Table 5.
Definition of postoperative complications in the included studies
| Ref. |
Anastomotic |
Reflux gastritis/esophagitis | Delayed gastric emptying | Roux stasis syndrome |
| bleeding/stricture/ulcer | ||||
| Noh[15] 2000 | -/ND/ND | ND | ND | Definition D |
| Xu et al[16] 2010 | ND/ND/- | ND | - | ND |
| He et al[17] 2017 | -/ND/ND | Definition A | Definition B | Definition D |
| Li et al[18] 2011 | ND/ND/- | Definition A | Definition C | Definition D |
| Park et al[19] 2014 | -/-/- | ND | ND | ND |
| Huang et al[20] 2017 | -/-/- | ND | ND | ND |
Definition A: Gastritis/esophagitis mucosal inflammation, erosion and bleeding were confirmed by endoscopy; Definition B: Vomiting foods taken 4 to 6 h before, or gastric residue was still great than 200 mL after empty stomach more than 8 h; Definition C: Patients still need nasogastric tube for more than 10 d after surgery; Definition D: The criteria included one of the four following conditions: chronic upper abdominal pain, postprandial fullness, persistent nausea, and intermittent vomiting worsened by eating. ND: No definition.