Prediction of Postoperative Urinary Tract Infection Following Benign Gynecologic Surgery.

INTRODUCTION AND HYPOTHESIS: The objective was to develop a prediction model for urinary tract infection (UTI) after pelvic surgery. METHODS: We utilized data from three tertiary care centers of women undergoing pelvic surgery. The primary outcome was a UTI within 8 weeks of surgery. Additional variables collected included procedural data, severity of prolapse, use of mesh, anti-incontinence surgery, EBL, diabetes, steroid use, estrogen use, postoperative catheter use, PVR, history of recurrent UTI, operative time, comorbidities, and postoperative morbidity including venous thromboembolism, surgical site infection. Two datasets were used for internal validation, whereas a third dataset was used for external validation. Algorithms that tested included the following: multivariable logistic regression, decision trees (DTs), naive Bayes (NB), random forest (RF), gradient boosting (GB), and multilayer perceptron (MP). RESULTS: For the training dataset, containing both University of British Columbia and Mayo Clinic Rochester data, there were 1,657 patients, with 172 (10.4%) UTIs; whereas for the University of Calgary external validation data, there were a total of 392 patients with a UTI rate of 16.1% (n = 63). All models performed well; however, the GB, DT, and RF models all had an area under the curve (AUC) > 0.97. With external validation the model retained high discriminatory ability, DT: AUC = 0.88, RF: AUC = 0.88, and GB: AUC = 0.90. CONCLUSIONS: A model with high discriminatory ability can predict UTI within 8 weeks of pelvic surgery. Future studies should focus on prospective validation and application of randomized trial models to test the utility of this model in the prevention of postoperative UTI.

Comparison of Morbidity and Retreatment After Urethral Bulking or Midurethral Sling at the Time of Pelvic Organ Prolapse Repair.

OBJECTIVE: To compare postprocedure retreatment rates for stress incontinence in patients who underwent either midurethral sling or urethral bulking at the time of concomitant repair of pelvic organ prolapse (POP). METHODS: This was a retrospective cohort study using data from the Premier Healthcare Database. Using Current Procedural Terminology codes, we identified patients who were undergoing POP repair and concomitant urethral bulking or midurethral sling between the years 2001 and 2018. Patients who underwent concomitant nongynecologic surgery, Burch urethropexy, or oncologic surgery, and those who did not undergo concomitant POP and anti-incontinence surgery, were excluded. Additional data collected included patient demographics, hospital characteristics, surgeon volume, and comorbidities. The primary outcome was a repeat anti-incontinence procedure at 2 years, and the secondary outcome was the composite complication rate. RESULTS: Over the study period, 540 (0.59%) patients underwent urethral bulking, and 91,005 (99.41%) patients underwent midurethral sling. The rate of a second procedure within 2 years was higher for urethral bulking, compared with midurethral sling (9.07% vs 1.11%, P <.001); in the urethral bulking group, 4.81% underwent repeat urethral bulking and 4.81% underwent midurethral sling. In the midurethral sling group, 0.77% underwent repeat midurethral sling and 0.36% underwent urethral bulking. After adjusting for confounders, midurethral sling was associated with a decreased odds of a repeat anti-incontinence procedure at 2 years (adjusted odds ratio 0.11, 95% CI 0.08-0.16). The probability of any complication at 2 years was higher with urethral bulking (23.0% vs 15.0%, P <.001). CONCLUSION: Urethral bulking at the time of POP repair is associated with a higher rate of repeat procedure and postoperative morbidity up to 2 years after surgery.

Development of a machine learning-based predictive model for prediction of success or failure of medical management for benign prostatic hyperplasia.

OBJECTIVE: To develop a novel predictive model for identifying patients who will and will not respond to the medical management of benign prostatic hyperplasia (BPH). METHODS: Using data from the Medical Therapy of Prostatic Symptoms (MTOPS) study, several models were constructed using an initial data set of 2172 patients with BPH who were treated with doxazosin (Group 1), finasteride (Group 2), and combination therapy (Group 3). K-fold stratified cross-validation was performed on each group, Within each group, feature selection and dimensionality reduction using nonnegative matrix factorization (NMF) were performed based on the training data, before several machine learning algorithms were tested; the most accurate models, boosted support vector machines (SVMs), being selected for further refinement. The area under the receiver operating curve (AUC) was calculated and used to determine the optimal operating points. Patients were classified as treatment failures or responders, based on whether they fell below or above the AUC threshold for each group and for the whole data set. RESULTS: For the entire cohort, the AUC for the boosted SVM model was 0.698. For patients in Group 1, the AUC was 0.729, for Group 2, the AUC was 0.719, and for Group 3, the AUC was 0.698. CONCLUSION: Using MTOPS data, we were able to develop a prediction model with an acceptable rate of discrimination of medical management success for BPH.

