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1.  Quality of Care for Acute Myocardial Infarction in 58 U.S. Emergency Departments 
Objectives
The objectives of this study were to determine concordance of emergency department (ED) management of acute myocardial infarction (AMI) with guideline recommendations and to identify ED and patient characteristics predictive of higher guideline concordance.
Methods
The authors conducted a chart review study of ED AMI care as part of the National Emergency Department Safety Study (NEDSS). Using a primary hospital discharge diagnosis of AMI (International Classification of Diseases, Ninth Revision, Clinical Modification [ICD-9-CM], codes 410.XX), a random sample of ED visits for AMI in 58 urban EDs across 20 U.S. states between 2003 and 2006 were identified. Concordance with American College of Cardiology/American Heart Association (ACC/AHA) guideline recommendations was evaluated using five individual quality measures and a composite concordance score. Concordance scores were calculated as the percentage of eligible patients who received guidelines-recommended care. These percentage scores were rescaled from 0 to 100, with 100 indicating perfect concordance.
Results
The cohort consisted of 3,819 subjects; their median age was 65 years, and 62% were men. The mean (± standard deviation [SD]) ED composite concordance score was 61 ± 8), with a broad range of values (42 to 84). Except for aspirin use (mean concordance, 82), ED concordance scores were low (beta-blocker use, 56; timely electrocardiogram [ECG], 41; timely fibrinolytic therapy, 26; timely ED disposition for primary percutaneous coronary intervention [PCI] candidates, 43). In multivariable analyses, older age (beta-coefficient per 10-year increase, −1.5; 95% confidence interval [CI] = −2.4 to −0.5) and southern EDs (beta-coefficient, −5.2; 95% CI = −9.6 to −0.9) were associated with lower guideline concordance, whereas ST-segment elevation on initial ED ECG was associated with higher guideline concordance (beta-coefficient, 3.6; 95% CI = 1.5 to 5.7).
Conclusions
Overall ED concordance with guideline-recommended processes of care was low to moderate. Emergency physicians should continue to work with other stakeholders in AMI care, such as emergency medical services (EMS) and cardiologists, to develop strategies to improve care processes.
doi:10.1111/j.1553-2712.2010.00832.x
PMCID: PMC3547596  PMID: 20836774
acute myocardial infarction; emergency department; guidelines; quality of care
2.  A Survey of Workplace Violence Across 65 U.S. Emergency Departments 
Objectives
Workplace violence is a concerning issue. Healthcare workers represent a significant portion of the victims, especially those who work in the emergency department (ED). The objective of this study was to examine ED workplace violence and staff perceptions of physical safety.
Methods
Data were obtained from the National Emergency Department Safety Study (NEDSS), which surveyed staff across 69 U.S. EDs including physicians, residents, nurses, nurse practitioners, and physician assistants. The authors also conducted surveys of key informants (one from each site) including ED chairs, medical directors, nurse managers, and administrators. The main outcome measures included physical attacks against staff, frequency of guns or knives in the ED, and staff perceptions of physical safety.
Results
A total of 5,695 staff surveys were distributed, and 3,518 surveys from 65 sites were included in the final analysis. One-fourth of surveyed ED staff reported feeling safe sometimes, rarely, or never. Key informants at the sampled EDs reported a total of 3,461 physical attacks (median of 11 attacks per ED) over the 5-year period. Key informants at 20% of EDs reported that guns or knives were brought to the ED on a daily or weekly basis. In multivariate analysis, nurses were less likely to feel safe “most of the time” or “always” when compared to other surveyed staff.
Conclusions
This study showed that violence and weapons in the ED are common, and nurses were less likely to feel safe than other ED staff.
doi:10.1111/j.1553-2712.2008.00282.x
PMCID: PMC3530386  PMID: 18976337
emergency department; violence; weapons; safety; workplace
3.  National inventory of emergency departments in Singapore 
Background
Emergency departments (EDs) are the basic units of emergency care. We performed a national inventory of all Singapore EDs and describe their characteristics and capabilities.
Methods
Singapore EDs accessible to the general public 24/7 were surveyed using the National ED Inventories instrument ( http://www.emnet-nedi.org). ED staff members were asked about ED characteristics with reference to calendar year 2007.
