A postoperative patient has a serum albumin level of 2.3 gm. What is the appropriate route of administration for albumin for this patient?

1. A

   Intramuscular

2. B

   Oral

3. C

   IV line

4. D

   SC

Appeared in: AIIMS Delhi NO - 2018

Explanation

• The patient's serum albumin is 2.3 gm/dL, which is critically low and requires immediate correction.
• Albumin is a large protein molecule that functions within the bloodstream to maintain oncotic pressure.
• The intravenous (IV) route is the only method that delivers albumin directly into the vascular space, ensuring 100% bioavailability and an immediate therapeutic effect.
• Administering albumin via an IV line is essential for rapidly increasing plasma volume and correcting the fluid shifts associated with severe hypoalbuminemia.

Why Other Options Were Wrong

• Option A: The intramuscular (IM) route is incorrect because albumin is a large molecule that would be absorbed very slowly and erratically from muscle tissue, making it ineffective for acute correction.
• Option B: The oral route is incorrect because albumin is a protein that would be broken down into amino acids by digestive enzymes in the stomach and intestines, preventing its absorption into the bloodstream in its active form.
• Option D: The subcutaneous (SC) route is incorrect for the same reasons as the IM route; the large albumin molecule cannot be effectively absorbed from the subcutaneous tissue into the bloodstream.

Related Visual

Clinical Relevance

• Nursing practice connection: Use the key finding related to Routes of drug administration for protein-based therapies to guide bedside assessment, documentation, and the next nursing action.
• A serum albumin level below 2.5 g/dL is considered severe hypoalbuminemia and is associated with poor surgical outcomes, impaired wound healing, and increased risk of complications.
• Nurses must vigilantly monitor for signs of circulatory overload during albumin infusion (e.g., dyspnea, tachycardia, jugular vein distention), as the rapid shift of fluid into the vascular space can strain the heart.
• What if the patient's albumin was only mildly decreased (e.g., 3.3 g/dL) and they were clinically stable? The priority would likely shift from IV albumin to nutritional support, encouraging a high-protein diet to help the body synthesize its own albumin.

How to Approach the Question

• First, identify the key clinical data: The patient is postoperative with a serum albumin of 2.3 gm/dL.
• Recognize that 2.3 gm/dL is significantly below the normal range (3.5-5.5 gm/dL), indicating a need for replacement.
• Recall the nature of the substance to be administered: Albumin is a large protein.
• Apply pharmacokinetic principles. Ask yourself: How would a large protein be handled by different routes? It would be digested orally and poorly absorbed from tissue (IM/SC).
• Conclude that to be effective systemically, the protein must be delivered directly into the bloodstream.
• Select the intravenous (IV) route as the only logical option for direct, immediate systemic delivery.

Concept Tested & Keywords

• Concept Tested: Routes of drug administration for protein-based therapies
• Stem keywords: postoperative, serum albumin, 2.3 gm, route of administration
• Lead-in keywords: appropriate route
• Clinical cues: Serum albumin 2.3 gm/dL indicates severe hypoalbuminemia (Normal: 3.5-5.5 gm/dL)

Question ID

QEC7-GdPxJzu51Zy2pML0p

Copy ID

Reference Book

E6 Nelson Textbook of Pediatrics(2024) — Volume 1 p. 695-697

E6 Pharmacology Nursing Lilley 11e Part 1 p. 39-41