The impact of resident training on robotic operative times: is there a July Effect?

It is unknown whether the July Effect (a theory that medical errors and organizational inefficiencies increase during the influx of new surgical residents) exists in urologic robotic-assisted surgery. The aim of this study was to investigate the impact of urology resident training on robotic operative times at the beginning of the academic year. A retrospective chart review was conducted for urologic robotic surgeries performed at a single institution between 2008 and 2019. Univariate and multivariate mix model analyses were performed to determine the association between operative time and patient age, estimated blood loss, case complexity, robotic surgical system (Si or Xi), and time of the academic year. Differences in surgery time and non-surgery time were assessed with/without resident presence. Operative time intervals were included in the analysis. Resident presence correlated with increased surgery time (38.6 min (p < 0.001)) and decreased non-surgery time (4.6 min (p < 0.001)). Surgery time involving residents decreased by 8.7 min after 4 months into the academic year (July-October), and by an additional 5.1 min after the next 4 months (p = 0.027, < 0.001). When compared across case types stratified by complexity, surgery time for cases with residents significantly varied. Cases without residents did not demonstrate such variability. Resident presence was associated with prolonged surgery time, with the largest effect occurring in the first 4 months and shortening later in the year. However, resident presence was associated with significantly reduced non-surgery time. These results help to understand how new trainees impact operating room times.

National prevalence of IC/BPS in women and men utilizing veterans health administration data.

Importance: Interstitial cystitis/bladder pain syndrome (IC/BPS) is an immense burden to both patients and the American healthcare system; it is notoriously difficult to diagnose. Prevalence estimates vary widely (150-fold range in women and >500-fold range in men). Objectives: We aimed to create accurate national IC/BPS prevalence estimates by employing a novel methodology combining a national population-based dataset with individual chart abstraction. Study design: In this epidemiological survey, all living patients, with ≥2 clinic visits from 2016 to 2018 in the Veterans Health Administration, with an ICD-9/10 code for IC/BPS (n = 9,503) or similar conditions that may represent undiagnosed IC/BPS (n = 124,331), were identified (other were controls n = 5,069,695). A detailed chart review of random gender-balanced samples confirmed the true presence of IC/PBS, which were then age- and gender-matched to the general US population. Results: Of the 5,203,529 patients identified, IC/BPS was confirmed in 541 of 1,647 sampled charts with an IC/BPS ICD code, 10 of 382 charts with an ICD-like code, and 3 of 916 controls. After age- and gender-matching to the general US population, this translated to national prevalence estimates of 0.87% (95% CI: 0.32, 1.42), with female and male prevalence of 1.08% (95% CI: 0.03, 2.13) and 0.66% (95% CI: 0.44, 0.87), respectively. Conclusions: We estimate the prevalence of IC/BPS to be 0.87%, which is lower than prior estimates based on survey data, but higher than prior estimates based on administrative data. These potentially represent the most accurate estimates to date, given the broader and more heterogeneous population studied and our novel methodology of combining in-depth chart abstraction with administrative data.

Rates of Complications and Reoperation after Myomectomy-the Impact of Surgical Approach: A Statewide Population-based Cohort Study from 2005-2018.

STUDY OBJECTIVE: To assess rates of and factors associated with complications and reoperation after myomectomy. DESIGN: Population-based cohort study. SETTING: All non-Veterans Affairs facilities in the state of California from January 1, 2005, to December 31, 2018. PARTICIPANTS: Women undergoing abdominal or laparoscopic myomectomy for myoma disease were identified from the Office of Statewide Health Planning and Development datasets using appropriate International Classification of Diseases, Ninth and Tenth Revision and Current Procedural Terminology codes. INTERVENTIONS: Demographics, surgery facility type, facility surgical volume, and surgical approach were identified. Primary outcomes included complications occurring within 60 days of surgery and reoperations for myomas. Patients were followed up for over an average of 7.3 years. Univariate and multivariable associations were explored between the above factors and rates of complications and reoperation. All odds ratios (ORs) are adjusted ORs. MEASUREMENTS AND MAIN RESULTS: Of the 66 012 patients undergoing myomectomy, 5265 had at least one complication (8.0%). Advanced age, black, Asian race, MediCal and Medicare payor status, academic facility, and medical comorbidities were associated with increased odds of a complication. Minimally invasive myomectomy (MIM) was associated with decreased complications compared with abdominal myomectomy (AM) (OR, 0.29; 95% confidence interval [CI], 0.25-0.33; p <.001). Overall, 17 377 patients (26.3%) underwent reoperation. Medicare and MediCal payor status and medical comorbidities were associated with increased odds of a repeat surgery. Reoperation rates were higher in the MIM group over the entire study period (OR, 2.33; 95% CI, 1.95-2.79; p <.001). However, the odds of reoperation after MIM decreased each year (OR, 0.93; 95% CI 0.92-0.95; p <.001), with the odds of reoperation after AM surpassing MIM in 2015. CONCLUSION: This study identifies outcome disparities in the surgical management of myomas and describes important differences in the rates of complications and reoperations, which can be used to counsel patients on surgical approach. These findings suggest that MIM can be considered a lasting and safe approach in properly selected patients.

