scholarly journals Must Clinics Replace 2D by 3D Environments for an Efficient Training of Laparoscopic Novices? A Critical Analysis of the Learning Curve for Basic Skills

2022 ◽  
Vol 8 ◽  
Author(s):  
Maik Sahm ◽  
Clara Danzer ◽  
Alexis Leonhard Grimm ◽  
Christian Herrmann ◽  
Rene Mantke
Keyword(s):  
Laparoscopic Surgery ◽  
Learning Curve ◽  
Repeated Measures ◽  
Linear Mixed Model ◽  
Standardized Test ◽  
Operation Time ◽  
Error Rates ◽  
Learning Curves ◽  
Significant Difference ◽  
2D And 3D

Background and AimsPublished studies repeatedly demonstrate an advantage of three-dimensional (3D) laparoscopic surgery over two-dimensional (2D) systems but with quite heterogeneous results. This raises the question whether clinics must replace 2D technologies to ensure effective training of future surgeons.MethodsWe recruited 45 students with no experience in laparoscopic surgery and comparable characteristics in terms of vision and frequency of video game usage. The students were randomly allocated to 3D (n = 23) or 2D (n = 22) groups and performed 10 runs of a laparoscopic “peg transfer” task in the Luebeck Toolbox. A repeated-measures ANOVA for operation times and a generalized linear mixed model for error rates were calculated. The main effects of laparoscopic condition and run, as well as the interaction term between the two, were examined.ResultsNo statistically significant differences in operation times and error rates were observed between 2D and 3D groups (p = 0.10 and p = 0.72, respectively). The learning curve showed a significant reduction in operation time and error rates (both p's < 0.001). No significant interactions between group and run were detected (operation time: p = 0.342, error rates: p = 0.83). With respect to both endpoints studied, the learning curves reached their plateau at the 7th run.ConclusionThe result of our study with laparoscopic novices revealed no significant difference between 2D and 3D technology with respect to performance time and the error rate in a simple standardized test. In the future, surgeons may thus still be trained in both techniques.

scholarly journals Learning Curve for Laparoscopic Repair of Pediatric Inguinal Hernia Using Percutaneous Internal Ring Suturing

Children ◽  
2021 ◽  
Vol 8 (4) ◽  
pp. 294
Author(s):  
Zenon Pogorelić ◽  
Dario Huskić ◽  
Tin Čohadžić ◽  
Miro Jukić ◽  
Tomislav Šušnjar
Keyword(s):  
Inguinal Hernia ◽  
Laparoscopic Surgery ◽  
Postoperative Complications ◽  
Hernia Repair ◽  
Learning Curve ◽  
Operative Time ◽  
Learning Curves ◽  
The Other ◽  
Internal Ring ◽  
Significant Difference

Background: Percutaneous internal ring suturing (PIRS) is a simple and popular technique for the treatment of inguinal hernia in children. The aim of this study was to analyze the learning curves during implementation of PIRS in our department. Methods: A total of 318 pediatric patients underwent hernia repair using the PIRS technique by three pediatric surgeons with different levels of experience in laparoscopic surgery. These patients were enrolled in a prospective cohort study during the period October 2015–January 2021. Surgical times, intraoperative and postoperative complications, in addition to outcomes of treatment were compared among the pediatric surgeons. Results: Regarding operative time a significant difference among the surgeons was found. Operative time significantly decreased after 25–30 procedures per surgeon. The surgeon with advanced experience in laparoscopic surgery had significantly less operative times for both unilateral (12 (interquartile range, IQR 10.5, 16.5) min vs. 21 (IQR 16.5, 28) min and 25 (IQR 21.5, 30) min; p = 0.002) and bilateral (19 (IQR 14, 21) min vs. 28 (IQR 25, 33) min and 31 (IQR 24, 36) min; p = 0.0001) hernia repair, compared to the other two surgeons. Perioperative complications, conversion, and ipsilateral recurrence rates were higher at the beginning, reaching the benchmarks when each surgeon performed at least 30 PIRS procedures. The most experienced surgeon had the lowest number of complications (1.4%) and needed a fewer number of cases to reach the plateau. The other two surgeons with less experience in laparoscopic surgery had higher rates of complications (4.4% and 5.4%) and needed a higher number of cases to reach the plateau (p = 0.190). Conclusions: A PIRS learning curve for perioperative and postoperative complications, recurrences, and conversion rates reached the plateau after each surgeon had performed at least 30 cases. After that number of cases PIRS is a safe and effective approach for pediatric hernia repair. A surgeon with an advanced level of experience in pediatric laparoscopic surgery adopted the technique more easily and had a significantly faster learning curve.

