Urinary Symptoms and Urodynamic Findings in Women with Pelvic Organ Prolapse: Is There a Correlation? Results of an Artificial Neural Network Analysis

European Urogynaecological Association Position Statement: The role of urodynamics in stress urinary incontinence evaluation and treatment decision

Stress urinary incontinence (SUI) is defined as a condition characterized by the involuntary leakage of urine during activities that increase intra-abdominal pressure which may decrease quality of life with a significant economic impact on health systems, necessitating the implementation of cost-effective management plans. Urodynamics (UDS) has been considered during the last decades as the gold standard for assessment of lower urinary tract symptoms (LUTS) due to their high reproducibility. At the same time, concerns about the systematic use of UDS before SUI surgery were raised due to a limited evidenced base to recommend their routine use. In uncomplicated female patients with SUI, UDS can offer further insights into LUTS, potentially assisting the physician in determining the appropriate therapeutic approach. However, it has not been shown that preoperative UDS can directly impact the surgical outcome for continence. Indeed, evidence supports the conclusion that pre-operative UDS in women with uncomplicated, clinically demonstrable, SUI does not improve the outcome of surgery for SUI. Nevertheless, asymptomatic detrusor overactivity (DO) identified by urodynamic testing or pre-existing voiding dysfunction are associated with an increased occurrence of postoperative overactive bladder (OAB) and voiding dysfunction, respectively. The EUGA Working Group concluded that the evidence does not support the systematic preoperative use of UDS for uncomplicated cases. However, in cases where mixed symptoms, voiding dysfunction, previous surgery, or concomitant prolapse are present, preoperative UDS are advised as they can be beneficial in anticipating postoperative outcomes. This aids in conducting comprehensive and thorough preoperative counseling. The Group recommend performing preoperative UDS considering the patient's specific clinical situation and the surgeon's judgment, with consideration given to the potential benefits, risks, and impact on treatment decisions and patient outcomes.

Is the time right for a new initiative in mathematical modeling of the lower urinary tract? ICI-RS 2023

INTRODUCTION

A session at the 2023 International Consultation on Incontinence - Research Society (ICI-RS) held in Bristol, UK, focused on the question: Is the time right for a new initiative in mathematical modeling of the lower urinary tract (LUT)? The LUT is a complex system, comprising various synergetic components (i.e., bladder, urethra, neural control), each with its own dynamic functioning and high interindividual variability. This has led to a variety of different types of models for different purposes, each with advantages and disadvantages.

METHODS

When addressing the LUT, the modeling approach should be selected and sized according to the specific purpose, the targeted level of detail, and the available computational resources. Four areas were selected as examples to discuss: utility of nomograms in clinical use, value of fluid mechanical modeling, applications of models to simplify urodynamics, and utility of statistical models.

RESULTS

A brief literature review is provided along with discussion of the merits of different types of models for different applications. Remaining research questions are provided.

CONCLUSIONS

Inadequacies in current (outdated) models of the LUT as well as recent advances in computing power (e.g., quantum computing) and methods (e.g., artificial intelligence/machine learning), would dictate that the answer is an emphatic "Yes, the time is right for a new initiative in mathematical modeling of the LUT."

International Urogynecology consultation chapter 2 committee 3: the clinical evaluation of pelvic organ prolapse including investigations into associated morbidity/pelvic floor dysfunction

INTRODUCTION AND HYPOTHESIS

This manuscript from Chapter 2 of the International Urogynecology Consultation (IUC) on Pelvic Organ Prolapse (POP) reviews the literature involving the clinical evaluation of a patient with POP and associated bladder and bowel dysfunction.

METHODS

An international group of 11 clinicians performed a search of the literature using pre-specified search MESH terms in PubMed and Embase databases (January 2000 to August 2020). Publications were eliminated if not relevant to the clinical evaluation of patients or did not include clear definitions of POP. The titles and abstracts were reviewed using the Covidence database to determine whether they met the inclusion criteria. The manuscripts were reviewed for suitability using the Specialist Unit for Review Evidence checklists. The data from full-text manuscripts were extracted and then reviewed.

RESULTS

The search strategy found 11,242 abstracts, of which 220 articles were used to inform this narrative review. The main themes of this manuscript were the clinical examination, and the evaluation of comorbid conditions including the urinary tract (LUTS), gastrointestinal tract (GIT), pain, and sexual function. The physical examination of patients with pelvic organ prolapse (POP) should include a reproducible method of describing and quantifying the degree of POP and only the Pelvic Organ Quantification (POP-Q) system or the Simplified Pelvic Organ Prolapse Quantification (S-POP) system have enough reproducibility to be recommended. POP examination should be done with an empty bladder and patients can be supine but should be upright if the prolapse cannot be reproduced. No other parameters of the examination aid in describing and quantifying POP. Post-void residual urine volume >100 ml is commonly used to assess for voiding difficulty. Prolapse reduction can be used to predict the possibility of postoperative persistence of voiding difficulty. There is no benefit of urodynamic testing for assessment of detrusor overactivity as it does not change the management. In women with POP and stress urinary incontinence (SUI), the cough stress test should be performed with a bladder volume of at least 200 ml and with the prolapse reduced either with a speculum or by a pessary. The urodynamic assessment only changes management when SUI and voiding dysfunction co-exist. Demonstration of preoperative occult SUI has a positive predictive value for de novo SUI of 40% but most useful is its absence, which has a negative predictive value of 91%. The routine addition of radiographic or physiological testing of the GIT currently has no additional value for a physical examination. In subjects with GIT symptoms further radiological but not physiological testing appears to aid in diagnosing enteroceles, sigmoidoceles, and intussusception, but there are no data on how this affects outcomes. There were no articles in the search on the evaluation of the co-morbid conditions of pain or sexual dysfunction in women with POP.

CONCLUSIONS

The clinical pelvic examination remains the central tool for evaluation of POP and a system such as the POP-Q or S-POP should be used to describe and quantify. The value of investigation for urinary tract dysfunction was discussed and findings presented. The routine addition of GI radiographic or physiological testing is currently not recommended. There are no data on the role of the routine assessment of pain or sexual function, and this area needs more study. Imaging studies alone cannot replace clinical examination for the assessment of POP.

How should prospective research be designed to legitimately assess the value of urodynamic studies in female urinary incontinence?

AIMS

Since formal evidence demonstrating the value of urodynamic studies (UDS) in functional urology remains elusive, we aimed to consider how best to design robust research for this purpose in female urinary incontinence.

METHODS

An expert group was convened to debate the following considerations: (a) precedents for formally proving the value of a gold standard diagnostic test, (b) key research principles, (c) defining a study population, (d) selecting endpoints, (e) defining interventional and controls arms, (f) blinding, (g) powering the study, and (h) duration of follow-up. In each case, we considered the strengths and weaknesses of different approaches in terms of scientific validity, ethical acceptability, practicality, and likelihood of bias.