Opioid use following pelvic reconstructive surgery: a predictive calculator.

INTRODUCTION AND HYPOTHESIS: Our objective was to evaluate the amount of opioids used by patients undergoing surgery for pelvic floor disorders and identify risk factors for opioid consumption greater than the median. METHODS: This was a prospective cohort study of 18- to 89-year-old women undergoing major urogynecological surgery between 1 November2020 and 15 October 2021. Subjects completed one preoperative questionnaire ("questionnaire 1") that surveyed factors expected to influence postoperative pain and opioid use. At approximately 1 and 2 weeks following surgery, patients completed two additional questionnaires ("questionnaire 2" and "questionnaire 3") about their pain scores and opioid use. Risk factors for opioid use greater than the median were assessed. Finally, a calculator was created to predict the amount of opioid used at 1 week following surgery. RESULTS: One hundred and ninety patients were included. The median amount of milligram morphine equivalents prescribed was 100 (IQR 100-120), whereas the median amount used by questionnaire 2 was 15 (IQR 0-50) and by questionnaire 3 was 20 (IQR 0-75). On multivariate logistic regression, longer operative time (aOR 1.64 per hour of operative time, 95% CI 1.07-2.58) was associated with using greater than the median opioid consumption at the time of questionnaire 2; whereas for questionnaire 3, a diagnosis of fibromyalgia (aOR=16.9, 95% CI 2.24-362.9) was associated. A preliminary calculator was created using the information collected through questionnaires and chart review. CONCLUSIONS: Patients undergoing surgery for pelvic floor disorders use far fewer opioids than they are prescribed.

Comparison of Morphological and Histological Characteristics of Human and Sheep: Sheep as a Potential Model for Testing Midurethral Slings in vivo.

INTRODUCTION: The sheep was evaluated as a potential model for preclinical evaluation of urethral slings in vivo based on: (1) anatomical measurements of the sheep vagina and (2) histological tissue integration and host response to polypropylene (PP) slings. METHODS: Eight female, multiparous sheep were utilized. Three of 8 animals underwent surgery mimicking human tension-free vaginal tape protocols for midurethral slings and were euthanized at 6 months. The following measurements were obtained: vaginal length, maximum vaginal width with retraction, symphysis pubis length, and distance from the pubic bone to incision. Explanted sling samples from sheep and human were stained with hematoxylin and eosin for host reaction assessment. RESULTS: Geometric measurements were similar between humans and sheep. Sheep vaginal anatomy allowed sling placement similar to procedures in human surgeries, and all sheep recovered without problems. Comparative histology between the sheep and human indicated similar host reaction and collagen deposition around implants, confirming suitability of the sheep model for biomaterial response assessment. CONCLUSION: Sheep vaginal length is comparable to humans. Tissue integration and host response to PP slings showed chronic inflammation with rich collagen deposition around the material in both sheep and human specimens, highlighting the sheep as a potential animal model for preclinical testing of midurethral slings.

Effects of different diets used to induce obesity/metabolic syndrome on bladder function in rats.

Preclinical and human studies on the relationship between obesity/metabolic syndrome (MetS) and lower urinary tract dysfunction (LUTD) are inconsistent. We compared the temporal effects of feeding four different diets used to induce obesity/MetS, including 60% fructose, 2% cholesterol +10% lard, 30% fructose + 20% lard, or 32.5% lard diet, up to 42 wk, on metabolic parameters and bladder function in male Sprague-Dawley rats. Rats fed a 30% fructose + 20% lard or 32.5% lard diet consumed less food (grams), but only the 32.5% lard diet group took in more calories. Feeding rats a 60% fructose or 30% fructose + 20% lard diet led to glucose intolerance and increased blood pressure. Higher body weight and increased cholesterol levels were observed in the rats maintained on a 2% cholesterol +10% lard diet, whereas exposure to a 32.5% lard diet affected most of the above parameters. Voiding behavior measurement showed that voiding frequency and the total voided volume were lower in the experimental diet groups except for the 30% fructose + 20% lard group. The mean voided volume was lower in the 30% fructose + 20% lard and 32.5% lard groups compared with the control group. Cystometric analysis revealed a decreased bladder capacity, mean voided volume, intermicturition interval, and compliance in the 32.5% lard diet group. In conclusion, experimental diets including 60% fructose, 30% fructose + 20% lard, or 2% cholesterol + 10% lard diet differently affected physiological and metabolic parameters and bladder function to a limited extent, while exposure to a 32.5% lard diet had a greater impact.