scholarly journals A learning curve in using organ retractor for single-incision laparoscopic right colectomy

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Toshio Shiraishi ◽  
Tetsuro Tominaga ◽  
Takashi Nonaka ◽  
Kiyoaki Hamada ◽  
Masato Araki ◽  
...  
Keyword(s):  
Colon Cancer ◽  
Laparoscopic Surgery ◽  
Blood Loss ◽  
Learning Curve ◽  
Single Incision ◽  
Operation Time ◽  
Perioperative Outcomes ◽  
Single Incision Laparoscopic Surgery ◽  
Right Colon ◽  
Right Colon Cancer

AbstractSingle-incision laparoscopic surgery (SILS) has the potential to improve perioperative outcomes, including less postoperative pain, shorter operation time, less blood loss, and shorter hospital stay. However, SILS is technically difficult and needs a longer learning curve. Between April 2016 and September 2019, a total of 198 patients with clinical stage I/II right colon cancer underwent curative resection. In the case of the SILS approach, an organ retractor was usually used to overcome SILS-specific restrictions. The patients were divided into two groups by surgical approach: the SILS with organ retractor group (SILS-O, n = 33) and the conventional laparoscopic surgery group (LAC, n = 165). Clinical T status was significantly higher in the LAC group (p = 0.016). Operation time was shorter and blood loss was lower in the SILS-O group compared to the LAC group (117 vs. 197 min, p = 0.027; 10 vs. 25 mL, p = 0.024, respectively). In the SILS-O group, surgical outcomes including operation time, blood loss, number of retrieved lymph nodes, and postoperative complications were not significantly different between those performed by experts and by non-experts. Longer operation time (p = 0.041) was significantly associated with complications on univariate and multivariate analyses (odds ratio 2.514, 95%CI 1.047–6.035, p = 0.039). SILS-O was safe and feasible for right colon cancer. There is a potential to shorten the learning curve of SILS using an organ retractor.

Single-Incision Laparoscopic Cholecystectomy: A Combined Analysis of Resident and Attending Learning Curves at a Single Institution

2012 ◽  
Vol 78 (1) ◽  
pp. 119-124
Author(s):  
Mark Joseph ◽  
Michael Phillips ◽  
Christopher C. Rupp
Keyword(s):  
Laparoscopic Cholecystectomy ◽  
Learning Curve ◽  
Single Incision ◽  
Learning Curves ◽  
Patient Specific ◽  
Short Learning Curve ◽  
Significant Difference ◽  
Surgeon Experience ◽  
Standard Laparoscopic Cholecystectomy ◽  
Single Incision Laparoscopic Cholecystectomy

Single-incision laparoscopic cholecystectomy (SILC) is a recent technical modification on standard laparoscopic cholecystectomy that has been shown to be safe and feasible. Recent studies suggest that experienced laparoscopic surgeons have a short learning curve to become proficient in SILC. However, little is known about the interaction of the learning curves of residents and attending surgeons at academic programs. We prospectively evaluated various metrics of both attending and resident surgeons as they progressed in their experience with SILC. Patients were placed into cohorts of 25 based on teaching surgeon experience. Data recorded included patient-specific and operative variables along with complications, conversion to standard laparoscopic cholecystectomy, and outcomes. One hundred one patients underwent SILC. Twelve per cent of patients required conversion to standard laparoscopic cholecystectomy. No significant difference was found in operative times compared within the experience-based cohorts ( P = 0.21). A reduction in operative time was shown in residents who were proficient in standard laparoscopic cholecystectomy (SLC) along their learning curve. Operative times remained the same for the teaching surgeon regardless of experience of resident surgeon. SILC has a short learning curve for resident surgeons who are proficient in standard laparoscopic surgery. SILC can be effectively taught with few complications and outcomes similar to SLC with preservation of operative efficiency and safety. Further studies are warranted, however, at a national/international level to define the place and use for SILC as well as the incorporation of single-incision techniques into resident curriculum.

