A patient who is admitted in ICU and receiving TPN therapy. The on-duty nursing officer best knows that Intralipids can be administered by which of the following route?

1. A

   Central line

2. B

   Gastrostomy tube

3. C

   Peripheral line

4. D

   Feeding tube

Appeared in: NORCET 6 mains-2024

Explanation

Listen in Hindi

• Peripheral line because Intralipids (intravenous fat emulsions) are isotonic, meaning they have a solute concentration similar to blood.
• This isotonic property makes them safe for administration into smaller peripheral veins without causing chemical phlebitis or vessel damage.
• While lipids can be given via a central line, the ability to be administered peripherally is a key pharmacological characteristic that distinguishes them from hypertonic TPN solutions.
• Peripheral parenteral nutrition (PPN) formulas often contain lipids and are specifically designed for peripheral vein administration.

Why Other Options Were Wrong

• Option A: While lipids are often administered through a central line for convenience in a patient already receiving TPN, it is not a fundamental requirement. The central line is mandatory for the hypertonic TPN solution, not the isotonic lipid emulsion.
• Option B: A gastrostomy tube is a tube inserted through the abdomen that delivers nutrition directly into the stomach. This is a form of enteral feeding, not parenteral (intravenous) feeding.
• Option D: A feeding tube is a general term for any tube used for enteral nutrition (e.g., nasogastric, gastrostomy). Intralipids are for parenteral (intravenous) administration and cannot be given via the GI tract.

Related Visual

Clinical Relevance

• Nursing practice connection: Prioritize focused assessment, early escalation, and real-time monitoring when managing Route of Administration for Parenteral Nutrition Components in acute care settings.
• Understanding the correct administration route based on solution osmolarity is a critical patient safety principle for nurses to prevent complications like phlebitis, thrombosis, and extravasation.
• Nurses must always verify the type of parenteral nutrition. A TPN solution with >10% dextrose must go through a central line. A lipid emulsion or a PPN solution can be administered peripherally.
• What if? If the patient did not have a central line and only required short-term nutritional support with lipids and low-concentration dextrose, the nurse would prepare to administer it as Peripheral Parenteral Nutrition (PPN) via a peripheral IV.

How to Approach the Question

• First, identify the core of the question. The question is about the administration route for 'Intralipids', not the entire TPN therapy.
• Recall the properties of different parenteral nutrition components. TPN solutions are hypertonic, while lipid emulsions (Intralipids) are isotonic.
• Relate the solution's property (osmolarity) to the appropriate administration route. Hypertonic solutions require rapid dilution in a large central vein. Isotonic solutions are safe for smaller peripheral veins.
• Evaluate the options. Gastrostomy and feeding tubes are for enteral feeding and can be eliminated immediately.
• Differentiate between the remaining options: Central line and Peripheral line. Although a central line is present and can be used, the question asks what route Intralipids can be administered by. The ability to use a peripheral line is a defining characteristic of isotonic lipids.
• Select the answer that reflects the most fundamental principle related to the specific substance mentioned (Intralipids), which is its suitability for peripheral administration.

Concept Tested & Keywords

• Concept Tested: Route of Administration for Parenteral Nutrition Components
• Stem keywords: ICU, TPN therapy, Intralipids
• Lead-in keywords: can be administered
• Clinical cues: Patient is in ICU and receiving TPN, which implies a central line is already present, creating a clinical decision point between using the existing line or choosing the route based on the drug's properties.

Question ID

Qrs1Y4lUy6SuROMJ5iwAiH

Copy ID

Reference Book

E6 Nursing Fundamentals Potter Perry 12e Part 5 p. 207-209

E6 Nursing Brunner Adult Health 3SA Vol 1 Part 2 p. 105-107