Manufacturer and User Facility Device Experience Reporting of Events Related to Transvaginal Mesh: Understanding the Data.

OBJECTIVE: The aim of this study was to examine potential bias in reports to the Manufacturer and User Facility Device Experience (MAUDE) database involving vaginal mesh by identifying the party submitting the report, the nature of the complaints, and whether the reports were edited. METHODS: All reports submitted to the MAUDE database involving synthetic transvaginal mesh from January 2000 through December 2017 (40,266 safety reports) were identified. A random 2% sample (900) of these reports was reviewed in depth to determine the specific relevant details, including reporter type (patient, manufacturer, lawyer) and details of the complaint/injury. RESULTS: Of the 40,226 reports to MAUDE identified, 28,473 (70.7%) were sling reports, and 11,793 (29.3%) described mesh products augmenting pelvic organ prolapse repair. Of the 900 reports reviewed in depth, 46%, 41%, 10%, and 2% of entries were reported by the manufacturer, attorney, health care provider, and patients, respectively. In the 4 years after submission, 18.6% of reports were modified at least once. CONCLUSIONS: The MAUDE database allows physicians, manufacturers, and patients to immediately report adverse events experienced due to medical devices. While this database is an important means to identify potential danger to patients, any individual can file a report and, thus, it should not be the sole source of evidence to consider when assessing device safety. Further, the MAUDE database provides no information into the total number of cases performed without complication.

Demographic Differences and Disparities in the Misdiagnosis of Interstitial Cystitis/Bladder Pain Syndrome in a National Cohort of VA Patients.

OBJECTIVE: To explore association between misdiagnosis of IC/BPS and demographics. Interstitial cystitis/bladder pain syndrome (IC/BPS) is associated with significant diagnostic uncertainty, resulting in frequent misdiagnosis as there is little known about the potential impact of key demographic factors. METHODS: All patients in the VA system between 1999-2016 were identified by ICD-9/10 codes for IC/BPS (595.1/N30.10) (n = 9,503). ICD code accuracy for true IC/BPS (by strict criteria) was assessed by in-depth chart abstraction (n = 2,400). Associations were explored between rates of misdiagnosis and demographics. RESULTS: IC/BPS criteria were met in only 651 (48.8%) of the 1,334 charts with an ICD code for IC/BPS reviewed in depth. There were no differences in the misdiagnosis rate by race (P=.27) or by ethnicity (P=.97), after adjusting for differences in age and gender. In IC/BPS-confirmed cases, female patients were diagnosed at a younger age than males (41.9 vs. 58.2 years, P<.001). Black and Hispanic patients were diagnosed at a younger age compared to White (41.9 vs. 50.2 years, P<.001) and non-Hispanic patients, respectively (41.1 vs. 49.1 years, P=.002). CONCLUSION: There was a high rate of misdiagnosis of IC/BPS overall, with only 48.8% of patients with an ICD code for IC/BPS meeting diagnostic criteria. There were no significant associations between diagnostic accuracy and race/ethnicity. Black and Hispanic patients were more likely to receive a diagnosis of IC/BPS at a younger age, suggesting there may be differing natural histories or presentation patterns of IC/BPS between racial/ethnic groups.

Supracervical Hysterectomy Is Protective against Mesh Complications after Minimally Invasive Abdominal Sacrocolpopexy: A Population-Based Cohort Study of 12,189 Patients.

