136 Open Communications 10 - Urogynecology (11:00 AM – 12:00 PM) 11:14 AM – GROUP A Complications of Prophylactic Ureteral Localization Stents Placement for Gynecologic and Pelvic Surgeries Guha P,* ,1 Cardoza F, 1 Pham M, 2 Christopher DC, 1 Dinh T, 1 Chen A, 1 Paul PD 1 . 1 Gynecologic Surgery, Mayo Clinic, Jacksonville, FL; 2 Department of Biostatistics, University of South Florida, Tampa, FL * Corresponding author. Objective: Prophylactic ureteral localization stents may aid in intraopera- tive identification and detection of suspected ureteral injury during complex gynecologic and pelvic surgeries. The objective of the study was to evalu- ate the incidence of complications after stent placement during gynecologic cases. Design: A retrospective review (Canadian Task Force classification II-2). Settings: Department of Gynecologic surgery, Mayo Clinic, Florida. Patients: 982 patients who underwent cystoscopy and prophylactic stents placement in benign, urogynecologic and gynecologic oncology surgeries over a span of 10 years (September 2007 - September 2017). Interventions: Bilateral 5 French ×70-cm flexible open tip TigerTail® (Bard Medical Division, Covington, GA) stents were placed with or without use of guidewire, with no fluoroscopy. Measurements/Results: 982 patients (mean age of 57.12 years and mean BMI of 28. 52) underwent prophylactic ureteral stenting. 344 cases (35%) were benign gynecologic surgeries, 478 cases (48.7%) were urogynecology and 160 cases (16.3%) were Gynecologic Oncology cases. A guidewire was used in 80 cases (8.15%). 53 Patients (5.3%) experienced urinary tract com- plications, of which 46 cases (4.68%) were urinary tract infections (UTI)(Clavien-Dindo grade 2). There were 3 cases of pyelonephritis, 4 cases of acute urinary retention and 1 case of ureteral obstruction secondary to blood clot (Clavien-Dindo grade 3b). Factors increasing the risk of UTI were urogynecologic surgeries (OR 2.89, 95% CI, 1.35 - 6.16), previous pelvic surgery (OR 2.13, 95% CI 0.89 - 5.09), BMI >25 (OR = 1.05, 95% CI 1.01 - 1.09), guidewire use (OR 0.39, 95% CI 0.11 - 1.44) and history of chronic UTI (OR 10.26, 95% CI 1.83 - 57.41). There were no cases of ureteral perforation. Conclusions: The incidence of 30 days significant iatrogenic urinary tract complications during prophylactic stent placement is low. It is a safe tech- nique in experienced hands. 137 Open Communications 10 - Urogynecology (11:00 AM – 12:00 PM) 11:21 AM – GROUP A The Impact of Bariatric Surgery on Pelvic Floor Dysfunctions: A Systematic Review Montenegro ML, 1 Slongo H, 1 Minassian VA, 2 Tavakkoli A, 3 Teatin-Juliato CR, 1 Oliveira Brito LG* ,1 . 1 Obstetrics and Gynecology, University of Campinas/CAISM, Campinas, Brazil; 2 Obstetrics and Gynecology, Brigham and Womens Hospital, Harvard Medical School, Boston, MA; 3 Surgery, Brigham and Womens Hospital, Harvard Medical School, Boston, MA * Corresponding author. Objective: To determine the effect of bariatric surgery (BS) on the preva- lence of pelvic floor dysfunctions (PFD). Design: Systematic review (PROSPERO registration CRD42017068452). Settings: Multiple academic and private centers. Patients: Women with morbid obesity. Interventions: Literature search was performed using PubMed, Scopus and Scielo databases for all publications related to BS and PFD, with no lan- guage restrictions from inception to December 2017. Two authors screened for study eligibility and extracted data. Only prospective cohorts that as- sessed PFD before and after bariatric surgery were included. Measurements/Results: Search strategy retrieved 294 results and 28 studies were included for full analysis and 15 studies (n = 2,635 patients) selected for final analysis; main reasons for exclusion were: missing data before and after BS (n = 9), no separate data between men and women that underwent BS (n = 3) and a study without patient information before BS (n = 1). Laparoscopic Roux-en-Y gastric bypass was the most performed (63.5%) surgical technique. Age range, mean BMI and mean follow-up period were, respectively: 38.8–48.8 years, 45.49 kg/m 2 and 13.4 months. Urinary incontinence (UI) was investigated in 13 studies, followed by fecal incontinence (FI) (n = 7) and pelvic organ prolapse (POP) (n = 5). Pooled analysis (14 studies) showed that women had a mean BMI reduc- tion of 13.92 kg/m 2 after treatment. Mean UI and POP prevalence dropped significantly from 62.91% to 28.41% and from 34.08% to 23.86%, respec- tively. Conversely, mean FI prevalence did not change (difference = 0.75%) before and after treatment. Standardized questionnaires (PFDI-20 and PFIQ- 7) demonstrated a score reduction, respectively (3.34 and 10.43) in three studies. Conclusions: BS has a significant impact in reducing UI and POP, but not FI symptoms in obese women. 138 Open Communications 10 - Urogynecology (11:00 AM – 12:00 PM) 11:32 AM – GROUP B Postoperative Outcomes in Patients Undergoing Laparoscopic Sacrocolpopexy with or without Concomitant Hysterectomy Tappy EE,* ,1 Tyan P, 1 Robinson HN, 2 Gu A, 2 Wei C, 2 Dessie S 3 . 1 Obstetrics and Gynecology, George Washington School of Medicine and Health Sciences, Washington, DC; 2 Department of Medicine, George Washington School of Medicine and Health Sciences, Washington, DC; 3 Obstetrics and Gynecology, Urogynecology, George Washington School of Medicine and Health Sciences, Washington, DC * Corresponding author. Objective: Women in the US have a 13% lifetime risk of undergoing surgery for pelvic organ prolapse (POP). Minimally invasive surgery is increasing- ly common, but controversy exists on whether to perform concomitant hysterectomy. We compared surgical characteristics and 30-day postoper- ative outcomes in patients undergoing laparoscopic sacrocolpopexy with and without concomitant hysterectomy. Design: Retrospective cohort study. Settings: Hospitals participating in the American College of Surgeons Na- tional Surgical Quality Improvement Program (ACS-NSQIP). Patients: Women in the ACS-NSQIP database undergoing sacrocolpopexy with or without hysterectomy from 2005 to 2016. Interventions: Laparoscopic sacrocolpopexy (LSC-SC) alone, or with total laparoscopic hysterectomy (TLH), or laparoscopic supracervical hysterec- tomy (LSCH) for POP. Measurements/Results: Overall, 1885 women met inclusion criteria. A total of 692 (36.7%) underwent LSC-SC alone, 767 (40.7%) with TLH Table 2 S55 Abstracts / Journal of Minimally Invasive Gynecology 25 (2018) S1–S256