Faculty Bibliography

BACKGROUND:As more specialties have begun to use Point-of-Care Ultrasound (POCUS) in patient care, hospitals and healthcare systems have been investing increasing resources in POCUS infrastructure (training, equipment, and administration). Since each specialty uses different POCUS applications, healthcare systems seek to identify commonalities and differences between specialties to make thoughtful investments in POCUS infrastructure to support each specialty's use of POCUS while minimizing redundancies. Historically, past studies have focused on POCUS use in individual specialties, primarily emergency medicine and critical care, but comparative studies of different specialties are needed to guide investment in POCUS infrastructure and bolster POCUS implementation across healthcare systems. We conducted a cross-sectional survey of all Veterans Affairs (VA) medical centers in the United States and compared data from 5 different specialties on current usage, training needs, and barriers to POCUS implementation. RESULTS:Data were collected from facility chiefs of staff (n = 130; 100% response rate) and chiefs of emergency medicine (n = 101; 92% response rate), critical care (n = 93; 83% response rate), hospital medicine (n = 105; 90% response rate), anesthesiology (n = 96; 77% response rate), and surgery (n = 104; 95% response rate). All specialties surveyed reported current POCUS use (surgery 54%, hospital medicine 64%, anesthesiology 83%, emergency medicine 90%, and critical care 93%) but more importantly, a greater desire for training was seen. Procedural POCUS applications were most often used by all specialties, despite decreased procedural POCUS use since 2015 for all specialties except critical care. Diagnostic POCUS use generally increased from 2015 to 2020, although use of specific POCUS applications varied significantly between specialties. Barriers limiting POCUS use included lack of training (53-80%), access to ultrasound equipment (25-57%), and POCUS infrastructure (36-65%). CONCLUSIONS:From 2015 to 2020, POCUS use increased significantly in emergency medicine, critical care, internal medicine, anesthesiology, and surgery, although use of specific applications varied significantly between specialties. Lack of training and POCUS infrastructure were common barriers to POCUS use across specialties. Desire for training exceeded current use for several POCUS applications. These findings can guide implementation and standardization of  POCUS use  in hospitals and healthcare systems.

BACKGROUND/UNASSIGNED:Advanced critical care echocardiography comprises a specific set of qualitative and quantitative point-of-care echocardiography skills, including a reliable, noninvasive method to measure cardiac output. This technique requires echocardiographic measurement of left ventricular outflow tract (LVOT) diameter and LVOT velocity time integral (VTI). Although there is a demand among critical care fellows to learn these advanced techniques, there are no data describing the acquisition of mastery in these skills. OBJECTIVE/UNASSIGNED:This pilot study aims to describe the accuracy of echocardiographic measurement of LVOT diameter and LVOT VTI obtained by critical care fellows after an educational intervention, as well as to enhance validation evidence for an image scoring assessment that is applicable to these measurements. METHODS/UNASSIGNED:We implemented a brief mastery learning intervention to teach the measurement of LVOT diameter and VTI. Fellow measurements of these parameters, along with the corresponding echocardiographic images, were compared with a gold standard of measurements obtained by professional echocardiography technicians and interpreted by cardiologists. RESULTS/UNASSIGNED: = 0.004), with a mean percent difference of 8.05 ± 7.0%. The sensitivity for fellows to detect an abnormal LVOT VTI was 91%, with a specificity of 43%. CONCLUSION/UNASSIGNED:Critical care fellow measurement of LVOT VTI and LVOT diameter demonstrated strong and moderate positive correlations with cardiologist-reported values, respectively, with acceptable clinical agreement. However, interrater reliability and percent differences showed room for improvement. Education in these advanced skills is resource intensive, and additional research is needed to determine the most effective approach to training fellows.

BACKGROUND:by Philips Healthcare). A multi-specialty group of physician POCUS experts (n = 35) acquired three standard ultrasound views (abdominal right upper quadrant, cardiac apical 4-chamber, and superficial neck and lung views) in random order on the same standardized patients and rated the image quality. Afterward, a final survey of the overall ease of use, image quality, and satisfaction of each handheld was completed. RESULTS:. The 5 most desirable characteristics of handhelds were image quality, ease of use, portability, probe size, and battery life. Ultimately, all 6 handhelds had notable advantages and disadvantages, with no single device having all desired qualities or features. CONCLUSIONS:was rated highest for overall ease of use and was the most preferred handheld for purchase by POCUS experts.

