Sling Procedures for the Treatment of Stress Urinary Incontinence: Comparison of National Practice Patterns between Urologists and Gynecologists

Surgeon Upper Extremity Kinematics During Error and Error-Free Retropubic Trocar Passage

INTRODUCTION AND HYPOTHESIS

Surgeon kinematics play a significant role in the prevention of patient injury. We hypothesized that elbow extension and ulnar wrist deviation are associated with bladder injury during simulated midurethral sling (MUS) procedures.

METHODS

We used motion capture technology to measure surgeons' flexion/extension, abduction/adduction, and internal/external rotation angular time series for shoulder, elbow, and wrist joints. Starting and ending angles, minimum and maximum angles, and range of motion (ROM) were extracted from each time series. We created anatomical multibody models and applied linear mixed modeling to compare kinematics between trials with versus without bladder penetration and attending versus resident surgeons. A total of 32 trials would provide 90% power to detect a difference.

RESULTS

Out of 85 passes, 62 were posterior to the suprapubic bone and 20 penetrated the bladder. Trials with versus without bladder penetration were associated with more initial wrist dorsiflexion (-27.32 vs -9.03°, p = 0.01), less final elbow flexion (39.49 vs 60.81, p = 0.03), and greater ROM in both the wrist (27.48 vs 14.01, p = 0.02), and elbow (20.45 vs 12.87, p = 0.04). Wrist deviation and arm pronation were not associated with bladder penetration. Compared with attendings, residents had more ROM in elbow flexion (14.61 vs 8.35°, p < 0.01), but less ROM in wrist dorsiflexion (13.31 vs 20.33, p = 0.02) and arm pronation (4.75 vs 38.46, p < 0.01).

CONCLUSIONS

Bladder penetration during MUS is associated with wrist dorsiflexion and elbow flexion but not internal wrist deviation and arm supination. Attending surgeons exerted control with the wrist and forearm, surgical trainees with the elbow. Our findings have direct implications for MUS teaching.

Specialty-Specific Trends in Surgery for Apical Pelvic Organ Prolapse Post Vaginal Mesh

IMPORTANCE

Since transvaginal mesh (VM) kits for apical pelvic organ prolapse (APOP) were labeled "high-risk" in 2016 and subsequently banned in 2019 by the U.S. Food and Drug Administration, the most common remaining surgical options include abdominal mesh-augmented sacrocolpopexy (AS) and transvaginal native tissue suspension (VN).

OBJECTIVE

The objective of this study was to determine temporal trends in APOP procedures for urologists and gynecologists.

STUDY DESIGN

Between 2011 and 2020, the American College of Surgeons National Surgical Quality Improvement Program database was queried for AS, VM, and VN.

RESULTS

There were 26,477 cases of APOP repair (32% AS, 6% VM, 62% VN) included, 9% by urologists. Urologists operated on older (65 vs 61 years) patients with more medical comorbidities. Urologists performed significantly higher proportion of AS (65% vs 29%) and VM (8% vs 6%) relative to VN (27% vs 65%) than gynecologists ( P < 0.0001). Transvaginal mesh utilization has decreased over time for both specialties ( P < 0.05); nonsignificant trends toward increasing AS ( P = 0.1646) in urologists and VN ( P = 0.0913) in gynecologists concurrently occurred. Significant independent predictors of the operating surgeon being a urologist were surgery being performed in the latter half of the cohort (2016-2020; odds ratio [OR], 1.22), non-White patient race (OR < 1 for all), a concomitant sling being placed (OR = 0.89), the surgery being VM (OR = 2.95) or AS (OR = 4.36), the patient being older (OR > 1 for each age range), and having a higher frailty index score (OR = 1.16).

CONCLUSIONS

Significant differences in APOP repair choices exist between specialties. Urologists operate on older, more medically complex patients while demonstrating a strong preference for mesh-augmented compared with transvaginal native tissue repairs.

