malabsorption
Reduced absorption of nutrients from the intestine, a intended mechanism of some bariatric procedures but can lead to deficiencies.
Full Definition
Malabsorption in bariatric surgery refers to the deliberate reduction of nutrient absorption achieved by bypassing portions of the small intestine, particularly in procedures like gastric bypass and duodenal switch. While contributing to weight loss through reduced caloric absorption, malabsorption increases the risk of nutritional deficiencies including vitamins B12, D, folate, iron, and calcium. Patients require lifelong supplementation and regular monitoring of nutritional status. The degree of malabsorption varies by procedure, with duodenal switch causing the most significant malabsorption and sleeve gastrectomy causing minimal malabsorption.
Usage
Usage note: Distinguish from malnutrition, which is the consequence of malabsorption or inadequate intake.
In Context
- "Post-bypass malabsorption necessitates comprehensive vitamin supplementation protocols." — Nutritional counseling
- "The malabsorptive component of gastric bypass contributes to sustained weight loss." — Surgical education material