A postoperative patient requires which nutrient after ileostomy?

PGIMER Sangrur NO - 2023

Medical & Surgical Nursing

Medium

Appeared in: PGIMER Sangrur NO - 2023

Explanation

The terminal ileum, the final section of the small intestine, is the specific and exclusive site for the absorption of Vitamin B12.
An ileostomy is a surgical procedure that involves creating an opening in the ileum, often requiring the removal or bypass of the terminal portion.
This surgical alteration directly impairs the body's ability to absorb dietary Vitamin B12, leading to a deficiency if not supplemented.
Consequently, patients with an ileostomy require lifelong Vitamin B12 supplementation, typically administered via injection to bypass the non-functional gut segment and prevent pernicious anemia and neurological damage.

Option B: Vitamin B1 (Thiamine) is primarily absorbed in the jejunum, a section of the small intestine located before the ileum. An ileostomy does not typically affect this area.
Option C: Vitamin C (Ascorbic Acid) is absorbed in the jejunum. Its absorption is not dependent on the terminal ileum.
Option D: Vitamin B6 (Pyridoxine) is absorbed throughout the small intestine, including the jejunum and ileum. While some absorption occurs in the ileum, it is not exclusively absorbed there, and significant deficiency is not a hallmark complication of ileostomy compared to B12.

Clinical Relevance

Nursing practice connection: Safe nursing care depends on performing Nutrient malabsorption following ileostomy surgery in the correct sequence, documenting the action clearly, and monitoring for the expected response.
Nurses must educate patients with new ileostomies about the lifelong need for Vitamin B12 supplementation to prevent serious complications like megaloblastic anemia and irreversible neurological damage.
A key nursing assessment for these patients includes monitoring for signs and symptoms of B12 deficiency, such as fatigue, pallor, shortness of breath, glossitis (sore tongue), and paresthesias (numbness or tingling in hands and feet).
What if? If the patient had a jejunostomy (an opening in the jejunum) instead of an ileostomy, the primary nutritional concern would shift to the malabsorption of carbohydrates, proteins, fats, and most water-soluble vitamins (like B1 and C), while Vitamin B12 absorption in the intact terminal ileum would likely be preserved.

How to Approach the Question

First, identify the key procedure in the question: 'ileostomy'.
Recall the relevant anatomy. An ileostomy involves the ileum, which is the final part of the small intestine.
Connect the anatomical location to its specific physiological function. The terminal ileum has a unique role that other parts of the intestine do not.
Consider the options provided. Each is a vitamin with a primary absorption site in the gastrointestinal tract.
Recall or deduce that the terminal ileum is the exclusive site for absorbing the Vitamin B12-intrinsic factor complex.
Eliminate the other vitamins (B1, C, B6) as they are primarily absorbed in the jejunum, which is located before the ileum and is unaffected by the surgery.

Concept Tested & Keywords

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E6 Nelson Textbook of Pediatrics(2024) — Volume 2 p. 127-129