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Malnutrition and malabsorption after total gastrectomy. A pathophysiologic approach.

C Sategna-Guidetti1, L Bianco

  • 1Dipartimento di Biomedicina Endocrino-metabolica e Gastroenterologica, Università di Torino, Italy.

Journal of Clinical Gastroenterology
|October 1, 1989
PubMed
Summary

Malnutrition after total gastrectomy is primarily due to insufficient caloric intake. Caloric losses from fat malabsorption (steatorrhea) and protein leakage further reduce available nutrients, impacting patient recovery.

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Area of Science:

  • Gastroenterology
  • Surgical Nutrition
  • Clinical Medicine

Background:

  • Total gastrectomy significantly alters digestive function.
  • Nutritional deficiencies and malabsorption are common post-surgery.
  • Understanding these mechanisms is crucial for patient management.

Purpose of the Study:

  • To evaluate the nutritional status of patients after total gastrectomy.
  • To investigate the pathophysiologic mechanisms of malabsorption.
  • To identify key factors contributing to malnutrition post-surgery.

Main Methods:

  • Assessed 27 patients 9 months post-total gastrectomy and esophagojejunostomy.
  • Evaluated nutritional intake, weight loss, and key nutrient levels.
  • Measured fat malabsorption, protein loss (alpha-1-antitrypsin clearance), and pancreatic function (pancreolauryl test).

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Main Results:

  • Significant postoperative weight loss (-13.7%) and inadequate caloric intake (70% < 30 kcal/kg/day).
  • High prevalence of fat malabsorption (37.4%) and intestinal protein loss (nearly all patients).
  • Deterioration of various nutrient levels (Hb, albumin, prealbumin, iron, folate, transferrin, vitamin B12) over time.

Conclusions:

  • Inadequate caloric intake is the primary driver of malnutrition post-gastrectomy.
  • Steatorrhea and enteric protein leakage contribute significantly to negative energy balance.
  • Effective nutritional support strategies must account for these absorptive losses.