Diffusion of Innovation: A 10 Year Review of the Adoption of Robotics in Fellowship Training (preprint)

Background: Robotic assisted surgery has existed for 20 + years but uptake has been slow among general surgery specialties. This study aimed to exam utilization trends in robotic general surgery in the decade prior to the COVID-19 pandemic.Methods: We reviewed 10 years of Fellowship Council case logs from the 2010 academic year to the 2019 academic year. The mean volumes of robotic cases per fellow were compared using ANOVA. We also stratified cases into six index categories (i.e. bariatric, foregut, colorectal, major HPB, inguinal hernia, and ventral hernia) for additional analysis. We also analyzed the stage of adoption of robotic surgery according to the popular diffusion of innovation theory.Results: We analyzed 648,858 cases performed by 2,099 fellows (mean 309 cases/fellow/year). The mean robotic volume grew from 3.6 robotic cases per fellow in 2010 to 49.5 robotic cases per fellow in 2019 (p < 1x10− 33). As a share of all cases performed, robotic surgery within FC fellowships grew from 1.3% of all operations in 2010 to 15.1% of all operations in 2019. Early in the decade, robotic utilization and growth was restricted to innovators and early adopters; however, significant growth in utilization by the early majority started in 2014 and was sustained for the remainder of the decade. Utilization among the late majority began increasing late in the decade but remains low overall.Conclusions: Utilization of robotics in general surgery is growing rapidly across multiple case types and projects to overtake laparoscopy as the dominant approach in Fellowship Council programs by 2024.

The experience with Mini- or Less-open Sublay operation.

INTRODUCTION: The MILOS concept binds the benefit of the sublay mesh augmentation in the way of functional and morphological reconstruction of the abdominal wall without the need to use penetrating fixation elements and with the benefits of minimal surgical access. The transhernial approach is carried out at low cost with standard laparoscopic instruments. MATERIAL AND METHOD: The authors carried out retrospective analysis of the years 2018-2022. Included are all patients operated by the MILOS concept. The patients have suffered of the midline hernias type M according to European Hernia society, eventually combined with rectus diastasis. Authors present their own experience of this new treatment method. The evaluation of complications was performed. RESULT: In the observed time we have operated 61 patients. In the years 2018 and 2019 together 35 patients were treated, none in the year of 2020. Because of the COVID plaque was the 2020 "Year of restrictions". In the year 2021 and first quarter of 2022 we have already cured 26 patients. In this time 2 major complications and 3 minor complications were observed. Since the 2nd quarter of 2022 we have already upgraded to eMILOS. CONCLUSION: Our experience with this new hernia repair shows that this treatment possibility is feasible for general use also in small district departments without the need to use of robotic technology. This skill will be necessary for future F.E.B.S AWS (Tab. 2, Fig. 3, Ref. 15). Text in PDF www.elis.sk Keywords: incisional hernia, epigastric hernia, MILOS, Mini- or Less-open sublay operation, rectus diastasis, sublay mesh, uniport, abdominal wall surgery.

Impact of the COVID-19 Pandemic on Elective and Emergency Surgical Procedures in a University Hospital.

OBJECTIVE: to assess the impact of the COVID-19 pandemic on abdominal wall hernia repair surgeries and cholecystectomy in a referral center hospital. METHODS: a retrospective, observational, cross-sectional study carried out at Hospital Universitário Evangélico Mackenzie (HUEM), in Curitiba, Paraná, Brazil. Data obtained through electronic medical records of patients who underwent cholecystectomy and abdominal wall hernia repair from March to December 2019 and 2020 at HUEM were included. Data were analyzed using Pearsons Chi-Square test and analysis of variance (ANOVA). RESULTS: a total of 743 medical records were analyzed, with a 63.16% drop in the total number of surgeries in 2020. There was a 91.67% increase in the number of ICU admissions in 2020, as well as a 70% increase in average length of stay. A greater number of complications was observed (in 2020, 27% had complications, while in 2019 this figure was 18.8%) and an increase in mortality (in 2019, this rate was 1.3% and in 2020, 6.5%). There were 6 cases of COVID-19 in 2020, so that of these, 5 patients died. CONCLUSION: during the COVID-19 pandemic, an important reduction in the number of abdominal wall hernia repair surgeries and cholecystectomy was observed. In addition, there was a statistically significant increase in postoperative complications, mortality rate and length of stay in 2020.

