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- Title
Validation of a chicken thigh model and objective scoring systemfor microvascular competence assessment.
- Authors
Nimmons, Grace; Chang, Kristi; Funk, Gerry; Shonka, David; Pagedar, Nitin
- Abstract
After reading this poster, participants should be able to use a chicken thigh as a model for microvascular anastomosis, and describe how to assess competence using the microvascular Objective Structured Assessment of Technical Skills scoring system. Objective/Hypothesis: Laboratory models can help develop familiarity with handling of microinstruments under the microscope for training, and provide a means for assessment of technical skills. Previous models and simulations of microsurgery have been described, but few of these have been validated. The purpose of this study is to demonstrate the construct validity of the chicken thigh model and a novel scoring system for microvascular competence. Study design: Validation study Methods: Twenty surgical staff and trainees completed an anastomosis of a chicken ischiatic artery. Training level and microsurgical experience were assessed by questionnaire. The performance was recorded and scored using a version of the Objective Structured Assessment of Technical Skill (OSATS), which was modified to include microvascular task-specific measures. Scoring was performed independently by two experts. Results: Analysis of variance revealed a significant effect of training and microvascular experience for both the task-specific score and global rating scale score (p < 0.005 for all). Interrater reliability was 0.7. Experience level demonstrated a logarithmic relationship with task time. Conclusions: The chicken thigh model and microvascular OSATS can differentiate levels of microvascular ability. They demonstrate construct validity and reliability for the assessment of microvascular competence using a cost-effective and easily accessible model.
- Subjects
MICROCIRCULATION; SURGICAL anastomosis; MICROSURGERY; MEDICAL microscopy; CHICKENS as laboratory animals
- Publication
Laryngoscope, 2011, Vol 121, Issue S5, pS289
- ISSN
0023-852X
- Publication type
Article
- DOI
10.1002/lary.22245