PURPOSE: Although minimally invasive (robotic or laparoscopic) abdominal sacrocolpopexy (MISC) has become the new gold standard for durable pelvic organ prolapse repair after the vaginal mesh controversy, current literature is limited. Our objective was to study reoperation for mesh complications after MISC. MATERIALS AND METHODS: All women undergoing MISC in California from January 2012 to December 2018 were identified from Office of Statewide Health Planning and Development data sets using appropriate ICD-9/10 (International Classification of Diseases 9th/10th Revision) and CPT® (Current Procedural Terminology) codes. Univariate and multivariable analyses were performed to assess associations between patient demographics, surgical details and our primary outcomes: rates of reoperation for a mesh complication. RESULTS: Of 12,189 women undergoing MISC 8,398 (68.9%) had concomitant hysterectomy. Total hysterectomy (TH) and supracervical hysterectomy (SCH) were performed in 5,027 (41.2%) and 3,371 (27.6%) cases, respectively. Reoperation rates for mesh complications were lower after SCH vs TH (overall: 0.7%, mean followup time 1,111 days vs 3.1%, mean followup time 1,095 days, p <0.001; subcohort with at least 4 years of followup: 2.1% vs 8.9%, p <0.001). Additionally, mesh complication rates were higher even if TH was performed remotely, as compared to concomitant SCH (5.2% vs 0.7%, p <0.001). The increased risk for reoperation due to mesh complications after TH was preserved on multivariable analysis (OR 4.20, 95% CI 2.72‒6.50, p <0.001). CONCLUSIONS: Concomitant TH at time of MISC is associated with a significantly higher rate of mesh complication as compared to SCH. The increased risk of a mesh complication associated with TH is present even if the TH was performed prior to the MISC.

Racial Disparities in Outcomes of Women Undergoing Myomectomy.

OBJECTIVE: To assess the association of racial and socioeconomic factors with outcomes of abdominal myomectomies. METHODS: All women undergoing abdominal myomectomy in California from 2005 to 2012 were identified from the OSHPD (Office of Statewide Health Planning and Development) using appropriate International Classification of Diseases and Current Procedural Terminology codes. Demographics, comorbidities, surgical approaches, and complications occurring within 30 days of the procedure were identified. Multivariate associations were assessed with mixed effects logistic regression models. RESULTS: The cohort of 35,151 women was racially and ethnically diverse (White, 38.8%; Black, 19.9%; Hispanic, 20.3%; and Asian, 15.3%). Among all procedures, 33,906 were performed through an open abdominal approach, and 1,245 were performed using a minimally invasive approach. Proportionally, Black patients were more likely than White patients to have open procedures, and open approaches were associated with higher complication rates. Overall, 2,622 (7.5%) women suffered at least one complication. Although severe complications did not vary by race or ethnicity, Black (9.0%), Hispanic (7.9%), and Asian (7.5%) patients were more likely to suffer complications of any severity compared with White patients (6.7%, P<.001). As compared with patients with private insurance (6.4%), those with indigent payer status (Medicaid [12.1%] and self-pay [11.1%]) had higher complication rates (P<.001). Controlling for all factors, Black and Asian patients were more likely to suffer complications compared with White patients. CONCLUSION: The overall complication rate after abdominal myomectomy was 7.5%. Comorbidities, an open approach, and indigent payer status were associated with increased complication risk. Controlling for all factors, Black and Asian patients still had increased risks of complications.

Comorbidities in a Nationwide, Heterogenous Population of Veterans with Interstitial Cystitis/Bladder Pain Syndrome.

OBJECTIVE: To examine the prevalence of comorbid conditions in a nationwide population of men and women with IC/BPS utilizing a more heterogeneous sample than most studies to date. METHODS: Using the Veterans Affairs Informatics and Computing Infrastructure, we identified random samples of male and female patients with and without an ICD-9/ICD-10 diagnosis of IC/BPS. Presence of comorbidities (NUAS [chronic fatigue syndrome, fibromyalgia, irritable bowel syndrome, migraines], back pain, diabetes, and smoking) and psychosocial factors (alcohol abuse, post-traumatic stress disorder, sexual trauma, and history of depression) were determined using ICD-9 and ICD-10 codes. Associations between these variables and IC/BPS status were evaluated while adjusting for the potential confounding impact of race/ethnicity, age, and gender. RESULTS: Data was analyzed from 872 IC/BPS patients (355 [41%] men, 517 [59%] women) and 558 non-IC/BPS patients (291 [52%] men, 267 [48%] women). IC/BPS patients were more likely than non-IC/BPS patients to have a greater number of comorbidities (2.72+/-1.77 vs 1.73+/-1.30, P < 0.001), experience one or more NUAS (chronic fatigue syndrome, fibromyalgia, irritable bowel syndrome, and migraines) (45% [388/872] vs. 18% [101/558]; P < 0.001) and had a higher prevalence of at least one psychosocial factor (61% [529/872] v. 46% [256/558]; P < 0.001). Differences in the frequencies of comorbidities between patients with and without IC/BPS were more pronounced in female patients. CONCLUSION: These findings validate the findings of previous comorbidity studies of IC/BPS in a more diverse population.

