Idle time: an underdeveloped performance metric for assessing surgical skill - 20/03/15
, Drew N. Rutherford, M.S. a, b, Rebecca D. Ray, Ph.D. a, Shlomi Laufer, Ph.D. a, c, Calvin Kwan, B.S. a, Elaine R. Cohen, M.Ed a, Andrea Mason, Ph.D. b, Carla M. Pugh, M.D., Ph.D. aAbstract |
Background |
The aim of this study was to evaluate validity evidence using idle time as a performance measure in open surgical skills assessment.
Methods |
This pilot study tested psychomotor planning skills of surgical attendings (n = 6), residents (n = 4) and medical students (n = 5) during suturing tasks of varying difficulty. Performance data were collected with a motion tracking system. Participants' hand movements were analyzed for idle time, total operative time, and path length. We hypothesized that there will be shorter idle times for more experienced individuals and on the easier tasks.
Results |
A total of 365 idle periods were identified across all participants. Attendings had fewer idle periods during 3 specific procedure steps (P < .001). All participants had longer idle time on friable tissue (P < .005).
Conclusions |
Using an experimental model, idle time was found to correlate with experience and motor planning when operating on increasingly difficult tissue types. Further work exploring idle time as a valid psychomotor measure is warranted.
Le texte complet de cet article est disponible en PDF.Keywords : Motion tracking, Surgical skills, Assessment, Idle time, Path length, Simulation
Plan
| Supported by the National Institutes of Health (Number 1F32EB017084-01) entitled “Automated Performance Assessment System: A New Era in Surgical Skills Assessment” and the Department of Defense (Number W81XWH-13-1-0080) entitled “Psycho-Motor and Error Enabled Simulations Modeling Vulnerable Skills in the Pre-Mastery Phase–Medical Practice Initiative Procedural Skill Decay and Maintenance (MPI-PSD)”. Dr. Pugh holds a patent entitled “Medical Examination Teaching System” US 6428323 B1 that relates to the use of sensor technology for capturing hands-on performance. Study sponsors were not involved in study design; data collection, analysis and interpretation; writing of the manuscript; or decision to submit the manuscript for publication. |
Vol 209 - N° 4
P. 645-651 - avril 2015 Retour au numéroBienvenue sur EM-consulte, la référence des professionnels de santé.
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