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[Nutritional disturbances after Roux-en-Y gastric bypass].
Harefuah
|June 1, 1992
Summary
Long-term Roux-en-Y gastric bypass patients show gradual iron deficiency despite stable weight and no caloric deficiency. Vitamin B12 levels improved but remained low post-surgery.
Area of Science:
- Bariatric Surgery
- Nutritional Science
- Gastroenterology
Context:
- Roux-en-Y gastric bypass (RYGB) is a common bariatric procedure.
- Long-term nutritional consequences require ongoing investigation.
- Understanding post-surgical nutritional status is crucial for patient management.
Purpose:
- To assess long-term nutritional status in patients following Roux-en-Y gastric bypass.
- To evaluate changes in specific micronutrients and protein markers over time.
- To correlate nutritional status with weight loss and stability.
Summary:
- Nutritional follow-up of 200 patients 6.7 years post-RYGB revealed significant declines in iron saturation, hemoglobin, and mean corpuscular volume.
- Serum vitamin B12 levels, initially decreased, showed a later increase but remained below pre-bypass levels.
- Albumin and transferrin levels were normal, indicating no overt protein deficiency. No correlation was found between weight change and iron or vitamin B12 levels.
Impact:
- Highlights the gradual development of iron deficiency as a significant long-term risk after RYGB.
- Suggests the need for continued monitoring of iron status in bariatric surgery patients.
- Provides insights into the complex long-term nutritional adaptations following RYGB.