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Huber T, Huettl F, Vradelis L, Lang H, Grimminger P, Sommer N, Hanke LI. [Evidence, Availability and Future Visions in Simulation in General and Visceral Surgery]. Zentralbl Chir 2023; 148:337-346. [PMID: 37562395 DOI: 10.1055/a-2111-0916] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/12/2023]
Abstract
Practice makes perfect - a saying that everyone has certainly heard. Surgeons of all levels of training can demonstrably practice to some extent on simulators. This training outside the operating theatre and independent of patients makes sense, both ethically and financially. Although the effectiveness of simulation in surgery has been proven several times, simulation training is not a mandatory part of surgical specialist training in Germany. Simulation covers a very wide range in terms of application, effort and costs. This review is intended to give an overview of the systems and their areas of application and the target group. The focus lies on the commonly available systems and possible advantages and disadvantages. Practical skills are in the foreground and all three pillars of general and visceral surgery - conventional techniques, laparoscopy and robotics - are taken into account. However, simulators alone do not achieve cost-benefit effectiveness. The full potential of such an investment can only be exploited with a site-specific, structured training concept in which simulation training according to the post-graduate year and appropriate allocation to surgeries in the operating room are closely interlinked. It should always be possible to train basic skills on site. The significant additional costs for complex simulation systems are possible, depending on the financial resources, or should be purchased in a network or for national courses. The techniques of immersive virtual reality in combination with artificial intelligence and deformation algorithms will certainly play a decisive role for the future of simulation, whereby the use of the available systems must be a primary goal. The integration of simulation into specialist training should be striven for, not least in order to justify the costs.
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Affiliation(s)
- Tobias Huber
- Klinik für Allgemein-, Viszeral- und Transplantationschirurgie, Universitätsmedizin der Johannes Gutenberg-Universität Mainz, Mainz, Deutschland
| | - Florentine Huettl
- Klinik für Allgemein-, Viszeral- und Transplantationschirurgie, Universitätsmedizin der Johannes Gutenberg-Universität Mainz, Mainz, Deutschland
| | - Lukas Vradelis
- Klinik für Allgemein-, Viszeral- und Transplantationschirurgie, Universitätsmedizin der Johannes Gutenberg-Universität Mainz, Mainz, Deutschland
| | - Hauke Lang
- Klinik für Allgemein-, Viszeral- und Transplantationschirurgie, Universitätsmedizin der Johannes Gutenberg-Universität Mainz, Mainz, Deutschland
| | - Peter Grimminger
- Klinik für Allgemein-, Viszeral- und Transplantationschirurgie, Universitätsmedizin der Johannes Gutenberg-Universität Mainz, Mainz, Deutschland
| | - Nils Sommer
- Klinik und Poliklinik für Allgemein-, Viszeral-, Thorax-und Gefäßchirurgie, Universitätsklinikum Bonn, Bonn, Deutschland
| | - Laura Isabel Hanke
- Klinik für Allgemein-, Viszeral- und Transplantationschirurgie, Universitätsmedizin der Johannes Gutenberg-Universität Mainz, Mainz, Deutschland
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Felinska EA, Fuchs TE, Kogkas A, Chen ZW, Otto B, Kowalewski KF, Petersen J, Müller-Stich BP, Mylonas G, Nickel F. Telestration with augmented reality improves surgical performance through gaze guidance. Surg Endosc 2023; 37:3557-3566. [PMID: 36609924 PMCID: PMC10156835 DOI: 10.1007/s00464-022-09859-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2022] [Accepted: 12/27/2022] [Indexed: 01/07/2023]
Abstract
BACKGROUND In minimally invasive surgery (MIS), trainees need to learn how to interpret the operative field displayed on the laparoscopic screen. Experts currently guide trainees mainly verbally during laparoscopic procedures. A newly developed telestration system with augmented reality (iSurgeon) allows the instructor to display hand gestures in real-time on the laparoscopic screen in augmented reality to provide visual expert guidance (telestration). This study analysed the effect of telestration guided instructions on gaze behaviour during MIS training. METHODS In a randomized-controlled crossover study, 40 MIS naive medical students performed 8 laparoscopic tasks with telestration or with verbal instructions only. Pupil Core eye-tracking glasses were used to capture the instructor's and trainees' gazes. Gaze behaviour measures for tasks 1-7 were gaze latency, gaze convergence and collaborative gaze convergence. Performance measures included the number of errors in tasks 1-7 and trainee's ratings in structured and standardized performance scores in task 8 (ex vivo porcine laparoscopic cholecystectomy). RESULTS There was a significant improvement 1-7 on gaze latency [F(1,39) = 762.5, p < 0.01, ηp2 = 0.95], gaze convergence [F(1,39) = 482.8, p < 0.01, ηp2 = 0.93] and collaborative gaze convergence [F(1,39) = 408.4, p < 0.01, ηp2 = 0.91] upon instruction with iSurgeon. The number of errors was significantly lower in tasks 1-7 (0.18 ± 0.56 vs. 1.94 ± 1.80, p < 0.01) and the score ratings for laparoscopic cholecystectomy were significantly higher with telestration (global OSATS: 29 ± 2.5 vs. 25 ± 5.5, p < 0.01; task-specific OSATS: 60 ± 3 vs. 50 ± 6, p < 0.01). CONCLUSIONS Telestration with augmented reality successfully improved surgical performance. The trainee's gaze behaviour was improved by reducing the time from instruction to fixation on targets and leading to a higher convergence of the instructor's and the trainee's gazes. Also, the convergence of trainee's gaze and target areas increased with telestration. This confirms augmented reality-based telestration works by means of gaze guidance in MIS and could be used to improve training outcomes.
