Tobacco use as a risk factor for reoperation in patients with stress urinary incontinence: a multi-institutional electronic medical record database analysis.

INTRODUCTION AND HYPOTHESIS: Recurrence rates of stress urinary incontinence after surgery are reported to be between 8 to 15%. Both surgical technique and non-surgical risk factors have been shown to affect post-operative outcomes. Tobacco use is a possible risk factor that may increase the surgical failure rate, however, there are currently conflicting reports in the literature regarding the affect of tobacco use on surgical outcomes. Our objective is to evaluate the effect of tobacco use on the risk of repeat surgery for stress urinary incontinence (SUI). METHODS: We performed a retrospective cohort analysis using a de-identified clinical database from a large multi-institution electronic health records data web application EPM:ExploreTM (Explorys Inc, Cleveland, Ohio) to identify women with and without a history of tobacco use who underwent reoperation for stress urinary incontinence within 2 years of the first surgery. We then evaluated previously described risk factors for reoperation: diabetes mellitus (DM), pelvic organ prolapse (POP), anti-muscarinic (AM) use at initial surgery, obesity, and advanced age on rate of reoperation and the impact of tobacco use on these risk factors. RESULTS: Tobacco use was associated with an increased rate of a second surgery for SUI (OR=1.43, p <0.001), as was anti-muscarinic use (OR = 1.68, p<0.001), DM (OR = 1.21, p = 0.005), age >50 years (OR= 1.16, p = 0.040), and BMI > 30 kg/m2 (OR = 2.97 p<0.001). The odds of a second surgery for SUI in patients who used tobacco and anti-muscarinic medications or had pelvic organ prolapse were lower when compared to non-users. The odds of a second surgery for SUI were higher in patients who used tobacco and had asthma when compared to non-users who had asthma. CONCLUSIONS: Tobacco increases the overall risk of second surgery for SUI, however, in patients with specific risk factors, tobacco use is associated with a decrease risk of reoperation.

Teaching robotic surgery skills: comparing the methods of generalists and subspecialists.

BACKGROUND: To compare opinions of general and subspecialty obstetricians and gynecologists regarding teaching robotic surgery (RS) to residents. METHODS: After obtaining IRB approval, 2189 gynecologic surgeons trained on the DaVinci Surgical System® (Intuitive Surgical, Sunnydale, CA) were asked to complete an online survey. Anonymous responses were obtained and compared using the chi-squared test, including opinions on training residents in RS. RESULTS: Of these 303 respondents, 161 practiced general obstetrics and gynecology ('generalists'), and 138 were self-described 'subspecialists' (+/- fellowship training). The majority of subspecialists (82%) taught residents, and 63% allowed resident participation. Only 44% of generalists taught residents, and 36% allowed participation. Regarding ideal RS training time, generalists favored residency (39%), while subspecialists favored fellowship. (46%, P < 0.001) CONCLUSIONS: While many generalists and subspecialists incorporate training residents into their robotic cases, there is still disparity regarding the extent of participation. Standardized training curriculums should be a goal of residencies with RS.

Effect of estrogen replacement on the histologic response to polypropylene mesh implanted in the rabbit vagina model.

OBJECTIVE: The aim of this study was to determine the effect of estrogen replacement after ovariectomy on the histologic response to polypropylene mesh implanted in rabbit vagina. STUDY DESIGN: Thirty rabbits were assigned to 5 groups: sham laparotomy, ovariectomy, ovariectomy-preoperative estrogen, ovariectomy-postoperative estrogen, or ovariectomy-preoperative and postoperative estrogen. Rabbits underwent sham surgery or ovariectomy and were infused with vehicle or 17beta-estradiol (200 microg/d) for 4 weeks ("preoperative" estrogen). Polypropylene mesh was implanted in the posterior vaginal wall, and rabbits were infused with vehicle or "postoperative" estrogen for an additional 8 weeks. Grafts were harvested and underwent histologic evaluation. RESULTS: Vaginal atrophy in ovariectomized rabbits was reversed by estrogen replacement. Scores for inflammation (P = .33) and neovascularization (P = .23) at the graft site were not different among estrogen replacement groups, but estrogen administration was associated with increased collagen deposition (P = .005). CONCLUSION: Estrogen replacement administered for 8 weeks postoperatively increases collagen deposition into polypropylene mesh.