A study on etiology of incontinence in double knockout mouse model.

INTRODUCTION AND OBJECTIVE: Stress urinary incontinence is of concern in both pediatric and adult population. Double mutant GLI family zinc finger Gli2+/-; Gli3Δ699/+ murine model of stress incontinence has been recently developed as a reliable model which does not require surgical manipulation to create incontinence and is shown to survive to adulthood. The aim of this study was to establish the etiology of incontinence in the double mutant Gli2+/-; Gli3Δ699/+ mice. STUDY DESIGN: We used 13 cluster of differentiation 1 (CD-1) mice (7-9 weeks) for demonstration of histology of the bladder and urethra. There were 3 Wild Gli2+/- females, 2 Wild Gli2+/- males, 4 Gli2+/-;Gli3Δ699/+ females and 4 Gli2+/-;Gli3Δ699/+ males. The Wild Gli2+/- mice served as the control group and Gli2+/-;Gli3Δ699/+ mice served as the test group. Additionally, eight 16.5 days mice (2 each of Wild Gli2+/- females, Wild Gli2+/- males, double knockout (DKO) Gli2+/-;Gli3Δ699/+ females and Gli2+/-;Gli3Δ699/+ males) were used to assess the histology of the spinal cord. The gross appearance of bladder and urethra was studied using ink injection assays. Immunohistochemistry was done for smooth muscle actin and cytokeratin. RESULTS: Gross and histologic appearance confirmed the previously reported widening of bladder outlet and hypoplasia of smooth muscles in female urethra and also established them in the male urethra of Gli2+/-;Gli3Δ699/+ mice compared to Gli2+/- mice. The double knockout mice were smaller than the Gli2 mice (5.2 vs 6.1 cm, p = 0.002). Immunohistochemistry demonstrated epithelial hyperplasia and smooth muscle hypoplasia. Additionally, there was prostatic hypoplasia in the Gli2+/-;Gli3Δ699/+ male mice. The spinal cord length for body size appeared comparable between the Gli2+/- and Gli2+/-;Gli3Δ699/+ mice but histological evaluation revealed abnormal development of the caudal end of the vertebral body with premature termination of the spinal cord (Figure). DISCUSSION: The histological changes in the bladder neck and urethra were consistent to those previously reported. While previous report described the findings in female mice only, we confirmed that these findings are also present in males as well as prostatic hypoplasia, a possible additional factor leading to stress incontinence. The most important finding in the present study however, was the detection of premature termination of spinal cord in the DKO Gli2+/-; Gli3Δ699/+ mice which has not been reported previously and is likely a major contributor to incontinence in this model. CONCLUSION: The incontinence in male as well as female Gli2+/-; Gli3Δ699/+ mice is due to both myogenic and neurogenic involvement. These double knockout mice are a valuable model of stress incontinence related to neurogenic bladder due to low outlet resistance.

In Vivo Delivery of M0, M1, and M2 Macrophage Subtypes via Genipin-Cross-Linked Collagen Biotextile.

