such as a random number generator or coin toss) to determine the condition in which an individual will participate.