Comparison of perioperative adverse events following suburethral sling placement using synthetic mesh, autologous rectus fascia, and autologous fascia lata in a national surgical registry

AIMS

To assess and compare 30-day perioperative adverse events following suburethral sling surgery using synthetic mesh, autologous rectus fascia, and autologous fascia lata in women.

METHODS

This was a retrospective cohort study of patients who underwent fascial or synthetic sling placement for stress urinary incontinence between 2008 and 2021 using the American College of Surgeons' National Surgical Quality Improvement Program database. Current Procedural Terminology codes were used to identify patients undergoing each type of sling procedure. Multivariable regression analysis with stepwise regression was used to assess the odds of composite adverse events (e.g., urinary tract infection, surgical site infection, pulmonary embolism, and other reportable events) between cohorts.

RESULTS

Of the 41 533 female patients who underwent isolated suburethral sling placement without concurrent procedures, 41 292 (99.4%) received a synthetic mesh sling, and 241 (0.6%) received an autologous facial sling. In the fascial sling cohort, 160 (66.4%) underwent rectus fascia harvest and 81 (33.6%) underwent fascia lata harvest. Sling surgeries involving autologous fascia were associated with increased odds of adverse events compared to those involving synthetic mesh, even after adjusting for confounders (adjusted odds ratio [aOR]: 3.63, 95% confidence interval [CI]: 2.56-5.15). Compared to fascial slings from rectus fascia, slings from fascia lata were associated with increased odds of composite adverse events (aOR: 2.11, 95% CI: 1.03-4.04). However, with the exclusion of urinary tract infections, the adverse event rate was similar between slings using the two fascial harvest techniques (aOR: 1.93, 95% CI: 0.81-4.63).

CONCLUSIONS

In this retrospective database study, suburethral sling surgeries using autologous fascia were independently associated with a 3.6-fold increase in odds of 30-day perioperative adverse events compared to sling surgeries using synthetic mesh.

Cognitive models for mentally visualizing a sharp instrument in a blind procedure

Purpose

Our objective was to understand the cognitive strategies used by surgeons to mentally visualize navigation of a surgical instrument through blind space.

Methods

We conducted semi-structured interviews with 15 expert and novice surgeons following simulated retropubic trocar passage on 3D-printed models of pelvises segmented from preop MRIs. Midurethral sling surgery involves blind passage of a trocar among the urethra, bladder, iliac vessels, and bowel while relying primarily on haptic feedback from the suprapubic bone (SPB) for guidance. Our conceptual foundation was based on Lahav's study on blind people's mental mapping of spaces using haptic cues. Participants detailed how they mentally pictured the trocar's location relative to vital anatomy. We coded all responses and used constant comparative analysis to generate themes, confirmed with member checking.

Results

Expert and novice participants utilized multiple cognitive strategies combined with haptic feedback to accomplish safe trocar passage. Some used a step-by-step route strategy, visualizing sequential 2D axial images of anatomy adjacent to the SPB. Others used a map strategy, forming global 3D pictures. Although these mental pictures vanished when they were "lost," a safe zone could be reestablished by touching the SPB. Experts were more likely to relate their body position to the trocar path and rely on minor variations in resistance. Novices were more inclined toward backtracking of the trocar.

Conclusions

Our findings may be extended to any blind surgical procedure. Teaching visualization strategies and incorporating tactile feedback can be used intraoperatively to help learners navigate their instrument safely around vital organs.

Three-year Follow-up of a Single Incision Sling Procedure Performed Under Local Anesthesia in an Office Setting

OBJECTIVE

To assess the 3-year success of placing a single-incision midurethral sling (SIMS) using the Dynamic Intraoperative Standing Sling Technique (DISST) in an office setting under local anesthesia.

METHODS

This is a prospective case series of 20 women who underwent in-office SIMS procedure by the DISST from July 2019 to February 2020. This is an extension of our pilot study (11) and all 20 patients were evaluated at a mean follow-up of 34.3months. Success was defined as a composite score of objective success (negative standing cough test at bladder fullness), subjective success based on the modified PGI-I score of "very much better" or "much better," and no retreatment for stress urinary incontinence. Secondary objectives were adverse events, de novo overactivity of the bladder, recurrent urinary tract infections, voiding dysfunction, pain/dyspareunia, and influence on sexual function.