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Affiliation(s)
- Eleni Amelia Felinska
- Department of General, Visceral and Transplant Surgery, Heidelberg University Hospital, 69120, Heidelberg, Germany
| | - Thomas Ewald Fuchs
- Department of General, Visceral and Transplant Surgery, Heidelberg University Hospital, 69120, Heidelberg, Germany
| | - Alexandros Kogkas
- Hamlyn Centre for Robotic Surgery, Imperial College London, London, SW7 2AZ, UK
- Department of Surgery and Cancer, Faculty of Medicine, Imperial College London, London, SW7 2AZ, UK
| | - Zi-Wei Chen
- Department of General, Visceral and Transplant Surgery, Heidelberg University Hospital, 69120, Heidelberg, Germany
| | - Benjamin Otto
- Department of General, Visceral and Transplant Surgery, Heidelberg University Hospital, 69120, Heidelberg, Germany
| | - Karl-Friedrich Kowalewski
- Department of Urology and Urological Surgery, University Medical Center Mannheim, Heidelberg University, 68167, Mannheim, Germany
| | - Jens Petersen
- Department of Medical Image Computing, German Cancer Research Center, 69120, Heidelberg, Germany
| | - Beat Peter Müller-Stich
- Department of General, Visceral and Transplant Surgery, Heidelberg University Hospital, 69120, Heidelberg, Germany
| | - George Mylonas
- Hamlyn Centre for Robotic Surgery, Imperial College London, London, SW7 2AZ, UK
- Department of Surgery and Cancer, Faculty of Medicine, Imperial College London, London, SW7 2AZ, UK
| | - Felix Nickel
- Department of General, Visceral and Transplant Surgery, Heidelberg University Hospital, 69120, Heidelberg, Germany.
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Crema E, Melani AGF, Romagnolo LGC, Marescaux J. Ten years of IRCAD, Barretos, SP, Brazil. Acta Cir Bras 2022; 37:e370608. [PMID: 36134854 PMCID: PMC9488511 DOI: 10.1590/acb370608] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2022] [Accepted: 05/20/2022] [Indexed: 11/22/2022] Open
Abstract
Minimally invasive surgery represented a significant milestone in modern surgery; however, continuous innovation and the emergence of new technologies pose new challenges in terms of surgical learning curves since new interventions are associated with increased surgical complexity and a higher risk of complications. For this reason, surgeons are aware of the beneficial effects of "learning before doing" and the importance of safely implementing new surgical procedures in order to obtain better patient outcomes. Considered the largest Latin American training center in minimally invasive surgery, IRCAD Barretos, São Paulo, Brazil, makes it possible to acquire surgical skills through training in different and the most complex areas of medicine, providing the experience of real and simulated situations, with focus on innovation. The center possesses state-of-the-art infrastructure and technology, with a very high-level teaching staff and an affectionate and hospitable reception. Since its inauguration, in 2011, the center has already qualified numerous professionals and has placed the country in a privileged position in terms of surgical knowledge. The present article describes the activities developed over these ten years of the institute in Brazil as the largest training center for surgeons of the continent in order to address the importance of surgical skills training.
