Learning curves and surgical outcomes for proctored adoption of laparoscopic ventral mesh rectopexy: cumulative sum curve analysis

The Learning Curve in Urogynecology and Functional Urology: A Systematic Review

INTRODUCTION AND HYPOTHESIS

When adopting new methods, surgeons may experience a period of complexity and longer operation times because of their inexperience. This period is known as the "learning curve." This study was aimed at systematically reviewing the current literature on functional urology learning curves.

METHODS

A comprehensive search was conducted across multiple databases from inception to July 2023 with no language restrictions. All original studies on urogynecological and functional urological procedures, including cross-sectional, cohort, and clinical trials, were eligible for inclusion. Relevant data were extracted, and methodological quality was appraised using standardized Joanna Briggs Institute critical appraisal tools. To quantitatively investigate learning curves, a mixed-effects generalized linear regression analysis was conducted on studies employing cumulative summation methods.

RESULTS

From the 7,104 records, 68 studies met the inclusion criteria. The majority of studies were observational and the most common outcome measures were surgical duration, blood loss, and hospital stay. The learning curves varied by procedure type-for incontinence surgeries, 15-80 cases were required; for pelvic organ prolapse surgeries, 18-47 cases; for laparoscopic procedures, 10-105 cases; and for robotic procedures, 5-84 cases. The analysis showed that the number of cases required to surpass the learning curve decreased over time, likely reflecting technological advancements and increased surgical experience.

CONCLUSION

The learning curve for surgical procedures varies significantly. It varies between 5 cases for robotic supratrigonal cystectomy to 75 cases for robot-assisted ventral mesh rectopexy or robotic sacrocolpopexy surgery in 84 cases. These variable learning curves highlight the need for structured training programs and ongoing assessment.

Evaluating the Efficacy and Safety of Robotic Versus Conventional Completion Thyroidectomy: A 10-year Experience

BACKGROUND

Robotic thyroidectomy is gaining popularity, yet its role in completion thyroidectomy remains unclear. We aimed to compare robotic vs conventional completion thyroidectomy for thyroid nodules.

METHODS

This retrospective study analyzed patients undergoing completion thyroidectomy from 2010-2020, either by conventional open technique (n = 87) or a robotic remote-access approach (n = 44). Outcomes were compared between groups.

RESULTS

A total of 131 patients were included. The robotic cohort was younger (45.3 ± 14.0 vs 55.5 ± 14.5 years, P < 0.001) with a lower BMI (25.9 ± 5.5 vs 33.7 ± 7.8 kg/m2, P < 0.001). Operative time was longer for robotic procedures (139 min vs 99 min, P < 0.001). Hospital stay was shorter after robotic surgery, with 25% discharged the same day as compared to 5.7% in the open thyroidectomy cohort (P = 0.006). Overall rates of complication were comparable (P = 0.65). Transient recurrent laryngeal nerve palsy occurred in 4.6% of patients, which was similar between both cohorts (P = 0.66).

CONCLUSION

Robotic completion thyroidectomy appears safe and effective, achieving shorter hospitalization than conventional open approaches despite longer operative times. Appropriate patient selection and surgical technique optimization are key. Larger prospective studies should investigate costs and long-term patient-reported outcomes.

Resident Exposure and Involvement in Core Procedural Competencies within Pediatric Plastic Surgery

Introduction: The implementation of competency-based residency training in plastic surgery is underway. Key competencies in plastic surgery have been previously identified, however, within the domain of pediatrics, data suggest limited exposure throughout training for Canadian graduates. This study aims to identify the exposure and involvement of residents in core pediatric cases. Methods: We performed a retrospective, multicenter review of plastic surgery resident case logs (T-Res, POWER, New Innovations) across 10 Canadian, English-speaking training programs between 2004 and 2014. Case logs were coded according to the 8 core pediatric competencies previously identified by a modified Delphi technique. Results: A total of 3061 of 59 405 cases (5.2%) logged by 55 graduating residents were core pediatric procedures with an average of 55.6 ± 23.0 cases logged per resident. The top 3 most commonly logged procedures were cleft lip repair, cleft palate repair, and setback otoplasty. The number of cases per program varied widely with the most at 731 and least at 85 logged cases. Roles across procedures have wide variation and residents are most commonly identified as the assistant rather than surgeon or co-surgeon. Conclusion: These findings highlight variability both within and across residency programs with a paucity of exposure and involvement in pediatric plastic surgery cases. This may present a conflict between current recommendations for residency-specific procedural competencies and true clinical exposure. Further curriculum development and simulation may be of benefit.