Investigating the learning curve in endoscopic compared to microscopic myringotomy and ventilation tube insertion

2020 ◽  
Vol 134 (6) ◽  
pp. 497-500
Author(s):  
O Denton ◽  
A Daglish ◽  
L Smallman ◽  
S Fishpool
Keyword(s):  
Learning Curve ◽  
Learning Curves ◽  
Learning Rate ◽  
Middle Ear Surgery ◽  
Ventilation Tube ◽  
Ear Surgery ◽  
Steep Learning Curve ◽  
Learning Rates ◽  
Significant Difference ◽  
Rate Of Learning

AbstractObjectiveRate of learning is often cited as a deterrent in the use of endoscopic ear surgery. This study investigated the learning curves of novice surgeons performing simulated ear surgery using either an endoscope or a microscope.MethodsA prospective multi-site clinical research study was conducted. Seventy-two medical students were randomly allocated to the endoscope or microscope group, and performed 10 myringotomy and ventilation tube insertions. Trial times were used to produce learning curves. From these, slope (learning rate) and asymptote (optimal proficiency) were ascertained.ResultsThere was no significant difference between the learning curves (p = 0.41). The learning rate value was 68.62 for the microscope group and 78.71 for the endoscope group. The optimal proficiency (seconds) was 32.83 for the microscope group and 27.87 for the endoscope group.ConclusionThe absence of a significant difference shows that the learning rates of each technique are statistically indistinguishable. This suggests that surgeons are not justified when citing ‘steep learning curve’ in arguments against the use of endoscopes in middle-ear surgery.

Pairwise Multiple Comparisons in Repeated Measures Designs

1980 ◽  
Vol 5 (3) ◽  
pp. 269-287 ◽  
Author(s):  
Scott E. Maxwell
Keyword(s):  
Repeated Measures ◽  
Mixed Model ◽  
Multiple Comparisons ◽  
Error Rates ◽  
Type I ◽  
Omnibus Test ◽  
Mixed Model Approach ◽  
Significant Difference ◽  
Repeated Measures Designs ◽  
Necessary And Sufficient

Five methods of performing pairwise multiple comparisons in repeated measures designs were investigated. Tukey's Wholly Significant Difference (WSD) test, recommended by most experimental design texts, requires that all differences between pairs of means have a common variance. However, this assumption is equivalent to the sphericity condition that is necessary and sufficient for the validity of the mixed-model approach to the omnibus test. Monte Carlo methods revealed that Tukey's WSD leads to an inflated alpha level when the sphericity assumption is not met. Consideration of both Type I and Type II error rates found in the simulated conditions for the five procedures suggests that a Bonferroni method utilizing a separate error term for each comparison should be employed.

Effects of Exercise Restriction on Patients With Anomalous Aortic Origin of a Coronary Artery

2016 ◽  
Vol 8 (1) ◽  
pp. 18-24 ◽  
Author(s):  
Matthew D. Elias ◽  
James Meza ◽  
Brian W. McCrindle ◽  
Julie A. Brothers ◽  
Stephen Paridon ◽  
...  
Keyword(s):  
Coronary Artery ◽  
Exercise Capacity ◽  
Repeated Measures ◽  
Mixed Model ◽  
Linear Mixed Model ◽  
Multivariable Analysis ◽  
Young Patients ◽  
Significant Difference ◽  
Exercise Restriction ◽  
Over Time

Background: Management of young patients with anomalous aortic origin of a coronary artery (AAOCA) may involve exercise restriction. We sought to identify the association of exercise restriction with changes over time in body mass index (BMI) and exercise capacity in this cohort. Methods: We performed a retrospective review of patients with AAOCA seen at The Children’s Hospital of Philadelphia between January 1, 1998, and August 31, 2014. Linear mixed model repeated-measures analysis assessed changes in BMI and exercise capacity. Results: We included 72 patients with a median age at presentation of 12.6 years (interquartile range: 10.1-15.8) and mean follow-up of 3.6 ± 3.0 years. The majority had an anomalous right coronary artery (71%) and interarterial ± intramural coronary course (90%). Surgery was performed in 54%, more often in those with interarterial/intramural course ( P < .001) and symptoms ( P = .003). Most patients (82%) were exercise-restricted on presentation, and restricted patients were older than those who were not restricted ( P = .01). There was no significant difference between restricted and nonrestricted patients in initial BMI z scores, percentage of patients with BMI over 85th percentile (26%) or exercise capacity variables. In univariable analysis, exercise restriction over time was not associated with change in BMI z score ( P = .25) or change in exercise variables. Restriction was not associated with significant change in these variables in multivariable analysis. Conclusions: Although further investigation is warranted to determine the degree of adherence to exercise restriction, the recommendation of restriction alone is not associated with increasing BMI or decreasing exercise performance in the short-term.

scholarly journals Learning curve of trans-sacral epiduroscopic laser decompression in herniated lumbar disc disease

