Plooster, Corbin

Abstract Background: Medical education commonly utilizes the “see one, do one” two-step approach for teaching psychomotor skills; however, recent evidence suggests that Peyton’s four-step method leads to superior learning. The effect of Peyton’s four-step method on long term skill retention is less apparent and has never been assessed for Point-of-Care Ultrasound (POCUS). The purpose of this research project was to evaluate the effectiveness of Peyton’s four-step method on teaching the POCUS psychomotor skills of image acquisition to novice learners. Additionally, this research project assessed the influence of Peyton’s four-step method at three different points in time during the skill acquisition phase, in the setting of ongoing deliberate skill practice. Methods: A single-blinded, repeated measures interventional study based on experimental design was completed. PA students from one large academic medical center were randomized into a control group (using the two-step method) and intervention group (using Peyton’s four-step method). Students were taught POCUS of the aorta, bladder, heart, lungs, and kidneys. Students' POCUS skills were assessed during the immediate, intermediate, and delayed learning phases. At each assessment, an organ-specific score and a total score were obtained. Scores were compared using a Wilcoxon rank sum test. An ordinal logistic regression analysis was performed using a generalized linear mixed model with a multinomial distribution and cumulative logit link function to assess overall effect of Peyton's four-step method. Results: Students who were taught using Peyton’s method were found to have an increased likelihood of higher total scores compared to those taught using usual instruction (OR = 4.2, p = 0.003). Peyton’s method was found to have increased likelihood of higher scores for cardiac (OR = 2.3, p = 0.032), lung (OR = 2.5, p = 0.034), and kidney (OR = 3.0, p = 0.015). Student performance statistically improved with Peyton’s four-step method during the immediate (p = 0.031) and delayed (p = 0.011) skill acquisition phases, but not in the intermediate phase. Conclusion: Peyton’s four-step method improves overall psychomotor skill acquisition for POCUS. Peyton’s four-step method specifically improved psychomotor skills in the immediate skill acquisition phase and the delayed skill acquisition phase. The benefit of Peyton’s four-step method was more prominent in higher complexity POCUS applications.

Incidental imaging findings require an assessment of risk and clinical relevance, as well as consideration of further evaluation. Incidental findings are common on imaging obtained in the hospital, with pulmonary nodules being among the most frequent findings that may require additional evaluation. We conducted a retrospective study to determine the factors associated with documentation of incidental findings in the hospital discharge summary, using pulmonary nodules reported on abdominal computed tomography (CT) as an example of incidental findings with well‐defined follow‐up guidelines. Between January 1, 2012 and December 31, 2014, 7173 patients underwent in‐patient abdominal CT without concurrent chest CT; of these patients, 62.2% were ≥60 years old, 50.6% were men, and 45.5% were current or former smokers. Incidental pulmonary nodules were reported in 402 patients (5.6%; 95% confidence interval [CI], 5.1%‐6.2%). Based on nodule size, reported size stability, and patients' smoking status, 208 patients (2.9%; 95% CI, 2.5%‐3.3%) required follow‐up surveillance, per the 2005 Fleischner Society guidelines. Of these 208 patients, 48 (23%) received discharge summaries that included documentation of the incidental findings, with 34 summaries including a recommendation for nodule follow‐up and 19 summaries including a time frame for repeat CT. Three factors were positively associated with the inclusion of the pulmonary nodule in the discharge summary: mention of the pulmonary nodule in the summary headings of the radiology report (P ≤ 0.001), radiologist recommendations for further surveillance (P ≤ 0.001), and medical discharging service (P = 0.016). These findings highlight the need for a multidisciplinary systems‐based approach to incidental pulmonary nodule documentation and surveillance.