Nutrition in Nursing
Nutrition in nursing covers the assessment of nutritional status, therapeutic diets for specific disease conditions, enteral and parenteral nutrition management, and patient education about dietary modifications. NCLEX questions test your ability to identify appropriate diets for clinical conditions, recognize malnutrition, manage feeding tubes, and understand the role of nutrition in disease management and recovery.
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Study Tips
- ✓Match each disease condition to its therapeutic diet: renal disease (low potassium, phosphorus, sodium, protein), heart failure (low sodium, fluid restriction), celiac disease (gluten-free), Crohn's (low-residue during flares).
- ✓Know the key nursing considerations for TPN: use a dedicated central line, check blood glucose every 4-6 hours, never abruptly discontinue, and use an infusion pump.
- ✓Study enteral feeding tube management including residual volume checking, head-of-bed elevation to 30-45 degrees, and signs of tube displacement.
- ✓Memorize which foods are high in potassium (bananas, oranges, potatoes, tomatoes) and which are high in vitamin K (green leafy vegetables) for warfarin patients.
- ✓Learn to assess for refeeding syndrome in severely malnourished patients starting nutrition support.
Common Mistakes to Avoid
Students frequently forget to elevate the head of the bed to at least 30-45 degrees during and for 30-60 minutes after enteral feedings to prevent aspiration. Another common mistake is not recognizing that TPN must be tapered and never stopped abruptly because of the risk of rebound hypoglycemia. Students also confuse dietary restrictions for renal patients with those for cardiac patients. While both limit sodium, renal diets also restrict potassium and phosphorus, which are not typically restricted in cardiac diets. Always verify tube placement before initiating any enteral feeding.
Nutrition in Nursing FAQs
Common questions about nutrition in nursing
Key therapeutic diets include: low-sodium (<2g/day) for heart failure and hypertension; renal diet (low potassium, phosphorus, sodium, and pre-dialysis protein restriction); diabetic diet (consistent carbohydrate counting, balanced meals); low-residue/low-fiber for Crohn's disease flares and post-bowel surgery; clear liquid progressing to full liquid after surgery; gluten-free for celiac disease; and low-purine for gout. Know which foods are restricted on each diet and how to educate patients about reading food labels and making appropriate substitutions.
TPN (total parenteral nutrition) must be administered through a central venous access device using an infusion pump. Monitor blood glucose every 4-6 hours because the high dextrose concentration can cause hyperglycemia. Never abruptly discontinue TPN as this can cause rebound hypoglycemia; if it must be stopped, taper gradually or hang D10W. Use strict aseptic technique when changing tubing and dressing. TPN solutions are prepared in the pharmacy and should be inspected for cloudiness or particulate matter before hanging. Monitor daily weights, I&O, and electrolytes. Each bag should infuse within 24 hours to prevent bacterial growth.
Key nutritional assessment indicators include serum albumin (below 3.5 g/dL suggests chronic protein malnutrition, but it changes slowly over weeks), prealbumin (more sensitive and reflects nutritional changes over the past 2-3 days), BMI (below 18.5 is underweight, above 30 is obese), unintentional weight loss of more than 5% in 30 days or 10% in 6 months, skin turgor and mucous membrane moisture for hydration status, muscle wasting and temporal wasting for protein-calorie malnutrition, and peripheral edema from low albumin. Screen all patients on admission using a validated tool, and consult a dietitian for patients identified as at risk.