Why Candidates Fail the Intake and Output Measurement Skill
Measurements must be precise and converted to milliliters — not ounces, and not approximated. One ounce equals 30 mL; candidates who record "8 oz" instead of "240 mL" fail the documentation portion. Ice chips are recorded at approximately 50% of their volume as fluid intake — not accounting for ice is a consistent error. Candidates must subtract any amount the resident did not consume and document the net intake, not the amount offered.
How this skill is evaluated
The evaluator scores each skill on a pass/fail checklist. You do not get partial credit. A single critical error — or several minor ones — will fail you on this skill entirely. You must pass all 5 randomly selected skills to pass the clinical exam.
The 5 Most Common Failure Points
Discarding urine before measuring — always measure first.
Reading the graduate from above rather than at eye level — this causes parallax measurement error.
Not converting ice chips to liquid equivalent (half the volume).
Not documenting immediately — memory errors lead to inaccurate records.
Forgetting to total intake and output at the end of the shift.
Exactly What the Evaluator Is Watching
These are the specific checkpoints on the evaluator's score sheet for this skill.
- ✓
Gloves are worn when handling urine and other output.
- ✓
Graduated container is read at eye level.
- ✓
Both intake and output are documented accurately and immediately.
- ✓
Ice chips are calculated at approximately half their volume in liquid.
- ✓
Abnormal findings are reported to the nurse.
How to Avoid These Mistakes on Exam Day
These tips come from the most common failure patterns in Intake and Output Measurement.
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Measure at eye level on a flat surface — hold the graduate steady and get down to its level.
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Read at the bottom of the meniscus (the curved surface of the liquid).
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Ice chips = half the cup volume in ml — this is commonly tested.
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Report output less than 30 ml per hour or any significant imbalance.
Practice the written exam too
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