Risk Factors for Intraoperative Bladder Perforation at the Time of Midurethral Sling Placement.

OBJECTIVE: To evaluate patient-specific and perioperative factors that may be predictive of bladder perforation during midurethral sling placement. METHODS: A retrospective chart review of women who underwent a midurethral sling procedure at our institution between 2013 and 2017 was completed. All cases with bladder perforation were included. Patient demographics and perioperative factors were explored for associations with perforation. Bivariate analysis was used to compare baseline characteristics between those with and without perforation. Logistic regression modeling was used to identify predictors of perforation and associations between bladder perforation and postoperative sequelae. RESULTS: Four hundred and ten women had a urethral sling procedure at our institution between 2013 and 2017. Of these, 35 (9%) had evidence of bladder perforation on cystoscopy. This rate was higher for retropubic slings (15%) compared to transobturator slings (2%). Those with a perforation were younger (54 vs 61 years, P= .004) and had a lower average BMI (24.1 kg/m2 vs 26.3 kg/m2, P = .022). Other risk factors included lack of pre-existing apical prolapse (11% vs 4%, P = .012) and concomitant urethrolysis (27% vs 8%, P = .024). In multivariable analysis, age, BMI, and sling type were significantly associated with perforation. In univariate analysis, perforation was associated with postoperative lower urinary tract symptoms (OR 2.3, P = .21) and urinary tract infection within 30 days of surgery (OR 2.2, P = .047). CONCLUSIONS: Intraoperative bladder perforation was associated with younger patient age and lower BMI. Additionally, bladder perforation is a risk factor for postoperative urinary tract infection and lower urinary tract symptoms.

Predictors of Colpocleisis Outcomes in an Older Population Based Cohort.

PURPOSE: Colpocleisis is an obliterative surgical option for women with pelvic organ prolapse that is often performed in a frail population. However, because outcomes remain largely unknown we aimed to assess the durability and perioperative safety of colpocleisis in a large population based cohort. MATERIALS AND METHODS: All women undergoing colpocleisis and other pelvic organ prolapse repairs in California (2005-2011) were identified using the Office of Statewide Health Planning and Development data sets. Durability was defined as the absence of future pelvic organ prolapse repair after index repair for the duration of the data sets. Thirty-day morbidity was assessed by identifying readmissions, repeat surgeries and complications. A metric to assess frailty in large administrative databases was applied to assess the impact of frailty on outcomes. Colpocleisis outcomes were compared to other types of pelvic organ prolapse repairs by developing propensity score matched groups. RESULTS: Among the 2,707 women undergoing colpocleisis, reoperation for prolapse occurred in 47 (1.8%). At least 1 complication occurred in 11.1% of the cohort, with serious complications occurring in 2%. Frail patients were more likely to experience any complication (23.3% vs 10.3%, p <0.01) and a serious complication (5.0% vs 1.8%, p=0.02) and was the best predictor of morbidity. Colpocleisis was associated with a more durable repair (overall failure 1.8% vs 3.5%, p <0.01) with no difference in complication rates as compared to the matched cohort. CONCLUSIONS: Colpocleisis provides a more durable outcome than reconstructive pelvic organ prolapse repairs without increased perioperative morbidity. Frailty is a better predictor than age for perioperative complications after colpocleisis.

Outcomes of Prophylactic Mid-Urethral Sling at the Time of Robotic Sacrocolpopexy.

