Emergency surgery versus elective surgery after reduction for patients with incarcerated groin hernias.

Background: The feasibility and potential advantages of elective surgery after manual reduction of incarcerated hernia (IH) have not been investigated in detail. Therefore, the aim of this retrospective study was to compare perioperative outcomes of emergency surgery to those of elective surgery after reduction of IH.

Methods: A total of 112 patients were preoperatively diagnosed with IH between January 2010 and April 2019. Patients were divided into an emergency group (76 patients underwent emergency surgery: 21 patients received intestinal resection and 55 patients did not) and a reduction group (36 patients underwent elective surgery after reduction and none required intestinal resection). The outcomes between the groups were compared. A subgroup analysis was also performed on the patients who did not require intestinal resection.

Results: In patients who did not undergo intestinal resection, the post-operative length of stay was significantly shorter in the reduction group than in the emergency group (8.0 versus 4.3 days, P < 0.001). The percentage of mesh prosthesis cases was significantly higher in the reduction group (74.4% versus 100%, P = 0.001). The incidence of post-operative complications was significantly lower in the reduction group (45.4% versus 13.8%, P < 0.001). In all 112 patients, femoral hernia (P = 0.013, odds ratio = 4.76) and emergency surgery (P = 0.008, odds ratio = 4.49) were found to be independent risk factors for developing post-operative complications.

Conclusions: Elective surgery after reduction showed more favourable outcomes in selected patients. Moreover, emergency surgery was an independent predictor for post-operative complications.