No difference between using short and long intervals for distributed proficiency-based laparoscopy simulator training: a randomized trial.

BACKGROUND: Simulation-based training is increasingly used to acquire basic laparoscopic skills. Multiple factors can influence training, e.g., distributed practice is superior to massed practice in terms of efficiency. However, the optimal interval between training sessions is unclear. The objective of this trial was to investigate if shorter intervals between sessions are more efficient than longer intervals during proficiency-based laparoscopy simulator training. METHODS: A randomized simulation-based trial where medical students (n = 39) were randomized to proficiency-based training with either 1-2 days (intervention group) or 6-8 days (control group) between training sessions. Both groups practiced a series of basic tasks and a procedural module until proficiency level on the LapSim® simulator. Both groups were given instructor feedback upon request. After reaching proficiency, participants were invited back for a retention test 3-5 weeks later and practiced the same tasks to proficiency again. RESULTS: The mean time to reach proficiency during training was 291 (SD 89) and 299 (SD 89) min in the intervention and control group, respectively (p = 0.81). During the retention test, the mean time to reach proficiency was 94 (SD 53) and 96 (SD 39) minutes in the intervention and control groups, respectively (p = 0.91). CONCLUSION: We found no difference whether practicing with shorter intervals or longer intervals between training sessions when examining time to proficiency or retention.

Synchronic development of hydrocele and groin hernia during pregnancy: a case report.

INTRODUCTION: Hydroceles of the canal of Nuck are rare, and have not been described in relation to pregnancy. CASE PRESENTATION: A 34-year-old Caucasian female patient had bilateral groin swelling debuted during her pregnancy. A preoperative magnetic resonance imaging scan found bilateral hydroceles of the canal of Nuck. Operative findings and histological examinations revealed a left-sided inguinal hernia and a right-sided hydrocele. The patient was discharged well and without signs of postoperative complications or hernia recurrence. DISCUSSION: In this case, a hydrocele and a hernia sac were morphologically identical in terms of preoperative appearance and development. Given the morphological correlation, it was surprising to find different operative findings confirmed by the histopathological examination. CONCLUSION: This is the first ever report of the synchronic development of two morphologically identical cystic processes, with one being a hydrocele and the other a hernia sac. In addition, the hydrocele developed during pregnancy, making this case even more unique.

Comparing Simulator Metrics and Rater Assessment of Laparoscopic Suturing Skills.

BACKGROUND: Laparoscopic intracorporeal suturing is important to master and competence should be ensured using an optimal method in a simulated environment before proceeding to real operations. The objectives of this study were to gather validity evidence for two tools for assessing laparoscopic intracorporeal knot tying and compare the rater-based assessment of laparoscopic intracorporeal suturing with the assessment based on simulator metrics. METHODS: Twenty-eight novices and 19 experienced surgeons performed four laparoscopic sutures on a Simball Box simulator twice. Two surgeons used the Intracorporeal Suturing Assessment Tool (ISAT) for blinded video rating. RESULTS: Composite Simulator Score (CSS) had higher test-retest reliability than the ISAT. The correlation between the number performed procedures including suturing and ISAT score was 0.51, p<0.001, and 0.59 p<0.001 for CSS. We found an inter-rater reliability (0.72, p<0.001 for test 1 and 0.53 p<0.001 for test 2). The pass/fail rates for ISAT and CSS were similar. CONCLUSION: CSS and ISAT provide similar results for assessing laparoscopic suturing but assess different aspects of performance. Using simulator metrics and raters' assessments in combination should be considered for a more comprehensive evaluation of laparoscopic knot-tying competency.

Haptic simulators accelerate laparoscopic simulator training, but skills are not transferable to a non-haptic simulator: a randomized trial.

BACKGROUND: Laparoscopy requires specific psychomotor skills and can be challenging to learn. Most proficiency-based laparoscopic training programs have used non-haptic virtual reality simulators; however, haptic simulators can provide the tactile sensations that the surgeon would experience in the operating room. The objective was to investigate the effect of adding haptic simulators to a proficiency-based laparoscopy training program. METHODS: A randomized controlled trial was designed where residents (n = 36) were randomized to proficiency-based laparoscopic simulator training using haptic or non-haptic simulators. Subsequently, participants from the haptic group completed a follow-up test, where they had to reach proficiency again using the non-haptic simulator. Participants from the non-haptic group returned to train until reaching proficiency again using the non-haptic simulator. RESULTS: Mean completion times during the intervention were 120 min (SD 38.7 min) and 183 min (SD 66.3 min) for the haptic group and the non-haptic group, respectively (p = 0.001). The mean times to proficiency during the follow-up test were 107 min (SD 41.0 min) and 58 min (SD 23.7 min) for the haptic and the non-haptic group, respectively (p < 0.001). The haptic group was not faster to reach proficiency in the follow-up test than during the intervention (p = 0.22). In contrast, the non-haptic group reached the required proficiency level significantly faster in the follow-up test (p < 0.001). CONCLUSION: Haptic virtual reality simulators reduce the time to reach proficiency compared to non-haptic simulators. However, the acquired skills are not transferable to the conventional non-haptic setting.

A Simplified clinical algorithm for standardized surgical treatment of chronic pain after inguinal hernia repair: A quality assessment study.