OBJECTIVE: To compare outcomes of patients who underwent robotic sacrocolpopexy (RSC) with and without concomitant mid-urethral sling (MUS) placement for prophylaxis or treatment of preoperative stress urinary incontinence (SUI) METHODS: We performed a retrospective review of all patients without prior incontinence procedures who underwent RSC with or without MUS placement by 3 surgeons (JA, LA, KE) at a single institution from 2012 to 2017 for treatment of pelvic organ prolapse. Patients had a MUS placed for either documented SUI or prophylaxis of SUI. We compared patient characteristics, operative details, postoperative outcomes, and complications between the groups. RESULTS: A total of 134 patients were identified. 58 (43%) had a MUS placed for documented SUI, 43 (32%) had prophylactic MUS, and 33 (25%) did not have a MUS placed. There were no differences in baseline characteristics between the 3 groups. Patients who did not have a MUS placed had less estimated blood loss (76.4 vs 63.8 vs 36.9 mL, P = .018) but no difference in operative time (P = .408), length of stay (P = .427), or postoperative urinary retention (P = .988). A total of 4 (7%) patients who had a MUS placed for SUI had persistent SUI postoperatively. There were 2 (5%) patients who had a MUS placed prophylactically and 4 (12%) patients who did not have a MUS that developed de novo SUI. CONCLUSION: In this series, we demonstrate the safety and efficacy of prophylactic MUS placement at the time of RSC. Randomized studies evaluating concomitant prophylactic sling at time of robotic sacrocolpopexy could further guide preoperative patient counseling and decision-making.

Balancing the possibility of needing a future incontinence procedure versus a future urethral sling revision surgery: a tradeoff analysis for continent women undergoing pelvic organ prolapse surgery.

INTRODUCTION AND HYPOTHESIS: Although urinary incontinence surgery has potential benefits such as preventing de novo stress urinary incontinence in women undergoing pelvic organ prolapse (POP) surgery, it comes with the potential cost of overtreatment and complications. We compared future surgery rates in a population cohort of women undergoing vaginal pelvic organ prolapse surgery. METHODS: All women undergoing POP repair in California from 2005 to 2011 were identified from the Office of Statewide Health Planning and Development databases. Rates of repeat surgery in those with and without concomitant urethral sling procedures were compared. To control for confounding effects, multivariate mixed effects logistic regression models were constructed to compare each woman's individualized risk of undergoing either sling revision surgery or future incontinence surgery. RESULTS: In the cohort, 38,456 underwent a sling procedure at the time of POP repair and 42,858 did not. The future surgery rate was higher for sling-related complications in the POP + sling cohort compared with future incontinence surgery in the POP alone cohort (3.5% versus 3.0% respectively, p < 0.001). The difference persisted in multivariate modeling, where most women (60%) are at a higher risk of requiring sling revision surgery compared with needing a future primary incontinence procedure (40%). CONCLUSIONS: Women who undergo vaginal prolapse repair without an incontinence procedure are at a low risk of future incontinence surgery. Women without urinary incontinence who are considering vaginal POP surgery should be informed of the risks and benefits of including a sling procedure.

Reoperation rates for pelvic organ prolapse repairs with biologic and synthetic grafts in a large population-based cohort.

INTRODUCTION AND HYPOTHESIS: As the long-term complications of synthetic mesh become increasingly apparent, re-evaluation of alternative graft options for pelvic organ prolapse (POP) repairs is critical. We sought to compare the long-term reoperation rates of biologic and synthetic grafts in POP repair. METHODS: Using the California Office of Statewide Health Planning and Development database, we identified all women who underwent index inpatient POP repair with either a synthetic or biologic graft between 2005 and 2011 in the state of California. ICD-9 and CPT codes were used to identify subsequent surgeries in these patients for either recurrent POP or a graft complication. RESULTS: A total of 14,192 women underwent POP repair with a biologic (14%) or synthetic graft (86%) during the study period. Women with biologic grafts had increased rates of surgery for recurrent pelvic organ prolapse (3.6% vs 2.5%, p = 0.01), whereas women with synthetic grafts had higher rates of repeat surgery for a graft complication (3.0 vs 2.0%, p = 0.02). There were no significant differences between the overall risk of repeat surgery between the groups (5.7% vs 5.6%, p = 0.79). These effects persisted in multivariate modeling. CONCLUSIONS: We demonstrate in a large population-based cohort that biologic grafts are associated with an increased rate of repeat surgery for POP recurrence whereas synthetic mesh is associated with an increased rate of repeat surgery for a graft complication. These competing risks result in an equivalent overall any-cause repeat surgery rate between the groups. These data suggest that neither type of graft should be excluded from use and encourage a personalized risk assessment.