RESULTS

The composite success rate was 95% (95% CI [75.1, 99.9]) at the 36-month follow-up. The significant improvement in MESA scores was maintained over the study period. There were no cases of de novo urgency, mesh exposure, postop voiding dysfunction or recurrent urinary tract infections. There were no cases of de novo dyspareunia.

CONCLUSION

SIMS placed by the DISST technique under local anesthesia in an office setting has shown sustained efficacy over a 3-year period with no decrease in cure. Subjects remained dry and reported excellent improvement in symptoms and quality of life at the 36-month follow-up visit.

Differences in Surgical Practice Patterns of Vaginal Native Tissue Repair for Pelvic Organ Prolapse Between Urologists and Gynecologists

IMPORTANCE

Surgeon specialty training may influence the combination of transvaginal procedures for pelvic organ prolapse (POP) repair. Isolated transvaginal anterior compartment repair (AR) without concurrent apical suspension (ApS) is a known risk factor for POP recurrence.

OBJECTIVES

Our primary aim was to compare the prevalence of isolated AR between urologists versus gynecologists. Our secondary aim was to compare associated postoperative complications.

STUDY DESIGN

We queried the American College of Surgeons National Surgical Quality Improvement Program for vaginal POP repair procedures (Current Procedural Terminology codes 57240, 57260, 57265, 57268, 57282, 57283) over a 5-year period by designated surgical specialty. We analyzed the relationships between specialty, vaginal repair type, operative details, and 30-day postoperative complications.

RESULTS

Between January 2015 and December 2019, we included 16,093 women who underwent transvaginal POP repair, 90% performed by gynecologists and 10% by urologists. Urologists were more likely to perform an isolated AR without concurrent ApS (56% vs 47%, P < 0.0001). Gynecologists performed more isolated ApS (11% vs 9%) and combined AR with ApS (43% vs 35%, P < 0.0001). Overall, concurrent urethral sling placement was performed in 27% of cases, regardless of POP repair type, with no difference between specialties (P > 0.05). There were no differences in 30-day reoperations, readmissions, surgical site infections, urinary tract infections, or hospital stay lengths between specialties (P > 0.05).

CONCLUSIONS

Urologists perform a minority of vaginal POP repairs and were more likely to perform isolated AR than gynecologists. The absence of concurrent ApS may increase the likelihood of prolapse recurrence. Immediate complication rates for each procedure did not differ.

[The new guideline "Diagnosis and therapy of female urinary incontinence" AWMF register no.: 015-091-important to know]

BACKGROUND

The new interdisciplinary S2k guideline "Female urinary incontinence" has been online since December 31, 2021 under the AWMF register number: 015-091. The guideline combines the two previously separately published guidelines "Urinary stress incontinence in women" and "Overactive bladder in women" and integrates the previously independent guideline "Sonography in the context of urogynaecological diagnostics".

OBJECTIVES

The focus is on the identification of the three most common types of urinary incontinence in women "stress incontinence", "urge incontinence" and "mixed incontinence" through appropriate diagnostics and their conservative and surgical therapy. In addition, a chapter on the management of extraurethral urinary incontinence in urogenital fistulas has been included.

METHODS

The guideline was created under the leadership of the "German Society for Gynecology and Obstetrics" (DGGG) and the Working Group for Urogynecology and Pelvic Floor Reconstruction e. V. (AGUB). In the interdisciplinary guideline group, six urologists from the working group "Urological functional diagnostics and female urology" were also involved as elected representatives of the German Society for Urology (DGU). For the validity in German-speaking areas, mandate holders from Austria and Switzerland were present.

RESULTS

The clinically and practically relevant and new consensus recommendations for diagnostics and therapy were approved after systematic research, selection, evaluation and synthesis of the evidence base. Evidence grading was not intended as the S2k guideline. The individual statements and recommendations were differentiated linguistically-not symbolically. For a complete overview, we recommend studying the long version "Diagnostics and Therapy of Female Urinary Incontinence" at www.AWMF.org or the short version in two parts by Naumann G. et al. in Obstetrics and Women's Health (in press), which will be published soon.