2020 ◽  
Author(s):  
Seong Son ◽  
Chan Jong Yoo ◽  
Byung Rhae Yoo ◽  
Woo Seok Kim ◽  
Tae Seok Jeong
Keyword(s):  
Clinical Outcome ◽  
Minimally Invasive ◽  
Learning Curve ◽  
Lumbar Disc Herniation ◽  
Disc Herniation ◽  
Lumbar Disc ◽  
Operation Time ◽  
Early Group ◽  
Significant Difference ◽  
Late Group

Abstract Background: Trans-sacral epiduroscopic laser decompression (SELD) using slender epiduroscope and a holmium YAG laser is one of the minimally invasive surgical options for lumbar disc herniation. However, the learning curve of SELD and the effect of surgical proficiency on clinical outcome have not yet been established. We investigated patients with lumbar disc herniation undergoing SELD to report the clinical outcome and learning curve. Methods: Retrospective analysis of clinical outcome and learning curve were performed at a single center from clinical data collected from November 2015 to November 2018. A total of 82 patients who underwent single-level SELD for lumbar disc herniation with a minimum follow-up of 6.0 months were enrolled. Based on the findings that the cut-off of familiarity was 20 cases according to the cumulative study of operation time, patients were allocated to two groups: early group (n = 20) and late group (n = 62). The surgical, clinical, and radiological outcomes were retrospectively evaluated between the two groups to analyze the learning curve of SELD.Results: According to linear and log regression analyses, the operation time was obtained by the formula: operation time = 58.825 - (0.181 × [case number]) (p < 0.001). The mean operation time was significantly different between the two groups (mean 56.95 minutes; 95% confidence interval [CI], 49.12–64.78 in the early group versus mean 45.34 minutes; 95% CI, 42.45–48.22 in the late group; p = 0.008, non-parametric Mann-Whitney U test).Baseline characteristics, including demographic data, clinical factors, and findings of preoperative magnetic resonance imaging, did not differ between the two groups. Also, there was no significant difference in terms of surgical outcomes, including complication and failure rates, as well as clinical and radiological outcomes between the two groups.Conclusion: The learning curve of SELD was not as steep as that of other minimally invasive spinal surgery techniques, and the experience of surgery was not an influencing factor for outcome variation.

scholarly journals Learning curve of trans-sacral epiduroscopic laser decompression in herniated lumbar disc disease

2020 ◽  
Author(s):  
Seong Son ◽  
Chan Jong Yoo ◽  
Byung Rhae Yoo ◽  
Woo Seok Kim ◽  
Tae Seok Jeong
Keyword(s):  
Clinical Outcome ◽  
Minimally Invasive ◽  
Learning Curve ◽  
Lumbar Disc Herniation ◽  
Disc Herniation ◽  
Lumbar Disc ◽  
Operation Time ◽  
Early Group ◽  
Significant Difference ◽  
Late Group

Abstract Background: Trans-sacral epiduroscopic laser decompression (SELD) using slender epiduroscope and a holmium YAG laser is one of the minimally invasive surgical options for lumbar disc herniation.However, the learning curve of SELD and the effect of surgical proficiency on clinical outcome have not yet been established. We investigated patients with lumbar disc herniation undergoing SELD to report the clinical outcome and learning curve.Methods: Retrospective analysis of clinical outcome and learning curve were performed at a single center from clinical data collected from November 2015 to November 2018. A total of 82 patients who underwent single-level SELD for lumbar disc herniation with a minimum follow-up of 6.0 months were enrolled. Based on the findings that the cut-off of familiarity was 20 cases according to the cumulative study of operation time, patients were allocated to two groups: early group (n = 20) and late group (n = 62). The surgical, clinical, and radiological outcomes were retrospectively evaluated between the two groups to analyze the learning curve of SELD.Results: According to linear and log regression analyses, the operation time was obtained by the formula: operation time = 58.825 - (0.181 × [case number]) (p < 0.001). The mean operation time was significantly different between the two groups (mean 56.95 minutes; 95% confidence interval [CI], 49.12–64.78 in the early group versus mean 45.34 minutes; 95% CI, 42.45–48.22 in the late group; p = 0.008, non-parametric Mann-Whitney U test).Baseline characteristics, including demographic data, clinical factors, and findings of preoperative magnetic resonance imaging, did not differ between the two groups. Also, there was no significant difference in terms of surgical outcomes, including complication and failure rates, as well as clinical and radiological outcomes between the two groups.Conclusion: The learning curve of SELD was not as steep as that of other minimally invasive spinal surgery techniques, and the experience of surgery was not an influencing factor for outcome variation.

Safety and feasibility of laparoscopic surgery for colorectal cancer in elderly patients (YSURG1401 study).