Statewide Success of Staged Sacral Neuromodulation for the Treatment of Urinary Complaints in California (2005-2011).

PURPOSE: Sacral neuromodulation (SNS) is approved by the Food and Drug Administration as a third-line treatment for refractory overactive bladder, idiopathic urinary retention, and fecal incontinence. Prior to implantation of an implantable pulse generator, all patients undergo a trial phase to ensure symptom improvement. The published success rates of progression from the test phase to permanent implant vary widely (range, 24% to >90%). We sought to characterize success rates using a statewide registry. METHODS: Using nonpublic data, we identified SNS procedures using the California Office of Statewide Planning and Development ambulatory surgery database from 2005 to 2011. A successful trial was defined as receiving a stage 2 generator implantation after trial lead placement. Multivariable logistic regression was performed to identify factors associated with staged success. RESULTS: During the study period, 1396 patients underwent a staged SNS procedure, with 962 (69%) subsequently undergoing generator placement. Successful trial rates were 72% for overactive bladder wet, 69% for urgency/frequency, 68% for interstitial cystitis, 67% for neurogenic bladder, and 57% for urinary retention. On multivariate logistic regression, only male sex (odds ratio, 0.51) and urinary retention [odds ratio, 0.54) were significantly associated with lower odds of success, whereas age, race/ethnicity, medical insurance, and placement at an academic or high-volume institution had no association. CONCLUSIONS: The "real world" success rates for staged SNS implantation in California are less than those observed by some academic centers of excellence but better than previously reported for Medicare beneficiaries. Successful trial rates for interstitial cystitis and neurogenic voiding dysfunction are similar to refractory overactive bladder.

Urologic Injury and Fistula After Hysterectomy for Benign Indications.

OBJECTIVE: To explore the rates and risk factors for sustaining a genitourinary injury during hysterectomy for benign indications. METHODS: In this population-based cohort study, all women who underwent hysterectomy for benign indications were identified from the Office of Statewide Health Planning and Development databases in California (2005-2011). Genitourinary injuries were further classified as identified at the time of hysterectomy, identified after the date of hysterectomy; or unidentified until a fistula developed. RESULTS: Of the 296,130 women undergoing hysterectomy for benign indications, there were 2,817 (1.0%) ureteral injuries, 2,058 (0.7%) bladder injuries and 834 (0.3%) genitourinary fistulas (80/834 of which developed after an injury repair). Diagnosis was delayed in 18.6% and 5.5% of ureteral and bladder injuries, respectively. Subsequent genitourinary fistula development was lower if the injury was identified immediately (compared with delayed) for both ureteral (0.7% vs 3.4% odds ratio [OR] 0.28; 95% CI 0.14-0.57) and bladder injuries (2.5% vs 6.5% OR 0.37; 95% CI 0.16-0.83). Indwelling ureteral stent placement alone was more successful in decreasing the risk of a second ureteral repair for immediately recognized ureteral injuries (99.0% vs 39.8% for delayed injuries). With multivariate adjustment, prolapse repair (OR 1.44, 95% CI 1.30-1.58), an incontinence procedure (OR 1.40, 95% CI 1.21-1.61), mesh augmented prolapse repair (OR 1.55, 95% CI 1.31-1.83), diagnosis of endometriosis (OR 1.46, 95% CI 1.36-1.56), and surgery at a facility in the bottom quartile of hysterectomy volume (OR 1.37, 95% CI 1.01-1.89) were all associated with an increased likelihood of a genitourinary injury. An exclusively vaginal (OR 0.56, 95% CI 0.53-0.64) or laparoscopic (OR 0.80, 95% CI 0.75-0.86) approach was associated with lower risk of a genitourinary injury as compared with an abdominal approach. CONCLUSION: Genitourinary injury occurs in 1.8% of hysterectomies for benign indications; immediate identification and repair is associated with a reduced risk of subsequent genitourinary fistula formation.

Payer Type, Race/Ethnicity, and the Timing of Surgical Management of Urinary Stone Disease.

