PharmacyLesson 3 of 3 in the course Routes of drug administration

Parenteral Nutrition: Indications, Formulation, Home Use, and Complications

5 flashcards · 5 quiz questions · 5 match pairs · 5 fill-in sentences · English

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Summary

Parenteral nutrition (PN) supplies nutrients directly into the bloodstream, bypassing eating and digestion. This lesson introduces the main types of PN and explains when it may be needed.

Parenteral nutrition is the intravenous delivery of a nutrient mixture. Depending on the patient's needs, a mixture may include glucose, salts, amino acids, lipids, vitamins, and minerals.

All flashcards

What is parenteral nutrition (PN)?
Intravenous delivery of a nutrient mixture that bypasses eating and digestion.
How does total PN differ from partial PN?
Total PN provides essentially all nutrition; partial PN supplements nutrition obtained through other routes.
How do peripheral and central venous nutrition differ?
Peripheral nutrition uses venous access in a limb; central nutrition uses central venous access.
When may PN be considered instead of enteral feeding?
When the gastrointestinal tract cannot safely or adequately provide nutrition; enteral feeding is generally preferred when feasible.
Why may nutritional support require special consideration in older adults?
Lower nutrient intake, delayed muscle restoration, comorbidities, insulin resistance, and micronutrient deficiencies can increase nutritional risks.

Quiz questions

  1. Why might a clinician select a standardized PN formulation rather than customize one?Answer: It can reduce costs and provide better control of serum electrolytes.
  2. Why is an intravenous glucose solution alone not considered PN?Answer: It supplies energy but does not address nutritional needs broadly enough.
  3. What is the role of an emulsifier such as lecithin in a PN lipid emulsion?Answer: It helps keep fat dispersed in the aqueous solution.
  4. Why are egg-derived emulsifiers generally not recommended for people with egg allergy?Answer: They may provoke an allergic reaction.
  5. What should clinicians do before administering an IV medication through the same Y-site as PN?Answer: Assess compatibility between the medication and the PN admixture.

Based on the Wikipedia article Parenteral nutrition, licensed CC BY-SA 4.0. Adapted into a summary, flashcards and quizzes.

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