Developing strategies to regulate the immune response poses significant challenges with respect to the clinical translation of tissue-engineered scaffolds. Prominent advancements have been made relating to macrophage-based therapies and biomaterials. Macrophages exhibit the potential to influence healing trajectory, and predominance of particular subtypes during early onset of healing influences repair outcomes. This study evaluated short- and long-term healing response and postoperative mechanical properties of genipin-cross-linked, electrochemically aligned collagen biotextiles with comparative administration of M0, M1, and M2 subtypes. Irrespective of macrophage subtype seeded, all the groups demonstrated existence of M2 macrophages at both time points as typified by arginase and Ym-1 expressions, and distinct absence of M1 macrophages, as indicated by lack of inducible nitric oxide synthase (iNOS) and interleukin-1ß expression in all the groups for both time points. M2 macrophage-seeded collagen biotextiles revealed promising host tissue responses, such as reduced fibrous capsule thickness and minimal granulation tissue formation. Furthermore, the M2-seeded group displayed more abundant interstitial collagen deposition following degradation of the collagen threads. M2 macrophage supplementation improved structural and mechanical properties at the tissue and cellular level as indicated by increased modulus and stiffness. This study demonstrates improved biomechanical and histological outcomes following incorporation of M2 macrophages into genipin-cross-linked collagen biotextiles for tissue repair and offers future strategies focused on connective tissue regeneration. Impact statement Macrophages exhibit significant plasticity with complex phenotypes ranging from proinflammatory (M1) to proregenerative (M2). They release cytokines and chemokines governing immunological stability, inflammation resolution, and tissue healing and regeneration. However, utilization of macrophages as therapeutic tools for tissue engineering remains limited. In this study, genipin-cross-linked collagen biotextiles were employed to deliver M0, M1, and M2 macrophages and evaluate tissue responses and postsurgical mechanical properties in vivo. M2-seeded collagen biotextiles showed reduced fibrous capsule and favorable healing response. These outcomes shed new light on designing tissue-engineered constructs that offer a novel cell-based therapeutic approach for applications requiring structural augmentation.

Skene's Gland Malignancy: A Case Report and Systematic Review.

OBJECTIVE: To present a recent clinical case of Skene's gland carcinoma and review all published literature of Skene's gland malignancy with associated treatment and outcomes. METHODS: We review a new case of metastatic Skene's gland adenocarcinoma. We then performed a systematic search of PubMed and Ovid-Medline through December 2021 and retrieved English language articles for review. Peer-reviewed articles were deemed eligible if they included patients with Skene's gland malignancy. Reports were reviewed for pathologic accuracy, patient characteristics, clinical presentation, tumor pathology, treatment and outcome. RESULTS: We reviewed 211 articles and included 15 cases from 1974 to 2022. The median patient age was 71 years (range 46-88). The most common presentation was an asymptomatic periurethral or urethral lesion in five cases (33.3%), followed by hematuria or vaginal bleeding in three patients (20.0%). In eight cases, a prostate-specific antigen was measured and found to be elevated, range 0.8-60.8 ng/mL. Treatment approaches varied and included local excision in eight cases, radical surgical resection in two cases, radiation therapy in two cases, and adjunctive androgen deprivation therapy in one case. Pathology was consistent with adenocarcinoma resembling prostate in all cases. In all cases tested, prostate-specific antigen normalized after definitive therapy of any type. Median follow up was 11.5 months, and there were no cases of recurrence or mortality secondary to Skene's gland adenocarcinoma. CONCLUSION: There are 15 published cases of a Skene's gland malignancy, all adenocarcinoma resembling prostate. Local excision is most often utilized for treatment, with androgen deprivation therapy emerging as a new treatment consideration.

The Inflection Point Model: A Model to Explore the Hidden Burdens of Non-Cancerous Genitourinary Conditions.

OBJECTIVE: To propose a conceptual model to identify points along the condition course where actions or inaction affect downstream burdens of non-cancerous genitourinary conditions (NCGUC). MATERIALS AND METHODS: The National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK) convened an interdisciplinary meeting to comprehensively consider the burdens of NCGUCs. Subsequently, the authors met monthly to conceptualize the model. RESULTS: Inflection points (IP) describe time points during a condition course that are sensitive to change. Our proposed Inflection Point Model (IPM) helps conceptualize burden/benefit trade-offs in any related decision and provides a platform to identify the downstream aggregate burden of a NCGUC across multiple socio-ecological levels at a single time point, which may be summed across the condition course to measure cumulative burden. Two personae demonstrate the utility of this model to better understand impacts of 2 common NCGUCs. CONCLUSION: The IPM may be applied in multiple contexts: narrowly to explore burden of a single NCGUC at a single IP; or more broadly, to address multiple conditions, multiple IPs, or multiple domains/levels of social ecology. Applying the IPM may entail combining population data describing prevalence of NCGUCs, associated behaviors, and resulting outcome patterns that can be combined with suitable mathematical models to quantify aggregate and cumulative burden. The IPM challenges stakeholders to expand from the individual to include broader levels of social ecology. Application of the IPM will undoubtedly identify data gaps and research needs that must be fulfilled to delineate and address the burden of NCGUCs.

