Related Experiment Videos
The relation between ileal resection and vitamin B12 absorption
Canadian Journal of Surgery. Journal Canadien De Chirurgie
|September 1, 1977
Summary
Resection of over 60 cm of terminal ileum significantly impairs vitamin B12 absorption, as indicated by the Schilling test. This length of resection also correlates with fat malabsorption, suggesting terminal ileal dysfunction.
Area of Science:
- Gastroenterology
- Nutritional Science
- Surgical Outcomes
Background:
- The terminal ileum plays a crucial role in the absorption of vitamin B12 and fats.
- Ileal resections are common surgical procedures with potential consequences for nutrient absorption.
Purpose of the Study:
- To evaluate the impact of terminal ileal resection length on vitamin B12 absorption using the Schilling test.
- To assess the correlation between ileal resection extent and fat malabsorption.
Main Methods:
- A retrospective analysis of 33 patients undergoing 36 ileal resections over 15 years.
- Schilling tests were performed to measure vitamin B12 absorption.
- Stool-fat estimations were conducted in a subset of patients.
Main Results:
- Patients with <60 cm ileal resection had a higher rate of normal Schilling tests (17/25) compared to those with ≥60 cm resection (1/11).
- Stool-fat estimations were abnormal in all patients with ≥60 cm ileal resection (7/7) versus 8/10 normal in those with <60 cm resection.
- Schilling test results correlated with resection length up to 60 cm.
Conclusions:
- The length of terminal ileum resected is a significant factor in vitamin B12 and fat malabsorption.
- Removal of more than 60 cm of terminal ileum likely leads to malabsorption.
- The Schilling test serves as an indicator of terminal ileal dysfunction severity.