Resident Learning Curve for Laparoscopic Appendectomy According to Seniority

How does the number of training years in pediatric surgery affect appendectomy outcomes?

INTRODUCTION

Appendectomy has traditionally been considered as a training operation for junior pediatric surgeons during their training period. However, with the increase of laparoscopic appendectomy, there has been a growing concern about the performance of this procedure by junior trainees. Our aim is to analyze intra-/postoperative appendectomy outcomes according to the number of training years during Pediatric Surgical residency training program.

METHODS

A retrospective study was performed in patients who underwent appendectomy between 2018 and 2021 in our institution, who were divided into 5 groups according to the number of training years of the junior surgeon who performed the intervention (Y1-Y5). Demographics, complicated appendicitis rate, operation time, and postoperative complications were compared. A stratified analysis according to the technique performed (open/laparoscopic) was performed.

RESULTS

A total of 1274 appendectomized patients were analyzed, of which 1257 (98.7%) were operated on by junior trainees (81 in Y1; 407 in Y2; 337 in Y3; 261 in Y4; and 171 in Y5) without demographic differences between groups. As the year of training increased, an elevation in complicated appendicitis rate was observed, although without statistically significant differences. However, laparoscopic/open appendectomies ratio increased with increasing year of training (p < 0.001). Operative time decreased significantly with increasing year of training (p < 0.001), both in open and laparoscopic appendectomies. There were no significant differences in postoperative complications, nor in the stratified analysis according to surgical technique.

CONCLUSION

Appendectomy performed by junior pediatric surgery trainees can be considered a safe procedure from the first year of training, regardless of the technique used.

Graded operative autonomy in emergency appendectomy mirrors case-complexity: surgical training insights from the SnapAppy prospective observational study

INTRODUCTION

Surgical skill, a summation of acquired wisdom, deliberate practice and experience, has been linked to improved patient outcomes. Graded mentored exposure to pathologies and operative techniques is a cornerstone of surgical training. Appendectomy is one of the first procedures surgical trainees perform independently. We hypothesize that, given the embedded training ethos in surgery, coupled with the steep learning curve required to achieve trainer-recognition of independent competency, 'real-world' clinical outcomes following appendectomy for the treatment of acute appendicitis are operator agnostic. The principle of graded autonomy matches trainees with clinical conditions that they can manage independently, and increased complexity drives attending input or assumption of the technical aspects of care, and therefore, one cannot detect an impact of operator experience on outcomes.

MATERIALS AND METHODS

This study is a subgroup analysis of the SnapAppy international time-bound prospective observational cohort study (ClinicalTrials.gov Trial #NCT04365491), including all consecutive patients aged ≥ 15 who underwent appendectomy for appendicitis during a three-month period in 2020-2021. Patient- and surgeon-specific variables, as well as 90-day postoperative outcomes, were collected. Patients were grouped based on operating surgeon experience (trainee only, trainee with direct attending supervision, attending only). Poisson and quantile regression models were used to (adjusted for patient-associated confounders) assess the relationship between surgical experience and postoperative complications or hospital length of stay (hLOS), respectively, adjusted for patient-associated confounders. The primary outcome of interest was any complications within 90 days.

RESULTS

A total of 4,347 patients from 71 centers in 14 countries were included. Patients operated on by trainees were younger (Median (IQR) 33 [24-46] vs 38 [26-55] years, p < 0.001), had lower ASA classifications (ASA ≥ 3: 6.6% vs 11.6%, p < 0.001) and fewer comorbidities compared to those operated on by attendings. Additionally, trainees operated alone on fewer patients with appendiceal perforation (AAST severity grade ≥ 3: 8.7% vs 15.6%, p < 0.001). Regression analyses revealed no association between operator experience and complications (IRR 1.03 95%CI 0.83-1.28 for trainee vs attending; IRR 1.13 95%CI 0.89-1.42 for supervised trainee vs attending) or hLOS.

CONCLUSION

The linkage of case complexity with operator experience within the context of graduated autonomy is a central tenet of surgical training. Either subconsciously, or by design, patients operated on by trainees were younger, fitter and with earlier stage disease. At least in part, these explain why clinical outcomes following appendectomy do not differ depending on the experience of the operating surgeon.