Pelvic Organ Prolapse Surgery in the Elderly and Frail: Safety of a Reconstructive Versus Obliterative Approach.

OBJECTIVES: The aim of this study was to compare the risk of complications associated with obliterative surgery versus reconstructive surgery in elderly and frail patients undergoing surgery for pelvic organ prolapse. METHODS: We performed a retrospective cohort study utilizing the American College of Surgeons National Surgical Quality Improvement Program Database from 2010 to 2017. We compared characteristics and perioperative complications in patients aged 80 years or older who underwent obliterative surgery versus reconstructive surgery. Multivariate logistic regression and propensity score matching were used to control for confounding. A subanalysis was performed that included patients who were considered frail as defined by the National Surgical Quality Improvement Program Modified Frailty Index 5. RESULTS: Of 1,654 total patients, reconstructive surgery was performed in 56.9% of patients, and obliterative surgery was performed in 43.1%. The respective composite complication rates were 9.2% and 9.8% (P = 0.69), whereas severe complications were experienced by 1.9% in the reconstructive group versus 0.8% in the obliterative group (P = 0.07). On multivariate logistic regression, reconstructive surgery was not significantly associated with the composite complication rate (adjusted odds ratio, 1.0; 95% confidence interval, 0.7-1.4; P = 0.80). After propensity score matching, composite complications did not differ between groups, but the rate of severe complications was significantly higher in patients who underwent reconstructive surgery compared with obliterative surgery (2.1% vs 0.8%; odds ratio, 2.53; 95% confidence interval, 1.01-6.36; P = 0.05). In frail patients only, complication rates did not differ between groups. CONCLUSIONS: In patients aged 80 years or older, the overall rate of complications did not differ between those who underwent reconstructive surgery versus obliterative surgery. However, propensity score matching identified an increased risk of the most severe complications in patients who underwent reconstructive surgery.

Physical multimorbidity and incident urinary incontinence among community-dwelling adults aged ≥50 years: findings from a prospective analysis of the Irish Longitudinal Study on Ageing.

BACKGROUND: There are no prospective studies on the association between multimorbidity and urinary incontinence (UI), while mediators in this association are unknown. Thus, we aimed to (i) investigate the longitudinal association between multimorbidity and UI in a large sample of Irish adults aged ≥50 years and (ii) investigate to what extent physical activity, polypharmacy, cognitive function, sleep problems, handgrip strength and disability mediate the association. METHODS: Data on 5,946 adults aged ≥50 years old from the Irish Longitudinal Study on Aging were analysed. The baseline survey was conducted between 2009 and 2011 and follow-up after 2 years was conducted. Information on self-reported occurrence of UI in the past 12 months and lifetime diagnosis of 14 chronic conditions were obtained. Multivariable logistic regression and mediation analysis were conducted. RESULTS: After adjustment for potential confounders, compared to having no chronic conditions at baseline, having three (odds ratio [OR] = 1.79; 95% confidence interval [CI] = 1.30-2.48) and four or more (OR = 1.86; 95% CI = 1.32-2.60), chronic conditions were significantly associated with incident UI. Mediation analysis showed that polypharmacy, sleep problems and disability explained 22.7, 17.8 and 14.7% of the association between multimorbidity (i.e. two or more chronic conditions) and incident UI, respectively. CONCLUSION: A greater number of chronic conditions at baseline were associated with a higher risk for incident UI at 2-year follow-up among adults aged ≥50 years in Ireland. Considering the effects of different medications on UI and improving sleep quality and disability among people aged ≥50 years with multimorbidity may reduce the incidence of UI.

Genipin guides and sustains the polarization of macrophages to the pro-regenerative M2 subtype via activation of the pSTAT6-PPAR-gamma pathway.

