A priority dispatch system for emergency medical services

A decision tree priority dispatch system for emergency medical services (EMS) was developed and implemented in Atlanta and Fulton County, Georgia. The dispatch system shortened the average response time from 14.2 minutes to 10.4 minutes for the 30% of patients deemed most urgent (P less than or equal to .05); resulted in a significant increase in the use of advanced life support units for this group (P less than or equal to .02); decreased the number of calls that required a backup ambulance service; and significantly increased conformity to national EMS response time standards for critically ill and injured patients (P less than or equal to .0009). Due to dispatch error, 0.3% of calls were dispatched as least severe but subsequently were found to be most urgent.     

Practice guidelines and performance measures in emergency medical services for children

Practice guidelines and performance measures are critical elements of an effective quality improvement process for emergency medical services for children (EMSC). Practice guidelines address the clinical management of individual patients, and performance measures assess the quality of care delivered to a population. The public and private sectors have invested considerable resources in developing practice guidelines and performance measures to improve the quality of health care services. As organizations continue development efforts, health care professionals who are actively involved in emergency care must collaborate to develop guidelines that address the unique physiologic, psychologic, and cultural needs of children. The Emergency Medical Services for Children Managed Care Task Force recommended the development of a series of white papers to focus on issues related to practice guidelines and performance measures in EMSC. The Maternal and Child Health Bureau, Health Resources and Services Administration, the National Highway Traffic Safety Administration, and the Robert Wood Johnson Foundation jointly sponsored the project. The paper was developed by a panel selected from a pool of experts in managed care, quality improvement, and emergency medical services. After a review of the literature, the panelists met to discuss critical issues related to practice guidelines and performance measures in EMSC. The panelists developed recommendations that can serve as resources for managed care organizations, health care providers, professional associations, and governmental policy makers. The panel recognized the lack of nationally recognized pediatric emergency care guidelines and performance measures and called for immediate action in these areas.     

The national disaster medical system: A concept in large-scale emergency medical care

The national disaster medical system is a new program established in 1981 to develop and implement a national policy to improve emergency preparedness for large-scale disasters. This article describes the background and purpose of this activity and delineates the elements of the system, which include a rapid medical response, patient evacuation, and definitive medical care. The program is designed to involve resources at the federal, state, and community levels. This article describes how local communities may participate in this initiative.     

A computer-assisted quality assurance system for an emergency medical service

A busy urban emergency medical service answering more than 50,000 calls each year developed a plan for quality assurance using a computer-assisted model designed to employ a full-time quality assurance officer whose work was supplemented with computer evaluation of EMS field reports. The development of standardized reporting formats, protocols and computer programs enabled a significant improvement in detection of errors of documentation and patient care. Investigated cases rose dramatically in the month following implementation of the system, from five patient care errors per month to 35 (P less than .05), and from 50 documentation errors to 265 per month (P less than .05). Our experience indicates that computer-assisted evaluation of field performance, as judged by prehospital records, is a useful tool to ensure standards in patient care and EMS recordkeeping.     

Limiting resuscitation: emerging policy in the emergency medical system

Patients, families, and physicians frequently decide that a hospitalized patient will forgo cardiopulmonary resuscitation and document this decision with a do-not-resuscitate (DNR) order. In community settings (home, nursing home, hospice), these orders may conflict with paramedics' standing orders to provide cardiopulmonary resuscitation whenever it is medically indicated. We did a nationwide telephone survey of state offices for coordination of emergency medical services (EMS) to see how the states deal with this potential conflict. We identified eight states that have specific policies enabling EMS personnel to accept DNR orders for patients being transported by ambulance. State officials identified administrative complexities and legal concerns as the primary barriers to enacting prehospitalization DNR policies. We also identified 21 local EMS systems that have developed policies for accepting orders to withhold life-sustaining treatment. Four types of policy models, characterized according to procedure for validating DNR orders and telephone accessing the EMS system, show that regulatory reform can address policy barriers in the absence of enabling legislation.     

Direct costs of emergency medical care: a diagnosis-based case-mix classification system

STUDY OBJECTIVE: To develop a diagnosis-based case mix classification system for emergency department patient visits based on direct costs of care designed for an outpatient setting. DESIGN: Prospective provider time study with collection of financial data from each hospital's accounts receivable system and medical information, including discharge diagnosis, from hospital medical records. SETTING: Three community hospital EDs in Los Angeles County during selected times in 1984. MEASUREMENTS AND MAIN RESULTS: Only direct costs of care were included: health care provider time, ED management and clerical personnel excluding registration, nonlabor ED expense including supplies, and ancillary hospital services. Indirect costs for hospitals and physicians, including depreciation and amortization, debt service, utilities, malpractice insurance, administration, billing, registration, and medical records were not included. Costs were derived by valuing provider time based on a formula using annual income or salary and fringe benefits, productivity and direct care factors, and using hospital direct cost to charge ratios. Physician costs were based on a national study of emergency physician income and excluded practice costs. Patients were classified into one of 216 emergency department groups (EDGs) on the basis of the discharge diagnosis, patient disposition, age, and the presence of a limited number of physician procedures. Total mean direct costs ranged from $23 for follow-up visit to $936 for trauma, admitted, with critical care procedure. The mean total direct costs for the 16,771 nonadmitted patients was $69. Of this, 34% was for ED costs, 45% was for ancillary service costs, and 21% was for physician costs. The mean total direct costs for the 1,955 admitted patients was $259. Of this, 23% was for ED costs, 63% was for ancillary service costs, and 14% was for physician costs. Laboratory and radiographic services accounted for approximately 85% of all ancillary service costs and 38% of total direct costs for nonadmitted patients versus 80% of ancillary service costs and 51% of total direct costs for admitted patients. CONCLUSION: We have developed a diagnosis-based case mix classification system for ED patient visits based on direct costs of care designed for an outpatient setting which, unlike diagnosis-related groups, includes the measurement of time-based cost for physician and nonphysician services. This classification system helps to define direct costs of hospital and physician emergency services by type of patient.     

