Table 1 Summary of the characteristics and the associated risks of different bariatric operations
From: The impact and treatment of obesity in kidney transplant candidates and recipients
Operation | Weight loss mechanism | Volume of gastric pouch (ml) | Length of bypassed small bowel (cm) | Expected EWL (%) | Physiological risks in the general population | Post-bariatric surgery nutritional supplementation | ||
|---|---|---|---|---|---|---|---|---|
Restrictive | Malabsorption | Hormonal | ||||||
Sleeve gastrectomy | + | + | 100 - 150 | 0 | 50 - 60 | GERD, B12-deficiency anemia | MV, Ca | |
Gastric bypass | + | + | + | 15 - 30 | 130 - 180 | 60 - 70 | Peptic ulcers, anemia, osteoporosis, dumping syndrome, kidney stones | MV, B12, Fe, Ca, vit D |
Bilio-pancreatic diversion and duodenal switch | + | + | + | 100 - 250 | 250 - 300 | 70 - 80 | Diarrhea/steatorrhea, anemia, vitamin deficiencies | MV, B12, Fe, Ca, vitamins A, D, E |
Adjustable gastric band | + | 30 | 0 | 20 - 40 | Band erosion or migration | Nil | ||