European Society of Coloproctology guidance on the use of mesh in the pelvis in colorectal surgery

This is a comprehensive and rigorous review of currently available data on the use of mesh in the pelvis in colorectal surgery. This guideline outlines the limitations of available data and the challenges of interpretation, followed by best possible recommendations.

Evaluation of the learning curve of robot-assisted laparoscopic ventral mesh rectopexy

BACKGROUND

The current standard treatment for external rectal prolapse and symptomatic high-grade internal rectal prolapse is surgical correction with minimally invasive ventral mesh rectopexy using either laparoscopy or robotic assistance. This study examines the number of procedures needed to complete the learning curve for robot-assisted ventral mesh rectopexy (RVMR) and reach adequate performance.

METHODS

A retrospective analysis of all primary RVMR from 2011 to 2019 performed in a tertiary pelvic floor clinic by two colorectal surgeons (A and B) was performed. Both surgeons had previous experience with laparoscopic rectopexy, but no robotic experience. Skin-to-skin operating times (OT) were assessed using LC-CUSUM analyses. Intraoperative and postoperative complications were analyzed using CUSUM analyses.

RESULTS

A total of 182 (surgeon A) and 91 (surgeon B) RVMRs were performed in total. There were no relevant differences in patient characteristics between the two surgeons. Median OT was 75 min (range 46-155; surgeon A) and 90 min (range 63-139; surgeon B). The learning curve regarding OT was completed after 36 procedures for surgeon A and 55 procedures for surgeon B. Both before and after completion of the learning curve, intraoperative and postoperative complication rates remained below a predefined acceptable level of performance.

CONCLUSIONS

36 to 55 procedures are required to complete the learning curve for RVMR. The implementation of robotic surgery does not inflict any additional risks on patients at the beginning of a surgeon's learning curve.

A Minimally Invasive Technique for the 1-Stage Treatment of Complex Pelvic Floor Diseases: Laparoscopic-Pelvic Organ Prolapse Suspension

OBJECTIVE

The aim of this prospective study was to assess the safety and effectiveness of a new single laparoscopic operation devised to relieve obstructed defecation, gynecologic and urinary symptoms in a large series of female patients with multiorgan pelvic prolapse.

METHODS

We submitted 384 female patients to laparoscopic pelvic organ prolapse suspension operation, a new technique based on suspension of the middle pelvic compartment, by using a polypropylene mesh and followed up 368 of them, with defecography performed 12 months after surgery and a standardized protocol.

RESULTS

The 368 patients were followed-up for 36.3 (±4.4) months, Recurrence rate was 4.9% for obstructed defecation syndrome and 3.3% for stress urinary incontinence. Complication rate was 2.9%. The mean period of daily activity resumption was 16.3 days (±4.8 days). Anorectal and urogynecologic symptoms and scores significantly improved after the operation (P < 0.001), with no worsening of anal continence. Incidence of postoperative fecal urgency was 0%. Postoperative defecography showed a significant (P < 0.001) improvement of all parameters in 315 patients (82%). Short Form 36 Health Survey score significantly improved after the operation (P < 0.01). An excellent/good overall Satisfaction Index was reported by 78.0% of patients.

CONCLUSIONS

In our experience the Laparoscopic-Pelvic Organ Prolapse Suspension seems to be safe and effective as a 1-stage treatment of associated pelvic floor diseases. Randomized studies with an appropriate control group and longer follow-up are now needed to assess the effectiveness of this promising technique.

The Thiel cadaveric model for pelvic floor surgery: Best rated in transferable simulation-based training for postgraduate studies

OBJECTIVE

To determine whether the Thiel cadaveric model is better and more realistic than other surgical simulation techniques for learning pelvic floor and perineal surgical procedures according to the opinions of urogynecologists and surgeons participating in international postgraduate pelvic floor surgery courses using cadavers embalmed by the Thiel method.

