Austin Gross

A Comparison of the Prehospital Motor Component of the Glasgow Coma Scale (mGCS) to the Prehospital Total GCS (tGCS) as a Prehospital Risk Adjustment Measure for Trauma Patients

Abstract Objective. This study compared the prehospital motor component subscale of the Glasgow Coma Scale (mGCS) to the prehospital total GCS (tGCS) score for its ability to predict the need for intubation, survival to hospital discharge, and neurosurgical intervention in trauma patients. Methods. This is a retrospective analysis of an urban level 1 trauma registry. All trauma patients presenting to the trauma center emergency department via emergency medical services from July 2008 through June 2010 were included. The area under the receiver operating characteristics curve (AUC) analysis was used to compare the predictive ability of the prehospital mGCS to tGCS for three outcomes: intubation, survival to hospital discharge, and neurosurgical intervention. Two subgroups (patients with injury severity score [ISS] ≥ 16 and traumatic brain injury [TBI] [head abbreviated injury score (AIS) ≥ 3]) were analyzed. An a priori statistically significant absolute difference of 0.050 in AUC between mGCS and tGCS for these clinical outcomes was used as a clinically significant difference. Multiple imputation was used for missing prehospital GCS data. Results. There were 9,816 patients, of which 4% were intubated, 3.8% had neurosurgical intervention, and 97.1% survived to hospital discharge. The absolute difference in AUC (prehospital tGCS minus mGCS) for all cases was statistically significant for all three outcomes but did not reach the clinical significance threshold: survival = 0.010 (95% CI: 0.002–0.018), intubation = 0.018 (95% CI: 0.011–0.024), and neurosurgical intervention = 0.019 (95% CI: 0.007–0.029). The difference in AUC between tGCS and mGCS for the subgroups ISS ≥ 16 (n = 1,151) and TBI (n = 1,165) did not reach clinical significance for the three outcomes. The discriminatory ability of the prehospital mGCS was good for survival (AUC: all patients = 0.89, ISS ≥ 16 = 0.84, traumatic brain injury = 0.86) excellent for intubation (AUC: all patients = 0.95, ISS ≥ 16 = 0.91, traumatic brain injury = 0.91), and poor for neurosurgical intervention (AUC: all patients = 0.67, ISS ≥ 16 = 0.57, traumatic brain injury = 0.60). Conclusion. The prehospital mGCS appears have good discriminatory power and is equivalent to the prehospital tGCS for predicting intubation and survival to hospital discharge in this trauma population as a whole, those with ISS ≥ 16, or TBI.

Ability of emergency physicians with advanced echocardiographic experience at a single center to identify complex echocardiographic abnormalities

OBJECTIVES To determine the ability of emergency physicians to detect complex abnormalities on point-of-care (POC) echocardiograms. METHODS Single-blinded, nonrandomized, cross-sectional study. Twenty-five different emergency medicine clinical scenarios (video clips and digital images) covering a variety of echocardiographic abnormalities were presented to a group of emergency physician sonologists. The echocardiographic abnormalities included right ventricular dysfunction, left ventricular systolic dysfunction, diastolic dysfunction, regional wall motion abnormalities, Doppler abnormalities of pericardial tamponade physiology, left ventricular hypertrophy, hypertrophic cardiomyopathy, and aortic abnormalities. All emergency physician sonologists were blinded to the study hypothesis. They reviewed echocardiography video clips and images individually, and their interpretations were compared with the criterion standard (expert echocardiographer interpretations). RESULTS A total of 200 echocardiography studies (video clips and images) were independently reviewed by 8 emergency physician sonologists with varying POC echocardiography experiences. Emergency physicians accurately identified left ventricular systolic dysfunction 94% of the time, diastolic dysfunction (100%), and right ventricular dysfunction 80% of the time. Regional wall motion abnormalities were detected only 50% of the time. Doppler echocardiographic abnormalities of pericardial tamponade physiology were accurately identified 57% of the time. Emergency physicians who performed more than 250 POC echocardiograms were found to be more accurate in identifying complex echocardiographic abnormalities. CONCLUSIONS Our study results suggest that with increased experience, emergency physicians can accurately identify most of complex echocardiographic abnormalities.

