Vessel ligation training via an adaptive simulation curriculum

The Journal of Surgical Research
Yinin HuSara K Rasmussen

Abstract

A cost-effective model for open vessel ligation is currently lacking. We hypothesized that a novel, inexpensive vessel ligation simulator can efficiently impart transferrable surgical skills to novice trainees. VesselBox was designed to simulate vessel ligation using surgical gloves as surrogate vessels. Fourth-year medical students performed ligations using VesselBox and were evaluated by surgical faculty using the Objective Structured Assessments of Technical Skills global rating scale and a task-specific checklist. Subsequently, each student was trained using VesselBox in an adaptive practice session guided by cumulative sum. Posttesting was performed on fresh human cadavers by evaluators blinded to pretest results. Sixteen students completed the study. VesselBox practice sessions averaged 21.8 min per participant (interquartile range 19.5-27.7). Blinded posttests demonstrated increased proficiency, as measured by both Objective Structured Assessments of Technical Skills (3.23 versus 2.29, P < 0.001) and checklist metrics (7.33 versus 4.83, P < 0.001). Median speed improved from 128.2 s to 97.5 s per vessel ligated (P = 0.001). After this adaptive training protocol, practice volume was not associated with posttest performanc...Continue Reading

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Citations

Jan 3, 2016·American Journal of Surgery·Justin L HsuKimberly M Brown
Nov 21, 2015·Journal of Pediatric Surgery·Yinin HuSara K Rasmussen
Nov 29, 2020·Journal of Vascular Surgery·Rachel FalconerAngus J M Watson

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