Background: Readmission rates for heart failure remain high, and affordable technology for early detection of heart failure decompensation in the home environment is needed. Lung ultrasound has been shown to be a sensitive tool to detect pulmonary congestion due to heart failure, and monitoring patients in their home environment with lung ultrasound could help to prevent hospital admissions. The aim of this project was to investigate whether patient-performed tele-guided ultrasound in the home environment using an ultraportable device is feasible.Affiliations: Journal instruction requires a country for affiliations; however, these are missing in affiliations [1, 2]. Please verify if the provided country are correct and amend if necessary.Correct Methods: Stable ambulatory patients with heart failure received a handheld ultrasound probe connected to a smart phone or tablet. Instructions for setup were given in person during a clinic visit or over the phone. During each ultrasound session, patients obtained six ultrasound clips from the anterior and lateral chest with verbal and visual tele-guidance from an ultrasound trained clinician. Patients also reported their weight and degree of dyspnea, graded on a 5-point scale. Two independent reviewers graded the ultrasound clips based on the visibility of the pleural line and A or B lines. Results: Eight stable heart failure patients each performed 10"“12 lung ultrasound examinations at home under remote guidance within a 1-month period. There were no major technical difficulties. A total of 89 ultrasound sessions resulted in 534 clips of which 88% (reviewer 1) and 84% (reviewer 2) were interpretable. 91% of ultrasound sessions produced interpretable clips bilaterally from the lateral chest area, which is most sensitive for the detection of pulmonary congestion. The average time to complete an ultrasound session was 5 min with even shorter recording times for the last session. All patients were clinically stable during the study period and no false positive B-lines were observed. Conclusions: In this feasibility study, patients were able to produce interpretable lung ultrasound exams in more than 90% of remotely supervised sessions in their home environment. Larger studies are needed to determine whether remotely guided lung ultrasound could be useful to detect heart failure decompensation early in the home environment.

BACKGROUND:Point-of-care ultrasound (POCUS) can aid geriatricians in caring for complex, older patients. Currently, there is limited literature on POCUS use by geriatricians. We conducted a national survey to assess current POCUS use, training desired, and barriers among Geriatrics and Extended Care ("geriatric") clinics at Veterans Affairs Medical Centers (VAMCs). METHODS:We conducted a prospective observational study of all VAMCs between August 2019 and March 2020 using a web-based survey sent to all VAMC Chiefs of Staff and Chiefs of geriatric clinics. RESULTS:All Chiefs of Staff (n=130) completed the survey (100% response rate). Chiefs of geriatric clinics ("chiefs") at 76 VAMCs were surveyed and 52 completed the survey (68% response rate). Geriatric clinics were located throughout the United States, mostly at high-complexity, urban VAMCs. Only 15% of chiefs responded that there was some POCUS usage in their geriatric clinic, but more than 60% of chiefs would support the implementation of POCUS use. The most common POCUS applications used in geriatric clinics were the evaluation of the bladder and urinary obstruction. Barriers to POCUS use included a lack of trained providers (56%), ultrasound equipment (50%), and funding for training (35%). Additionally, chiefs reported time utilization, clinical indications, and low patient census as barriers. CONCLUSIONS:POCUS has several potential applications for clinicians caring for geriatric patients. Though only 15% of geriatric clinics at VAMCs currently use POCUS, most geriatric chiefs would support implementing POCUS use as a diagnostic tool. The greatest barriers to POCUS implementation in geriatric clinics were a lack of training and ultrasound equipment. Addressing these barriers systematically can facilitate implementation of POCUS use into practice and permit assessment of the impact of POCUS on geriatric care in the future.

BACKGROUND:More primary care providers (PCPs) have begun to embrace the use of point-of-care ultrasound (POCUS), but little is known about how PCPs are currently using POCUS and what barriers exist. In this prospective study, the largest systematic survey of POCUS use among PCPs in the VA Healthcare System, we assessed the current use, barriers to use, program management, and training needs for POCUS in primary care. METHODS:We conducted a prospective observational study of all VA Medical Centers (VAMCs) between August 2019 and March 2020 using a web-based survey sent to all VAMC Chiefs of Staff and Chiefs of primary care clinics (PCCs). RESULTS:Chiefs of PCCs at 105 VAMCs completed the survey (82% response rate). Only 13% of PCCs currently use POCUS, and the most common applications used are bladder and musculoskeletal ultrasound. Desire for POCUS training exceeded current use, but lack of trained providers (78%), ultrasound equipment (66%), and funding for training (41%) were common barriers. Program infrastructure to support POCUS use was uncommon, and only 9% of VAMCs had local policies related to POCUS. Most PCC chiefs (64%) would support POCUS training. CONCLUSIONS:Current use of POCUS in primary care is low despite the recent growth of POCUS training in Internal Medicine residency programs. Investment in POCUS training and program infrastructure is needed to expand POCUS use in primary care and ensure adequate supervision of trainees.

Traditionally measured with invasive methods or specialized equipment, stroke volume and cardiac output can be determined reliably with transthoracic echocardiography. This video guides the viewer in a step-by-step fashion through the technical aspects of Doppler echocardiographic assessment of cardiac output.