Learning Curve of Robotic Enhanced-View Extraperitoneal Approach for Ventral Hernia Repairs

Systematic review and meta-analysis on robotic assisted ventral hernia repair: the ROVER review

INTRODUCTION

Robotic surgery for ventral hernia repair (VHR) is gaining attention for its potential advantages over laparoscopic and open techniques. This approach combines the advantages of minimally invasive surgery with the ability to perform technically challenging procedures, often required in open surgery but difficult with conventional laparoscopy. We aim to evaluate the efficacy and safety of robotic VHR compared to other surgical approaches, focusing on postoperative complications, operative time, and costs.

MATERIAL AND METHODS

A systematic review with meta-analysis were conducted, including 67 studies from January 2010 to May 2023 on Robotic VHR compared with other techniques. Primary outcome was 30-days postoperative complications; SSI, SSO, seroma, mortality, recurrence, length of hospital stay, operative time and costs were analysed as secondary outcomes.

RESULTS

Robotic surgery was associated with longer operative times compared to both laparoscopic (MD 64.67 min; p < 0.001) and open repairs (MD 69.69 min; p < 0.001). However, it resulted, compared to open surgery, in fewer SSIs (OR 0.62; p 0.05), mortality (OR 0.44; p 0.04) and shorter hospital stay (MD -3.77 days; p < 0.001). No differences were found in overall complications or length of stay between robotic and laparoscopic approaches but higher costs and longer operative times were reported in robotic VHR.

CONCLUSIONS

Based on the currently available low-quality evidence, robotic VHR appears to offer limited advantages compared to laparoscopic techniques. However, when compared to open approaches, robotic VHR may demonstrate reduced postoperative complications and shorter hospital stays even if an higher rate of seroma formation was retrieved probably related to technical details. Nevertheless, longer operative times and higher costs remain significant limitations. Further high-quality comparative studies are warranted to assess long-term outcomes and cost-effectiveness.

Comparative approach for abdominal wall reconstruction after ventral hernia: open versus minimally invasive surgery

INTRODUCTION

The classic open ventral hernia repair provides excellent results in recurrences. However, wound complications are the Achilles heel for a good overall clinical outcome. Laparoscopic surgery is in general associated with less pain, better esthetic results, faster recovery, and lower incidence of wound complications. Robotic procedures provide increased degrees of freedom, may improve ergonomics, and allow scaling and performance of finer movements deemed difficult through alternate surgical approaches.

PURPOSE

The aim of this study is to compare outcomes between open and minimally invasive approaches, with the primary objective of determining differences in postoperative course and hospitalization.

METHODS

Patients underwent any of the three procedures: open Rives-Stoppa, laparoscopic eTEP or robotic eTEP between June 2020 and January 2024 for the treatment of one or more midline abdominal wall hernias alongside rectus abdominis diástasis. The width diameter of the hernias was between 3 and 10 cm and techniques that did not place the mesh in a retromuscular position or required component separation are excluded.

RESULTS

Robotic surgery had a lower score on the visual analogue scale for pain at discharge (p-value < 0.00). Minimally invasive surgery allows for the placement of larger meshes compared to the open approach (p < 0.05), although the surgical time is longer (p-value < 0.00). There were no statistically significant differences for hospital stay (p-value = 0.46), complications (p-value = 0.52) or recurrence (p-value = 0.70).

CONCLUSION

Minimally invasive surgery allows for the placement of larger meshes compared to the open approach without increasing the morbidity of the procedure or the immediate postoperative pain, despite generally having longer operative times.

Video Review Can Measure Surgical Robotic Skill Development in a Resident Robotic Hernia Curriculum: A Retrospective Cohort Study

Background

Hernia repairs are one of the most common general surgery procedures and an essential part of training for general surgery residents. The widespread incorporation of robotic hernia repairs warrants the development of a procedure-specific robotic curriculum to assist novice surgeons in improving technical skills.

Objective

To evaluate a robotic hernia simulation-based curriculum for general surgery residents using video review.

Methods

Retrospective cohort study of PGY-3 general surgery residents from the University of Chicago from 2019 to 2021. The residents completed inguinal hernia repair (IHR) and ventral hernia repair (VHR) drills as part of a robotic simulation curriculum. The drills were recorded and graded according to the modified objective structured assessment of technical skills (OSATS) and time to completion. The drills were completed by 3 attending surgeons to establish gold-standard benchmarks.

Results

In total, 20 residents started the curriculum, 19 completed all IHR drills and 17 completed all VHR drills. Attending surgeon total OSATS scores and time to completion were significantly better than the trainees on the first attempt (P < 0.05). When comparing 1st to 4th attempt, resident OSATS scores improved significantly for IHR (15.5 vs 23.3; P < 0.001) and VHR (16.8 vs 23.3; P < 0.001). Time also improved over 4 attempts (IHR: 28.5 vs 20.5 minutes; P < 0.001 and VHR: 29.6 vs 21.2 minutes; P < 0.001). Residents achieved attending-level OSATS scores by their fourth attempt for VHR, but not for IHR. Residents did not achieve attending-level times for either hernia drills.

Conclusions

The robotic hernia curriculum improved resident performance on hernia repair drills and was well-received by the residents.