Vaginal repair of vesicovaginal fistula: comparison of national practice patterns by surgeon specialty

INTRODUCTION AND HYPOTHESIS

There are limited data comparing patient and operative characteristics for vaginal repair of vesicovaginal fistula (VVF) by surgeon specialty. Our objective was to compare national practice patterns by surgeon specialty for vaginal repair of VVF.

METHODS

Using the American College of Surgeons National Surgical Quality Improvement Program database, we conducted a retrospective cohort analysis of women who underwent vaginal repair of VVF from 2010 to 2019. Demographic and perioperative characteristics were compared by surgeon specialty.

RESULTS

A total of 252 women were analyzed. Urologists performed 57% of cases (n=144), gynecologists performed 38% (n=96), and general surgeons performed 5% (n=12). There were differences among surgeon specialties in patient characteristics including age (p=0.002), creatinine (p=0.002), hypertension (p=0.02), morbidity probability (p<0.001), hospital stay (p<0.001), inpatient status (p=0.03). Urologists were more likely than gynecologists to use grafts/flaps (p=0.002). There were trending differences among surgeon specialties in patient race (p=0.07) and ethnicity (p=0.06). Urologists and gynecologists were more likely to operate on younger, healthier patients with differences in racial populations. When directly comparing urologists with gynecologists, there were differences in race (p=0.05) and a trending difference in ethnicity (p=0.06), General surgeons were more likely to operate on older white women with worse health status, more concomitant procedures, and longer hospital stay.

CONCLUSIONS

Urologists, gynecologists, and general surgeons perform vaginal repair of VVF. Among these specialties, there were differences in patient and perioperative characteristics. This information may help referring providers and patients to understand which types of surgical providers most commonly manage VVF.

Long-Term Outcomes After Midurethral Mesh Sling Surgery for Stress Urinary Incontinence

OBJECTIVES

Although midurethral mesh slings are the criterion standard surgical treatment for stress urinary incontinence (SUI), limited data exist regarding long-term outcomes. Thus, our objectives were to evaluate the long-term risk of sling revision and the risk of repeat SUI surgery up to 15 years after the initial sling procedure and to identify predictors of these outcomes.

METHODS

Using a population-based cohort of commercially insured individuals in the United States, we identified women aged 18 years or older who underwent a sling procedure between 2001 and 2018. For sling revision, we evaluated indications (mesh exposure or urinary retention). We estimated the cumulative risks of sling revision and repeat SUI surgery annually using Kaplan-Meier survival curves and evaluated predictors using Cox proportional hazards models.

RESULTS

We identified 334,601 mesh sling surgical procedures. For sling revision, the 10-year and 15-year risks were 6.9% (95% confidence interval [CI], 6.7-7.0) and 7.9% (95% CI, 7.5-8.3), with 48.7% of sling revisions associated with mesh exposure. The 10-year and 15-year risks of repeat SUI surgery were 14.5% (95% CI, 14.2-14.8) and 17.9% (95% CI, 17.3-18.6). Women aged 18-29 years had an elevated risk for both sling revision (hazard ratio, 1.20; 95% CI, 1.15-1.25) and repeat SUI surgery (hazard ratio, 1.30; 95% CI, 1.25-1.37) compared with women 70 years and older.

CONCLUSIONS

In our study population, the 15-year risk of sling revision was 7.9%, with nearly half of revisions due to mesh exposure. These findings provide critical long-term data to support informed decisions for women and health care providers considering midurethral mesh slings.

