Table 2.
Recommended postoperative nutritional monitoring* 112
| Recommendation | AGB | VSG | RYGB | BPD-DS |
|---|---|---|---|---|
| Bone density (DXA) at 2 years | Yes | Yes | Yes | Yes |
| 24 hour urinary calcium excretion at 6 months and annually | Yes | Yes | Yes | Yes |
| Vitamin B12 annually (methylmalonic acid and homocysteine optional) then every 3-6 months if supplemented | Yes | Yes | Yes | Yes |
| Folic acid (red blood cell folic acid optional), iron studies, vitamin D, intact parathyroid hormone | No | No | Yes | Yes |
| Vitamin A initially and every 6-12 months thereafter | No | No | Optional | Yes |
| Copper, zinc, and selenium evaluation with specific findings | No | No | Yes | Yes |
| Thiamine evaluation with specific findings | Yes | Yes | Yes | Yes |
*AGB=adjustable gastric banding; BPD-DS=biliopancreatic diversion with duodenal switch; DXA=dual energy X ray absorptiometry; RYGB=Roux-en-Y gastric bypass; VSG=vertical sleeve gastrectomy.