Resident Instruction: Improving End-of-Year Medical Student Ultrasound Performance

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BACKGROUND AND OBJECTIVES: Having a limited number of trained faculty is a barrier to successful incorporation of ultrasound into undergraduate medical education. We evaluated the effectiveness of a resident-led extended focused assessment with sonography in trauma (eFAST) session administered to fourth-year medical students during their emergency medicine clerkship by measuring students' end-of-year eFAST performance and confidence. METHODS: This was a single-site cross-sectional study of all graduating medical students enrolled in fourth-year clerkships between May 1, 2022 and April 30, 2023. A 60-minute, team-based eFAST session (intervention), taught by emergency medicine residents, was added to students' fourth-year emergency medicine clerkship in September 2022. All students were assigned to review an eFAST video (control). End-of-year performance and self-reported confidence assessments used a 20-point objective structured clinical examination (OSCE) and a 5-point Likert scale, respectively. The mean OSCE and confidence scores for control and intervention groups were compared using two-sample t tests and repeated after removing students exposed to additional US experiences. RESULTS: Of 113 eligible students, 103 students participated: 48 in the control group, 55 in the intervention group. The intervention group scored higher on the OSCE than the control group (11.9 ±4.6 vs 9.9 ±5.1, P=.04) and reported similar confidence (3.2 ±1.0 vs 2.8 ±1.2; P=.09). After removing the 28 students with additional US experiences, the intervention group scored higher (10.8 ± 4.4 vs 8.2 ± 4.0; P=.01) and reported higher confidence (3.0 ±1.0 vs. 2.3 ±1.0, P=.01). CONCLUSIONS: Resident-taught eFAST instruction during emergency medicine clerkships led to improved end-of-year fourth-year medical student eFAST performance and confidence.

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