Training curriculum in minimally invasive emergency digestive surgery: 2022 WSES position paper

BACKGROUND

Minimally invasive surgery (MIS), including laparoscopic and robotic approaches, is widely adopted in elective digestive surgery, but selectively used for surgical emergencies. The present position paper summarizes the available evidence concerning the learning curve to achieve proficiency in emergency MIS and provides five expert opinion statements, which may form the basis for developing standardized curricula and training programs in emergency MIS.

METHODS

This position paper was conducted according to the World Society of Emergency Surgery methodology. A steering committee and an international expert panel were involved in the critical appraisal of the literature and the development of the consensus statements.

RESULTS

Thirteen studies regarding the learning curve in emergency MIS were selected. All but one study considered laparoscopic appendectomy. Only one study reported on emergency robotic surgery. In most of the studies, proficiency was achieved after an average of 30 procedures (range: 20-107) depending on the initial surgeon's experience. High heterogeneity was noted in the way the learning curve was assessed. The experts claim that further studies investigating learning curve processes in emergency MIS are needed. The emergency surgeon curriculum should include a progressive and adequate training based on simulation, supervised clinical practice (proctoring), and surgical fellowships. The results should be evaluated by adopting a credentialing system to ensure quality standards. Surgical proficiency should be maintained with a minimum caseload and constantly evaluated. Moreover, the training process should involve the entire surgical team to facilitate the surgeon's proficiency.

CONCLUSIONS

Limited evidence exists concerning the learning process in laparoscopic and robotic emergency surgery. The proposed statements should be seen as a preliminary guide for the surgical community while stressing the need for further research.

Systematic review and meta-analysis comparing perioperative outcomes of emergency appendectomy performed by trainee vs trained surgeon

BACKGROUND

Appendectomy is a benchmark operation for trainee progression, but this should be weighed against patient safety and perioperative outcomes.

METHODS

Systematic literature review and meta-analysis comparing outcomes of appendectomy performed by trainees versus trained surgeons.

RESULTS

Of 2086 articles screened, 29 studies reporting on 135,358 participants were analyzed. There was no difference in mortality (Odds ratio [OR] 1.08, P = 0.830), overall complications (OR 0.93, P = 0.51), or major complications (OR 0.56, P = 0.16). There was no difference in conversion from laparoscopic to open surgery (OR 0.81, P = 0.12) and in intraoperative blood loss (Mean Difference [MD] 5.58 mL, P = 0.25). Trainees had longer operating time (MD 7.61 min, P < 0.0001). Appendectomy by trainees resulted in shorter duration of hospital stay (MD 0.16 days, P = 0.005) and decreased reoperation rate (OR 0.78, P = 0.05).

CONCLUSIONS

Appendectomy performed by trainees does not compromise patient safety. Due to statistical heterogeneity, further randomized controlled trials, with standardized reported outcomes, are required.

Factors Influencing the Difficulty and Need for External Help during Laparoscopic Appendectomy: Analysis of 485 Procedures from the Resident-1 Multicentre Trial

Purpose: To identify preoperative predictive factors for technically challenging laparoscopic appendectomy (LA) and the need for external help to laparoscopically complete the procedure. Methods: We analysed data from a two-year data lock on the Resident-1 multicentre registry. The operator classified each procedure following a five-grade Likert scale to define technical difficulty. We performed univariate analysis comparing Grade 1−3 versus 4−5 procedures and then built a logistic regression model to identify independent predictors of Grade 4−5 procedures defined as needing external help to complete a LA. Results: 561 patients were recruited from 2019 to 2021, and 485 patients were included in the final analysis due to missing data. A BMI > 30 kg/m2, preoperative CT scan, and the AIR score were independent preoperative predictors of complex LA with the need for external help to be completed. Patients undergoing such procedures were more affected by CA, had longer operative times, and had the worst postoperative outcomes. Conclusion: The preoperative identification of technically demanding LA could be helpful in optimising the preoperative planning, maximise surgeons’ preparedness, and include expert surgeons in the procedure earlier. Creating a scoring system for the technical difficulty of LA is desirable.

Laparoscopic appendicectomy without the use of disposable materials - a low-cost alternative - 1,552 cases operated in 20 years

INTRODUCTION

Laparoscopic appendectomy does not have a single protocol on its technical systematization, access routes, and use of energy and staplers. The cost of disposable materials can prevent its widespread use. Alternatives to decrease cost can help disseminate the laparoscopic access to appendectomy.

