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Background: Laparoscopic rectal resection may cause various surgical complications including perineal hernia and adhesive small-bowel obstruction. Pelvic peritoneum reconstruction (PPR) could prevent those complications. The aim of the study is to evaluate the short-term clinical, technical and safety outcomes of PPR using the barbed suture in laparoscopic rectal resection. Methods: This is a retrospective cohort study conducted in Chengdu second’s people hospital. Between January 2014 and December 2019, a total of 402 patients who underwent curative surgery for rectal cancer in Chengdu Second People’s Hospital were enrolled in the study. Among them, 216 patients who underwent laparoscopic rectal resection with PPR were allocated into the experimental group, and 186 patients who underwent laparoscopic rectal resection without PPR were allocated into control group. All the patients received standard preoperative and postoperative treatments. Observational indicators (1) surgical and postoperative conditions; (2) postoperative pathological examination. (3) postoperative complications. The data were represented by X ± s. t-test and X2 test were used for counting data. Results (1) Surgery condition: all patients in the two groups underwent successful surgery without conversion to open surgery. There were no differences between the two groups in terms of surgical approach, resection margin, tumor size, postoperative T-stage, postoperative N-stage, positive lymph nodes, harvest lymph nodes, perineal wound infection, perineal hernia, postoperative pneumonia, postoperative hemorrhage, presacral fluid, or abscess. The operative time, blood loss, the incidence of anastomotic leakage, and small-bowel obstruction showed a significant difference between the two groups. Conclusion We hypothesized that pelvic peritoneum reconstruction with barbed suture could improve the efficiency of intracorporeal closure of the pelvic cavity after in laparoscopic rectal resection, which can significantly reduce postoperative perineal-related complications. Further, we expect that use of the barbed sutures will reduce intra-operative stress on the endoscopic surgeon.

Background Postoperative infectious complications (ICs) after surgery for colorectal cancer (CRC) increase in-hospital deaths and decrease long-term survival. However, the methodology for IC preoperative and intraoperative risk assessment has not yet been established. We aimed to construct a risk model for IC after surgery for CRC. Methods Between January 2016 and June 2020, a total of 593 patients who underwent curative surgery for CRC in Chengdu Second People’s Hospital were enrolled. Preoperative and intraoperative factors were obtained retrospectively. The least absolute shrinkage and selection operator (LASSO) method was used to screen out risk factors for IC. Then, based on the results of LASSO regression analysis, multivariable logistic regression analysis was performed to establish the prediction model. Bootstraps with 300 resamples were performed for internal validation. The performance of the model was evaluated with its calibration and discrimination. The clinical usefulness was assessed by decision curve analysis (DCA). Results A total of 95 (16.0%) patients developed ICs after surgery for CRC. Chronic pulmonary diseases, diabetes mellitus, preoperative and/or intraoperative blood transfusion, and longer operation time were independent risk factors for IC. A prediction model was constructed based on these factors. The concordance index (C-index) of the model was 0.761. The calibration curve of the model suggested great agreement. DCA showed that the model was clinically useful. Conclusion Several risk factors for IC after surgery for CRC were identified. A prediction model generated by these risk factors may help in identifying patients who may benefit from perioperative optimization.