RESULTS

We agreed that unlike evaluating therapies, attempting to judge the value of a diagnostic test based on eventual treatment success is conceptually flawed. Nonetheless, we explored the design of a hypothetical randomized controlled trial for this purpose, agreeing that: (1) the study population must sufficiently reflect its real-world counterpart; (2) clinical endpoints should include not only continence status but also other lower urinary tract symptoms and risks of management; (3) participants in the interventional arm should receive individualized management based on their UDS findings; (4) the most scientifically valid approach to the control arm-empiric treatment-is ethically problematic; (5) sufficient statistical power is imperative; and (6) ≥ 2 years' follow-up is needed to assess the long-term impact of management.

CONCLUSIONS

Although a perfect protocol does not exist, we recommend careful consideration of our observations when reflecting on past studies or planning new prospective research.

Clinical and urodynamic findings before and after surgical repair of pelvic organ prolapse in women with lower urinary tract symptoms. A prospective observational study

OBJECTIVES

To investigate the association between urodynamic findings and lower urinary tract symptoms (LUTS) before and after surgical treatment of POP.

METHODS

Seventy-four patients with stage II or more anterior POP associated with LUTS and eligible for surgical repair of POP were included in this prospective study. All cases had clinical evaluation and urodynamic testing (UDS) before and 6 months after surgical repair of POP.

RESULTS

Mean age was 45±9 years. Mean BMI was 28±6 kg/m². Most cases were multiparous, had stage III cystocele (50/74, 68%), and an associating apical prolapse (37/74, 50%). Native tissue repair was done in 53/74 (72%) cases with a concomitant anti-incontinence procedure (AIP) in 41/74 (55%) for overt (26/74, 35%) or occult (15/74, 20%) stress urinary incontinence (SUI). Preoperative UDS revealed detrusor overactivity (DO) in 19/56 (34%) patients of those presenting with storage LUTS and an obstructed P_detQ_max in 20/26 (77%) patients presenting with voiding LUTS. At the 6-month postoperative follow-up, 61/74 (82%) patients had marked improvement of their LUTS, SUI resolved in 39/41 (95%) patients and 1/33 (3%) patient developed de novo SUI. Preoperative DO and post-void residual urine volume (PVR) were not related to the postoperative improvement, or persistence of LUTS. Meanwhile, detrusor underactivity (DU) was detected both on preoperative and postoperative UDS of 4 patients with persistent voiding LUTS.

CONCLUSIONS

Patients had significant improvement in LUTS after POP surgery with or without an AIP. DU was associated with persistence of voiding LUTS. Meanwhile, preoperative DO and PVR were of limited prognostic value.

Correlation between urinary symptoms and urodynamic findings: Is the bladder an unreliable witness?

OBJECTIVE

The role of urodynamics as the gold standard to investigate bladder function has recently been questioned. We aimed to evaluate the agreement of lower urinary tract symptoms and urodynamic diagnosis and to build predictive models.

STUDY DESIGN

Patients who underwent urodynamics for pelvic floor disorders between 2008 and 2016 were retrospectively analyzed. Clinical evaluation investigated the presence of genital prolapse, stress urinary incontinence (SUI), overactive bladder (OAB), urge urinary incontinence (UUI), voiding symptoms (VS), and bulging symptoms. The degree of concordance/agreement between symptoms and corresponding urodynamic findings was measured. Multivariate models to predict specific urodynamic findings were built.

RESULTS

1972 women were analyzed. The best agreement was found for SUI and urodynamic SUI, with a proportion of agreement of 0.68 and a Cohen's Kappa of 0.37. Very poor agreement was found for OAB/UUI and detrusor overactivity, voiding dysfunction, and positive post-void residuals. Multivariate models resulted in poor accuracy for all urodynamic findings (AUC range 0.64-0.72).

CONCLUSION

Lower urinary tract symptoms and gynecological examination are poor predictors of urodynamic findings. This confirms the role of urodynamic assessment in defining bladder function and providing precious information to counsel patients and establishing optimal clinical guidance.

The subjective and objective very long-term outcomes of TVT in the COVID era: A 20-year follow-up

Introduction and hypothesis

Few studies in literature have assessed the long-term durability and mesh-related complications of mid-urethral slings (MUSs). The aim of this study is to assess the efficacy and safety of retro-pubic tension-free vaginal tape (TVT) 20 years after implantation for the treatment of female stress urinary incontinence (SUI).

Methods

A prospective observational study was conducted in two urogynaecologic units in two countries. All the patients involved were consecutive women with urodynamically proven pure SUI treated by TVT. The patients underwent preoperative clinical and urodynamic evaluations. Subjective outcomes, objective outcomes and adverse events were recorded during the follow-up period.

Results

Fifty-two patients underwent a TVT surgical procedure. Twenty years after surgery, 32 out of 36 patients (88.8%) declared themselves cured (p = 0.98). Similarly, 33 out of these 36 patients (91.7%) were objectively cured (p = 0.98). No significant deterioration of subjective and objective cure rates was observed over time (p for trend 0.50 and 0.48). Fifteen of the 36 patients (41.6%) at the 20-year follow-up reported the onset of de novo overactive bladder (OAB) (p = 0.004). No significant vaginal bladder or urethral erosion or de novo dyspareunia was recorded and no patient required tape release or resection during this period. The cause of death of seven out of ten women who died in the last year of the follow-up period was coronavirus disease 19 (COVID 19).

Conclusions

The 20-year results of this study showed that TVT is a highly effective and safe option for the treatment of SUI. The impact of COVID 19 on the mortality rate of elderly women has drastically reduced the number of eligible patients for future evaluations in our region.

Single-incision mini-sling and trans-obturator sling for stress urinary incontinence: A 5-year comparison

OBJECTIVE

The aim of our study was to compare objective and subjective outcomes in women with stress urinary incontinence (SUI) submitted to either trans-obturator sling (TVT-ABBREVO®) or single incision mini-sling (SIMS-ALTIS®) at 5-year follow up.

STUDY DESIGN

A monocentric, retrospective study including women with isolated SUI and with concomitant proved urodynamic stress incontinence (USI), treated with an TVT-ABBREVO® or SIMS-ALTIS®. At 60-month follow up each woman was assessed subjectively, with two validated questionnaires (UDI-6 and ICQI-SF), and objectively with a cough stress test. Adverse events were collected.

RESULTS

Forty-two patients were evaluated in the ABBREVO® group and 58 in the ALTIS® group. No significant difference was found in subjective (88.1% vs 89.7%, p = 0.806) and objective (81.0% vs 86.2%, p = 0.479) cure rates between the two groups. Subjectively, improvement in urinary distress after surgery resulted statistically significant in both groups compared to baseline (p < 0.001). Long-term post-operative complications rate (i.e. de novo OAB and sling exposure) was similar in the two groups. They were, in fact, mainly classified as Dindo II grade and conservatively managed (i.e. antimuscarinics or β₃ agonists for de novo OAB).