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Affiliation(s)
- Eduardo Crema
- PhD, full professor. Universidade Federal do Triângulo Mineiro - Division of Digestive Tract Surgery - Uberaba (MG), Brazil
| | - Armando Geraldo Franchini Melani
- MSc, technical and scientific director. IRCAD Latin America, and physician at Americas Integrated Oncology Center - Rio de Janeiro (RJ), Brazil
| | - Luís Gustavo Capochin Romagnolo
- MD. Hospital de Câncer de Barretos - Pio XII Foundation, and scientific coordinator, IRCAD Latin America - Barretos (SP), Brazil
| | - Jacques Marescaux
- MD, founder and scientific coordinator. IRCAD Latin America - Barretos (SP), Brazil
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Mathias AP, Vogel P, Knauff M. Different cognitive styles can affect performance in laparoscopic surgery skill training. Surg Endosc 2019; 34:4866-4873. [PMID: 31823045 DOI: 10.1007/s00464-019-07267-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2019] [Accepted: 11/12/2019] [Indexed: 01/22/2023]
Abstract
BACKGROUND The lack of depth cues and haptic feedback makes minimally invasive surgery a cognitive challenge. It is therefore important to know which individuals are expected to perform well in minimally invasive surgery. In cognitive psychology, methods are available with which one can measure different cognitive thinking styles. It is well known that these cognitive styles correlate with many different tasks. We investigated whether this method can also predict performance on a box trainer (Lübeck Toolbox®), a device for training laparoscopic surgery. If so, the method might help to select and train those people who will most likely develop high skills in minimally invasive surgery. METHODS Thirty medical students and thirty non-medical students performed five laparoscopic surgical tasks on a box trainer. We measured the time required and the errors participants made on each task. Their cognitive style was measured with a method from cognitive psychology that distinguishes between people who think visually, spatially, or verbally. Furthermore, all students completed a subset of a standard intelligence test (Wechsler Adult Intelligence Scale) and three subtests of the German Medical University Admission Test (TMS). RESULTS Participants with spatial thinking styles performed best on the box trainer. Visual and verbal cognitive styles impeded box trainer performance. Performance on the box trainer could also be predicted by the TMS and IQ scores. CONCLUSIONS The study shows for the first time that a standard method from cognitive psychology can be used to distinguish between different cognitive styles in surgical education and that these different cognitive styles affect performance on a box trainer. Since the correlation between box trainer performance and surgical proficiency is well documented, the method might be an efficient way to reduce errors and to elevate patient safety in laparoscopic surgery.
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Affiliation(s)
- Armin Paul Mathias
- Department of Psychology, Experimental Psychology and Cognitive Science, Justus Liebig University, Otto-Behaghel-Strasse 10F, 35394, Giessen, Germany. .,Medical School, Justus Liebig University, Giessen, Germany.
| | - Peter Vogel
- Department of General, Visceral and Minimally Invasive Surgery, Hospital Bad Hersfeld, Bad Hersfeld, Germany
| | - Markus Knauff
- Department of Psychology, Experimental Psychology and Cognitive Science, Justus Liebig University, Otto-Behaghel-Strasse 10F, 35394, Giessen, Germany
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Friedrich M, Ober J, Haubruck P, Bergdolt C, Bruckner T, Kowalewski KF, Kadmon M, Müller-Stich BP, Tanner MC, Nickel F. Pilot evaluation of an objective structured assessment of technical skills tool for chest tube insertion. GMS JOURNAL FOR MEDICAL EDUCATION 2018; 35:Doc48. [PMID: 30539073 PMCID: PMC6278238 DOI: 10.3205/zma001194] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Figures] [Subscribe] [Scholar Register] [Received: 10/24/2016] [Revised: 07/25/2018] [Accepted: 08/13/2018] [Indexed: 06/09/2023]
Abstract
Background: Chest tube insertion is a standard intervention for management of various injuries of the thorax. Efficient clinical training of this and similar bed-side procedures is equally demanded and improvable. Here, we propose a nouveau means of assessment and feedback using an Objective Structured Assessment of Technical Skills (OSATS) tool. The modified OSATS for chest drain insertion is evaluated in a pilot trial focusing on chest drain insertion. Methods: Participants in the pilot trial were medical students (3rd-6th year of studies, n=9), junior residents (1st-3rd post-graduate year, n=12), senior residents (4th-6th post-graduate year, n=14), and attending surgeons (n=6) from Heidelberg University. Chest drain insertions on a cadaveric porcine model were rated by experts with the modified OSATS score. Participants' performances were videotaped and subsequently rated by two remote experts (video rating). Primary aim was to assess criterion validity of the OSATS to distinguish experience levels. Results: Kruskal-Wallis test showed significant differences between means of scores between four groups stratified by previous experience in chest tube insertion (level 0: 22.1±3.2 vs. level 1: 26.8±2.8 vs. level 2: 35.4±2.2 vs. level 3: 41.0±2.0; p=0.002; p1,3=0.049, p0,3=0.005). However, if groups were stratified by formal professional level, no statistically significant distinction could be made using OSATS. Hence, the OSATS tool showed criterion validity for differentiation between experience levels. Conclusion: In the pilot study, the modified OSATS for chest tube insertion was apt to standardize expert rating and could be used to measure skill and to depict different experience levels. The OSATS will help facilitate training and assessment of chest drain insertion and could therefore improve surgical training for trauma situations. According to our data, the OSATS might be integrated into modern curricula.