STUDY DESIGN

An observational prospective study was performed in urogynecologists and surgeons attending international postgraduate pelvic floor and perineal surgery courses using cadavers embalmed by the Thiel method. A survey was completed by the participants after finishing the course. Based on the answers collected, we analyzed the differences, including in the satisfaction degree and teaching level for each surgical procedure, between different surgical simulation models that the participants had already used and the Thiel simulation method employed.

RESULTS

The students recognized that Thiel cadavers present more similarities to patients than other simulation methods. The Thiel cadaveric method was considered by most responders to be the best for the simulation of surgical procedures on the pelvic floor and perineum. Most of the surgeons surveyed recommended conducting these courses with Thiel cadavers for different colleagues in other specialties as a reliable simulation method for training for difficult surgical procedures.

CONCLUSIONS

Participants in the course on pelvic floor surgery in Thiel cadavers recognized that this is the most realistic model for surgical simulation and the best way to gain confidence, self-determination and precise surgical skills for performing pelvic floor and perineal surgery.

Position statement by the Pelvic Floor Society on behalf of the Association of Coloproctology of Great Britain and Ireland on the use of mesh in ventral mesh rectopexy

The following position statement forms part of a response to the current concerns regarding use of mesh to perform rectal prolapse surgery. It highlights the actions being pursued by the Pelvic Floor Society (TPFS) regarding clinical governance in relation to ventral mesh rectopexy (VMR). The following are summary recommendations. Available evidence suggests that mesh morbidity for VMR is far lower than that seen in transvaginal procedures (the main subject of current concern) and lower than that observed following other abdomino-pelvic procedures for urogenital prolapse, e.g. laparoscopic sacrocolpopexy. VMR should be performed by adequately trained surgeons who work within a multidisciplinary team (MDT) framework. Within this, it is mandatory to discuss all patients considered for surgery at an MDT meeting. Clinical outcomes of surgery and any complications resulting from surgery should be recorded in the TPFS-hosted national database (registry) available for this purpose; in addition, all patients should be considered for entry into ongoing and planned UK/European randomized studies where this is feasible. A move towards accreditation of UK units performing VMR will improve performance and outcomes in the long term. An enhanced programme of training including staged porcine, cadaveric and preceptorship sessions will ensure the competence of surgeons undertaking VMR. Enhanced consent forms and patient information booklets are being developed, and these will help both surgeons and patients. There is weak observational evidence that technical aspects of the procedure can be optimized to reduce morbidity rates. Suture material choice may contribute towards morbidity. The available evidence is insufficient to support the use of one mesh over another (biologic vs synthetic); however, the use of polyester mesh is associated with increased morbidity.

Impact of Suture Type on Erosion Rate After Laparoscopic Ventral Mesh Rectopexy: A Case-Matched Study

BACKGROUND

There has been increasing concern and scrutiny in the use of mesh for certain pelvic organ prolapse procedures. However, mesh erosion was often associated with sites of suture fixation of the mesh to the rectum or vagina. Thus, in response to this finding, we replaced our suture material with absorbable monofilament suture.

OBJECTIVE

The purpose of this study was to compare the rates of mesh-related complications after laparoscopic ventral mesh rectopexy, according to the type of suture used in fixation of mesh.

DESIGN

This was retrospective cohort study.

SETTINGS

This study was performed at a high-volume, tertiary care center. It was conducted using a prospective database including patients who underwent laparoscopic ventral mesh rectopexy over a 7-year period.

PATIENTS

A total of 495 cases were included; 296 (60%) laparoscopic ventral mesh rectopexies were performed using a nonabsorbable suture compared with 199 (40%) with an absorbable suture in a case-matched analysis. In addition, 151 cases of laparoscopic ventral mesh rectopexy with nonabsorbable were matched based on age, sex, and time of follow-up, with an equal number of patients using absorbable monofilament suture.

MAIN OUTCOMES MEASURES

Primary outcome was symptomatic mesh erosion after rectopexy. Secondary outcomes included other mesh-related complications and/or reoperations.

RESULTS

The erosion rate was 2% (6/495) in the nonabsorbable suture group, including 4 erosions into the rectum and 2 into the vagina. There was no erosion in the group with absorbable suture. This difference was maintained after matching: after a median follow-up of 6 (12) months, there was no erosion in the absorbable suture group versus 3.3% erosion (n = 5) in the nonabsorbable suture group (p = 0.03).