Impact of the COVID-19 pandemic on hernia surgery in a Swedish healthcare region: a population-based cohort study.

BACKGROUND: Swedish healthcare has been reorganised during the COVID-19 pandemic, affecting the availability of surgery for benign conditions. The aim of this study was to determine the effects of COVID-19 on emergency and elective hernia surgery in a Swedish healthcare region. METHODS: Using procedure codes, data from inguinal and ventral hernia procedures performed at the three hospitals in Jönköping Region, Sweden, from March 1st 2019 to January 31st 2021, were retrieved from a medical database. The cohort was divided into two groups: the COVID-19 group (March 1st 2020-January 31st 2021) and the control group (March 1st 2019-January 31st 2020). Demographic and preoperative data, hernia type, perioperative findings, and type of surgery were analysed. RESULTS: A total 1329 patients underwent hernia surgery during the study period; 579 were operated during the COVID-19 period and 750 during the control period. The number of emergency ventral hernia repairs increased during the COVID-19 period, but no difference in inguinal hernia repair rate was seen. The characteristics of patients that underwent hernia repair were similar in the two groups. Moreover, the decrease in elective ventral hernia repair rate during the COVID-19 period did not result in a higher risk for strangulation. CONCLUSION: There is no evidence to suggest that the decrease in the number of elective ventral hernia repairs during the COVID-19 period had any impact on the risk for strangulation. Indications for surgery in patients with a symptomatic ventral or inguinal hernia should be carefully evaluated. Studies with greater power and longer follow-up are needed to gain a full understanding of the effects of the COVID-19 pandemic on hernia surgery.

Impact of the COVID-19 pandemic on hernia surgery in a Swedish healthcare region: a population-based cohort study (preprint)

Background: Swedish healthcare has been reorganised during the COVID-19 pandemic, affecting the availability of surgery for benign conditions. The aim of this study was to determine the effects of COVID-19 on emergency and elective hernia surgery in a Swedish healthcare region. Methods: Using procedure codes, data from inguinal and ventral hernia procedures performed at the three hospitals in Jönköping Region, Sweden, from March 1 st 2019 to January 31 st 2021, were retrieved from a medical database. The cohort was divided into two groups: the COVID-19 group (March 1 st 2020 - January 31 st 2021) and the control group (March 1 st 2019 - January 31 st 2020). Demographic and preoperative data, hernia type, perioperative findings, and type of surgery were analysed. Results: A total 1329 patients underwent hernia surgery during the study period; 579 were operated during the COVID-19 period and 750 during the control period. The number of emergency ventral hernia repairs increased during the COVID-19 period, but no difference in inguinal hernia repair rate was seen. The characteristics of patients that underwent hernia repair were similar in the two groups. Moreover, the decrease in elective ventral hernia repair rate during the COVID-19 period did not result in a higher risk for strangulation. Conclusion: There is no evidence to suggest that the decrease in the number of elective ventral hernia repairs during the COVID-19 period had any impact on the risk for strangulation. Indications for surgery in patients with a symptomatic ventral or inguinal hernia should be carefully evaluated. Studies with greater power and longer follow-up are needed to gain a full understanding of the effects of the COVID-19 pandemic on hernia surgery.

Enhanced-view totally extraperitoneal (eTEP) approach for the treatment of abdominal wall hernias: mid-term results.