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Affiliation(s)
- Mirco Friedrich
- University of Heidelberg, Department of General, Visceral, and Transplantation Surgery, Heidelberg, Germany
| | - Julian Ober
- University of Heidelberg, HTRG - Heidelberg Trauma Research Group, Center for Orthopedics, Trauma Surgery and Spinal Cord Injury, Trauma and Reconstructive Surgery, Heidelberg, Germany
| | - Patrick Haubruck
- University of Heidelberg, HTRG - Heidelberg Trauma Research Group, Center for Orthopedics, Trauma Surgery and Spinal Cord Injury, Trauma and Reconstructive Surgery, Heidelberg, Germany
| | - Christian Bergdolt
- University of Heidelberg, HTRG - Heidelberg Trauma Research Group, Center for Orthopedics, Trauma Surgery and Spinal Cord Injury, Trauma and Reconstructive Surgery, Heidelberg, Germany
| | - Thomas Bruckner
- University of Heidelberg, Institute for Medical Biometry and Informatics, Heidelberg, Germany
| | - Karl-Friedrich Kowalewski
- University of Heidelberg, Department of General, Visceral, and Transplantation Surgery, Heidelberg, Germany
| | - Martina Kadmon
- University of Augsburg, Medical Faculty, Augsburg, Germany
| | - Beat-Peter Müller-Stich
- University of Heidelberg, Department of General, Visceral, and Transplantation Surgery, Heidelberg, Germany
| | - Michael Christopher Tanner
- University of Heidelberg, HTRG - Heidelberg Trauma Research Group, Center for Orthopedics, Trauma Surgery and Spinal Cord Injury, Trauma and Reconstructive Surgery, Heidelberg, Germany
| | - Felix Nickel
- University of Heidelberg, Department of General, Visceral, and Transplantation Surgery, Heidelberg, Germany
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Huber T, Paschold M, Hansen C, Lang H, Kneist W. ["I will do laparoscopy somewhere else" : Total, highly immersive virtual reality without side effects?]. Chirurg 2018; 88:956-960. [PMID: 28660325 DOI: 10.1007/s00104-017-0465-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
BACKGROUND For virtual reality laparosopic simulation we developed a new, highly immersive simulation mode. The goal of the current pilot study was to investigate if kinetosis or other negative vegetative side effects can be caused by a total virtual training set-up (TVRL). METHODS In this study 20 participants with varying degrees of expertise in laparoscopy performed 3 tasks (i.e. ring exchange, fine dissection and cholecystectomy) in regular (VRL) and immersive mode (TVRL) with a head-mounted display (HMD) on a laparoscopic simulator. Aside from performance scores, the heart rate was recorded and the occurrence of vertigo was investigated. RESULTS Surgical performance was independent of the VR mode (VRL or TVRL). Participants' heart rate was higher in TVRL without reaching statistical significance. Kinetosis occurred in two participants (10%) with a history of motion sickness. CONCLUSION Laparoscopic training can take place in a total virtual environment with limited nagative vegetative side effects. Special attention should be paid to participants with a history of motion sickness. The development of TVRL enables new perspectives for surgical training.
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Affiliation(s)
- T Huber
- Klinik für Allgemein‑, Viszeral- und Transplantationschirurgie, Universitätsmedizin Mainz, Langenbeckstr. 1, 55131, Mainz, Deutschland
| | - M Paschold
- Klinik für Allgemein‑, Viszeral- und Transplantationschirurgie, Universitätsmedizin Mainz, Langenbeckstr. 1, 55131, Mainz, Deutschland
| | - C Hansen
- Institut für Simulation und Grafik, Fakultät für Informatik, Otto-von-Guericke-Universität Magdeburg, Magdeburg, Deutschland
| | - H Lang
- Klinik für Allgemein‑, Viszeral- und Transplantationschirurgie, Universitätsmedizin Mainz, Langenbeckstr. 1, 55131, Mainz, Deutschland
| | - W Kneist
- Klinik für Allgemein‑, Viszeral- und Transplantationschirurgie, Universitätsmedizin Mainz, Langenbeckstr. 1, 55131, Mainz, Deutschland.
