[Risk Factors for Wound Healing of Infective Surgical Incision after Radical Cystectomy in Patients of Muscle Invasive Bladder Cancer]

Objective: To evaluate the risk factors for wound healing of infective surgical incision in patients of muscle invasive bladder cancer undergoing radical cystectomy.

Methods: This study retrospectively collected clinical data of the patients who received radical cystectomy and experienced incisional infection after operation between January 2009 and December 2016. The patients were divided into early healing group and delayed healing group (the healing time is less or more than 14 d after operation). The risk factors for wound healing and infection were analyzed by single factor and multivariate logistic regression.

Results: A total of 171 patients with wound infection after radical cystectomy were included in the study. The average time of wound healing time was (17.9±16.9) d. There were 118 and 53 patients in early healing group and delay healing group respectively. Age, body mass index (BMI), operative incision type, preoperative albumin level, diabetes mellitus, infection wound size, infection wound with sinus, postoperative intestinal fistula and urinary fistula were statistically significant differences between the two groups (P<0.05).Univariate logistic regression analysis indicated that male, older than 65 yr., T₄ stage, Type-Ⅲ surgical incision (infective incision), low preoperative albumin level (<30 g/L), hemoglobin level (<90 g/L), diabetes, wound size (>30 mm), intestinal fistula, urinary fistula were risk factors for delayed wound-healing. Multivariate logistic regression analysis revealed that Type-Ⅲ surgical incision and wound size (>30 mm) were independent risk factors for delayed wound healing.

Conclusion: Type-Ⅲ surgical incision and the size of wound (>30 mm) are independent risk factors for delayed wound healing after radical cystectomy in bladder cancer patients.