2016 ◽  
Vol 34 (4_suppl) ◽  
pp. 725-725
Author(s):  
Yosuke Atsumi ◽  
Masakatsu Numata ◽  
Toru Aoyama ◽  
Tsutomu Hayashi ◽  
Naoto Yamamoto ◽  
...  
Keyword(s):  
Colorectal Cancer ◽  
Laparoscopic Surgery ◽  
Elderly Patients ◽  
Surgical Outcomes ◽  
Operation Time ◽  
University Hospital ◽  
Age Group ◽  
Significant Difference ◽  
Group A ◽  
Group B

725 Background: The safety and feasibility of laparoscopic surgery (LAP) for colorectal cancer has not yet been fully evaluated in elderly patients. The aim of this study was to compare the short term surgical outcomes of LAP and evaluate the safety and feasibility of LAP in colorectal cancer patients aged > 75 years. Methods: This retrospective study enrolled consecutive patients who underwent laparoscopic surgery for colorectal cancer between April 2013 and March 2014 at Yokohama City University Hospital and its related general hospitals. The patients were categorized into two groups: elderly patients (≧75 years of age: group A) and non-elderly patients ( < 75 years of age: group B). Surgical outcomes and postoperative complications were compared between the two groups. The severity of complications was evaluated using the Clavien–Dindo classification. Results: A total of 237 patients were evaluated in the present study. Eighty-four patients were classified into group A, and 153 into group B. Preoperative clinicopathological outcomes demonstrated no significant differences except for the ASA score. When comparing the surgical outcomes between group A and group B, the rate of conversion to open procedure (3.6 % vs 5.2 %, P = 0.751), median operation time (232 min vs 232 min, P = 0.318), median blood loss (20 ml vs 12 ml, P = 0.353). There was no significant difference in the surgical outcomes. Although the incidence of Japanese D3 dissection was significantly lower in Group A (56 % vs 69.3 %, P = 0.047), the incidences of postoperative surgical complications of grade ≧ Ⅱ were similar between two groups (15.5 % vs 11.8 %, p = 0.427). The length of postoperative hospital stay was also similar (10days vs 10days, p = 0.347). Conclusions: The present study suggested that laparoscopic surgery for colorectal cancer is safe and feasible, regardless of the age of the patient, especially for elderly patients who may be candidates for colorectal cancer surgery.

scholarly journals Learning curve of surgical novices using the single-port platform SymphonX: minimizing OR trauma to only one 15-mm incision

2020 ◽  
Author(s):  
Rabi R. Datta ◽  
Sebastian Schönhage ◽  
Thomas Dratsch ◽  
Justus Toader ◽  
Dolores T. Müller ◽  
...  
Keyword(s):  
Medical Students ◽  
Learning Curve ◽  
Single Port ◽  
Learning Curves ◽  
Laparoscopic Skill ◽  
Single Port Surgery ◽  
Significant Difference ◽  
Port System ◽  
Laparoscopic Experience ◽  
Needle Thread

Abstract Background Minimally invasive single-port surgery is always associated with large incisions up to 2–3 cm, complicated handling due to the lack of triangulation, and instrument crossing. The aim of this prospective study was to report how medical students without any laparoscopic experience perform several laparoscopic tasks (rope pass, paper cut, peg transfer, recapping, and needle threading) with the new SymphonX single-port platform and to examine the learning curves in comparison to the laparoscopic multi-port technique. Methods A set of 5 laparoscopic skill tests (Rope Pass, Paper cut, Peg Transfer, Recapping, Needle Thread) were performed with 3 repetitions. Medical students performed all tests with both standard laparoscopic instruments and the new platform. Time and errors were recorded. Results A total of 114 medical students (61 females) with a median age of 23 years completed the study. All subjects were able to perform the skill tests with both standard laparoscopic multi-port and the single-port laparoscopic system and were able to significantly improve their performance over the three trials for all five tasks—rope pass (p < 0.001), paper cut (p < 0.001), peg transfer (p < 0.001), needle threading (p < 0.001), and recapping (p < 0.001). In 3 out of 5 tasks, medical students performed the tasks faster using the standard multi-port system—rope pass (p < 0.001), paper cut (p < 0.001), and peg transfer (p < 0.001). In the task recapping, medical students performed the task faster using the new single-port system (p = 0.003). In the task needle threading, there was no significant difference between the standard multi-port system and the new single-port system (p > 0.05). Conclusion This is the first study analyzing learning curves of the commercially available SymphonX platform for abdominal laparoscopic surgery when used by novices. The learning curve and the error rate are promising.

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