CONCLUSION

This comparative study did not reveal significant difference between single-incision (ALTIS®) and trans-obturator (TVT-ABBREVO®) slings in terms of efficacy and morbidity at 5-year follow up.

International Urogynecology Consultation Chapter 1 Committee 5: relationship of pelvic organ prolapse to associated pelvic floor dysfunction symptoms: lower urinary tract, bowel, sexual dysfunction and abdominopelvic pain

INTRODUCTION AND HYPOTHESIS

This article from Chapter 1 of the International Urogynecology Consultation (IUC) on Pelvic Organ Prolapse (POP) establishes the prevalence of lower urinary tract disorders, bowel symptoms, vulvo-vaginal/lower abdominal/back pain and sexual dysfunction in women with POP.

METHODS

An international group of nine urogynecologists/urologists and one medical student performed a search of the literature using pre-specified search terms in Ovid, MEDLINE, Embase and CINAHL from January 2000 to March 2019. Publications were eliminated if not relevant or they did not include clear definitions of POP or the symptoms associated with POP. Definitions of POP needed to include both a physical examination finding using a validated examination technique and the complaint of a bothersome vaginal bulge. Symptoms were categorized into symptom groups for ease of evaluation. The Specialist Unit for Review Evidence (SURE) was used to evaluate for quality of the included articles. The resulting list of articles was used to determine the prevalence of various symptoms in women with POP. Cohort studies were used to evaluate for possible causation of POP as either causing or worsening the symptom category.

RESULTS

The original search yielded over 12,000 references, of which 50 were used. More than 50% of women with POP report lower urinary tract symptoms. Cohort studies suggest that women with POP have more obstructive lower urinary tract symptoms than women without POP. Pain described in various ways is frequently reported in women with POP, with low back pain being the most common pain symptom reported in 45% of women with POP. In cohort studies those with POP had more pain complaints than those without POP. Sexual dysfunction is reported by over half of women with POP and obstructed intercourse in 37-100% of women with POP. Approximately 40% of women have complaints of bowel symptoms. There was no difference in the median prevalence of bowel symptoms in those with and without POP in cohort studies.

CONCLUSIONS

The prevalence of lower urinary tract disorders, bowel symptoms, vulvo-vaginal/lower abdominal/back pain and sexual dysfunction in women with POP are common but inconsistently reported. There are few data on incidence of associated symptoms with POP, and cohort studies evaluating causality are rare or inconsistent. Obstructive voiding, lower abdominal and pelvic pain, and sexual dysfunction are most frequently associated with POP.

A systematic review of the applications of Expert Systems (ES) and machine learning (ML) in clinical urology

BACKGROUND

Testing a hypothesis for 'factors-outcome effect' is a common quest, but standard statistical regression analysis tools are rendered ineffective by data contaminated with too many noisy variables. Expert Systems (ES) can provide an alternative methodology in analysing data to identify variables with the highest correlation to the outcome. By applying their effective machine learning (ML) abilities, significant research time and costs can be saved. The study aims to systematically review the applications of ES in urological research and their methodological models for effective multi-variate analysis. Their domains, development and validity will be identified.

METHODS

The PRISMA methodology was applied to formulate an effective method for data gathering and analysis. This study search included seven most relevant information sources: WEB OF SCIENCE, EMBASE, BIOSIS CITATION INDEX, SCOPUS, PUBMED, Google Scholar and MEDLINE. Eligible articles were included if they applied one of the known ML models for a clear urological research question involving multivariate analysis. Only articles with pertinent research methods in ES models were included. The analysed data included the system model, applications, input/output variables, target user, validation, and outcomes. Both ML models and the variable analysis were comparatively reported for each system.

RESULTS

The search identified n = 1087 articles from all databases and n = 712 were eligible for examination against inclusion criteria. A total of 168 systems were finally included and systematically analysed demonstrating a recent increase in uptake of ES in academic urology in particular artificial neural networks with 31 systems. Most of the systems were applied in urological oncology (prostate cancer = 15, bladder cancer = 13) where diagnostic, prognostic and survival predictor markers were investigated. Due to the heterogeneity of models and their statistical tests, a meta-analysis was not feasible.

CONCLUSION

ES utility offers an effective ML potential and their applications in research have demonstrated a valid model for multi-variate analysis. The complexity of their development can challenge their uptake in urological clinics whilst the limitation of the statistical tools in this domain has created a gap for further research studies. Integration of computer scientists in academic units has promoted the use of ES in clinical urological research.

An Artificial Neural Networks Model for Early Predicting In-Hospital Mortality in Acute Pancreatitis in MIMIC-III

Background

Early and accurate evaluation of severity and prognosis in acute pancreatitis (AP), especially at the time of admission is very significant. This study was aimed to develop an artificial neural networks (ANN) model for early prediction of in-hospital mortality in AP.

Methods

Patients with AP were identified from the Medical Information Mart for Intensive Care-III (MIMIC-III) database. Clinical and laboratory data were utilized to perform a predictive model by back propagation ANN approach.

Results

A total of 337 patients with AP were analyzed in the study, and the in-hospital mortality rate was 11.2%. A total of 12 variables that differed between patients in survivor group and nonsurvivor group were applied to construct ANN model. Three independent variables were identified as risk factors associated with in-hospital mortality by multivariate logistic regression analysis. The predictive performance based on the area under the receiver operating characteristic curve (AUC) was 0.769 for ANN model, 0.607 for logistic regression, 0.652 for Ranson score, and 0.401 for SOFA score.

Conclusion

An ANN predictive model for in-hospital mortality in patients with AP in MIMIC-III database was first performed. The patients with high risk of fatal outcome can be screened out easily in the early stage of AP by our model.

Is urodynamic evaluation able to change and improve the management of women with idiopathic overactive bladder?

BACKGROUND

For women with overactive bladder (OAB), current guidelines recommend the use of urodynamic studies (UDS) only in complicated cases. This study aimed to investigate whether UDS can also be helpful in uncomplicated cases. Specific aims of the study were: 1) to evaluate objective benefit and subjective patient satisfaction with tailored treatment based on the UDS diagnosis compared to the outcomes of the pharmacological treatment only based on the symptoms; 2) to investigate the correlation between symptoms and UDS findings in women with uncomplicated idiopathic OAB symptoms; 3) to assess the ability of UDS to modify management decisions in these patients.

METHODS

Women presenting to our clinic with a history of uncomplicated OAB symptoms for the past three months or more, and who completed the International Consultation on Incontinence Questionnaire-Short Form (ICIQ-SF), were considered for this study. We proposed UDS to all participants. In women who accepted UDS (group 1), management decisions were made on the basis of urodynamic findings and post-treatment evaluation was scheduled at three months. The outcomes of treatments in these patients were compared to the results in women who did not accept UDS and who received pharmacological treatment symptoms-based (group 2). Objective outcomes were based on completion of a 3-day micturition diary. Subjective outcomes were captured using the Overactive Bladder Questionnaire Short Form (OABq-SF), the Patient Global Impression of Improvement (PGI-I) scale, and a patient satisfaction scale.