INTRODUCTION: Multiple minimally invasive techniques have been described for ventral hernia repair. The recently described enhanced view totally extraperitoneal (eTEP) ventral hernia repair seems an appealing option since it allows to address midline and lateral hernias, placing the mesh in the retromuscular position without the use of traumatic fixation. AIM: To report on the mid-term result of a series of patients with ventral hernias repaired by the eTEP approach. METHODS: A retrospective analysis of our case series between June 2017 and December 2019. Demographic and clinical data were gathered. Hernia characteristics, surgical details, hernia recurrences, and complications are reported. RESULTS: 66 patients were included in the study. Median follow-up was 22 months (interquartile range 12-26). 60% of patients were male. Mean age, BMI, % of Type-2 diabetes and % of smoking were 59 ± 12 years, 30 kg/m2, 24% and 23%, respectively. Mean hernia defect size was 5.5 ± 2.9 cm. Forty-three eTEP Rives-stoppa and 23 eTEP-Transversus abdominis release (14 unilateral, 9 bilateral) were performed. 22 inguinal hernias and 15 lateral defects were simultaneously repaired. We report 1 recurrence (1.5%) and 10 surgical site occurrences (15%; 6 seromas, 2 hematomas and 2 surgical site infections). Four patients required reinterventions (6%). CONCLUSION: eTEP is a promising approach to treat midline hernias and allows the simultaneous treatment of lateral and inguinal defects, keeping the mesh in the retromuscular position. However, comparative studies must be performed to know its real benefit in laparoscopic ventral hernia repair.

Robotic Colostomy Takedown in a Patient with Extensive Ventral Hernias and Adhesive Disease.

STUDY OBJECTIVE: To demonstrate a surgical video wherein a robot-assisted colostomy takedown was performed with anastomosis of the descending colon to the rectum after reduction of ventral hernias and extensive lysis of adhesions. DESIGN: Case report and a step-by-step video demonstration of a robot-assisted colostomy takedown and end-to-side anastomosis. SETTING: Tertiary referral center in New Haven, Connecticut. A 64-year-old female was diagnosed with stage IIIA endometrioid endometrial adenocarcinoma in 2015 when she underwent an optimal cytoreductive surgery. In addition, she required resection of the sigmoid colon and a descending end colostomy with Hartmann's pouch, mainly secondary to extensive diverticulitis. After adjuvant chemoradiation, she remained disease free and desired colostomy reversal. Body mass index at the time was 32 kg/m2. Computed tomography of her abdomen and pelvis did not show any evidence of recurrence but was notable for a large ventral hernia and a parastomal hernia. She then underwent a colonoscopy, which was negative for any pathologic condition, except for some narrowing of the distal rectum above the level of the levator ani. INTERVENTIONS: Enterolysis was extensive and took approximately 2 hours. The splenic flexure of the colon had to be mobilized to provide an adequate proximal limb to the anastomosis site. An anvil was then introduced into the distal descending colon through the colostomy site. A robotic stapler was used to seal the colostomy site and detach it from the anterior abdominal wall. Unfortunately, the 28-mm EEA sizer (Covidien, Dublin, Ireland) perforated through the distal rectum, caudal to the stricture site. A substantial length of the distal rectum had to be sacrificed secondary to the perforation, which mandated further mobilization of the splenic flexure. The rectum was then reapproximated with a 3-0 barbed suture in 2 layers. This provided us with approximately 6- to 8-cm distal rectum. An end-to-side anastomosis of the descending colon to the distal rectum was performed. Anastomotic integrity was confirmed using the bubble test. Because of the lower colorectal anastomosis, a protective diverting loop ileostomy was performed. The patient had an uneventful postoperative course. A hypaque enema performed 3 months after the colostomy takedown showed no evidence of anastomotic leak or stricture. The ileostomy was then reversed without any complications. CONCLUSION: Robot-assisted colostomy takedown and anastomosis of the descending colon to rectum were successfully performed. Although there is a paucity of literature examining this technique within gynecologic surgery, the literature on general surgery has supported laparoscopic Hartmann's reversal and has demonstrated improved rates of postoperative complications and incisional hernia and reduced duration of hospitalization [1]. Minimally invasive technique is a feasible alternative to laparotomy for gynecologic oncology patients who undergo colostomy, as long as the patients are recurrence free.

The effects of COVID-19 pandemic on emergency anterior abdominal wall hernia surgery: is it safe to postpone elective hernia surgery in the pandemic?