M2 macrophages are associated with deposition of interstitial collagen and other extracellular matrix proteins during the course wound healing and also inflammatory response to biomaterials. Developing advanced biomaterials to promote the M2 subtype may be an effective way to improve tissue reinforcement surgery outcomes. In this study, the effect of genipin, a naturally derived crosslinking agent, on M0 â†’ M2-polarization was investigated. Genipin was introduced either indirectly by seeding cells on aligned collagen biotextiles that are crosslinked by the agent or in soluble form by direct addition to the culture medium. Cellular elongation effects on macrophage polarization induced by the collagen biotextile were also investigated as a potential inducer of macrophage polarization. M0 and M2 macrophages demonstrated significant elongation on the surface of aligned collagen threads, while cells of the M1 subtype-maintained a round phenotype. M0 â†’ M2 polarization, as reflected by arginase and Ym-1 production, was observed on collagen threads only when the threads were crosslinked by genipin, implicating genipin as a more potent inducer of the regenerative phenotype compared to cytoskeletal elongation. The addition of genipin to the culture medium directly also drove the emergence of pro-regenerative phenotype as measured by the markers (arginase and Ym-1) and through the activation of the pSTAT6-PPAR-gamma pathway. This study indicates that genipin-crosslinked collagen biotextiles can be used as a delivery platform to promote regenerative response after biomaterial implantation. STATEMENT OF SIGNIFICANCE: The immune response is one of the key determinants of tissue repair and regeneration rate, and outcome. The M2 macrophage subtype is known to resolve the inflammatory response and support tissue repair by producing pro-regenerative factors. Therefore, a biomaterial that promotes M2 sub-type can be a viable strategy to enhance tissue regeneration. In this study, we investigated genipin-crosslinked electrochemically aligned collagen biotextiles for their capacity to induce pro-regenerative polarization of M0 macrophages. The results demonstrated that genipin, rather than matrix-induced cellular elongation, was responsible for M0 â†’ M2 polarization in the absence of other bioinductive factors and maintaining the M2 polarized status of macrophages. Furthermore, we identified that genipin polarizes the M2 macrophage phenotype via activation of the pSTAT6-PPAR-gamma pathway.

Abdominal and vaginal pelvic support with concomitant hysterectomy for uterovaginal pelvic prolapse: a comparative systematic review and meta-analysis.

INTRODUCTION AND HYPOTHESIS: While approximately 225,000 pelvic organ prolapse (POP) surgeries are performed annually in the US, there is no consensus on the optimal route for pelvic support for the initial treatment of uterovaginal prolapse (UVP). Our objective is to compare the outcomes of abdominal sacrocolpopexy (ASC) to vaginal pelvic support (VPS) with either uterosacral ligament suspension (USLS) or sacrospinous ligament fixation (SSF) in combination with hysterectomy for treating apical prolapse. METHODS: A systematic search was performed through March 2021. Studies comparing ASC with VPS for treatment of UVP were included in the review. The primary outcome was the rate of overall anatomic prolapse failure per studies' definition. Secondary outcomes included evaluating isolated recurrent vaginal wall prolapse, postoperative POP-Q points, total vaginal length (TVL), and Pelvic Floor Distress Inventory (PFDI-20) scores. Random effect analyses were generated utilizing R 4.0.2. RESULTS: Out of 4225 total studies, 4 met our inclusion criteria, including 226 patients in the ASC group and 199 patients in the VPS group. ASC was not found to be associated with a higher rate of vaginal wall prolapse recurrence (OR = 0.6; 95% CI = 0.2-2.4; P = 0.33). There was no significant difference between groups for anterior or apical vaginal wall prolapse recurrence (P = 0.58 and P = 0.97, respectively). ASC was associated with significantly longer TVL (mean difference [MD]: 1.01; 95% CI = 0.33-1.70; P = 0.02) and better POP-Q Ba scores [MD = -0.23; 95% CI = -0.37; -0.10; P = 0.01]. CONCLUSIONS: ASC and vaginal pelvic support (either USLS or SSF) have comparable anatomical outcomes. However, weak evidence of a difference in TVL and Ba was found. The strength of the evidence in this study is based on the small number of observational studies. A large, randomized trial is highly warranted.

Adoption, Safety, and Retreatment Rates of Prostatic Urethral Lift for Benign Prostatic Enlargement.