Implementation of a novel point-of-care ultrasound billing and reimbursement program: fiscal impact

OBJECTIVES The aim of this study was to determine the fiscal impact of implementation of a novel emergency department (ED) point-of-care (POC) ultrasound billing and reimbursement program. METHODS This was a single-center retrospective study at an academic medical center. A novel POC ultrasound billing protocol was implemented using the Q-path Web-based image archival system. Patient care ultrasound examination reports were completed and signed electronically online by faculty using Q-path. A notification was automatically sent to ED coders from Q-path to bill the scans. ED coders billed the professional fees for scans on a daily basis and also notified hospital coders to bill for facility fees. A fiscal analysis was performed at the end of the year after implementing the new billing protocol, and a before-and-after comparison was conducted. RESULTS After implementation of the new billing program, there was a 45% increase in the ED faculty participation in billing for patient care examinations (30%-75%). The number of ultrasound examinations billed increased 5.1-fold (4449 vs 857) during the post implementation period. The total units billed increased from previous year for professional services to 4157 from 649 and facility services to 3266 from 516. During the post implementation period, the facility fees revenue increased 7-fold and professional fees revenue increased 6.34-fold. After deducting the capital costs and ongoing operational costs from approximate collections, the net profits gained by our ED ultrasound program was approximately

Can Emergency Physicians Perform Common Carotid Doppler Flow Measurements to Assess Volume Responsiveness

350000. CONCLUSIONS Within 1 year of inception, our novel POC ultrasound billing and reimbursement program generated significant revenue through ultrasound billing.

Sonographic Inferior Vena Cava Measurements to Assess Hydration Status in College Football Players During Preseason Camp

Introduction Common carotid flow measurements may be clinically useful to determine volume responsiveness. The objective of this study was to assess the ability of emergency physicians (EP) to obtain sonographic images and measurements of the common carotid artery velocity time integral (VTi) for potential use in assessing volume responsiveness in the clinical setting. Methods In this prospective observational study, we showed a five-minute instructional video demonstrating a technique to obtain common carotid ultrasound images and measure the common carotid VTi to emergency medicine (EM) residents. Participants were then asked to image the common carotid artery and obtain VTi measurements. Expert sonographers observed participants imaging in real time and recorded their performance on nine performance measures. An expert sonographer graded image quality. Participants were timed and answered questions regarding ease of examination and their confidence in obtaining the images. Results A total of 30 EM residents participated in this study and each performed the examination twice. Average time required to complete one examination was 2.9 minutes (95% CI [2.4–3.4 min]). Participants successfully completed all performance measures greater than 75% of the time, with the exception of obtaining measurements during systole, which was completed in 65% of examinations. Median resident overall confidence in accurately performing carotid VTi measurements was 3 (on a scale of 1 [not confident] to 5 [confident]). Conclusion EM residents at our institution learned the technique for obtaining common carotid artery Doppler flow measurements after viewing a brief instructional video. When assessed at performing this examination, they completed several performance measures with greater than 75% success. No differences were found between novice and experienced groups.

Focused assessment with sonography for trauma examination: Reexamining the importance of the left upper quadrant view

The purpose of this study was to determine whether sonographic measurement of the inferior vena cava (IVC) in college football players during preseason camp is a reliable way to detect and monitor dehydration. Our primary hypothesis was that IVC diameter measurements, the postpractice caval index, and expiratory diameter were significantly related to percent weight loss after a preseason football practice.

An analysis of lawsuits relating to emergency physician performed point-of-care ultrasound

The purpose of this study was to determine the frequency and predominant location of isolated free fluid in the left upper quadrant (LUQ) on focused assessment with sonography for trauma (FAST) examinations of adult patients with trauma presenting to the emergency department.

Theme-based teaching of point-of-care ultrasound in undergraduate medical education

Patients and methods The WESTLAW database is a repository of case law, state and federal statues, public records and other information sources used by legal professionals. The database was retrospectively reviewed for cases involving emergency physicians and US exams which fall under the ACEP core emergency US applications from January 2008 to August 2012. Cases were reviewed by emergency physicians with advanced US training. Cases were included if an emergency physician was named, the patient encounter was in the ED, the interpretation or failure to perform US was a central issue and the application was within the ACEP core applications.