PURPOSE: Surgery for upper tract urinary stone disease is often reserved for symptomatic patients and those whose stone does not spontaneously pass after a trial of passage. Our objective was to determine whether payer type or race/ethnicity is associated with the timeliness of kidney stone surgery. MATERIALS AND METHODS: A population-based cohort study was conducted using the California Office of Statewide Health Planning and Development dataset from 2010 to 2012. We identified patients who were discharged from an emergency department (ED) with a stone diagnosis and who subsequently underwent a stone surgery. Primary outcome was time from ED discharge to urinary stone surgery in days. Secondary outcomes included potential harms resulting from delayed stone surgery. RESULTS: Over the study period, 15,193 patients met the inclusion criteria. Median time from ED discharge to stone surgery was 28 days. On multivariable analysis patients with Medicaid, Medicare, and self-pay coverage experienced adjusted mean increases of 46%, 42%, and 60% in time to surgery, respectively, when compared with those with private insurance. In addition, patients of Black and Hispanic race/ethnicity, respectively, experienced adjusted mean increases of 36% and 20% in time to surgery relative to their White counterparts. Before a stone surgery, underinsured patients were more likely to revisit an ED three or more times, undergo two or more CT imaging studies, and receive upper urinary tract decompression. CONCLUSIONS: Underinsured and minority patients are more likely to experience a longer time to stone surgery after presenting to an ED and experience potential harm from this delay.

Rates and Risk Factors for Future Stress Urinary Incontinence Surgery after Pelvic Organ Prolapse Repair in a Large Population-based Cohort in California.

OBJECTIVES: To determine the rate and risk factors for future stress urinary incontinence (SUI) surgery in a large population-based cohort of previously continent women following pelvic organ prolapse (POP) repair without concomitant SUI treatment. METHODS: Data from the Office of Statewide Health Planning and Development were used to identify all women who underwent anterior, apical, or combined anteroapical POP repair without concomitant SUI procedures in the state of California between 2005 and 2011 with at least 1-year follow-up. Patient and surgical characteristics were explored for associations with subsequent SUI procedures. RESULTS: Of 41,689 women undergoing anterior or apical POP surgery, 1,504 (3.6%) underwent subsequent SUI surgery with a mean follow-up time of 4.1 years. Age (odds ratio [OR] 1.01), obesity (OR 1.98), use of mesh at the time of POP repair (OR 2.04), diabetes mellitus (OR 1.19), white race, and combined anteroapical repair (OR 1.30) were associated with increased odds of future SUI surgery. CONCLUSION: The rate of subsequent surgery for de novo SUI following POP repair on a population level is low. Patient and surgical characteristics may alter a woman's individual risk and should be considered in surgical planning.

Association Between Concomitant Hysterectomy and Repeat Surgery for Pelvic Organ Prolapse Repair in a Cohort of Nearly 100,000 Women.

OBJECTIVE: To evaluate the association of hysterectomy at the time of pelvic organ prolapse (POP) repair with the risk of undergoing subsequent POP surgery in a large population-based cohort. METHODS: Data from the California Office of Statewide Health Planning and Development were used in this retrospective cohort study to identify all women who underwent an anterior, apical, posterior or multiple compartment POP repair at nonfederal hospitals between January 1, 2005, and December 31, 2011, using Current Procedural Terminology and International Classification of Diseases, 9th Revision procedure codes. Women with a diagnosis code indicating prior hysterectomy were excluded, and the first prolapse surgery during the study period was considered the index repair. Demographic and surgical characteristics were explored for associations with the primary outcome of a repeat POP surgery. We compared reoperation rates for recurrent POP between patients who did compared with those who did not have a hysterectomy at the time of their index POP repair. RESULTS: Of the 93,831 women meeting inclusion criteria, 42,340 (45.1%) underwent hysterectomy with index POP repair. Forty-eight percent of index repairs involved multiple compartments, 14.0% included mesh, and 48.9% included an incontinence procedure. Mean follow-up was 1,485 days (median 1,500 days). The repeat POP surgery rate was lower in those patients in whom hysterectomy was performed at the time of index POP repair, 3.0% vs 4.4% (relative risk [RR] 0.67, 95% CI 0.62-0.71). Multivariate modeling revealed that hysterectomy was associated with a decreased risk of future surgery for anterior (odds ratio [OR] 0.71, 95% CI 0.64-0.78), apical (OR 0.76, 95% CI 0.70-0.84), and posterior (OR 0.69, 95% CI 0.65-0.75) POP recurrence. The hysterectomy group had increased lengths of hospital stay (mean 2.2 days vs 1.8 days, mean difference 0.40, 95% CI 0.38-0.43), rates of blood transfusion (2.5% vs 1.5, RR 1.62, 95% CI 1.47-1.78), rates of perioperative hemorrhage (1.5% vs 1.1%, RR 1.32, 95% CI 1.18-1.49), rates of urologic injury or fistula (0.9% vs 0.6%, RR 1.66, 95% CI 1.42-1.93), rates of infection or sepsis (0.9% vs 0.4%, RR 2.12, 95% CI 1.79-2.52), and rate of readmission for an infectious etiology (0.7% vs 0.3%, RR 2.54, 95% CI 2.08-3.10) as compared with those who did not undergo hysterectomy. CONCLUSION: We demonstrate in a large population-based cohort that hysterectomy at the time of prolapse repair is associated with a decreased risk of future POP surgery by 1-3% and is independently associated with higher perioperative morbidity. Individualized risks and benefits should be included in the discussion of POP surgery.

