Jujo, Satoshi University of Hawaii at Manoa|Kameda General Hospital
Lee-Jayaram, Jannet J. University of Hawaii at Manoa
Sakka, Brandan I. University of Hawaii at Manoa
Nakahira, Atsushi University of Hawaii at Manoa|Nara Prefecture General Medical Center
Kataoka, Akihisa Teikyo University
Izumo, Masaki St. Marianna University School of Medicine
Kusunose, Kenya Tokushima University Tokushima University Educator and Researcher Directory KAKEN Search Researchers
Athinartrattanapong, Natsinee University of Hawaii at Manoa|Mahidol University
Oikawa, Sayaka University of Hawaii at Manoa|Fukushima Medical University
Berg, Benjamin W. University of Hawaii at Manoa
Background: Cardiac point-of-care ultrasound (POCUS) training has been integrated into medical school curricula. However, there is no standardized cardiac POCUS training method for medical students. To address this issue, the American Society of Echocardiography (ASE) proposed a framework for medical student cardiac POCUS training. The objective of this pilot study was to develop a medical student cardiac POCUS curriculum with test scoring systems and test the curriculum feasibility for a future definitive study.
Methods: Based on the ASE-recommended framework, we developed a cardiac POCUS curriculum consisting of a pre-training online module and hands-on training with a hand-held ultrasound (Butterfly iQ, Butterfly Network Inc., Guilford, CT, USA). The curriculum learning effects were assessed with a 10-point maximum skill test and a 40-point maximum knowledge test at pre-, immediate post-, and 8-week post-training. To determine the curriculum feasibility, we planned to recruit 6 pre-clinical medical students. We semi-quantitatively evaluated the curriculum feasibility in terms of recruitment rate, follow-up rate 8 weeks after training, instructional design of the curriculum, the effect size (ES) of the test score improvements, and participant satisfaction. To gather validity evidence of the skill test, interrater and test-retest reliability of 3 blinded raters were assessed.
Results: Six pre-clinical medical students participated in the curriculum. The recruitment rate was 100% (6/6 students) and the follow-up rate 8 weeks after training was 100% (6/6). ESs of skill and knowledge test score differences between pre- and immediate post-, and between pre- and 8-week post-training were large. The students reported high satisfaction with the curriculum. Both interrater and test-retest reliability of the skill test were excellent.
Conclusions: This pilot study confirmed the curriculum design as feasible with instructional design modifications including the hands-on training group size, content of the cardiac POCUS lecture, hands-on teaching instructions, and hand-held ultrasound usage. Based on the pilot study findings, we plan to conduct the definitive study with the primary outcome of long-term skill retention 8 weeks after initial training. The definitive study has been registered in ClinicalTrials.gov (Identifier: NCT04083924).
Pilot and Feasibility Studies
BioMed Central|Springer Nature
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