PURPOSE: Novel minimally invasive therapies like the prostatic urethral lift are among the many endoscopic options for the treatment of benign prostatic enlargement and lower urinary tract symptoms (BPE/LUTS). To further understand the relative uptake, complications and retreatment rates of contemporary endoscopic procedures for BPE/LUTS across diverse practice types, we performed a retrospective study of inpatient and ambulatory surgery encounters in the Premier Healthcare database. MATERIALS AND METHODS: We included men who underwent endoscopic procedures for BPE/LUTS between 2000 and 2018. We determined the utilization of endoscopic therapies for BPE/LUTS, 30-day and 90-day readmission rates, and retreatment rate. Multivariable logistic regression was used to assess the association of procedure type with outcomes for the 3 most commonly performed procedures. RESULTS: We identified 175,150 men treated with endoscopic surgery for BPE/LUTS. The annual percent utilization of the prostatic urethral lift increased from <1% in 2014 to 10.4% in 2018. Compared to transurethral resection of the prostate and prostate photovaporization, prostatic urethral lift was associated with a lower odds of readmission at 30 (OR 0.58, p <0.01) and 90 (OR 0.55, p <0.01) days and a higher odds of retreatment within 2 years of followup (OR 1.78, p <0.01). CONCLUSIONS: Providers have rapidly adopted prostatic urethral lift which accounted for more than 1 in 10 endoscopic procedures captured for BPE/LUTS in 2018. Men treated with prostatic urethral lift are readmitted less within 30 and 90 days but are more likely to be retreated within 2 years of their index procedure as compared to men treated with transurethral resection of the prostate or prostate photovaporization.

Tamsulosin vs placebo to prevent postoperative urinary retention following female pelvic reconstructive surgery: a multicenter randomized controlled trial.

BACKGROUND: Postoperative urinary retention is common after female pelvic reconstructive surgery. Alpha receptor antagonists can improve dysfunctional voiding by relaxing the bladder outlet and may be effective in reducing the risk of postoperative urinary retention. OBJECTIVE: This study aimed to determine whether tamsulosin is effective in preventing postoperative urinary retention in women undergoing surgery for pelvic organ prolapse. STUDY DESIGN: This was a multicenter, double-blind, randomized controlled trial between August 2018 and June 2020, including women undergoing surgery for pelvic organ prolapse. Patients were excluded from recruitment if they had elevated preoperative postvoid residual volume, history of postoperative urinary retention, or a contraindication to tamsulosin. Those who experienced cystotomy were excluded from analysis. Participants were randomized to a 10-day perioperative course of tamsulosin 0.4 mg vs placebo, beginning 3 days before surgery. A standardized voiding trial was performed on postoperative day 1. The primary outcome was the development of postoperative urinary retention, as defined by the failure of the voiding trial or subsequent need for catheterization to empty the bladder. Secondary outcomes included the rate of urinary tract infection and the impact on lower urinary tract symptoms as measured by the American Urological Association Symptom Index. RESULTS: Of 119 patients, 57 received tamsulosin and 62 received placebo. Groups were similar in regard to demographics, preoperative prolapse and voiding characteristics, and surgical details. Tamsulosin was associated with a lower rate of postoperative urinary retention than placebo (5 patients [8.8%] vs 16 patients [25.8%]; odds ratio, 0.28; 95% confidence interval, 0.09-81; P=.02). The number needed to treat to prevent 1 case of postoperative urinary retention was 5.9 patients. The rate of urinary tract infection did not differ between groups. American Urological Association Symptom Index scores significantly improved after surgery in both groups (median total score, 14 vs 7; P<.01). Scores related to urinary stream improved more in the tamsulosin group than in placebo (P=.03). CONCLUSION: In this placebo-controlled trial, tamsulosin use was associated with a reduced risk of postoperative urinary retention in women undergoing surgery for pelvic organ prolapse.

Does prior surgical interventional therapy for BPH affect the oncological or functional outcomes after primary whole-gland prostate cryoablation for localized prostate cancer?

BACKGROUND: To assess whether prior interventional treatment for benign prostatic hyperplasia (BPH) influences oncologic or functional outcomes following primary whole-gland prostate cryoablation. METHODS: Among 3831 men with prostate cancer who underwent primary whole-gland prostate cryoablation, we identified 160 with a history of prior BPH interventional therapy including transurethral needle ablation (n = 6), transurethral microwave thermotherapy (n = 9), or transurethral resection of the prostate (n = 145). Patients with a history of medically treated or unspecified BPH therapy were excluded from the study. Oncological and functional outcomes were compared between men with and without prior BPH interventional therapy. RESULTS: In unadjusted analyses, prior interventional BPH therapy was associated with higher risks of postoperative urinary retention (17.5% vs. 9.6%, p = 0.001) and new-onset urinary incontinence (39.9% vs. 19.4%, p > 0.001) compared with no prior therapy. Interventional BPH therapy was not correlated with the risk of developing a rectourethral fistula (p = 0.84) or new-onset erectile dysfunction (ED) at 12 months (p = 0.08) following surgery. On multivariable regression, prior interventional BPH therapy was associated with increased risk of urinary retention (OR 1.9, 95%, p = 0.015) and new-onset urinary incontinence (OR 2.13, p < 0.001). The estimated 5 years Kaplan-Meier survival analysis showed no statistically significant difference (p = 0.3) in biochemical progression free survival between those who underwent interventional BPH therapy compared with those who did not. Local disease recurrence assessed by post cryoablation positive for-cause prostate biopsy showed no significant difference between the two groups (25.4% vs. 28.7%, p = 0.59). CONCLUSIONS: Prior interventional BPH therapy did not affect the oncologic outcomes nor did it increase the risk of rectourethral fistula or ED in sexually performing patients prior to cryosurgery. Prior interventional BPH therapy was associated with increased risk of urinary retention and incontinence after primary whole-gland prostate cryoablation for prostate cancer.

