ATI TEAS (Test of Essential Academic Skills) Version 7ReadingEasy
A medical assistant is preparing a patient for a blood draw. The patient asks, 'Why do I need to fast before this blood test?' The medical assistant explains, 'Fasting ensures that substances like glucose and lipids from recently consumed food do not artificially elevate your blood levels, which could lead to inaccurate test results.' Which of the following best describes the medical assistant's explanation?
- AA historical fact
- BA procedural step
- CAn anecdotal observation
- DA scientific rationale
Show answer & explanationAnswer & explanation
Correct answer: D. A scientific rationale
The medical assistant's explanation provides a scientific reason (glucose and lipids from food affecting blood levels) for the fasting requirement, linking cause and effect based on physiological processes. This is a scientific rationale.
Why the other options are wrong
- A. A historical fact would relate to the origin or past of the practice, which is not discussed.
- B. A procedural step would be 'You need to fast for 8 hours,' not an explanation of why.
- C. An anecdotal observation is a personal story or unverified account, which this is not.
Identifying Scientific Rationale
Recognizing explanations that provide a logical, evidence-based reason for a phenomenon or procedure, often involving biological or chemical processes.
- Connects cause and effect.
- Often explains 'why' something happens or is done.
- Based on established scientific principles.
Memory trick: Explanations reveal the 'why' behind the 'what'.