RESULTS

A total of 680 women were enrolled in the study; 478 underwent UDS and 202, at the contrary, declined UDS. In 53.6% of cases, UDS led to modification of the proposed management approach. At the 3-month follow-up, the overall patient satisfaction rate in group 1 and group 2 was 77% and 65.8%, respectively (P=0.003).

CONCLUSIONS

We showed that OAB management tailored according to the UDS diagnosis results in higher subjective satisfaction if compared with a pharmacological treatment symptoms-based. Our study confirmed a lack of correlation between OAB symptoms and the urodynamically proven diagnosis of detrusor overactivity (DO). It also suggested that UDS can determine the underlying pathophysiology of every woman with OAB syndrome, whether complicated or uncomplicated, allowing treatment to be appropriately tailored with better results.

TVT-O for treatment of pure urodynamic stress urinary incontinence: Efficacy and adverse effects at 13-years follow-up

AIM

To assess the efficacy and safety of tension-free vaginal tape-obturator (TVT-O) 13 years after implantation for the treatment of female pure stress urinary incontinence (SUI). This is the longest-term evaluation available of TVT-O outcomes.

METHODS

A multicenter, prospective study was conducted in five tertiary referral centers in three countries. All consecutive women with urodynamically proven pure SUI treated by TVT-O were included. Data regarding subjective outcomes (International Consultation on Incontinence Questionnaire-Short Form, Patient Global Impression of Improvement, and patient satisfaction scores), objective cure (stress test) rates, and adverse events were collected during follow-up. Univariable and multivariate analyses was performed to investigate outcomes.

RESULTS

One hundred sixty-eight women had TVT-O implantation. At 13 year after surgery, 150 of 157 patients (95%) declared themselves cured (P = .8). Similarly, at 10-year evaluation, 148 of 160 patients (92%) were objectively cured. No significant deterioration of objective cure rates was observed over time (P = .1). The multivariate analysis showed that previous anti-incontinence procedures and obesity independently predicted the subjective (odd ratio [OR]: 6.2 [95% confidence interval [CI], 1.8-13.6]; P = .02 and OR, 1.8 [95% CI, 1.3-3.0]; P = .03, respectively) and objective failure of TVT-O (OR, 5.8 [95% CI, 1.6-13.2]; P = .02 and OR, 1.6 [95% CI, 1.2-3.2]; P = .03, respectively). We found four cases of sling exposure; all of them occurred after the 10-year follow-up.

CONCLUSIONS

The 13-year results of this study showed that TVT-O is a highly effective and safe option for the treatment of SUI. We found that there is a significantly higher risk of having a sling exposure over 10 years after the procedure; however, the incidence is very low.

When should we use urodynamic testing? Recommendations of the Italian Society of Urodynamics (SIUD). Part 1 - Female population

Although, until a few years ago, the diagnostic power of urodynamic testing had never been questioned, recent studies in the literature have raised some doubts on the routine use of this tool. The benefits of the urodynamic studies (UDS) should be weighted against costs, time-consumption and patient discomfort. These recommendations are intended to guide clinicians in the right selection of the female patients to submit to a urodynamic evaluation. We reviewed the literature, regarding the use of UDS in female adults with lower urinary tract symptoms (LUTS) and pelvic floor dysfunction. Specifically, we analyzed and compared the guidelines and recommendations of the most important urology and uro-gynecology international scientific societies. These publications were used to create the evidence basis for characterizing the recommendations to perform urodynamic testing. A panel of 10 experts was composed and Delphi process was followed to obtain the panelist consensus. The final recommendations were approved by the unanimous consensus of the panel and compared with the best practice recommendations available in the literature. The recommendations are provided for diagnosis and management of common LUTS in female population. This review provides a summary of the most effective utilization of urodynamic studies for the global evaluation of patients with lower urinary tract symptoms and how to use them when really needed, avoiding unnecessary costs and patient inconveniences.

Artificial intelligence and neural networks in urology: current clinical applications

INTRODUCTION

As we enter the era of "big data," an increasing amount of complex health-care data will become available. These data are often redundant, "noisy," and characterized by wide variability. In order to offer a precise and transversal view of a clinical scenario the artificial intelligence (AI) with machine learning (ML) algorithms and Artificial neuron networks (ANNs) process were adopted, with a promising wide diffusion in the near future. The present work aims to provide a comprehensive and critical overview of the current and potential applications of AI and ANNs in urology.

EVIDENCE ACQUISITION

A non-systematic review of the literature was performed by screening Medline, PubMed, the Cochrane Database, and Embase to detect pertinent studies regarding the application of AI and ANN in Urology.

EVIDENCE SYNTHESIS

The main application of AI in urology is the field of genitourinary cancers. Focusing on prostate cancer, AI was applied for the prediction of prostate biopsy results. For bladder cancer, the prediction of recurrence-free probability and diagnostic evaluation were analysed with ML algorithms. For kidney and testis cancer, anecdotal experiences were reported for staging and prediction of diseases recurrence. More recently, AI has been applied in non-oncological diseases like stones and functional urology.

CONCLUSIONS

AI technologies are growing their role in health care; but, up to now, their "real-life" implementation remains limited. However, in the near future, the potential of AI-driven era could change the clinical practice in Urology, improving overall patient outcomes.

Mid-urethral sling in a day surgery setting: is it possible?

INTRODUCTION AND HYPOTHESIS

Several studies have shown that immediate catheter removal following pelvic surgery is associated with several advantages. The aim of this case-control study is to compare immediate versus delayed catheter removal following mid-urethral sling surgery, to determine if indwelling catheterisation is necessary after this procedure. The secondary outcomes were subjective and objective cure rate after at least a 1-year follow-up.

METHODS

Cases were defined as all the women who underwent a TVT Abbrevo for urodynamically proven stress incontinence. In every case the Foley catheter was removed by the surgeon at the end of the procedure. A voided volume >200 ml with a post-void residual of <100 ml, was considered a complete voiding trial. Patients who successfully completed the voiding trial and who did not develop any complications were discharged on the day of the surgery. We created a matched control cohort of women who underwent a TVT Abbrevo with delayed catheter removal (24 h after the procedure).

RESULTS

Eighty women with immediate catheter removal were included. Each case was individually matched with one control. No statistically significant differences in voiding dysfunctions, postoperative re-catheterisation, postoperative urinary tract infection, early and late onset of overactive bladder (OAB) and vaginal erosion were found between the study groups. No significant differences in either subjective or objective outcome were observed.

CONCLUSIONS

Immediate catheter removal allows the patient with urodynamically proven stress incontinence without OAB symptoms, prolapse and voiding dysfunctions, to be admitted, treated and discharged on the same day in an outpatient setting, with a high subjective and objective outcomes after at least a 1-year follow-up.