Results
Fourteen EDs participated (100% response). All EDs were located in hospitals, and most (92%) were independent departments. One was a psychiatric ED; the rest were general EDs. Among general EDs, all had a contiguous layout, with medical and surgical care provided in one area. All but two EDs saw both adults and children; one ED was adult-only, and the other saw only children. Six were in the public sector and seven in private health-care institutions, with public EDs seeing the majority (78%) of ED patients. Each private ED had an annual patient census of <30,000. These EDs received 2% of ambulances and had an inpatient admission rate of 7%. Each public ED had an annual census of >60,000. They received 98% of ambulances and had an inpatient admission rate of 30%. Two public EDs reported being overcapacity; no private EDs did. For both public and private EDs, availability of consultant resources in EDs was high, while technological resources varied.
Conclusion
Characteristics and capabilities of Singapore EDs varied and were largely dependent on whether they are in public or private hospitals. This initial inventory establishes a benchmark to further monitor the development of emergency care in Singapore.
doi:10.1186/1865-1380-5-38
PMCID: PMC3518169  PMID: 23114079
International emergency medicine; Emergency department classification; Emergency department utilisation; Singapore; Health policy
4.  Quality of care for acute asthma in 63 US emergency departments 
Background
Little is known about the quality of acute asthma care in the emergency department (ED).
Objectives
We sought to determine the concordance of ED management of acute asthma with National Institutes of Health asthma guidelines, to identify ED characteristics predictive of higher guideline concordance, and to assess whether guideline concordance was associated with hospital admission.
Methods
We conducted a retrospective chart review study of acute asthma as part of the National Emergency Department Safety Study. Using a principal diagnosis of asthma, we identified ED visits for acute asthma in 63 urban EDs in 23 US states between 2003 and 2006. Concordance with guideline recommendations was evaluated by using item-by-item quality measures and composite concordance scores both at the patient and ED level. These scores ranged from 0 to 100, with 100 indicating perfect concordance.
Results
The cohort consisted of 4,053 subjects; their median age was 34 years, and 64% were women. The overall patient guideline concordance score was 67 (interquartile range, 63–83), and the ED concordance score was 71 (SD, 7). Multivariable analysis showed southern EDs were associated with lower ED concordance scores (β-coefficient, −8.2; 95% CI, −13.8 to −2.7) compared with northeastern EDs. After adjustment for the severity on ED presentation, patients who received all recommended treatments had a 46% reduction in the risk of hospital admission compared with others.
Conclusions
Concordance with treatment recommendations in the National Institutes of Health asthma guidelines was moderate. Significant variations in ED quality of asthma care were found, and geographic differences existed. Greater concordance with guideline-recommended treatments might reduce hospitalizations.
doi:10.1016/j.jaci.2008.10.051
PMCID: PMC3447084  PMID: 19070357
Acute asthma; emergency department; guidelines; quality of care
5.  Continued rise in the use of mid-level providers in US emergency departments, 1993–2009 
Background
Emergency department (ED) visits in the US have risen dramatically over the past 2 decades. In order to meet the growing demand, mid-level providers (MLPs) – both physician assistants (PAs) and nurse practitioners (NPs) – were introduced into emergency care. Our objective was to test the hypothesis that MLP usage in US EDs continues to rise.
Findings
We analyzed ED data from the National Hospital Ambulatory Medical Care Survey to identify trends in ED visits seen by MLPs. We also compared MLP-only visits (defined as visits where the patient was seen by a MLP without being seen by a physician) with those seen by physicians only. During 1993 to 2009, 8.4% (95%CI, 7.6–9.2%) of all US ED visits were seen by MLPs. These summary data include marked changes in MLP utilization: PA visits rose from 2.9% to 9.9%, while NP visits rose from 1.1% to 4.7% (both Ptrend < 0.001). Together, MLP visits accounted for almost 15% of 2009 ED visits and 40% of these were seen without involvement of a physician. Compared to physician only visits, those seen by MLPs only were less likely to arrive by ambulance (16% vs 6%) and be admitted (14% vs 3%).
Conclusions
Mid-level provider use is rising in US EDs. By 2009, approximately one in seven visits involved MLPs, with PAs managing twice as many visits as NPs. Although patients seen by MLPs only are generally of lower acuity, these nationally representative data confirm that MLP care extends beyond minor presentations.
doi:10.1186/1865-1380-5-21
PMCID: PMC3410759  PMID: 22621709
emergency department; workforce; mid-level providers; physician assistants; nurse practitioners; trends; NHAMCS
6.  Patient preferences for emergency department-initiated tobacco interventions: a multicenter cross-sectional study of current smokers 
Background
The emergency department (ED) visit provides a great opportunity to initiate interventions for smoking cessation. However, little is known about ED patient preferences for receiving smoking cessation interventions or correlates of interest in tobacco counseling.