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Kowalewski KF, Schmidt MW, Proctor T, Pohl M, Wennberg E, Karadza E, Romero P, Kenngott HG, Müller-Stich BP, Nickel F. Skills in minimally invasive and open surgery show limited transferability to robotic surgery: results from a prospective study. Surg Endosc 2018; 32:1656-1667. [PMID: 29435749 DOI: 10.1007/s00464-018-6109-0] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2017] [Accepted: 02/07/2018] [Indexed: 02/07/2023]
Abstract
BACKGROUND There is limited evidence on the transferability of conventional laparoscopic and open surgical skills to robotic-assisted surgery. The primary aim of this study was to evaluate the transferability of expertise in conventional laparoscopy and open surgery to robotic-assisted surgery using the da Vinci Skills Simulator (dVSS). Secondary aims included evaluating the influence of individual participants' characteristics. METHODS Participants performed four tasks on the dVSS: Peg Board 1 (PB), Pick and Place (PP), Thread the Rings (TR), and Suture Sponge 1 (SS). Participants were classified into three groups (Novice, Intermediate, Experts) according to experience in laparoscopic and open surgery. All tasks were performed twice except for SS. Performance was assessed using the built-in scoring system. RESULTS 37 medical students and 25 surgeons participated. Experts did not perform significantly better than less experienced participants on the dVSS. Specifically, with regard to laparoscopic experience, total simulator scores were: Novices 68.2 ± 28.8; Intermediates 65.1 ± 31.2; Experts 65.1 ± 30.0; p = 0.611. Regarding open surgical experience, scores were: Novices 68.6 ± 28.7; Intermediates 68.2 ± 30.8; Experts 63.2 ± 30.3; p = 0.305. Although there were some significant differences among groups for single parameters in specific tasks, there was no constant superiority of one group. Laparoscopic and open surgical Novices improved significantly in overall score and time for all three tasks (p < 0.05). Laparoscopic intermediates improved only in PP time (4.64 ± 3.42; p = 0.006), open Intermediates in PB score (11.98 ± 13.01; p = 0.025), and open Experts in PP score (6.69 ± 11.48; p = 0.048). Laparoscopic experts showed no improvement. Participants with gaming experience had better overall scores than non-gamers when comparing all second attempts (Gamer 83.62 ± 7.57; Non-Gamer 76.31 ± 12.78; p = 0.008) as well as first and second attempts together (Gamer 72.08 ± 8.86; Non-Gamer 65.45 ± 11.68; p = 0.039). Musical and sports experience showed no correlation with robotic performance. CONCLUSIONS Robotic-assisted surgery requires skills distinct from conventional laparoscopy or open surgery. Basic robotic skills training prior to patient contact should be required.
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Affiliation(s)
- Karl-Friedrich Kowalewski
- Department of General, Visceral, and Transplantation Surgery, University Hospital of Heidelberg, University of Heidelberg, Im Neuenheimer Feld 110, 69120, Heidelberg, Germany
| | - Mona W Schmidt
- Department of General, Visceral, and Transplantation Surgery, University Hospital of Heidelberg, University of Heidelberg, Im Neuenheimer Feld 110, 69120, Heidelberg, Germany
| | - Tanja Proctor
- Institute of Medical Biometry and Informatics, University of Heidelberg, Im Neuenheimer Feld 130.3, 69120, Heidelberg, Germany
| | - Moritz Pohl
- Institute of Medical Biometry and Informatics, University of Heidelberg, Im Neuenheimer Feld 130.3, 69120, Heidelberg, Germany
| | - Erica Wennberg
- Department of General, Visceral, and Transplantation Surgery, University Hospital of Heidelberg, University of Heidelberg, Im Neuenheimer Feld 110, 69120, Heidelberg, Germany
| | - Emir Karadza
- Department of General, Visceral, and Transplantation Surgery, University Hospital of Heidelberg, University of Heidelberg, Im Neuenheimer Feld 110, 69120, Heidelberg, Germany
| | - Philipp Romero
- Division of Pediatric Surgery, Department of General, Visceral, and Transplantation Surgery, University of Heidelberg, Im Neuenheimer Feld 110, 69120, Heidelberg, Germany
| | - Hannes G Kenngott
- Department of General, Visceral, and Transplantation Surgery, University Hospital of Heidelberg, University of Heidelberg, Im Neuenheimer Feld 110, 69120, Heidelberg, Germany
| | - Beat P Müller-Stich
- Department of General, Visceral, and Transplantation Surgery, University Hospital of Heidelberg, University of Heidelberg, Im Neuenheimer Feld 110, 69120, Heidelberg, Germany
| | - Felix Nickel
- Department of General, Visceral, and Transplantation Surgery, University Hospital of Heidelberg, University of Heidelberg, Im Neuenheimer Feld 110, 69120, Heidelberg, Germany.