LIMITATIONS

This study was limited by its retrospective design.

CONCLUSIONS

Mesh-related complications are reduced using absorbable sutures compared with nonabsorbable sutures when performing laparoscopic ventral mesh rectopexy with synthetic mesh without an increase in rectopexy failures. See Video Abstract at http://links.lww.com/DCR/B49. IMPACTO DEL TIPO DE SUTURA EN LA TASA DE EROSIóN DESPUéS DE LA RECTOPEXIA VENTRAL LAPAROSCóPICA CON MALLA: UN ESTUDIO DE CASOS EMPAREJADOS: Ha habido una creciente preocupación y escrutinio en el uso de la malla para ciertos procedimientos de prolapso de órganos pélvicos. Sin embargo, la erosión de la malla a menudo se asoció con sitios de fijación de sutura de la malla al recto o la vagina. Por lo tanto, en respuesta a este hallazgo, reemplazamos nuestro material de sutura con sutura de monofilamento absorbible.Comparar las tasas de complicaciones relacionadas con la malla después de la rectopexia laparoscópica de malla ventral, de acuerdo al tipo de sutura utilizada en la fijación de la malla.Este fue un estudio de cohorte retrospectivo.Este estudio se realizó en un centro de atención de tercer nivel de alto volumen. Se realizó utilizando una base de datos prospectiva que incluía pacientes que se sometieron a una rectopexia de malla ventral laparoscópica durante un período de 7 años.Se incluyeron un total de 495 casos; 296 (60%) rectopexias de malla ventral laparoscópica utilizando una sutura no reabsorbible en comparación con 199 (40%) con una sutura absorbible en un análisis de casos emparejados. Además, 151 casos de rectopexia ventral laparoscópica con malla no absorbible se emparejaron según la edad, el sexo y el tiempo de seguimiento con un número igual de pacientes que usaban sutura de monofilamento absorbible.La medida de resultado primaria fue la erosión sintomática de la malla después de la rectopexia. La medida de resultado secundarias incluyeron otras complicaciones y/o reoperaciones relacionadas con la malla.La tasa de erosión fue del 2% (6/495) en el grupo de sutura no absorbible; 4 erosiones en el recto y 2 en la vagina. No hubo erosión en el grupo con sutura absorbible. Esta diferencia se mantuvo después del emparejamiento: después de una mediana de seguimiento de 6 (12) meses, no hubo erosión en el grupo de sutura absorbible versus 3.3% de erosión (n = 5) en el grupo de sutura no absorbible (p = 0.03).Este estudio estuvo limitado por su diseño retrospectivo.Las complicaciones relacionadas con la malla se reducen utilizando suturas absorbibles en comparación con las suturas no absorbibles cuando se realiza la rectopexia de malla ventral laparoscópica con malla sintética, sin un aumento en los fracasos de rectopexia. Vea el Resumen del Video en http://links.lww.com/DCR/B49.

Outcome of laparoscopic ventral mesh rectopexy for full-thickness external rectal prolapse: a systematic review, meta-analysis, and meta-regression analysis of the predictors for recurrence

BACKGROUND

Laparoscopic ventral mesh rectopexy (LVMR) has proved effective in the treatment of internal and external rectal prolapse. The present meta-analysis aimed to determine the predictive factors of recurrence of full-thickness external rectal prolapse after LVMR.

METHODS

An organized, systematic search of electronic databases including PubMed/Medline, Embase, Scopus, and Cochran library was conducted in adherence to PRISMA guidelines. Studies that reported the outcome of LVMR in patients with full-thickness external rectal prolapse were included according to predefined criteria. A meta-regression analysis and sub-group meta-analyses were performed to recognize the patient and technical factors that were associated with higher recurrence rates.

RESULTS

Seventeen studies comprising 1242 patients of a median age of 60 years were included. The median operation time was 122.3 min. Conversion to open surgery was required in 22 (1.8%) patients. The weighted mean complication rate across the studies was 12.4% (95% CI 8.4-16.4) and the weighted mean rate of recurrence of full-thickness external rectal prolapse was 2.8% (95% CI 1.4-4.3). The median follow-up duration was 23 months. Male gender (SE = 0.018, p = 0.008) and length of the mesh (SE = - 0.007, p = 0.025) were significantly associated with full-thickness recurrence of rectal prolapse. The weighted mean rates of improvement in fecal incontinence and constipation after LVMR were 79.3% and 71%, respectively.