Care Seeking Patterns for Women Requiring a Repeat Pelvic Organ Prolapse Surgery Due to Native Tissue Repair Failure Compared to a Mesh Complication.

OBJECTIVE: To explore patient migration patterns in patients requiring repeat surgery after Pelvic Organ Prolapse (POP) repair as there is a limited understanding of care seeking patterns for repeat surgery after POP repair. We hypothesized that undergoing repeat surgery for a prolapse mesh complication would be associated with an increased incidence of migration to a new facility for care compared to those undergoing repeat surgery for recurrent POP. METHODS: In this retrospective population based study, all females who underwent an index POP repair procedure (with or without mesh) at nonfederal facilities who subsequently underwent a repeat surgery (recurrent prolapse repair or mesh complication) were identified from the Office of Statewide Health Planning and Development for the state of California (2005-2011). The location of index repair and repeat surgery were identified and factors associated with migration were explored. RESULTS: Of the 3,930 women who underwent repeat surgery for either POP recurrence or a mesh complication, 1,331 (33.9%) had surgery at a new facility. Multivariate analysis revealed that mesh complications (odds ratio [OR] 1.28, P = 0.004) or native tissue same compartment recurrence (OR 1.19, P = 0.02) were both associated with increased odds of undergoing surgery at a new facility. Having surgery in a county with multiple centers increased the odds of migration to a new facility for care (OR = 1.33, P < 0.001), unless the initial repair was at a high volume institution (OR = 0.32, P < 0.001). Overall across indications, women changing locations for their second surgery tended to migrate toward select centers in urban areas. CONCLUSION: Women who undergo repeat surgery after POP repair have similar patterns of migration to a new facility irrespective of the indication for surgery.

What Impacts the All Cause Risk of Reoperation after Pelvic Organ Prolapse Repair? A Comparison of Mesh and Native Tissue Approaches in 110,329 Women.

PURPOSE: Several factors are hypothesized to impact the risks of mesh augmented pelvic organ prolapse repair, including 1) the characteristics of the material, 2) surgical experience and 3) patient selection. We present a large, population based approach to explore the impact of these factors on outcomes and describe an ideal mesh use strategy. MATERIALS AND METHODS: Data from the Office of Statewide Health Planning and Development were accessed to identify all women who underwent pelvic organ prolapse repair in California from 2005 to 2011. Multivariate mixed effects logistic regression models were constructed to explore which patient, surgical and facility factors were associated with repeat surgery for a complication due to mesh or recurrent pelvic organ prolapse. RESULTS: A total of 110,329 women underwent pelvic organ prolapse repair during the study period and mesh was used in 16.2% of the repairs. The overall repeat surgery rate was higher in women who underwent mesh repair (5.4% vs 4.3%, p <0.001). However, multivariate modeling revealed that mesh itself was not independently associated with repeat surgery. Rather, repair at a facility where there was a greater propensity to use mesh was independently associated with repeat surgery (highest vs lowest mesh use quartile OR 1.55, p <0.01). Further modeling revealed that the lowest risk occurred when mesh was used in 5% of anterior and 10% of anterior apical repairs. CONCLUSIONS: Our findings demonstrate that mesh is not independently associated with an increase in the rate of complications of pelvic organ prolapse repair on a large scale. We present a model that supports judicious use of the product on the population level which balances the risk of complications against that of recurrent pelvic organ prolapse.