Medical Malpractice Litigation in Non-Mesh-Related Pelvic Organ Prolapse Surgery: An Analysis of 91 Cases.

INTRODUCTION: Malpractice litigations have significant implications for patients and physicians. Studies have investigated mesh litigations in female pelvic reconstructive surgery, but none on nonmesh pelvic organ prolapse (POP) surgery. Our purpose is to determine the reasons for and outcomes of medical malpractice after nonmesh POP surgery. METHODS: Westlaw (Thompson Reuters, New York, New York) is a legal research database of US court records. We identified completed POP litigations from 1987 to 2018 using the following: "pelvic organ prolapse," "enterocele," "rectocele," "cystocele," "uterine prolapse," and "vaginal wall prolapse." Mesh-related cases were excluded. Outcomes included reasons for litigation, verdict, injury, and payments. Statistical analysis was performed with nonparametric tests and χ2 independence test. RESULTS: Ninety-one litigations were included. The median plaintiff age was 53 years (range, 36-85 years). The leading allegation was negligence of surgery (n = 59; 65%). The jury sided with the defendant physician in 67% of cases (n = 61). There was no association between case verdict and patient age (P = 0.781), geographic region (P = 0.824), or allegation (P = 0.904). The primary complications were urinary tract injury (n = 24; 26%), need for additional surgery (n = 22; 24%), and new postoperative urinary symptoms (n = 22; 24%). The median payout was $280,000 (interquartile range, $137,250-$1,300,000), with no difference between plaintiff awards or settlements (P = 0.659). CONCLUSION: The leading allegation of malpractice litigations for nonmesh POP surgery is negligence of surgery, whereas the most common complication was urinary tract injury. A verdict in favor of the physician defendant was the most likely outcome. Plaintiff awards and settlements were not statistically different with no variation by region or time.

Baseline Brain Segmental Volumes in Responders and Nonresponders to Anticholinergic Therapy for Overactive Bladder Syndrome.

OBJECTIVE: Evaluate structural differences in brains of responders (R) and nonresponders (NR) to anticholinergic (AC) therapy for overactive bladder (OAB). MATERIALS AND METHODS: This was a retrospective cohort study of age matched women treated with an AC medication for OAB and underwent magnetic resonance imaging within 12 months before treatment. Data on pretreatment demographic and clinical variables and symptom severity was also collected.T1-weighted magnetic resonance images of the brain for each subject were segmented using FreeSurfer software. Structures included for analysis were cerebral cortex, white matter, subcortical gray matter, cerebellum, and brain stem.Nonresponders were defined as patients who reported less than 50% improvement after a minimum of 4 weeks on the maximum dose of the prescribed medication. Pairwise analysis between groups was performed using the Wilcoxon-Rank Sum test and Fisher exact test where appropriate. Spearman ρ was used to evaluate for correlations between neurologic structures and symptom severity. RESULTS: There were no differences in pretreatment characteristics or symptom severity between the 21 R and 18 NR. Nonresponders had lower volumes of the right caudal anterior cingulate gyrus white matter (1919 mm3 vs 2416 mm3, P = 0.008) and right parahippocampal gyrus white matter (1008 mm3 vs 1469 mm3, P = 0.001). Incontinence episode frequency showed a negative moderate correlation with the anterior cingulate gyrus white matter volume (ρ = -0.4228, P = 0.007). The right and left cerebellar cortices showed weak and moderate negative correlations to frequency of nocturia (ρ = -0.384, P = 0.02 and ρ -0.443, P = 0.005, respectively). CONCLUSION: There are measurable volumetric differences in brain structures in R and NR to AC therapy.