CNA Certification (Written Exam)Basic Nursing SkillsMedium
A resident drank 8 oz of juice, 6 oz of milk, and 4 oz of water during breakfast. How many milliliters of fluid intake should the nurse aide record?
- A540 mL
- B720 mL
- C360 mL
- D180 mL
Show answer & explanationAnswer & explanation
Correct answer: A. 540 mL
Total ounces consumed = 8 + 6 + 4 = 18 oz. Since 1 oz = 30 mL, 18 oz x 30 mL = 540 mL, which is the correct amount to record.
Why the other options are wrong
- B. 720 mL would be 24 oz, more than the actual amount consumed.
- C. 360 mL would only account for 12 oz, missing part of the total.
- D. 180 mL would only account for 6 oz, not the total intake.
Intake and Output (I&O) Conversion
Fluid intake is measured by converting ounces to milliliters, using the standard conversion of 1 oz = 30 mL.
- 1 ounce = 30 milliliters
- Add all fluid amounts before converting, or convert each and add
- Accurate I&O tracking helps monitor hydration and kidney function
Memory trick: 'One ounce, thirty mLs, always the same'