OBJECTIVE

to introduce a low-cost laparoscopic appendectomy method with good aesthetic results through the location of incisions; to show its viability through its application in 1,552 cases of laparoscopic appendectomy operated between 2000 and 2019 with three portals and very low-cost regarding materials used.

METHODS

we applied three punctures - an umbilical one for the camera (5 or 10mm in diameter), a 10mm puncture in the right iliac fossa, and one 5mm puncture in the left iliac fossa. The materials used were permanent use trocars, grasping forceps, hook, scissors, and needle holder, without the need for any disposable device.

RESULTS

1.552 patients were operated between 2000 and 2019, 56.2% being female, mean age 32.66 years (9-93), average hospital stay of 1.74 days (1-10), and median of 1.2 days.

CONCLUSION

the technique we describe uses three metallic trocars and four permanent instruments, in addition to a single cotton suture. It is, therefore, a very low-cost laparoscopic procedure. Its application has shown good results and low morbidity, which may become the preferred indication for laparoscopic surgery in the treatment of acute appendicitis.

Clinical outcomes of locking polymeric clip for laparoscopic appendectomy in patients with appendicitis: a retrospective comparison with loop ligature

Purpose

This study aimed to compare the clinical outcomes of laparoscopic appendectomy (LA) according to the method of appendiceal stump closure.

Methods

Patients who underwent LA for appendicitis between 2010 and 2020 were retrospectively reviewed. Patients were classified into locking polymeric clip (LPC) and loop ligature (LL) groups. Clinical outcomes were compared between the groups.

Results

LPC and LL were used in 188 (56.6%) and 144 patients (43.4%), respectively for appendiceal stump closure. No significant differences were observed in sex, age, comorbidities, and the severity of appendicitis between the groups. The median operative time was shorter in the LPC group than in the LL group (64.5 minutes vs. 71.5 minutes, P=0.027). The median hospital stay was longer in the LL group than in the LPC group (4 days vs. 3 days, P=0.020). Postoperative incidences of intraabdominal abscess and ileus were higher in the LL group than in the LPC group (4.2% vs. 1.1%, P=0.082 and 2.8% vs. 0%, P=0.035; respectively). The readmission rate was higher in the LL group than that in the LPC group (6.3% vs. 1.1%, P=0.012).

Conclusion

Using LPC for appendiceal stump closure during LA for appendicitis was associated with lower postoperative complication rate, shorter operative time, and shorter hospital stay compared to the use of LL. Operative time above 60 minutes and the use of LL were identified as independent risk factors for postoperative complications in LA. Therefore, LPC could be considered a more favorable closure method than LL during LA for appendicitis.

Impact of COVID-19 on the care of acute appendicitis: a single-center experience in Korea

Purpose

Coronavirus disease 2019 (COVID-19) affects healthcare systems worldwide; however, few studies have assessed the impact of COVID-19 on emergent surgical diseases. This study aimed to investigate the impact of COVID-19 on the care given to patients with acute appendicitis in Korea.

Methods

Between November 2019 and November 2020, 495 patients underwent laparoscopic surgery for acute appendicitis. The patients were divided into prepandemic and pandemic groups. The baseline characteristics and perioperative outcomes were compared.

Results

The time between admission and surgery was longer in the pandemic group than in the prepandemic group (17.6 hours vs. 9 hours, P < 0.001). The operation time was longer (5.8 minutes, P = 0.014), inflammation was more severe (10%, P = 0.036), and more patients visited the emergency room (82.1% vs. 73.3%, P = 0.025) in the pandemic group than in the prepandemic group. There were no significant differences in postoperative complications or length of hospital stay between the 2 groups. After propensity score matching, the time to surgery was delayed (17.3 hours vs. 9 hours, P < 0.001) and more patients visited the emergency room (84.5% vs. 73.3%, P = 0.020) in the pandemic group.

Conclusion

In the COVID-19 era, the characteristics of patients with acute appendicitis and inflammation worsened. The time to surgery was delayed due to the requirement for preoperative COVID-19 testing and increased the severity of appendicitis did not affect the perioperative outcomes.