Accessible Laparoscopic Instrument Tracking (“InsTrac”): Construct Validity in a Take-Home Box Simulator

Partridge, Roland; Hughes, Mark; Brennan, Paul M.; Hennessey, Iain A.M.

doi:10.1089/lap.2014.0015

Cited by 29 publications

(35 citation statements)

References 26 publications

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“…Our results demonstrate 'construct validity' of the wireless inertial sensors' assessment [25]. The system is able to distinguish between the three levels of previous surgical experience (the 'construct'), for the metrics of task duration, angular distance, average acceleration and motion smoothness.…”

Section: Discussionsupporting

confidence: 51%

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Demonstration Paper

Evans

Partridge

Arvind

2014

Proceedings of the Wireless Health 2014 on National Institutes of Health

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A novel approach, using wireless inertial sensors (the Orient specks), is presented for the automated assessment of surgical skills in a physical laparoscopic ('keyhole') surgery simulator. Performance metrics are applied to inertial data from subjects categorized by previous laparoscopic experience: novices (less than 2 months); intermediates (less than 2 years) and experts (6 to 10 years of active laparoscopic operating experience). These metrics are shown to distinguish between groups, demonstrating 'construct validity' of the system. The method is evaluated against an optical instrument tracking system and compares favourably, thus demonstrating 'concurrent validity' with an existing method. Our findings suggest that a combination of the proposed metrics can be used to generate a 'technical performance score' for a given laparoscopic simulated task. This has the potential to help guide surgical training and monitoring of surgical performance.

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Section: Discussionsupporting

confidence: 51%

“…The system demonstrates 'construct validity' by distinguishing between levels of previous operative experience. The correlation of shared metric values with the InsTrac visual tracking system is evidence of 'concurrent validity' -i.e., scores are concurrent with another previously validated tool for measuring surgical performance [25].…”

Section: Discussionmentioning

confidence: 99%

Demonstration Paper

Evans

Partridge

Arvind

2014

Proceedings of the Wireless Health 2014 on National Institutes of Health

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“…The eoSim was used with a computer vision instrument tracking software application called ‘InsTrac’ (eoSurgical, Edinburgh). This maps the movement of instruments within the simulator and generates instrument movement metrics 21 22…”

Section: Methodsmentioning

confidence: 99%

Incentivising practice with take-home laparoscopic simulators in two UK Core Surgical Training programmes

et al. 2016

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IntroductionPractice using simulators has been validated as a mean for surgical trainees to improve basic laparoscopic skills and free their attention for higher cognitive functions. However, mere provision of equipment does not result in frequent practice. This study assesses one approach to incentivising practice within core surgical training programmes and leads to further recommendations.Methods30 core surgical trainees (CST) starting laparoscopic-based specialties were recruited from East and West of Scotland CST programmes and given take-home laparoscopic simulators, with six training modules. Attainment of target metric scores generated an eCertificate, to be rewarded by progression in the live theatre. Questionnaires assessed confounding variables and explored CSTs’ anxieties about laparoscopy.Results27 trainees (90%) agreed to participate (mean age 28 years, range 24–25; 17 males). 13 CSTs (48%) were in the first year of surgical training. 11 (41%) had no previous simulation experience and 7 (32%) CSTs played video games >3 hours/week. 12 of 27 trainees (44%) completed ≥1 task and 7 completed all (26%).Performances improved in some participants, but overall engagement with the programme was poor. Reasons given included poor internet connectivity, busy rotations and examinations. CSTs who engaged in the study significantly reduced their anxiety (mean 4.96 vs 3.56, p<0.05).ConclusionsThe provision of take-home laparoscopic simulators with accompanying targets did not successfully incentivise CSTs to practise. However, the subgroup who did engage with the project reported performance improvements and significantly reduced anxiety. Proposals to overcome barriers to practising in simulation, including obligatory simulation-based assessments, are discussed.

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“…To compare the performances of the proposed master and Phantom Omni, two surgical tasks were performed using the developed robotic MIS system. The first experiment was a peg transfer task, which is one of the fundamental tasks in laparoscopic surgery (FLS™; Society of American Gastrointestinal and Endoscopic Surgeons, Los Angeles, USA) skills, and the second experiment was the object transfer task, which is one of the eoSim (eoSurgical™, Edinburgh, Scotland, UK) laparoscopic simulator tasks . Each training module for the peg transfer and object transfer tasks is shown in Figure .…”

Section: Methodsmentioning

confidence: 99%

“…The first experiment was a peg transfer task, which is one of the fundamental tasks in laparoscopic surgery (FLS™; Society of American Gastrointestinal and Endoscopic Surgeons, Los Angeles, USA) skills, and the second experiment was the object transfer task, which is one of the eoSim (eoSurgical™, Edinburgh, Scotland, UK) laparoscopic simulator tasks. [37][38][39] Each training module for the peg transfer and object transfer tasks is shown in Figure 10. All experiments were carried out in accordance with the approved guidelines of the Institutional Review Board (IRB) of Korea Advanced Institute of Science and Technology (KAIST).…”

Section: Experimental Methodsmentioning

confidence: 99%