BACKGROUND: The aim of this study was to investigate the effects of the COVID-19 pandemic on emergency anterior abdominal wall hernia surgeries (EAAWHS) by comparing the pandemic period with the control period a year ago and to share our experiences in the pandemic period. METHODS: This single-center retrospective cohort study included all patients who underwent EAAWHS during the pandemic (from 11 March 2020 to 25 January 2021) and control period (1 year before the same period, from 11 March 2019 to 25 January 2020). Demographic data, preoperative clinical and pathological parameters, intraoperative findings and postoperative complications secondary to operation and COVID-19 infection, length of intensive care and hospital stay of patients were recorded, and the pandemic and control groups were compared. RESULTS: Of the 87 patients who underwent anterior abdominal wall hernia surgery during the COVID-19 pandemic, 41 (47.1%) were operated emergently and 46 (52.9%) were operated electively. Of the 485 patients who underwent anterior abdominal wall hernia surgery during the control period, 24 (4.95%) were operated emergently and 461 (95.05%) were operated electively. The decrease in the number of elective operations and the increase in the number of emergency operations were significant during the pandemic (p < 0.001).There was a decrease in the number of emergency inguinal hernia operations and an increase in the number of emergency ventral (incisional, umbilical) hernia operations during the pandemic period compared to the control period (p < 0.05).The mortality rates were similar (8.3 vs. 9.8%, p > 0.05) in both periods. CONCLUSION: Despite the increase in the number of EAAWHS during the COVID-19 pandemic, there was no significant difference in mortality and morbidity rates. EAAWHS can be performed safely during the pandemic by taken necessary and adequate precautions.

Mesh hernioplasty in emergency repair of traumatic abdominal wall hernia following bull horn injury.

Traumatic abdominal wall hernia (TAWH) is uncommon, mostly following motor vehicle accidents, fall from height and bullfighting. Bullhorn injury, common in rural areas, presents as either penetrating injuries to the abdomen or blunt injuries leading to internal organs injury. Rarely the bull horn injury may lead to TAWH. We report a 70-year-old female from a rural area who suffered bull horn injury to the abdomen leading to TAWH without penetrating the horn and was managed in the emergency by an open mesh hernioplasty. We suture closed the 10×5 cm size defect and reinforced it with a polypropylene mesh of 15×15 cm in the emergency setting. The patient recovered well without any complications or recurrence and doing well at 1 year of follow-up. Mesh hernioplasty can be considered a feasible and safe option in the emergency repair of traumatic abdominal hernia following bull horn injury.

Do surgical emergencies stay at home? Observations from the first United States Coronavirus epicenter.

BACKGROUND: During the coronavirus disease 2019 pandemic, New York instituted a statewide stay-at-home mandate to lower viral transmission. While public health guidelines advised continued provision of timely care for patients, disruption of safety-net health care and public fear have been proposed to be related to indirect deaths because of delays in presentation. We hypothesized that admissions for emergency general surgery (EGS) diagnoses would decrease during the pandemic and that mortality for these patients would increase. METHODS: A multicenter observational study comparing EGS admissions from January to May 2020 to 2018 and 2019 across 11 NYC hospitals in the largest public health care system in the United States was performed. Emergency general surgery diagnoses were defined using International Classification Diseases, Tenth Revision, codes and grouped into seven common diagnosis categories: appendicitis, cholecystitis, small/large bowel, peptic ulcer disease, groin hernia, ventral hernia, and necrotizing soft tissue infection. Baseline demographics were compared including age, race/ethnicity, and payor status. Outcomes included coronavirus disease (COVID) status and mortality. RESULTS: A total of 1,376 patients were admitted for EGS diagnoses from January to May 2020, a decrease compared with both 2018 (1,789) and 2019 (1,668) (p < 0.0001). This drop was most notable after the stay-at-home mandate (March 22, 2020; week 12). From March to May 2020, 3.3%, 19.2%, and 6.0% of EGS admissions were incidentally COVID positive, respectively. Mortality increased in March to May 2020 compared with 2019 (2.2% vs. 0.7%); this difference was statistically significant between April 2020 and April 2019 (4.1% vs. 0.9%, p = 0.045). CONCLUSION: Supporting our hypothesis, the coronavirus disease 2019 pandemic and subsequent stay-at-home mandate resulted in decreased EGS admissions between March and May 2020 compared with prior years. During this time, there was also a statistically significant increase in mortality, which peaked at the height of COVID infection rates in our population. LEVEL OF EVIDENCE: Epidemiological, level IV.