Diastasis recti abdominis after childbirth: Is it a predictor of stress urinary incontinence?

INTRODUCTION

Pregnancy and childbirth are considered risk factors for the development of diastasis recti abdominis (DRA). This anatomical change could be on the basis of stress urinary incontinence (SUI). Aim of this study was to assess the relationship between the value of DRA and SUI, in order to understand, if a specific abdominal rehabilitation might be indicated.

METHODS

All women with clinically and urodynamically proven SUI (group 1) 6 months after first childbirth, have been enrolled and compared with women without any symptoms of SUI (group 2). Exclusion criteria were age > 45 years, pelvic organ prolapse > II stage, previous abdominal surgery including cesarean section, BMI (Body Mass Index) > 30, previous weight loss > 10 kg, presence of abdominal hernia, and pathological connective tissue laxity. Physical examination and ultrasound measurement of DRA were performed. DRA in women with SUI were compared with DRA in continent women.

RESULTS

During the study period, 35 (48 %) incontinent women were included in group 1 and 38 (52 %) continent women were included in group 2. The two groups did not differ in any characteristics. No statistically significant differences in the mean value of DRA, 1.76 cm (±0.81 DS) in group 1 versus 1.69 (±0.79 DS) in group 2 (p value = 0.91), were found.

CONCLUSIONS

DRA is not a risk factor for SUI. Therefore, an intervention on the abdominal muscles during pelvic floor rehabilitation for SUI does not seem to be justified.

When should we use urodynamic testing? Recommendations of the Italian Society of Urodynamics (SIUD). Part 2 - Male and neurogical population

Recent studies in literature, have raised some doubts on the routine use of urodynamic testing. Many physicians and articles recommend a selective use of this tool, considering carefully risks and benefits. These recommendations are intended to guide clinicians in the right selection of the male and neurological patients to submit to a urodynamic evaluation. This is the second part of a previous article regarding the urodynamic recommendations in the female population. We reviewed the literature, regarding the use of UDS in male and neurological population with lower urinary tract symptoms (LUTS). Specifically, we analyzed and compared the guidelines and recommendations of the most important urology and urogynecology international scientific societies. These publications were used to create the evidence basis for characterizing the recommendations to perform urodynamic testing. A panel of 10 experts was composed and Delphi process was followed to obtain the panelist consensus. The final recommendations were approved by the unanimous consensus of the panel and compared with the best practice recommendations available in the literature. The recommendations are provided for diagnosis and management of common LUTS in male and neurological population. This review provides a summary of the most effective utilization of urodynamic studies for the global evaluation of patients with LUTS, and how to use them when really needed, avoiding unnecessary costs and patient inconveniences.

The role of urodynamics in the management of female stress urinary incontinence

AIM

The role of urodynamic study (UDS) in the management of female stress urinary incontinence (SUI) is one of the most controversial and debated topic in urogynecology. Here, we aimed to systematically assess the most relevant available evidence on urodynamics' value in the management of women with stress urinary incontinence.

METHODS

A systematic review according to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) Statement was performed in May 2018. Only randomized clinical trials, prospective studies, or retrospective studies articles evaluating the use of urodynamic studies in women with stress urinary incontinence were included.

RESULTS

After screening a total of 3055 records, 39 studies published from 1996 to 2018 were included.

CONCLUSIONS

In an uncomplicated population of women with SUI, it is not demonstrated that preoperative urodynamic evaluation can improve the outcome of continence surgery; however, UDS provides additional information regarding lower urinary tract function that could guide the physician to make the right therapeutic choice. UDS should be considered mandatory before surgery in complicated patients, but its use should also be evaluated in index patients when the results may help counseling and management of these women.

Management of Occult Urinary Incontinence with Prolapse Surgery

PURPOSE OF REVIEW

The purpose of this paper is to review (1) the epidemiology and pathophysiology of pelvic organ prolapse (POP) and occult stress urinary incontinence (SUI), (2) examine the data on combined operative management of POP and occult SUI, (3) discuss the approaches to clinical decision making, and (4) present future therapies.

RECENT FINDINGS

Prospective data on many approaches to concomitant treatment of prolapse and occult stress urinary incontinence, such as minimally invasive sacrocolpopexy and midurethral sling, or older approaches that have regained favor among patients and clinicians wishing to avoid synthetic mesh, such as native tissue prolapse repair and pubovaginal sling, are limited. Safe durable treatments with absorbable graft materials that promote a beneficial host response are intriguing but may be far from clinical implementation. Stem cell therapy for the treatment of stress urinary incontinence has demonstrated benefit in phase I/II trials but has not been studied in the setting of concomitant treatment of occult SUI with POP surgery and remains in the preclinical phase for the treatment of POP. A personalized approach to concomitant SUI surgery that incorporates individual risk assessment as well as informed patient preferences likely optimizes the risk/benefit ratio and patient satisfaction. Novel therapies, including graft materials and cellular therapies that stimulate a regenerative response, may improve or maintain continence outcomes while mitigating risk and alter the approach to both POP and SUI surgery.

[Assessment before surgical treatment for pelvic organ prolapse: Clinical practice guidelines]

INTRODUCTION

The issue addressed in this chapter of recommendations is: What is the clinical and para-clinical assessment to achieve in women with genital prolapse and for whom surgical treatment has been decided. What are the clinical elements of the examination that must be taken into account as a risk factor of failure or relapse after surgery, in order to anticipate and evaluate possible surgical difficulties, and to move towards a preferred surgical technique?

MATERIAL AND METHODS

This work is based on a systematic review of the literature (PubMed, Medline, Cochrane Library, Cochrane Database of Systemactic Reviews, EMBASE) for meta-analyzes, randomized trials, registries, literature reviews, controlled studies and major not controlled studies, published on the subject. Its implementation has followed the methodology of the HAS on the recommendations for clinical practice, with a scientific argument (with the level of evidence, NP) and a recommendation grade (A, B, C, and professional agreement [AP]).

RESULTS

It suits first of all to describe prolapse, by clinical examination, helped, if needed, by a supplement of imagery if clinical examination data are insufficient or in case of discrepancy between the functional signs and clinical anomalies found, or in case of doubt in associated pathology. It suits to look relapse risk factors (high grade prolapse) and postoperative complications risk factors (risk factors for prothetic exposure, surgical approach difficulties, pelvic pain syndrome with hypersensitivity) to inform the patient and guide the therapeutic choice. Urinary functional disorders associated with prolapse (urinary incontinence, overactive bladder, dysuria, urinary tract infection, upper urinary tract impact) will be search and evaluated by interview and clinical examination and by a flowmeter with measurement of the post voiding residue, a urinalysis, and renal-bladder ultrasound. In the presence of voiding disorders, it is appropriate to do their clinical and urodynamic evaluation. In the absence of any spontaneous or hidden urinary sign, there is so far no reason to recommend systematically urodynamic assessment. Anorectal symptoms associated with prolapse (irritable bowel syndrome, obstruction of defecation, fecal incontinence) should be search and evaluated. Before prolapse surgery, it is essential not to ignore gynecologic pathology.