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Kowalewski KF, Garrow CR, Proctor T, Preukschas AA, Friedrich M, Müller PC, Kenngott HG, Fischer L, Müller-Stich BP, Nickel F. LapTrain: multi-modality training curriculum for laparoscopic cholecystectomy-results of a randomized controlled trial. Surg Endosc 2018; 32:3830-3838. [PMID: 29435758 DOI: 10.1007/s00464-018-6110-7] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2017] [Accepted: 02/07/2018] [Indexed: 12/18/2022]
Abstract
BACKGROUND Multiple training modalities for laparoscopy have different advantages, but little research has been conducted on the benefit of a training program that includes multiple different training methods compared to one method only. This study aimed to evaluate benefits of a combined multi-modality training program for surgical residents. METHODS Laparoscopic cholecystectomy (LC) was performed on a porcine liver as the pre-test. Randomization was stratified for experience to the multi-modality Training group (12 h of training on Virtual Reality (VR) and box trainer) or Control group (no training). The post-test consisted of a VR LC and porcine LC. Performance was rated with the Global Operative Assessment of Laparoscopic Skills (GOALS) score by blinded experts. RESULTS Training (n = 33) and Control (n = 31) were similar in the pre-test (GOALS: 13.7 ± 3.4 vs. 14.7 ± 2.6; p = 0.198; operation time 57.0 ± 18.1 vs. 63.4 ± 17.5 min; p = 0.191). In the post-test porcine LC, Training had improved GOALS scores (+ 2.84 ± 2.85 points, p < 0.001), while Control did not (+ 0.55 ± 2.34 points, p = 0.154). Operation time in the post-test was shorter for Training vs. Control (40.0 ± 17.0 vs. 55.0 ± 22.2 min; p = 0.012). Junior residents improved GOALS scores to the level of senior residents (pre-test: 13.7 ± 2.7 vs. 18.3 ± 2.9; p = 0.010; post-test: 15.5 ± 3.4 vs. 18.8 ± 3.8; p = 0.120) but senior residents remained faster (50.1 ± 20.6 vs. 25.0 ± 1.9 min; p < 0.001). No differences were found between groups on the post-test VR trainer. CONCLUSIONS Structured multi-modality training is beneficial for novices to improve basics and overcome the initial learning curve in laparoscopy as well as to decrease operation time for LCs in different stages of experience. Future studies should evaluate multi-modality training in comparison with single modalities. TRIAL REGISTRATION German Clinical Trials Register DRKS00011040.
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Affiliation(s)
- K F Kowalewski
- Department of General, Visceral, and Transplantation Surgery, University of Heidelberg, Im Neuenheimer Feld 110, 69120, Heidelberg, Germany
| | - C R Garrow
- Department of General, Visceral, and Transplantation Surgery, University of Heidelberg, Im Neuenheimer Feld 110, 69120, Heidelberg, Germany
| | - T Proctor
- Institute of Medical Biometry and Informatics, University of Heidelberg, Im Neuenheimer Feld 130.3, 69120, Heidelberg, Germany
| | - A A Preukschas
- Department of General, Visceral, and Transplantation Surgery, University of Heidelberg, Im Neuenheimer Feld 110, 69120, Heidelberg, Germany
| | - M Friedrich
- Department of General, Visceral, and Transplantation Surgery, University of Heidelberg, Im Neuenheimer Feld 110, 69120, Heidelberg, Germany
| | - P C Müller
- Department of General, Visceral, and Transplantation Surgery, University of Heidelberg, Im Neuenheimer Feld 110, 69120, Heidelberg, Germany
| | - H G Kenngott
- Department of General, Visceral, and Transplantation Surgery, University of Heidelberg, Im Neuenheimer Feld 110, 69120, Heidelberg, Germany
| | - L Fischer
- Department of General, Visceral, and Transplantation Surgery, University of Heidelberg, Im Neuenheimer Feld 110, 69120, Heidelberg, Germany
| | - B P Müller-Stich
- Department of General, Visceral, and Transplantation Surgery, University of Heidelberg, Im Neuenheimer Feld 110, 69120, Heidelberg, Germany
| | - F Nickel
- Department of General, Visceral, and Transplantation Surgery, University of Heidelberg, Im Neuenheimer Feld 110, 69120, Heidelberg, Germany.