Short-term outcomes of minimally invasive techniques in posterior component separation for ventral hernia repair: a systematic review and meta-analysis

INTRODUCTION

The objective of this study was to perform a systematic review and meta-analysis to summarize various approaches in performing minimally invasive posterior component separation (MIS PCS) and ascertain their safety and short-term outcomes.

METHODS

A systematic literature searches of major databases were conducted according to the Preferred Reporting Items for Systematic Reviews and Meta-Analysis guidelines to identify studies that provided perioperative characteristics and postoperative outcomes of MIS PCS. Primary outcomes for this study were: surgical site events (SSE), surgical site occurrence requiring procedural intervention (SSOPI), and overall complication rates. A random-effect meta-analysis was conducted which allows computation of 95% CIs using simple approximation and incorporates inverse variance method with logit transformation of proportions.

RESULTS

There were 14 studies that enrolled 850 participants that were included. The study identified rate of SSE, SSOPI, and overall rate of complications of all MIS TAR modifications to be 13.4%, 5.7%, and 19%, respectively.

CONCLUSIONS

Our study provides important information on safety and short-term outcomes of MIS PCS. These data can be used as reference when counseling patients, calculating sample size for prospective trials, setting up targets for prospective audit of hernia centers. Standardization of reporting of preoperative characteristics and postoperative outcomes of patients undergoing MIS PCS and strict audit of the procedure through introduction of prospective national and international registries can facilitate improvement of safety of the MIS complex abdominal wall reconstruction, and help in identifying the safest and most cost-effective modification.

Intraoperative complications of robotic-assisted extended totally extraperitoneal (eTEP) ventral hernia retromuscular repairs with mesh: a systematic literature review and narrative synthesis

Minimally invasive extended totally extraperitoneal (eTEP) technique is revolutionising ventral hernia repairs. Robotic-assisted eTEP has been gaining popularity due to better visual clarity and greater dexterity provided by the robotic systems, compared to laparoscopy. Despite growing number of papers being published each year, so far, no study has explored intraoperative complications in robotic-assisted eTEP. The aim was to perform a systematic literature review on the incidence of intraoperative complications in robotic-assisted eTEP ventral hernia repairs. The study protocol was preregistered with PROSPERO, registration number CRD42023450072. Twelve categories of intraoperative complications were defined by the authors. A search of PubMed and Embase was conducted on 16/08/2023, for articles pertaining to robotic-assisted eTEP operations in ventral hernias in adults. Articles were critically appraised and data were extracted using predefined extraction templates. No data were suitable for statistical analysis and a narrative synthesis was performed instead. Ten studies fulfilled the inclusion criteria, of which four studies reported intraoperative complications. Of the 12 categories of intraoperative complications, only 5 were reported. Three studies encountered adherent bowel inside the hernia sac. One reported linea alba injury with subsequent anterior layer dehiscence. There was one case of unrecognised intraoperative retromuscular bleeding and one case of insufflation injury with subcutaneous emphysema. There is a paucity of literature on the incidence of intraoperative complications in robotic-assisted eTEP ventral hernia repairs. Available studies suggest complication rates are low. More robust studies using prospective data from hernia registries are required before further conclusions can be drawn.

Learning curves of robotic extended totally extraperitoneal (eTEP) hernia repair among two surgeons at a high-volume community hospital: a cumulative sum analysis

INTRODUCTION

Robotic extended totally extraperitoneal hernia (eTEP) repair is a novel technique for minimally invasive ventral hernia repair with retromuscular placement of mesh. This study aimed to evaluate the learning curve for robotic eTEP hernia repair using risk-adjusted cumulative sum (RA-CUSUM) analysis for two general surgeons-one with dedicated fellowship training in robotic eTEP technique (surgeon 2) and another without robotic eTEP-specific training (surgeon 1).

METHODS

We conducted a retrospective analysis of 98 patients undergoing robotic eTEP hernia repair from July 2020 to February 2022 for two surgeons. RA-CUSUM method was applied to the overall operative time (OT) in minutes, adjusting for transversus abdominis release (TAR).

RESULTS

Figures 3 (surgeon 1) and 4 (surgeon 2) illustrate the three phases in the RA-CUSUM graphs of OT. For surgeon 1, the cases for each phase were determined: phase 1 (1 to 12), phase 2 (13 to 24), and phase 3 (25 to 51). For surgeon 2, the three phases were similarly determined as 1 to 8, 9 to 32, and 33 to 47, respectively. A significant (p = 0.017) difference existed for the OTs between phases 1 (262 ± 69) and 3 (192 ± 63.0) for surgeon 1. OT compared to the risk-adjusted value stabilized after case 12 and decreased after case 24 for surgeon 1; it began to decrease after case 8 for surgeon 2.

CONCLUSIONS

The initial learning curve for surgeon 1 reached its plateau after 12 cases, shorter than comparable studies. This was likely due to the surgeon's intentional focus on learning this technique through courses, proctoring, and active mentorship. The flat learning curve seen in surgeon 2's series illustrates the value of experience gained during fellowship training. Our data support that, given the right resources and support, a short learning curve for eTEP is attainable for community surgeons without prior training in the technique.