CONCLUSION

Before proposing a surgical cure of genital prolapse of women, it suits to achieve a clinical and paraclinical assessment to describe prolapse (anatomical structures involved, grade), to look for recurrence, difficulties approach and postoperative complications risk factors, and to appreciate the impact or the symptoms associated with prolapse (urinary, anorectal, gynecological, pelvic-perineal pain) to guide their evaluation and their treatment. © 2016 Published by Elsevier Masson SAS.

Recurrence rate of stress urinary incontinence in females with initial cure after transobturator tape procedure at 3-year follow-up

PURPOSE

To assess recurrence rates of urinary incontinence in women with initial cure after transobturator tape (TOT) procedure at 3-year follow-up.

MATERIALS AND METHODS

Between June 2006 and May 2013, a total of 402 consecutive patients underwent the TOT procedure for female stress urinary incontinence (SUI) at Dongguk University Ilsan Hospital. Of the 402 patients, 223 had sufficient medical records for analysis. Therefore, they were followed-up for 3 years postoperatively. Patient characteristics, urinary symptoms, physical examination, and urodynamic parameters were evaluated. The primary end point of "cure" was defined as the absence of any complaint of urinary leakage without needing pads for usual activities.

RESULTS

Of the 223 patients, 196 patients (87.9%) were initially cured within 6 months postoperatively. Of the 196 patients, 70 (35.7%) had recurrent urinary incontinence at 3 years postoperatively, 51 (26.0%) had SUI, 16 (8.2%) had urgency urinary incontinence, and 3 (1.5%) had mixed urinary incontinence. In univariate analysis, preoperative urinary obstructive symptom was found to significant contributor to the recurrence of urinary incontinence at 3-year postoperatively (p=0.004).

CONCLUSIONS

In our study, 35.7% of the women with initial cure after TOT experienced the recurrence of urinary leakage during the 3-year follow-up. The cure rate of TOT was decreased as time went by, although the initial cure rate was high.

Can we predict detrusor overactivity in women with lower urinary tract symptoms? The King's Detrusor Overactivity Score (KiDOS)

OBJECTIVE

Traditionally, urodynamic studies (UDS) have been used to assess lower urinary tract symptoms (LUTS), but their routine use is now discouraged. While urodynamic stress incontinence is strongly associated with the symptom of stress urinary incontinence (SUI) and a positive cough test, there is a weak relationship between symptoms of overactive bladder and detrusor overactivity (DO). The aim of our study was to develop a model to predict DO in women with LUTS.

STUDY DESIGN

This prospective study included consecutive women with LUTS attending a urodynamic clinic. All women underwent a comprehensive clinical and urodynamic assessment. The effect of each variable on the odds of DO was estimated both by univariate analysis and adjusted analysis using logistic regression.

RESULTS

1006 women with LUTS were included in the study with 374 patients (37%) diagnosed with DO. The factors considered to be the best predictors of DO were urgency urinary incontinence, urge rating/void and parity (p-value<0.01). The absence of SUI, vaginal bulging and previous continence surgery were also good predictors of DO (p-value<0.01). We have created a prediction model for DO based on our best predictors. In our scoring system, presence of UUI scores 5; mean urge rating/void≥3 scores 3; parity≥2 scores 2; previous continence surgery scores -1; presence of SUI scores -1; and the complaint of vaginal bulging scores -1. If a criterion is absent, then the score is 0 and the total score can vary from a value of -3 to +10. The Receiver Operating Characteristic (ROC) analysis for the overall cut-off points revealed an area under the curve of 0.748 (95%CI 0.741, 0.755).

CONCLUSION

This model is able to predict DO more accurately than a symptomatic diagnosis alone, in women with LUTS. The introduction of this scoring system as a screening tool into clinical practice may reduce the need for expensive and invasive tests to diagnose DO, but cannot replace UDS completely.

Five-year follow-up study of Monarc transobturator tape for surgical treatment of primary stress urinary incontinence

INTRODUCTION AND HYPOTHESIS

We hypothesized that transobturator tape (TOT) is safe and efficacious for the treatment of urodynamic stress incontinence in the long term.

METHODS

We conducted a prospective study of patients with confirmed urodynamic stress incontinence (USI) who underwent a Monarc^TM TOT procedure in a tertiary center between February 2006 and March 2009 without other concurrent surgical procedures. Urodynamics were conducted at 1 and 3 years postoperatively. Subjective evaluation included Incontinence Impact Questionnaire (IIQ-7), Urinary Distress Inventory Questionnaire (UDI-6), and Pelvic Organ Prolapse/Urinary Incontinence Sexual Questionnaire (PISQ-12). Objective cure was defined as no urinary leakage demonstrable on provocative filling cystometry and/ or 1-h pad test of <2 g. Subjective cure was based on a negative response to question 3 in UDI-6. Paired-samples t test, chi-square, and Fisher exact tests were applied; p < 0.05 was considered significant. The log-rank tests were used to compare event-free survival.

RESULTS

Sixty patients were enrolled, and 56 were evaluated at 5 years postoperatively. The majority were middle aged, postmenopausal, and overweight. Mean operating time was 31.1 ± 8.9 min, intraoperative complications were minor, and median period of follow-up was 80.3 ± 9.6 months. At 5 years of follow-up, objective and subjective cure rates were 89.3 % and 87.5 %, respectively. No mesh-related complications were seen. One patient needed a repeat midurethral sling procedure, and one patient each had bladder and bowel cancer.

CONCLUSION

Monarc TOT was safe and retained its high cure rate in the short- and long-term treatment of stress urinary incontinence.

TVT for the treatment of urodynamic stress incontinence: Efficacy and adverse effects at 13-year follow-up

AIM

To assess long-term subjective, objective, and urodynamic outcomes of retropubic mid-urethral slings at 13-year follow-up.

METHODS

This was a prospective observational study. Consecutive women with proven urodynamic stress incontinence were treated with standard retropubic tension free vaginal tape (TVT). Patients with mixed incontinence and/or anatomic evidence of pelvic organ prolapse were excluded. All the included patients underwent preoperative clinical and urodynamic evaluations. During follow-up examinations, women were assessed for subjective satisfaction and objective cure rates. The Cox model was used in order to investigate factors predicting the risk of recurrent stress urinary incontinence (SUI), over the study period.

RESULTS

Overall, 55 patients were suitable for the analysis. At 13-year follow-up, 47 out of 55 (85.5%) patients declared themselves cured (p-for-trend 0.02) and 48 out of 58 (87.2%) were at least improved (p-for-trend 0.07). No significant deterioration of objective cure rates was observed over time (P = 0.29). At the time of the last evaluation, 50 out of 55 (90.9%) women were objectively cured; urodynamic evaluation confirmed this finding in 49 (89.1%) patients. Considering factors predictive of SUI recurrence, we observed that, via multivariate analysis, obesity (HR 7.2; P = 0.01) and maximum detrusor pressure during the voiding phase ≤29 cmH₂ O (HR 8.0; P = 0.01) were the only independent predictors of recurrent SUI.