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9
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Roch PJ, Rangnick HM, Brzoska JA, Benner L, Kowalewski KF, Müller PC, Kenngott HG, Müller-Stich BP, Nickel F. Impact of visual-spatial ability on laparoscopic camera navigation training. Surg Endosc 2017; 32:1174-1183. [PMID: 28840317 DOI: 10.1007/s00464-017-5789-1] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2017] [Accepted: 07/28/2017] [Indexed: 10/19/2022]
Abstract
BACKGROUND Technical limitations of minimally invasive surgery challenge both surgeons and camera assistants. Current research indicates that visual-spatial ability (VSA) has impact on learning of laparoscopic camera navigation (LCN). However, it remains unclear if complexity of LCN tasks influences the impact of VSA. The aim of this study was to examine the influence of VSA on LCN training within tasks of different complexity levels. METHODS The present study was conducted as a monocentric prospective trial. VSA was assessed with a cube comparison test before participants underwent LCN training. LCN training consisted of three tasks with increasing complexity. Each task was performed four times and performance was assessed each time. Correlations and multivariate regression analysis were used to assess the influence of VSA on LCN skills. RESULTS Seventy-one participants were included (35 males). Significant performance improvement and faster completion times were observed from the first to fourth trial of all three LCN training tasks. Significant positive correlations between VSA and performance on LCN task 3 were found (performance: r s = 0.47; p < 0.001, time: r s = -0.43; p < 0.001). Multivariate regression revealed that higher VSA resulted in greater reduction of time between the first trials of LCN training task 3 (B = -1.67, p = 0.031). CONCLUSION In the present study, all trainees improved LCN performance during the training. VSA seems to have impact on LCN performance and training progress particularly for complex LCN tasks. The relation of VSA and LCN performance was stronger for less experienced participants and in the beginning of the learning phase.
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Affiliation(s)
- Paul J Roch
- Department of General, Visceral, and Transplantation Surgery, University of Heidelberg, Im Neuenheimer Feld 110, 69120, Heidelberg, Germany
| | - Henriette M Rangnick
- Department for Visceral, Thoracic and Vascular Surgery at the University Hospital, Technical University Dresden, Fetscherstr. 74, 01307, Dresden, Germany
| | - Julia A Brzoska
- Department of General, Visceral, and Transplantation Surgery, University of Heidelberg, Im Neuenheimer Feld 110, 69120, Heidelberg, Germany
| | - Laura Benner
- Institute for Medical Biometry and Informatics, University of Heidelberg, Im Neuenheimer Feld 130.3, 69120, Heidelberg, Germany
| | - Karl-Friedrich Kowalewski
- Department of General, Visceral, and Transplantation Surgery, University of Heidelberg, Im Neuenheimer Feld 110, 69120, Heidelberg, Germany
| | - Philip C Müller
- Department of General, Visceral, and Transplantation Surgery, University of Heidelberg, Im Neuenheimer Feld 110, 69120, Heidelberg, Germany
| | - Hannes G Kenngott
- Department of General, Visceral, and Transplantation Surgery, University of Heidelberg, Im Neuenheimer Feld 110, 69120, Heidelberg, Germany
| | - Beat-Peter Müller-Stich
- Department of General, Visceral, and Transplantation Surgery, University of Heidelberg, Im Neuenheimer Feld 110, 69120, Heidelberg, Germany
| | - Felix Nickel
- Department of General, Visceral, and Transplantation Surgery, University of Heidelberg, Im Neuenheimer Feld 110, 69120, Heidelberg, Germany.
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10
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Roch PJ, Friedrich T, Bönninghoff R, Dinter D, Rickert A. [Laparoscopic resection of a giant colon diverticulum : Case report and review of the literature]. Chirurg 2017; 88:682-686. [PMID: 28374053 DOI: 10.1007/s00104-017-0412-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
BACKGROUND Giant diverticula are rare complications of diverticular disease. Current opinion regards operative therapy as the method of choice for the treatment of symptomatic giant diverticula; however, there is neither consensus about the technique nor about the necessary extent of resection. Based on a non-systematic review of the literature, an overview of giant diverticula in terms of epidemiology, pathology and classification is given. The current case is considered with respect to appropriate diagnostic procedures and possible therapeutic options. CASE PRESENTATION An 80-year-old female patient presented to the emergency department with abdominal pain and dyspnea. A computed tomography scan showed a large gas-filled structure in the upper left abdomen adjacent to the left colon. A giant colonic diverticulum was suspected and laparoscopy was performed. Intraoperatively, the diagnosis of a giant colon diverticulum located at the splenic flexure was confirmed. An unremarkable diverticulosis only was found in the descending colon. The giant diverticulum was treated by an atypical colon wedge resection and the postoperative course was uneventful. DISCUSSION This case report describes a laparoscopic atypical colon wedge resection as treatment of a giant colon diverticulum. Only four laparoscopic bowel resections in terms of sigmoid resections or hemicolectomy with primary anastomosis have been reported. Minimally invasive surgery can be a valuable alternative to open procedures. In the current case a laparoscopic atypical colon wedge resection was safely performed. This option might be considered as an alternative to extended resections of giant diverticula. Localization of the giant diverticulum and the simultaneous existence of diverticular disease are the main criteria for the decision between the different operative approaches.
