ATI TEAS (Test of Essential Academic Skills) Version 7ReadingMedium
A patient is given instructions for preparing for a colonoscopy: "The day before your procedure, you will begin a clear liquid diet. Avoid all solid foods. Examples of clear liquids include water, clear broth, apple juice (no pulp), plain gelatin (not red or purple), and clear sodas. Do not drink anything red or purple. You must also take the prescribed bowel preparation solution as directed, typically starting in the evening before the procedure and continuing into the morning of the procedure. Stop all liquids 2 hours prior to your scheduled arrival time." Why is it specifically advised to avoid red and purple liquids?
- AThey contain high amounts of sugar.
- BThey can cause an allergic reaction.
- CThey can be mistaken for blood during the procedure.
- DThey interfere with the effectiveness of the bowel preparation solution.
Show answer & explanationAnswer & explanation
Correct answer: C. They can be mistaken for blood during the procedure.
Red and purple dyes can stain the colon lining, making it difficult for the physician to distinguish them from actual blood or other abnormalities during the colonoscopy.
Why the other options are wrong
- A. While some red/purple liquids (like grape juice) can be high in sugar, the primary concern for colonoscopy prep is not sugar content, but color.
- B. While allergies are possible with any food, this is not the primary or specific reason for the blanket 'no red or purple' rule for colonoscopy prep.
- D. The color of the liquid does not typically interfere with the chemical action of the bowel preparation solution itself, but rather with the visual assessment during the procedure.
Colonoscopy Prep Rationale
The reasoning behind specific dietary and medication instructions given to patients before a colonoscopy to ensure a clear view of the colon.
- Ensures accurate visualization of the colon lining.
- Prevents misinterpretation of findings (e.g., blood).
- Improves diagnostic accuracy and procedure safety.
Memory trick: Colon Check: Clear View, No Red Clues!