Methods
ED patients at 10 US medical centers were surveyed about preferences for hypothetical smoking cessation interventions and specific counseling styles. Multivariable linear regression determined correlates of receptivity to bedside counseling.
Results
Three hundred seventy-five patients were enrolled; 46% smoked at least one pack of cigarettes per day, and 11% had a smoking-related diagnosis. Most participants (75%) reported interest in at least one intervention. Medications were the most popular (e.g., nicotine replacement therapy, 54%), followed by linkages to hotlines or other outpatient counseling (33-42%), then counseling during the ED visit (33%). Counseling styles rated most favorably involved individualized feedback (54%), avoidance skill-building (53%), and emphasis on autonomy (53%). In univariable analysis, age (r = 0.09), gender (average Likert score = 2.75 for men, 2.42 for women), education (average Likert score = 2.92 for non-high school graduates, 2.44 for high school graduates), and presence of smoking-related symptoms (r = 0.10) were significant at the p < 0.10 level and thus were retained for the final model. In multivariable linear regression, male gender, lower education, and smoking-related symptoms were independent correlates of increased receptivity to ED-based smoking counseling.
Conclusions
In this multicenter study, smokers reported receptivity to ED-initiated interventions. However, there was variability in individual preferences for intervention type and counseling styles. To be effective in reducing smoking among its patients, the ED should offer a range of tobacco intervention options.
doi:10.1186/1940-0640-7-4
PMCID: PMC3414814  PMID: 22966410
Smoking; Tobacco; Cigarettes; Emergency medicine; Counseling; Patient preference
7.  Development and Validation of a Risk-Adjustment Tool in Acute Asthma 
Health Services Research  2009;44(5p1):1701-1717.
Objective
To develop and prospectively validate a risk-adjustment tool in acute asthma.
Data Sources
Data were obtained from two large studies on acute asthma, the Multicenter Airway Research Collaboration (MARC) and the National Emergency Department Safety Study (NEDSS) cohorts. Both studies involved >60 emergency departments (EDs) and were performed during 1996–2001 and 2003–2006, respectively. Both included patients aged 18–54 years presenting to the ED with acute asthma.
Study Design
Retrospective cohort studies.
Data Collection
Clinical information was obtained from medical record review. The risk index was derived in the MARC cohort and then was prospectively validated in the NEDSS cohort.
Principle Findings
There were 3,515 patients in the derivation cohort and 3,986 in the validation cohort. The risk index included nine variables (age, sex, current smoker, ever admitted for asthma, ever intubated for asthma, duration of symptoms, respiratory rate, peak expiratory flow, and number of beta-agonist treatments) and showed satisfactory discrimination (area under the receiver operating characteristic curve, 0.75) and calibration (p=.30 for Hosmer–Lemeshow test) when applied to the validation cohort.
Conclusions
We developed and validated a novel risk-adjustment tool in acute asthma. This tool can be used for health care provider profiling to identify outliers for quality improvement purposes.
doi:10.1111/j.1475-6773.2009.00998.x
PMCID: PMC2754555  PMID: 19619246
Asthma; emergency department; hospital admission; profiling; risk adjustment
8.  Characterizing emergency departments to improve understanding of emergency care systems 
International emergency medicine aims to understand different systems of emergency care across the globe. To date, however, international emergency medicine lacks common descriptors that can encompass the wide variety of emergency care systems in different countries. The frequent use of general, system-wide indicators (e.g. the status of emergency medicine as a medical specialty or the presence of emergency medicine training programs) does not account for the diverse methods that contribute to the delivery of emergency care both within and between countries. Such indicators suggest that a uniform approach to the development and structure of emergency care is both feasible and desirable. One solution to this complex problem is to shift the focus of international studies away from system-wide characteristics of emergency care. We propose such an alternative methodology, in which studies would examine emergency department-specific characteristics to inventory the various methods by which emergency care is delivered. Such characteristics include: emergency department location, layout, time period open to patients, and patient type served. There are many more ways to describe emergency departments, but these characteristics are particularly suited to describe with common terms a wide range of sites. When combined, these four characteristics give a concise but detailed picture of how emergency care is delivered at a specific emergency department. This approach embraces the diversity of emergency care as well as the variety of individual emergency departments that deliver it, while still allowing for the aggregation of broad similarities that might help characterize a system of emergency care.
doi:10.1186/1865-1380-4-42
PMCID: PMC3250095  PMID: 21756328
9.  Food Security, Health, and Medication Expenditures of Emergency Department Patients 
The Journal of emergency medicine  2009;38(4):524-528.