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Affiliation(s)
- P J Roch
- Klinik für Allgemein-, Viszeral- und Transplantationschirurgie, Universitätsklinikums Heidelberg, Universitätsklinikum Heidelberg, Im Neuenheimer Feld 110, 69120, Heidelberg, Deutschland
| | - T Friedrich
- Radiologische Abteilung des St. Josefskrankenhaus Heidelberg, St. Josefskrankenhaus Heidelberg, Landhausstraße 25, 69115, Heidelberg, Deutschland
| | - R Bönninghoff
- Chirurgische Abteilung des St. Josefskrankenhaus Heidelberg, St. Josefskrankenhaus Heidelberg, Landhausstraße 25, 69115, Heidelberg, Deutschland
| | - D Dinter
- Radiologie Schwetzingen, Bodelschwinghstr. 10, 68723, Schwetzingen, Deutschland
| | - A Rickert
- Chirurgische Abteilung des St. Josefskrankenhaus Heidelberg, St. Josefskrankenhaus Heidelberg, Landhausstraße 25, 69115, Heidelberg, Deutschland.
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11
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Pförringer D, Markgraf B, Weber M, Seidl F, Crönlein M, Friedl G, Hoffmann R, Biberthaler P. [Determination of training costs associated with surgical procedures during specialization as an orthopaedic and trauma surgeon]. Unfallchirurg 2016; 120:844-853. [PMID: 27470255 DOI: 10.1007/s00113-016-0222-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
BACKGROUND Trauma surgery is a discipline in which the training phase for specialization requires a technical and time-intensive learning curve, including the repetitive training of manual skills. This results in prolonged operation times and thus elevated costs. OBJECTIVES The present study retrospectively examines operations in trauma surgery and orthopaedics at a Munich university hospital according to the required curriculum for further specialist training. The duration of procedures at the various training levels and the resulting costs were compared. MATERIAL AND METHODS Based on digital surgical records, more than 2,000 surgical interventions were analysed and checked that they fulfilled the practical requirements. Patients with multiple injuries and polytrauma, in addition to irregularly complex cases, were removed from the calculation to ensure high comparability of the individual cases. This yielded more than 1,000+ cases for evaluation. The per-minute cost was calculated to allow for the translation of operating time into costs. RESULTS The study shows a prolonged duration of operating time of 19.75 % when the procedure was conducted by residents. This prolongation can be split into 37 subgroups according to body region and type of procedure. The prolongation of operation time could be quantified as a specific prolongation per cluster, in addition to cumulative prolongation. By including the operating costs, the operation-dependent training costs are shown as an exact sum of Euros. CONCLUSION Surgical training of residents costs hospitals the appropriate amounts of time and money and reduces the overall number of procedures performed, justifying special consideration of the financing of training hospitals.
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Affiliation(s)
- D Pförringer
- Klinikum rechts der Isar, Klinik und Poliklinik für Unfallchirurgie, Technische Universität München, Ismaninger Str. 22, 81675, München, Deutschland.
| | - B Markgraf
- Fakultät für Wirtschaftswissenschaften, Lehrstuhl für BWL - Controlling, Technische Universität München, München, Deutschland
| | - M Weber
- Fakultät für Wirtschaftswissenschaften, Lehrstuhl für BWL - Controlling, Technische Universität München, München, Deutschland
| | - F Seidl
- Klinikum rechts der Isar, Klinik und Poliklinik für Unfallchirurgie, Technische Universität München, Ismaninger Str. 22, 81675, München, Deutschland
| | - M Crönlein
- Klinikum rechts der Isar, Klinik und Poliklinik für Unfallchirurgie, Technische Universität München, Ismaninger Str. 22, 81675, München, Deutschland
| | - G Friedl
- Fakultät für Wirtschaftswissenschaften, Lehrstuhl für BWL - Controlling, Technische Universität München, München, Deutschland
| | - R Hoffmann
- BG Unfallklinik Frankfurt am Main gGmbH, Frankfurt, Germany
| | - P Biberthaler
- Klinikum rechts der Isar, Klinik und Poliklinik für Unfallchirurgie, Technische Universität München, Ismaninger Str. 22, 81675, München, Deutschland
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