CONCLUSION

Our data confirmed that TVT is a highly effective and safe procedure also at 13-year follow-up. Interestingly, we observed a significant decrease of subjective satisfaction over time. Neurourol. Urodynam. 36:192-197, 2017. © 2015 Wiley Periodicals, Inc.

When Does Neoadjuvant Chemotherapy Really Avoid Radiotherapy? Clinical Predictors of Adjuvant Radiotherapy in Cervical Cancer

BACKGROUND

The aim of this study was to identify clinical variables that may predict the need for adjuvant radiotherapy after neoadjuvant chemotherapy (NACT) and radical surgery in locally advanced cervical cancer patients.

METHODS

A retrospective series of cervical cancer patients with International Federation of Gynecology and Obstetrics (FIGO) stages IB2-IIB treated with NACT followed by radical surgery was analyzed. Clinical predictors of persistence of intermediate- and/or high-risk factors at final pathological analysis were investigated. Statistical analysis was performed using univariate and multivariate analysis and using a model based on artificial intelligence known as artificial neuronal network (ANN) analysis.

RESULTS

Overall, 101 patients were available for the analyses. Fifty-two (51 %) patients were considered at high risk secondary to parametrial, resection margin and/or lymph node involvement. When disease was confined to the cervix, four (4 %) patients were considered at intermediate risk. At univariate analysis, FIGO grade 3, stage IIB disease at diagnosis and the presence of enlarged nodes before NACT predicted the presence of intermediate- and/or high-risk factors at final pathological analysis. At multivariate analysis, only FIGO grade 3 and tumor diameter maintained statistical significance. The specificity of ANN models in evaluating predictive variables was slightly superior to conventional multivariable models.

CONCLUSIONS

FIGO grade, stage, tumor diameter, and histology are associated with persistence of pathological intermediate- and/or high-risk factors after NACT and radical surgery. This information is useful in counseling patients at the time of treatment planning with regard to the probability of being subjected to pelvic radiotherapy after completion of the initially planned treatment.

Does preoperative urodynamic testing improve surgical outcomes in patients undergoing the transobturator tape procedure for stress urinary incontinence? A prospective randomized trial

Purpose

Urodynamic studies are commonly performed as part of the preoperative work-up of patients undergoing surgery for stress urinary incontinence (SUI). We aimed to assess the extent to which these urodynamic parameters influence patient selection and postoperative outcomes.

Materials and Methods

Patients presenting with SUI were randomly assigned to two groups: one undergoing office evaluation only and the other with a preoperative urodynamic work-up. Patients with unfavorable urodynamic parameters (detrusor overactivity [DO] and/or Valsalva leak point pressure [VLPP]<60 cm H₂O and/or maximum urethral closure pressure [MUCP]<20 cm H₂O) were excluded from the urodynamic testing group. All patients in both groups underwent the transobturator midurethral sling procedure. Evaluation for treatment success (reductions in urogenital distress inventory and incontinence impact questionnaire scoring along with absent positive stress test) was done at 6 months and 1 year postoperatively.

Results

A total of 72 patients were evaluated. After 12 patients with any one or more of the abnormal urodynamic parameters were excluded, 30 patients were finally recruited in each of the "urodynamic testing" and "office evaluation only" groups. At both the 6- and the 12-month follow-ups, treatment outcomes (reduction in scores and positive provocative stress test) were significantly better in the urodynamic testing group than in the office evaluation only group (p-values significant for all outcomes).

Conclusions

Our findings showed statistically significantly better treatment outcomes in the urodynamic group (after excluding those with poor prognostic indicators such as DO, low VLPP, and MUCP) than in the office evaluation only group. We recommend exploiting the prognostic value of these urodynamic parameters for patient counseling and treatment decisions.

Benefit of pelvic floor muscle therapy in improving sexual function in women with stress urinary incontinence: a pretest-posttest intervention study

Very few data are available on the effect of pelvic floor muscle training on sexual function in incontinent women. The authors used the Female Sexual Function Index to assess the effect of pelvic floor muscle training on female sexual function. Participants included women with stress urinary incontinence, without overactive bladder symptoms, who completed a 3-month pelvic floor muscle training. All patients completed the Female Sexual Function Index and the International Consultation on Incontinence Questionnaire-Short Form at baseline and at the 3-month follow-up. Thirty-four patients completed all of the questionnaires; 64.7% patients were referred with stress urinary incontinence without sexual disorders, while 35.3% complained of stress urinary incontinence and sexual symptoms. The International Consultation on Incontinence Questionnaire-Short Form score significantly decreased after 3 months of pelvic floor muscle training (p =.01). The Female Sexual Function Index score significantly improved after pelvic floor muscle training even in women with sexual disorders (12.5 ± 9.5 vs. 29.7 ± 3.7; p <.001). This study showed that pelvic floor muscle training may improve female sexual function in women with pure stress urinary incontinence.

Urodynamic evaluation: can it prevent the need for surgical intervention in women with apparent pure stress urinary incontinence?

OBJECTIVES

To identify how many patients with symptoms of pure stress urinary incontinence (SUI) do not require any surgical treatment on the basis of urodynamics (UDS) and how many patients still do not require surgery 1 year after UDS. To assess the outcomes of these patients at 12-month follow-up.

PATIENTS AND METHODS

Women with pure SUI received UDS and were prospectively divided into four groups, comprising women with: urodynamic stress incontinence (USI); detrusor overactivity (DO); USI + DO; and inconclusive UDS. Women with USI underwent a Tension Free Vaginal Tape (Obturator) (TVT-O) procedure (Gynecare; Ethicon Inc., Somerville, NJ, USA), whereas women with DO ±/- USI were recommended 24-week antimuscarinic therapy. Follow-up was scheduled at 3 and 12 months. To define subjective outcomes, all patients completed the International Consultation on Incontinence Questionnaire - short form, the Patient Global Impression - Improvement and the Urinary Distress Inventory. Patients were considered cured if they presented a negative stress test, a score reduction of at least 80% on the Urinary Distress Inventory and a response of 'much better' or 'very much better' on the Patient Global Impression - Improvement.

RESULTS

Of the 263 women with pure SUI, 74.5% had a urodynamic diagnosis of USI, 10.6% had DO, 8% had USI + DO and 6.8% had inconclusive UDS. At 12-month follow-up, 165/181 (91.6%) women in group 1 were considered cured post-TVT-O; in the other groups, 33/67 (49.2%) patients were considered cured simply as a result of taking antimuscarinics; 13 of these 67 patients required TVT-O.