CONCLUSION

LVMR is an effective and safe option in treatment of full-thickness external rectal prolapse with low recurrence and complication rates. Male patients and length of the mesh may potentially have a significant impact on recurrence of rectal prolapse after LVMR.

Transanal total mesorectal excision for rectal cancer: state of the art

Achieving a high-quality total mesorectal excision (TME) resection specimen is a central tenet of curative rectal cancer management. However, operating at the caudal extremity of the pelvis is inherently challenging and a number of patient- and tumour-related factors may increase the risk of obtaining a poor TME specimen and positive resection margins. Transanal TME (TaTME) is an advanced surgical technique developed to overcome the limitations in pelvic exposure and instrumentation of transabdominal surgery. This up-to-date narrative review describes the evolution of TME surgery, the indications for TaTME, current published outcomes, its limitations and future developments.

Comparative Effectiveness of Teaching Obstetrics and Gynaecological Procedural Skills on Patients versus Models: A randomized trial

Objective:

To compare the effectiveness of learning procedural skills on patients versus mannequins and models.

Methods:

Seventy four interns from two consecutive batches at the Department of Obstetrics and Gynaecolgy Unit-I at Jinnah Postgraduate Medical Center Karachi participated in the study between April and September 2014. Five basic skills; taking a cervical (Pap) smear, intrauterine contraceptive device insertion, manual vacuum aspiration, making/ suturing an episiotomy and active management of the third stage of labour were identified. Interns were randomly allocated to two training groups (Group-1 and 2 of thirty eight and thirty six trainees respectively), with Group-I received training on the five procedural skills on models and mannequins for four weeks while Group-II trained on patients initially. After an evaluation at four weeks the groups crossed over with a final evaluation at eight weeks. The evaluation was through identical objective structured assessment of technical skills on models and mannequins for both groups with standard checklists.

Results:

There was no significant difference in skills between the two groups at the four weeks assessment. However at the end of training, Group-1 trainees performed significantly better than Group 2 with higher overall tests scores (86.7 ± 2.7 versus 80.4 ± 4.8, p< 0.001). This difference was more marked in skills of intrauterine contraceptive device insertion, making and suturing an episiotomy and active management of third stage of labour.

Conclusion:

Our findings suggest that simulations using models and mannequins for developing procedural skills can be readily incorporated in training programs with potential benefits for teaching infrequently performed or more difficult procedures. Our data suggest potential benefits of initiation of trainings on simulations and mannequins followed by human subject exposure.

Consensus on structured training curriculum for transanal total mesorectal excision (TaTME)

BACKGROUND

The interest and adoption of transanal total mesorectal excision (TaTME) is growing amongst the colorectal surgical community, but there is no clear guidance on the optimal training framework to ensure safe practice for this novel operation. The aim of this study was to establish a consensus on a detailed structured training curriculum for TaTME.

METHODS

A consensus process to agree on the framework of the TaTME training curriculum was conducted, seeking views of 207 surgeons across 18 different countries, including 52 international experts in the field of TaTME. The process consisted of surveying potential learners of this technique, an international experts workshop and a final expert's consensus to draw an agreement on essential elements of the curriculum.

RESULTS

Appropriate case selection was strongly recommended, and TaTME should be offered to patients with mid and low rectal cancers, but not proximal rectal cancers. Pre-requisites to learn TaTME should include completion of training and accreditation in laparoscopic colorectal surgery, with prior experience in transanal surgery. Ideally, two surgeons should undergo training together in centres with high volume for rectal cancer surgery. Mentorship and multidisciplinary training were the two most important aspects of the curriculum, which should also include online modules and simulated training for purse-string suturing. Mentors should have performed at least 20 TaTME cases and be experienced in laparoscopic training. Reviewing the specimens' quality, clinical outcome data and entering data into a registry were recommended. Assessment should be an integral part of the curriculum using Global Assessment Scales, as formative assessment to promote learning and competency assessment tool as summative assessment.

CONCLUSIONS

A detailed framework for a structured TaTME training curriculum has been proposed. It encompasses various training modalities and assessment, as well as having the potential to provide quality control and future research initiatives for this novel technique.