BACKGROUNDS: The optimal surgical strategy for the treatment of chronic pain after inguinal hernia repair is controversial and based on relatively weak evidence. The purpose of this study was to analyze pain-related functional impairment using a simplified clinical treatment algorithm for a standardized surgical treatment. The algorithm was predefined, and the indication to operate was based on strict criteria. METHODS: This was a prospective, non-controlled, explorative study. The pain operation was either open triple neurectomy with total mesh removal or laparoscopic retroperitoneal triple neurectomy. A clinically relevant postoperative change was defined as ⩾25% change from the baseline level. Primary outcome was pain-related impairment of physical function using the Activity Assessment Scale. Secondary outcomes included Individual Patient-Reported Outcome Measures, Hospital Anxiety and Depression Scale, and PainDETECT Questionnaire. RESULTS: A total of 240 patients were referred (2016-2019). Sixty-six patients were included for the analysis. A total of 25% of referred patients were offered a pain operation. Follow-up was a median 3 months (range: 3-13). Activity Assessment Scale scores were clinically relevant improved in 43 patients (68%), not clinically relevant different in 19 (30%), and clinically relevant worsened in one (2%). Secondary outcome scores were all significantly improved (P < 0.05) except for the risk of postoperative depression (P = 0.092). Fifty-one patients (77%) reported that chronic groin pain was reduced after the operation. CONCLUSIONS: Pain-related functional impairment was improved with clinical relevance in roughly 70% of patients through a simplified clinical algorithm for surgical treatment of severe chronic pain after an inguinal hernia repair.

Development and evaluation of an endoscopic surgery course for medical students.

INTRODUCTION: Surgical training has changed with the introduction of endoscopic surgery. However, a gap in undergraduate medical training has become evident regarding theoretical principles of and basic skills training in endoscopic surgery. The objective of this study was to develop and evaluate a course in endoscopic surgery for medical students. METHODS: Kern's six-step approach in curriculum development was used. A course including interactive, faculty-led didactic sessions (14 hours, distributed over three days) and simulation-based basic skills training in endoscopic surgery (nine hours, distributed over four sessions) was developed. Knowledge was tested using a 35-item test before and after the course, and finally the course was evaluated electronically. The project group in cooperation with the faculty -developed the goals and objectives, the test and the evaluation questionnaire. RESULTS: The test-scores significantly improved after the course, p < 0.0001, with a mean difference of 12.95 (95% confidence interval: 11.47-14.44). A total of 74% (14/19) responded that the course increased their interest in a career in a surgical specialty and 58% (11/19) were considering specialising in a surgical specialty. CONCLUSIONS: A course in endoscopic surgery was developed based on Kern's six-step approach. The course was positively perceived by the students in terms of contents as well as structure and relevance. FUNDING: University of Copenhagen, Aase og Ejner Danielsen Fonden, The Juliane Marie Centre for Children, Women and Reproduction, Rigshospitalet. TRIAL REGISTRATION: not relevant.

Simulation-based camera navigation training in laparoscopy-a randomized trial.

BACKGROUND: Inexperienced operating assistants are often tasked with the important role of handling camera navigation during laparoscopic surgery. Incorrect handling can lead to poor visualization, increased operating time, and frustration for the operating surgeon-all of which can compromise patient safety. The objectives of this trial were to examine how to train laparoscopic camera navigation and to explore the transfer of skills to the operating room. MATERIALS AND METHODS: A randomized, single-center superiority trial with three groups: The first group practiced simulation-based camera navigation tasks (camera group), the second group practiced performing a simulation-based cholecystectomy (procedure group), and the third group received no training (control group). Participants were surgical novices without prior laparoscopic experience. The primary outcome was assessment of camera navigation skills during a laparoscopic cholecystectomy. The secondary outcome was technical skills after training, using a previously developed model for testing camera navigational skills. The exploratory outcome measured participants' motivation toward the task as an operating assistant. RESULTS: Thirty-six participants were randomized. No significant difference was found in the primary outcome between the three groups (p = 0.279). The secondary outcome showed no significant difference between the interventions groups, total time 167 s (95% CI, 118-217) and 194 s (95% CI, 152-236) for the camera group and the procedure group, respectively (p = 0.369). Both interventions groups were significantly faster than the control group, 307 s (95% CI, 202-412), p = 0.018 and p = 0.045, respectively. On the exploratory outcome, the control group for two dimensions, interest/enjoyment (p = 0.030) and perceived choice (p = 0.033), had a higher score. CONCLUSIONS: Simulation-based training improves the technical skills required for camera navigation, regardless of practicing camera navigation or the procedure itself. Transfer to the clinical setting could, however, not be demonstrated. The control group demonstrated higher interest/enjoyment and perceived choice than the camera group.

[Splenic torsion as cause of acute abdomen in children]. / Milttorsion kan være årsag til akut abdomen hos børn.

A six-year-old boy was admitted with symptoms consistent with acute appendicitis. Immediately before placement of the first trocar, a large abdominal mass was observed which on imaging was identified as a torsioned spleen. Due to suboptimal reperfusion and risk of reperfusion-mediated morbidity a splenectomy was performed. The recovery was uneventful. The child had a twin brother who on a routine ultrasound examination was found to have a normally positioned spleen. Challenges in diagnosis and treatment of children with splenic torsion is discussed.