Background
In the United States, 35 million people live in food-insecure households. Although food insecurity and hunger are undesirable in their own right, they also are potential precursors to nutritional, health, and developmental problems.
Study objectives
To examine the prevalence of household food insecurity and its association with health problems and medication expenditures among emergency department (ED) patients.
Methods
We conducted a cross-sectional study in four Boston-area EDs and enrolled consecutive adult patients during two 24-hour periods at each site. Food security status was measured using the validated 18-item US Household Food Security Survey Module.
Results
Overall, 66 (13%; 95%CI, 10–17%) of 520 ED patients screened positive for food insecurity. Among these 66 patients, 32 (48%; 95% CI, 36–61%) reported food insecurity with hunger. Patients from food-insecure households differed from food-secure patients with respect to sociodemographic factors. Food-insecure patients were more likely than food-secure patients to report a variety of chronic and mental health problems (all P<0.05), including obesity. Food-insecure patients, compared to food-secure patients, also were more likely (all P<0.001) to put off paying for medication to have money for food (27% vs. 4%, respectively), to take medication less often because they couldn’t afford more (32% vs. 4%, respectively), to report needing to make a choice between buying medication and food (27% vs. 2%, respectively), and to report getting sick because they couldn’t afford to take medication (27% vs. 1%, respectively).
Conclusions
ED patients from food-insecure households report more chronic and mental health problems, and difficulty purchasing medication.
doi:10.1016/j.jemermed.2008.11.027
PMCID: PMC2891517  PMID: 19272731
food insecurity; hunger; emergency department
10.  Variable Access to Immediate Bedside Ultrasound in the Emergency Department 
Objective:
Use of bedside emergency department (ED) ultrasound has become increasingly important for the clinical practice of emergency medicine (EM). We sought to evaluate differences in the availability of immediate bedside ultrasound based on basic ED characteristics and physician staffing.
Methods:
We surveyed ED directors in all 351 EDs in Colorado, Georgia, Massachusetts, and Oregon between January and April 2009. We assessed access to bedside ED ultrasound by the question: “Is bedside ultrasound available immediately in the ED?” ED characteristics included location, visit volume, admission rate, percent uninsured, total emergency physician full-time equivalents and proportion of EM board-certified (BC) or EM board-eligible (BE) physicians. Data analysis used chi-square tests and multivariable logistical regression to compare differences in access to bedside ED ultrasound by ED characteristics and staffing.
Results:
We received complete responses from 298 (85%) EDs. Immediate access to bedside ultrasound was available in 175 (59%) EDs. ED characteristics associated with access to bedside ultrasound were: location (39% for rural vs. 71% for urban, P<0.001); visit volume (34% for EDs with low volume [<1 patient/hour] vs. 79% for EDs with high volume [≥3 patients/hour], P<0.001); admission rate (39% for EDs with low [0–10%] admission rates vs. 84% for EDs with high [>20%] rates, P<0.001); and EM BC/BE physicians (26% for EDs with a low percentage [0–20%] vs.74% for EDs with a high percentage [≥80%], P<0.001).
Conclusion:
U.S. EDs differ significantly in their access to immediate bedside ultrasound. Smaller, rural EDs and those staffed by fewer EM BC/BE physicians more frequently lacked access to immediate bedside ultrasound in the ED.
PMCID: PMC3088382  PMID: 21691479
11.  Access to Emergency Care in the United States 
Annals of emergency medicine  2009;54(2):261-269.
Objective
Rapid access to emergency services is essential for emergency care sensitive conditions such as acute myocardial infarction, stroke, sepsis, and major trauma. We sought to determine US population access to an emergency department (ED).
Methods
The National Emergency Department Inventories (NEDI) – USA was used to identify the location, annual visit volume, and teaching status of all EDs in the US. EDs were categorized as 1) any ED, 2) by patient volume, and 3) by teaching status. Driving distances, driving speeds, and prehospital times were estimated using validated models and adjusted for population density. Access was determined by summing the population that could reach an ED within the specified time intervals.
