CONTEXT CONTEXT A novel multi-site 'train the trainer' point-of-care ultrasound (POCUS) training course was designed to better meet the graduate medical education learning needs of a geographically dispersed consortium of 16 community-based Michigan emergency medicine (EM) residency programs. The specific aim of this study was to explore the feasibility of using volunteer EM physicians who were novices with ultrasound techniques as instructors for a POCUS course. Additionally, the authors evaluated the effectiveness and consistency of a POCUS course delivered over multiple sites to enhance EM residents' ultrasound knowledge and skill acquisition. METHODS METHODS For the initial session, the lead instructor conducted a focused two-hour course with the novice instructors. A subsequent four-hour session was then repeated for EM residents whereby the aforementioned novice instructors provided the hands-on instruction. The residents were given 10-item pre-and 20-item post-course knowledge tests to gauge the effectiveness of the instruction model. After the course, a satisfaction survey was administered to the resident participants and a qualitative open-ended survey to the volunteer EM physicians who served as instructors. RESULTS RESULTS Forty-two EM residents from 11 different residency programs attended at one of the three courses that were offered. After adjustments for size differences in the pre-and post-training tests, 35 (87.5%) of total sample resident learners' scores proportionately increased from pre-to post-test scores, with five (11.9%) other residents maintaining their pre-course score levels and only two (4.8%) residents experienced a post-score decline. In addition, resident participants responded favorably to a post-course summary evaluation with an average response of 4.8 (0-5 Likert scale) demonstrating overall satisfaction with the course. In the separate qualitative survey given to instructors, comments consistently conveyed a perceived benefit for the volunteer EM physicians. CONCLUSIONS CONCLUSIONS The evaluation of this novel model supports the feasibility of the 'train the trainer' program. It provides a proof of principle that train the trainer model can be implemented for POCUS training courses. Despite the small sample size, our results show an increase in the pre-to post-test scores among most participating residents. This model provides an additional option for EM residency program educators to consider when developing their POCUS training courses across multiple GME settings.
CONTEXT CONTEXT During the past two decades, bedside ultrasound has revolutionized the practice of emergency medicine. Physicians are now expected to be competent in utilizing ultrasound skills, for patients presenting with conditions ranging from trauma to skin evaluations. The overall purpose of this quality improvement/patient safety (QIPS) project was to evaluate the effectiveness of a pair of five-hour, hands-on didactic/training sessions, aimed at preparing a sample of emergency medicine physicians, residents and medical students to perform peripheral ultrasound-guided nerve blocks. METHODS METHODS The study location was set in a community-based emergency medicine program in Pontiac, Michigan. Data was collected from N = 54 emergency medicine residents, physicians and medical students. Data was collected from two training sessions in November 2017 and January 2018. The training consisted of a 12-question pre-test, followed by five hours of hands on & didactic training, with a subsequent post-test containing the same questions. RESULTS RESULTS The authors compiled the data from both training sessions and found that the participants had an average correct percentage of 5.52 of 12 (46%) on the pre-test. After attending the training session, participants had an overall correct percentage of 9.24 of 12 (77%) on the post-test. This pre-to post-training increase of the mean scores was statistically significant, t (53) =-10.76 (p < 0.01), with an effect size (Cohen's d) of 1.82. Post hoc power calculations utilizing the d = 1.82 effect size revealed statistical power (1β) of 100%. CONCLUSIONS CONCLUSIONS The results of this QIPS evaluation project suggest that emergency physicians, residents and medical students may achieve an improved understanding of key ultrasound-guided nerve block material after a single five-hour session of hands-on training and didactics. Going forward, additional studies employing larger sample sizes that allow for outcome stratification by group (emergency physicians, residents, or medical students) along with relevant demographic variables (age, years in practice, etc.) in similar settings are needed to further verify these findings.
IntroductionWe proposed using compression sonography to observe the coaptation and collapse of the radial artery as a surrogate for automated cuff blood pressures (BP). We hypothesize that the pressure required to achieve coaptation and complete collapse of the artery would correlate to the diastolic and systolic BP, respectively. This pilot study was to assess the feasibility of ultrasound-guided radial artery compression (URAC) for BP measurement and compare patient comfort levels during automated cuff with URAC measurements.MethodsThis was a prospective cohort pilot study with a convenience sampling of 25 adult patients at a single urban emergency department. URAC pressure was measured, followed by cuff manometry on the same arm. A 100mL normal saline bag was connected to the Stryker pressure monitor and placed on the volar wrist. Pressure was applied to the bag with a linear transducer and the radial artery was observed for coaptation of the anterior and posterior walls and complete collapse. Pressures required for coaptation and collapse were recorded from the Stryker display. Patient level of comfort was also documented during the URAC method, with patients reporting either “more,” “same” or “less” comfort in comparison to automated cuffs. We analyzed data using intraclass correlation and paired t-tests. Interrater reliability was calculated using intraclass correlation.ResultsThe mean cuff systolic BP was 138.6 ± 22.1 mmHg compared to 126.9 ± 19.8 mmHg for the URAC systolic BP (p=0.02). For diastolic BP, there was no significant difference between the cuff BP and the URAC BP (83.7 ± 13.0 cuff vs. 86.5 ± 19.8 URAC, p=0.46). The intraclass correlation (ICC) for systolic BP was 0.48 (p=0.04) and 0.57 (p=0.02) for diastolic BP. The agreement between the two observers was 0.88 for identifying coaptation on ultrasound (diastolic pressure) and was 0.92 for identifying collapse (systolic pressure). Eighty percent (20/25) of subjects found the URAC method more comfortable than the cuff measurement, and the remainder found it the same (5/20).ConclusionThis pilot study showed statistically significant moderate correlation between automated cuff diastolic BP and URAC measurements for vessel coaptation. Additionally, most patients found the URAC method more comfortable than traditional cuff measurements. Compression ultrasonography shows promise as an alternative method of BP measurement, though future studies are needed.
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