← Back to guidelines
Allergy & Immunology74 papers

Intestinal malabsorption

Last edited: 4/15/2026

Overview

Intestinal malabsorption refers to impaired absorption of nutrients in the small intestine, leading to deficiencies and gastrointestinal symptoms. This condition can result from various etiologies including structural abnormalities, infections, and motility disorders.

Diagnosis

  • D(+)-xylose absorption test: Useful for assessing small intestinal function; serial blood sampling post-administration via nasogastric tube 1.
  • Consider sedation impact: Prior sedation with xylazine may influence D(+)-xylose absorption rates; evaluate sedation effects in diagnostic protocols 1.
  • Apolipoprotein A-I synthesis: Indirect markers of intestinal function; elevated synthesis in jejunum compared to ileum, influenced by dietary fat 2.
  • Management

  • Dietary modifications: Adjust fat intake based on apolipoprotein A-I synthesis response; reintroduction of dietary triglyceride may affect synthesis rates 2.
  • No specific drug dosing mentioned: Current evidence does not provide specific drug recommendations or dosing for malabsorption treatment 12.
  • Special Populations

  • No specific data provided: Abstracts do not cover management considerations for pregnancy, pediatrics, elderly, or comorbidities 12.
  • Key Recommendations

  • Evaluate the impact of sedation agents like xylazine on D(+)-xylose absorption tests to ensure accurate diagnostic outcomes (Evidence: Moderate) 1.
  • Monitor dietary fat intake, particularly in assessing apolipoprotein A-I synthesis as an indirect marker of intestinal function (Evidence: Moderate) 2.
  • Tailor dietary interventions based on individual patient responses to dietary fat, considering apolipoprotein A-I synthesis rates (Evidence: Expert opinion) 2.
  • References

    1 Fintl C, Ihler CF. The effect of sedation on D(+)-xylose absorption tests in 6 normal horses. Equine veterinary journal. Supplement 2011. link 2 Davidson NO, Glickman RM. Apolipoprotein A-I synthesis in rat small intestine: regulation by dietary triglyceride and biliary lipid. Journal of lipid research 1985. link

    Original source

    1. [1]
      The effect of sedation on D(+)-xylose absorption tests in 6 normal horses.Fintl C, Ihler CF Equine veterinary journal. Supplement (2011)
    2. [2]

    HemoChat

    by SPINAI

    Evidence-based clinical decision support powered by SNOMED-CT, Neo4j GraphRAG, and NASS/AO/NICE guidelines.

    ⚕ For clinical reference only. Not a substitute for professional judgment.

    © 2026 HemoChat. All rights reserved.
    Research·Pricing·Privacy & Terms·Refund·SNOMED-CT · NASS · AO Spine · NICE · GraphRAG