Results
Overall, 71% of the US population has access to an ED within 30 minutes, and 98% has access within 60 minutes. Access to teaching hospitals was more limited, with 16% having access within 30 minutes and 44% within 60 minutes. Rural states had lower access to all types of EDs.
Conclusions
Although the majority of the US population has access to an ED, there are regional disparities in ED access, especially by rurality. Future efforts should measure the relationship between access to emergency services and outcomes for emergency care sensitive conditions. The development of a regionalized emergency care delivery system should be explored.
doi:10.1016/j.annemergmed.2008.11.016
PMCID: PMC2728684  PMID: 19201059
12.  Health information technology in US emergency departments 
Background
Information technology may improve patient safety, and is a focus of health care reform. A minority of emergency departments (EDs) in Massachusetts, and in academic EDs throughout the US, have electronic health records.
Aims
Assess health information technology adoption in a nationwide sample of EDs.
Methods
We surveyed 69 US EDs, asking site investigators about the availability of health information technology in 2005–2006. Using multiple linear regression, we compared adoption of technology by ED type (emergency medicine residency affiliation, annual census, US region) to assess generalizability of the findings.
Results
Sixty-eight EDs (99%) provided information about health information technology; 75% were affiliated with an emergency medicine residency, and all were urban. Most respondents had applications that simply relay information from one place to another, including patient tracking (74%); ordering tests (laboratory 57%, others 62%); and displaying prior visit notes (79%), ECGs (92%), laboratory (97%), and radiology (99%) results. A minority had more-advanced applications, which seek to modify human behavior, including medication ordering (38%), allergy warnings (19%), and medication cross-reaction warnings (13%), and a few used bar coding (20%). There were no significant differences in technology adoption by ED type.
Conclusions
This and prior studies suggest that some applications—particularly those relevant to modifying clinician behavior—are not widespread in US EDs, while others are. The reasons for this are unknown, but might include expense and unintended consequences. The fact that the emergency medicine community has not rushed to adopt certain applications presents challenges and opportunities.
doi:10.1007/s12245-010-0170-3
PMCID: PMC2926868  PMID: 21031043
Information technology; Electronic health records; Emergency department; Patient safety
13.  Implementation of crowding solutions from the American College of Emergency Physicians Task Force Report on Boarding 
Study Objective
We sought to measure the self-reported implementation of the crowding solutions outlined in the 2008 American College of Emergency Physicians (ACEP) Boarding Task Force report “Emergency Department Crowding: High-Impact Solutions.” We also tested the hypothesis that the self-reported crowding of emergency departments (EDs) was positively associated with the implementation of these solutions.
Methods
In early 2009, we mailed a survey to all medical or nursing directors from EDs in four US states asking for information regarding their EDs in 2008. Geographic information about the EDs was included in the analysis, along with survey responses about their ED capacity status and implementation of specific ACEP crowding solutions.
Results
A total of 284 of 351 EDs responded (81%). The majority of EDs were in urban areas (56%), non-teaching hospitals (93%), and not critical access hospitals (76%). The percentage of EDs “over capacity” ranged from 10–49% in each state. The mean number of crowding solutions used in EDs that were at or over capacity ranged from 3.6–4.6 in each state. EDs with visit volumes greater than or equal to three patients/hour were more likely to be over capacity than at capacity or at a good balance (46% vs. 31% and 15%, respectively). In terms of the use of high-impact crowding solutions, hospitals over capacity were more likely to utilize inpatient full capacity protocols (40% vs. 25% and 25%) but not inpatient discharge coordination (29% vs. 27% and 34%) or surgical schedule smoothing (31% vs. 28% and 32%). Hospitals over capacity were also more likely to have fast track units (44% vs. 32% and 16%) and physicians at triage (48% vs. 29% and 17%).
Conclusion
Less than half of EDs in each state reported operation above capacity. Implementation of some crowding solutions was more common in the above-capacity EDs, although these solutions were not consistently used across geographic locations and hospitals. Given that the majority of EDs were not over capacity, the implementation of these solutions does not seem to be universally necessary.
doi:10.1007/s12245-010-0216-6
PMCID: PMC3047841  PMID: 21373293
Emergency department crowding; ACEP; Crowding solutions

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