A Comparative Study of Hand-Sewn and Stapled Anastomosis in Gastrointestinal Surgeries

Background Bowel anastomosis is a key part of gastrointestinal surgery where two sections of the intestines are connected. It is a critical step as it restores the digestive tract's continuity after removing damaged or diseased bowel. Stapler devices are a new method that helps connect bowel loops faster and with less tissue damage. This study aimed to evaluate and compare the safety and effectiveness of stapled anastomosis versus hand-sewn anastomosis in surgeries involving the bowel. Methods In this prospective non-randomized study, the study population included 60 patients with various gastrointestinal surgeries admitted to our institution from August 2022 to June 2024 within a single unit. The inclusion criteria included all patients aged over 18 years who underwent surgeries such as gastrojejunostomy, hemicolectomy, and small bowel resection with anastomosis. The exclusion criteria were age under 18, pregnancy, and immunocompromised states. Patients were divided into two groups based on how their digestive tract was reconstructed: 28 had stapled anastomoses and 32 had hand-sewn anastomoses, either as elective or emergency surgery. We examined multiple outcomes such as surgery duration in hours, time until bowel function returned post surgery, length of hospital stay in days, anastomotic leak rate, albumin levels to leak rate, post-surgery pain, and surgical site infection (SSI) rate for the two groups. Southampton wound grading system and the visual analog scale (VAS) were used to assess the SSI and pain score, respectively. Results When comparing the operation time for the suture and staple groups among the elective cases, the p-value was significant (0.02), with 15 patients having prolonged surgery in the suture group compared to only five in the staple group. Regarding the time until the return of bowel sounds post surgery, the p-value was significant (0.02) for elective cases in the two groups, with nine patients having their bowel sounds returning after the third postoperative day (POD) in the suture group. When comparing the duration of stay in the hospital for elective cases for the staple and suture groups, the p-value was significant (0.04), with eight patients staying after the seventh POD in the suture group. When comparing the leak rates for the two groups for elective cases, the p-value was significant (0.04), with four leaks in the suture group and no leaks in the staple group. On comparing the association between the albumin level and anastomotic leak, the p-value was significant at 0.001 and 0.0006 for the suture and staple groups, respectively, with more leaks associated with an albumin level of <3 mg/dl. When comparing pain scores of the suture and staple groups separately in elective and emergency settings, the p-values were both 0.4, which is not significant. Among the elective cases comparing SSIs for the suture and staple groups, the p-value was significant (0.04), with six patients having SSIs in the suture group compared to one patient in the staple group. Among the emergency cases, when comparing SSIs for the suture and staple groups, the p-value was not significant (0.1). Conclusion In elective surgeries, stapled anastomosis reduces surgery time, accelerates bowel function recovery, enables earlier discharge, and lowers anastomotic leak rates compared to sutures. The staples group showed no difference from sutures in the leak rate to albumin levels and pain while offering superior SSI prevention.