Table 7.
Complications of bariatric surgery
| Complications | Frequency, %, and outcomes |
|---|---|
| Sepsis from anastomotic leak (105) | 1–2 |
| Hemorrhage (105) | 1–4 |
| Cardiopulmonary events (105) | … |
| Thromboembolic disease (105) | 0.34 |
| Late complications for AGB | Surgical revision required in as many as 20 within 5 years |
| Band slippage | 15 |
| Leakage | 2–5 |
| Erosion | 1–2 |
| Late complications of bypass procedures | |
| Anastomotic strictures | 1–5 |
| Marginal ulcers | 1–5 |
| Bowel obstructions | 1–2 |
| Micronutrient and macronutrient deficiencies from RYGB 2–3 years after surgery (105) | |
| Iron deficiency | 45–52 |
| Vitamin B12 deficiency | 8–37 |
| Calcium deficiency | 10 |
| Vitamin D deficiency | 51 |
| Fat-soluble vitamin deficiencies (A, D, E, K) and protein calorie malnutrition from BPD and DS procedures | 1–5 |
AGB, adjustable gastric banding; BPD, biliopancreatic diversion; DS, duodenal switch; RYGB, Roux-en-Y gastric bypass.