CONCLUSIONS

UDS is able to show that several patients with symptoms of pure SUI present an underlying DO and do not require surgery, even 1 year after UDS. In these patients, antimuscarinic treatment appears to ensure a good rate of cure; thus, UDS could lead to the avoidance of several surgical procedures.

TVT-O for the treatment of pure urodynamic stress incontinence: efficacy, adverse effects, and prognostic factors at 5-year follow-up

BACKGROUND

Inside-out tension-free vaginal transobturator tape (TVT-O) is currently one of the most effective and popular procedures for the surgical treatment of female stress urinary incontinence (SUI), but data reporting long-term outcomes are scarce.

OBJECTIVE

To evaluate the efficacy and safety of TVT-O 5-yr implantation for management of pure SUI in women.

DESIGN, SETTING, AND PARTICIPANTS

A prospective observational study was conducted in four tertiary reference centers. Consecutive women presenting with urodynamically proven, pure SUI treated by TVT-O were included. Patients with mixed incontinence and/or anatomic evidence of pelvic organ prolapse were excluded.

INTERVENTION

TVT-O implantation without any associated procedure.

OUTCOME MEASUREMENTS AND STATISTICAL ANALYSIS

Data regarding subjective outcomes (International Consultation on Incontinence-Short Form [ICIQ-SF], Patient Global Impression of Improvement, patient satisfaction scores), objective cure (stress test) rates, and adverse events were collected during follow-up. Multivariable analyses were performed to investigate outcomes.

RESULTS AND LIMITATIONS

Of the 191 women included, 21 (11.0%) had previously undergone a failed anti-incontinence surgical procedure. Six (3.1%) patients were lost to follow-up. The 5-yr subjective and objective cure rates were 90.3% and 90.8%, respectively. De novo overactive bladder (OAB) was reported by 24.3% of patients at 5-yr follow-up. Median ICIQ-SF score significantly improved from 17 (interquartile range [IQR]:16-17) preoperatively to 0 (IQR: 0-2) (p<0.0001). Failure of a previous anti-incontinence procedure was the only independent predictor of subjective recurrence of SUI (hazard ratio [HR]: 4.4; p = 0.009) or objective (HR: 3.7; p = 0.02). No predictive factor of de novo OAB was identified.

CONCLUSIONS

TVT-O implantation is a highly effective option for the treatment of women with pure SUI, showing a very high cure rate and a low incidence of complications after 5-yr follow-up.

Transobturator vaginal tape for the treatment of stress urinary incontinence in elderly women without concomitant pelvic organ prolapse: is it effective and safe?

OBJECTIVE

To evaluate the efficacy and safety of the transobturator approach (TVT-O) for the surgical management of stress urinary incontinence (SUI) in older women.

STUDY DESIGN

Between 2007 and 2010, all consecutive women with SUI undergoing an isolated TVT-O procedure were prospectively enrolled in this study. Patients were divided into two groups by age: older women (≥ 70 years old) were included in group 1, while younger women (< 70 years old) in group 2. Intra- and post-operative outcomes were compared between the groups.

RESULTS

During the study period 181 women met the inclusion criteria and were included for final analysis. Among these women, 60 (33.1%) and 121 (66.9%) were included in groups 1 and 2 respectively. After a median follow-up of 26 (IQR 15-41) months for the younger and 25 (IQR 18-40) months for older patients (p>0.99), no differences were observed between the two groups in terms of cure rate (92.5% vs. 88.3%; p=0.40). No differences were observed in terms of voiding dysfunction, vaginal erosion and persistent groin pain, or in terms of onset of de novo overactive bladder (9.0% vs. 13.3%; p=0.44).

CONCLUSIONS

TVT-O appears to be a safe and effective procedure for the management of stress urinary incontinence also in elderly population.

A QSRR Modeling of Hazardous Psychoactive Designer Drugs Using GA-PlS and L-M ANN

The hazardous psychoactive designer drugs are compounds in which part of the molecular structure of a stimulant or narcotic has been modified. A quantitative structure-retention relationship (QSRR) study based on a Levenberg-Marquardt artificial neural network (L-M ANN) was carried out for the prediction of the capacity factor (k′) of hazardous psychoactive designer drugs that contain Tryptamine, Phenylethylamine and Piperazine. The genetic algorithm-partial least squares (GA-PLS) method was used as a variable selection tool. A PLS method was used to select the best descriptors and the selected descriptors were used as input neurons in neural network model. For choosing the best predictive model from among comparable models, square correlation coefficient (R2) for the whole set is suggested to be a good criterion. Finally, to improve the results, structure-retention relationships were followed by nonlinear approach using artificial neural networks and consequently better results were obtained. Also this demonstrates the advantages of L-M ANN. This is the first research on the QSRR of the designer drugs using the GA-PLS and L-M ANN.

Tension-free vaginal tape for the treatment of urodynamic stress incontinence: efficacy and adverse effects at 10-year follow-up

BACKGROUND

One of the most effective and popular current procedures for the surgical treatment of stress urinary incontinence (SUI) is tension-free midurethral slings.

OBJECTIVE

To evaluate the outcomes of women with retropubic tension-free vaginal tape (TVT) for urodynamic stress incontinence (USI) after 10-yr follow-up.

DESIGN, SETTING, AND PARTICIPANTS

This was a prospective observational study. Consecutive women with proven USI were treated with TVT. Patients with mixed incontinence and/or anatomic evidence of pelvic organ prolapse were excluded.

INTERVENTION

Standard retropubic TVT.

MEASUREMENTS

Patients underwent preoperative clinical and urodynamic evaluations. During follow-up examinations, women were assessed for subjective satisfaction and objective cure rates. Multivariable analyses were performed to investigate outcomes.

RESULTS AND LIMITATIONS

A total of 63 women were included. After 10 yr, 5 patients (8%) were lost or no longer evaluable. The 10-yr subjective, objective, and urodynamic cure rates were 89.7%, 93.1%, and 91.4%, respectively. These rates were stable across the whole study period (p>0.99). De novo overactive bladder was reported by 30.1% and 18.9% of patients at 3-mo and 10-yr follow-up, respectively (p for trend = 0.19). A total of 84.2% of women with detrusor overactivity received antimuscarinic drugs, but 43.8% were nonresponders 12 wk later. At multivariable analysis, maximum detrusor pressure during the filling phase >9cm H(2)O (hazard ratio [HR]: 16.2; p=0.01) and maximum detrusor pressure during the voiding phase ≤29cm H(2)O (HR: 8.0; p=0.01) were independent predictors for the recurrence of SUI, as well as obesity was for the recurrence of objective SUI (HR: 17.1; p=0.01) and of USI (HR: 8.9; p=0.02), respectively. Intraoperatively, bladder perforation occurred in two cases; no severe bleeding or other complications occurred.

CONCLUSIONS

The 10-yr results of this study seem to demonstrate that TVT is a highly effective option for the treatment of female SUI, recording a very high cure rate with low complications after a 10-yr follow-up.