To analyze the risk factors of recurrence after laparoscopic trans-abdominal preperitoneal (TAPP) inguinal hernia repair and establish a risk prediction model.

The clinical data of 230 patients with inguinal hernia treated by TAPP in People's Hospital of Tongling and Anqing Municipal Hospital from March 2018 to July 2020 were retrospectively analyzed. Univariate analysis and Logistic multivariate regression analysis were used to screen the risk factors for recurrence after TAPP inguinal hernia repair, so as to build a risk prediction model and verify the model.

Number of cases of operating TAPP (OR=3.337, 95% CI: 1.357-8.401), intraoperative blood loss >10 ml (OR=2.925, 95% CI: 1.027-8.328), operation time >2 h (OR=2.675, 95% CI: 1.018-7.031), the maximum diameter of hernia sac >5 cm (OR=2.675, 95% CI: 1.018-7.031) and incarcerated hernia (OR=7.329, 95% CI: 2.162-24.56) were independent risk factors for recurrence after TAPP inguinal hernia repair. Based on five independent risk factors, a risk nomogram model was established to predict postoperative recurrence, and the prediction accuracy of the model was verified. The actual value was close to the predicted value. The consistency index C-index was 0.833 (95% CI: 0.814-0.851), indicating that the prediction accuracy of the model is good.

Number of cases of operating TAPP, intraoperative blood loss >10 ml, operation time >2 h, the maximum diameter of hernia sac >5 cm and incarcerated hernia are independent risk factors for recurrence after TAPP inguinal hernia repair. The established risk prediction model has high accuracy, which can guide medical staff to analyze the risk degree of postoperative recurrence of patients, and has high clinical application value.