Nutrition Study Notes

Enteral nutrition involves delivering liquid nutrients via a tube into the gastrointestinal tract for patients who have a functional gut but cannot swallow. This method is preferred over parenteral nutrition because it maintains gut integrity and has a lower risk of infection. Nurses are responsible for ensuring correct tube placement, monitoring for complications, and managing delivery systems.

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Total Parenteral Nutrition (TPN) provides intravenous macro and micronutrients to patients who cannot utilize their gastrointestinal tract. Because of its high glucose concentration, TPN is highly caustic to peripheral veins and requires central venous access. Nursing care focuses on infection prevention, metabolic monitoring, and maintaining infusion consistency.

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Macronutrients are the fundamental building blocks of nutrition required by the body in large amounts. Carbohydrates provide quick energy, proteins facilitate tissue repair, and fats support cell function and organ protection. Nurses monitor lab values and physical signs to ensure patients are meeting their metabolic demands, especially during illness or recovery.

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Dysphagia management is critical for preventing aspiration pneumonia and ensuring adequate hydration and nutrition. Patients with impaired swallowing require specific dietary modifications and feeding techniques to safely ingest food and liquids. The nurse's role involves assessment during meals and implementation of safety precautions established by the interdisciplinary team.

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Therapeutic diets are ordered to manage symptoms of chronic diseases or to prepare the body for medical procedures. These diets adjust specific nutrients such as sodium, potassium, fiber, or carbohydrates to achieve clinical goals. Nurses must ensure the patient receives the correct diet tray and understands the rationale behind the restrictions.

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Vitamins and minerals are micronutrients that act as catalysts for metabolic and chemical reactions in the body. While needed in small amounts, their deficiency or excess can lead to significant health problems. Nursing care involves identifying patients at risk for imbalances and educating them on food sources and safe supplementation.

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