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- Title
CUSUM analysis of learning curves for the head-mounted microscope in phonomicrosurgery.
- Authors
Chen, Ting; Vamos, Andrew C.; Dailey, Seth H.; Jiang, Jack J.
- Abstract
<bold>Objectives/hypothesis: </bold>To observe the learning curve of the head-mounted microscope in a phonomicrosurgery simulator using cumulative summation (CUSUM) analysis, which incorporates a magnetic phonomicrosurgery instrument tracking system (MPTS).<bold>Study Design: </bold>Retrospective case series.<bold>Methods: </bold>Eight subjects (6 medical students and 2 surgeons inexperienced in phonomicrosurgery) operated on phonomicrosurgical simulation cutting tasks while using the head-mounted microscope for 400 minutes total. Two 20-minute sessions occurred each day for 10 total days, with operation quality (Qs ) and completion time (T) being recorded after each session. Cumulative summation analysis of Qs and T was performed by using subjects' performance data from trials completed using a traditional standing microscope as success criteria.<bold>Results: </bold>The motion parameters from the head-mounted microscope were significantly better than the standing microscope (P < 0.01), but T was longer than that from the standing microscope (P < 0.01). No subject successfully adapted to the head-mounted microscope, as assessed by CUSUM analysis.<bold>Conclusion: </bold>Cumulative summation analysis can objectively monitor the learning process associated with a phonomicrosurgical simulator system, ultimately providing a tool to assess learning status. Also, motion parameters determined by our MPTS showed that, although the head-mounted microscope provides better motion control, worse Qs and longer T resulted. This decrease in Qs is likely a result of the relatively unstable visual environment that it provides. Overall, the inexperienced surgeons participating in this study failed to adapt to the head-mounted microscope in our simulated phonomicrosurgery environment.<bold>Level Of Evidence: </bold>4 Laryngoscope, 126:2295-2300, 2016.
- Subjects
FACILITATED learning; COGNITIVE structures; COGNITIVE processing of language; LEARNING curve; LEARNING strategies; MICROSCOPY equipment; COMPARATIVE studies; HEAD; LEARNING; RESEARCH methodology; MEDICAL cooperation; MICROSCOPY; MICROSURGERY; PHYSICAL sciences; RESEARCH; TIME; PRODUCT design; EVALUATION research; RETROSPECTIVE studies; EQUIPMENT &; supplies
- Publication
Laryngoscope, 2016, Vol 126, Issue 10, p2295
- ISSN
0023-852X
- Publication type
journal article
- DOI
10.1002/lary.25863