Nutrition, Hydration and Elimination
This topic covers feeding assistance, intake and output, diet orders, aspiration risk, toileting, catheter care, bowel and bladder changes, and dehydration clues.
How to study for the CNA exam
Build every answer around safety, dignity, infection control, scope of practice, observation, reporting, and client independence.
Core concepts
Concept 1
Diet orders, swallowing precautions, and fluid restrictions must be followed exactly and clarified when uncertain.
Exam cue: Check the diet order before offering food or fluids.
Concept 2
Clients should be positioned safely for meals and offered fluids frequently unless restricted.
Exam cue: Position upright for eating and observe for choking or swallowing difficulty.
Concept 3
Intake, output, stool, urine, appetite, choking, vomiting, and dehydration changes require accurate reporting.
Exam cue: Measure and report intake, output, and elimination changes accurately.
Risk pitfalls and guardrails
Offering food before checking diet or swallowing restrictions.
Guardrail: Avoid answers that force care, skip hand hygiene, move injured clients, expose private information, ignore changes, or perform nurse-only tasks.
Forcing fluids when restriction or swallowing risk is present.
Guardrail: Avoid answers that force care, skip hand hygiene, move injured clients, expose private information, ignore changes, or perform nurse-only tasks.
Ignoring new constipation, diarrhea, dark urine, or poor intake.
Guardrail: Avoid answers that force care, skip hand hygiene, move injured clients, expose private information, ignore changes, or perform nurse-only tasks.
Memory anchors
Diet Order
Check the care plan or diet order before offering food, fluids, or snacks.
Upright Feeding
Position the client upright during meals to reduce aspiration risk.
Slow Feeding
Offer small bites and allow time for chewing and swallowing.
Fluid Offer
Offer fluids often unless the client has a fluid restriction.
Intake
Intake is what the client eats or drinks and must be recorded as directed.
Output
Output includes urine, emesis, drainage, and other measured fluid loss.
Dehydration Clue
Dry mouth, confusion, dark urine, weakness, or poor intake can signal dehydration.
Toileting Schedule
Regular toileting supports continence, comfort, and skin protection.
Catheter Bag
Keep a urinary drainage bag below bladder level and off the floor.
Elimination Change
Report new diarrhea, constipation, blood, pain, or unusual urine or stool.
Checkpoint rule
Do the check-up only after you can summarize each concept in one sentence and identify one dangerous pitfall from memory.
Knowledge Check (after reading)
Short check-up to confirm understanding of this module.
Check-up Questions
Before serving a meal tray, what should the aide verify first?
A resident has a prescribed thickened-liquid diet. A family member offers regular water. What should the aide do?
Answer all questions to submit.
Next step personalized recommendations
Continue learning
Move forward only after this module is stable.
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