The impact of emergency department crowding and patient boarding on resident point-of-care ultrasound education

Abstract

Objectives: Emergency department (ED) crowding negatively affects patient care, but the effect on resident education has been difficult to quantify. We aimed to describe the relationship between ED crowding and residents’ ability to meet point-of-care ultrasound (POCUS) education goals. Methods: We retrospectively reviewed medical records from November 2021 to June 2023 at an academic level 1 trauma center, where emergency medicine residents complete longitudinal POCUS scanning shifts throughout 3 years of training. Residents are expected to complete ≥14 scans per scanning shift. We assessed whether completing the goal POCUS scans on a scanning shift (success: ≥14 scans, near-success: 10‒13, failure: <10) was associated with the average National Emergency Department Overcrowding Scale (NEDOCS) score or patient boarding hours during each scanning shift. Ordinal logistic regression was performed, controlling for the type of POCUS device available and the presence of medical students, interns, ultrasound faculty, and multiple residents. Results: Over 125 scanning shifts, 1340 scans were performed. Residents met the expected number of POCUS scans for 26.4% of scanning shifts, with 34.4% near-success and 39.2% failure. The average NEDOCS was 157.4 ± 31.9. POCUS success was associated with a lower mean NEDOCS (142 vs. 169, p < 0.001). After controlling for covariates, every 10-point increase in NEDOCS was associated with 17% lower odds of achieving the goal (odds ratio [OR] = 0.83, 95% confidence interval [CI] 0.73‒0.94, p = 0.003). Other significant factors were having only one resident on a scanning shift, which was associated with lower odds of success (OR = 0.41, 95% CI 0.18‒0.97, p = 0.043), and having a cart-based POCUS device available in addition to a handheld POCUS device, which was associated with higher odds of success (OR = 13.58, 95% CI 5.53‒33.38, p < 0.001). Conclusion: As ED crowding increased, residents were increasingly likely to fail to meet their POCUS education goals.