Current Overview of Surgical Options for Female Stress Urinary Incontinence

Stress urinary incontinence (SUI) is a highly prevalent health condition that significantly impacts the quality of life. Traditional methods of treatment for SUI, such as pubovaginal sling and Burch colposuspension, have been replaced by the midurethral sling because of its high efficacy, low complication and morbidity rates, and short learning curve. Although multiple behavioral and operative treatments exist, midurethral slings are the gold standard for the treatment of SUI in women. However, several reports have raised concerns about complications caused by the synthetic mesh used in midurethral slings. Therefore, surgical treatment for SUI in women must be chosen with care, taking into account potential complications. Herein, we review the current safety issues pertaining to the use of meshes, the efficacy of traditional surgeries, old and new midurethral slings, and recent data comparing the efficacy and safety of different surgical options. This review is aimed at developing practical guidelines for choosing surgical options for women with SUI.

Analysis of the Completely Dry Rate Over Time After Mid-urethral Sling in a Real-world Clinical Setting

OBJECTIVE

To improve patient counseling regarding mid-urethral slings (MUS), we performed an analysis of MUS patients dry at initial follow-up to evaluate probability of remaining dry over time, and analyzed clinical factors potentially influencing the probability of remaining dry.

METHODS

A retrospective review of our prospectively-collected institutional database identified patients who underwent retropubic MUS (RMUS) or transobturator MUS (TMUS) between January 2001 and March 2016 and were completely dry, defined as an answer of "not at all" to UDI-6 question 3, at first follow-up within 1.5 years of surgery. Proportion remaining dry over time was estimated by Kaplan-Meier. Associated factors were evaluated using Cox proportional hazards modeling. Proportion with urge urinary incontinence at time of sling failure was assessed.

RESULTS

Of 1102 patients undergoing MUS, 38.4% returned questionnaires and 47.5% of these were completely dry at initial follow-up (139 RMUS, 62 TMUS). Probability (95% CI, n = total patients) of remaining dry after RMUS at 3, 5, and 10 years was 72% (64%-81%, n = 70), 60% (51%-70%, n = 51), and 26% (18%-43%, n = 17). Probability estimates for TMUS at 3 and 5 years were 74% (62%-88%, n = 27) and 50% (35%-70%, n = 14). Obesity (Hazard ratio 2.22, P = .003) and age (Hazard ratio 1.043, P < .001) were associated with lower probability of remaining dry after RMUS. Of patients no longer completely dry at last follow-up, 72% RMUS and 75% TMUS had urge urinary incontinence.

CONCLUSION

In our real-world cohort, patients who are dry within the first 1.5 years following MUS have ≥50% chance of remaining dry for 4 more years.

Efficacy and Safety of Incontinence Surgery According to the Surgeon's Specialty and Performance of a Preoperative Urodynamic Study

Purpose

The aim of this study was to analyze the efficacy and to estimate the complication rate of incontinence surgery according to the surgeon’s specialty and whether a preoperative urodynamic study (UDS) was performed, using a nationally representative dataset.

Methods

We enrolled 356,155 women over 20 years old who had undergone surgery for stress urinary incontinence between 2006 and 2015. Patients were followed for up to 3 years to analyze the reoperation and complication rates. Data were obtained from the National Health Claims Database of the National Health Insurance Service (NHIS) of Korea. Multiple Cox regression analysis was conducted to examine the efficacy and safety of incontinence surgery according to the surgeon’s specialty and whether a preoperative UDS was performed.

Results

The hazard ratio (HR) for reoperation was significantly higher for procedures performed by nonurologists than for procedures performed by urologists (HR, 1.174; 95% confidence interval [CI], 1.103–1.249). Acute urinary retention, postoperative infections, procedure-associated pain, and other complications were also more common in procedures performed by nonurologists than in those performed by urologists. When stratified by whether a preoperative UDS was performed, the HR for reoperation according to the surgeon’s specialty varied by performance of a preoperative UDS. While the reoperation rate was significantly higher in procedures performed by non-urologists when a preoperative UDS was performed (HR, 1.208; 95% CI, 1.122–1.3), there was no significant difference in the HRs for reoperation according to specialty when a preoperative UDS was not performed.

Conclusions

This population-based study showed that the postoperative outcomes of incontinence surgery were dependent upon the surgeon’s specialty and that the reoperation rate according to the surgeon’s specialty varied based on whether a preoperative UDS was performed.