The assessment of point-of-care ultrasound (POCUS) in residency: the benefits of a four-year longitudinally integrated curriculum

Abstract

Context: Point-of-care ultrasound (POCUS) has diverse applications across various clinical specialties, serving as an adjunct to clinical findings and as a tool for increasing the quality of patient care. Owing to its multifunctionality, a growing number of medical schools are increasingly incorporating POCUS training into their curriculum, some offering hands-on training during the first 2 years of didactics and others utilizing a longitudinal exposure model integrated into all 4 years of medical school education. Midwestern University Arizona College of Osteopathic Medicine (MWU-AZCOM) adopted a 4-year longitudinal approach to include POCUS education in 2017. There is a small body of published research supporting this educational model, but there is not much data regarding how this approach with ultrasound curriculum translates to real-world changes in POCUS use by graduate student clinicians having received this model of education.

Objectives: The objectives of this study are to determine the frequency of POCUS use by MWU-AZCOM graduates and to assess how a 4-year longitudinal ultrasound curriculum may enhance the abilities of MWU-AZCOM graduates to perform and interpret ultrasound imaging in specific residency programs.

Methods: The study was approved by the MWU Institutional Review Board (#IRBAZ-5169, approval date October 3, 2022). An anonymous novel 12-question survey was conducted utilizing Research Electronic Data Capture (REDCap), a secure online platform, and distributed to MWU-AZCOM 2021 and 2022 graduates via email. Survey questions were aimed at assessing frequency of use, utilization of different imaging modalities, reasons for utilizing POCUS, barriers/enablers to utilizing POCUS, ultrasound training, and confidence in performing scans and interpreting POCUS imaging. All of the 104 surveys returned were included in the study. Statistical software R version 4.3 was utilized to conduct statistical analyses.

Results: Of the 484 surveys distributed, 104 were completed (21.5 % response rate). Responses came from residents working in 14 different specialties, 50 in primary care and 54 in nonprimary care. Of all respondents, 85.6 % currently utilize POCUS in their practice on at least a monthly basis and 77.0 % believe that their POCUS training in medical school enriches their current practice in residency. The top five modalities utilized by residents were procedures (89.9 %), cardiac (88.8 %), pulmonary (82.0 %), Focused Assessment with Sonography for Trauma (FAST, 73.0 %), and vascular (71.9 %). Respondents recognized POCUS as a beneficial diagnostic tool (97.8 %) and reported enhancements in physical examination skills (58.4 %) and professional growth (61.8 %). Facilitators for POCUS adoption included cost-effectiveness (82.0 %), diagnostic differentiation (78.7 %), and safety (79.8 %). Barriers included a lack of trained faculty (27.9 %), absence of necessary equipment (26.9 %), and cost of equipment (22.1 %). Participants demonstrated high confidence levels in performing (74.0 %) and interpreting (76.0 %) POCUS, with 43.3 % believing that their POCUS training enhanced their attractiveness as residency candidates.

Conclusions: This study supports the positive impact of a 4-year longitudinal POCUS curriculum on graduates' practice. It emphasizes the link between MWU-AZCOM's curriculum and real-world clinical needs. Addressing identified barriers and advancing hands-on training can further enhance POCUS understanding, ensuring that future physicians are well-prepared to leverage its diagnostic potential across medical specialties.

Keywords: POCUS; curriculum; longitudinal ultrasound curriculum; medical school; residency; ultrasound.