The advanced life support base hospital audit for medical control in an emergency medical services system

A large California county uses an audit of its advanced life support (ALS) base hospitals to maintain medical control of prehospital care and to improve the county emergency medical services. The audit is a rigorous, semi-annual evaluation of ALS base hospital performance using objective, written criteria. The county emergency medical service district and the base hospitals have benefited from the data that have resulted from the audits. The base hospital audit is an excellent method of assessing medical control in an emergency medical services system.     

Misplaced endotracheal tubes by paramedics in an urban emergency medical services system

STUDY OBJECTIVE: To determine the incidence of unrecognized, misplaced endotracheal tubes inserted by paramedics in a large urban, decentralized emergency medical services (EMS) system. METHODS: We conducted a prospective, observational study of patients intubated in the field by paramedics before emergency department arrival. During an 8-month period, emergency physicians assessed tube position at ED arrival using a combination of auscultation, end-tidal carbon dioxide (ETCO(2)) monitoring, and direct laryngoscopy. RESULTS: A total of 108 intubated patients were studied. On arrival in the ED, 25% (27/108) of patients were found to have improperly placed endotracheal tubes. Of the misplaced tubes, 67% (18/27) were found to be in the esophagus, whereas in 33% (9/27), the tip of the tube was found to be in the hypopharynx, above the vocal cords. Of the patients with misplaced tubes noted in the hypopharynx, 33% (3/9) died while in the ED. For the patients found to have tubes in the hypopharynx, 56% (5/9) had evidence of ETCO(2) on ED arrival. For the patients found to have esophageal tube placement on ED arrival, 56% (10/18) died in the ED. Esophageal intubation was associated with an absence of expired CO(2) (17/18, 94%) on ED arrival. The single patient in this subset with a recordable ETCO(2) had been nasotracheally intubated with the tip of the endotracheal tube noted in the esophagus while spontaneous respirations were present. On patient arrival to the ED, 63% (68/108) of the patients had direct laryngoscopy in addition to ETCO(2) determination. All patients had ETCO(2) evaluation performed on arrival. All patients in whom an absence of ETCO(2) was demonstrated on patient arrival underwent direct laryngoscopy. In cases in which direct laryngoscopy was not performed, the attending physician documented the ETCO(2) in conjunction with the presence of bilateral breath sounds. CONCLUSION: The incidence of out-of-hospital, unrecognized, misplaced endotracheal tubes in our community is excessively high and may be reflective of the incidence occurring in other communities. Data from other communities are needed to clarify the scope of this alarming issue.     

A comprehensive framework for determining the cost of an emergency medical services system

To determine the cost of an emergency medical services (EMS) system, researchers, policymakers, and EMS providers need a framework with which to identify the components of the system that must be included in any cost calculations. Such a framework will allow for cost comparisons across studies, communities, and interventions. The objective of this article is to present an EMS cost framework. This framework was developed by a consensus panel after analysis of existing peer-reviewed and non-peer-reviewed resources, as well as independent expert input. The components of the framework include administrative overhead, bystander response, communications, equipment, human resources, information systems, medical oversight, physical plant, training, and vehicles. There is no hierarchical rank to these components; they are all necessary. Within each component, there are subcomponents that must be considered. This framework can be used to standardize the calculation of EMS system costs to a community. Standardizing the calculation of EMS cost will allow for comparisons of costs between studies, communities, and interventions.     

Therapeutic intervention scoring as a measure of performance in a helicopter emergency medical services program

Helicopter emergency medical services (HEMS), which are both expensive and resource intensive, lack objective measures for system evaluation. We computed the Therapeutic Intervention Scoring System (TISS) score for all patients during six consecutive months of service in a HEMS program to assess the value of this score for measuring the performance of the program. The TISS assigns values ranging from 1 to 4 for 57 medical and surgical interventions to measure the intensity of care during a 24-hour period. The TISS was recorded for 203 patients beginning at the time HEMS transport was requested. These flights also were classified as appropriate or inappropriate, given the information available, when HEMS care was initiated and days later when diagnostic evaluation was complete. Classification was done on the basis of whether the following criteria (potentially) ensure patient survival or improve outcome: speed of transport, presence of a medically skilled flight team, or the helicopter's ability to overcome hostile environmental conditions. The mean TISS score for all patients was 21.7. One hundred thirty-two of 203 flights (65%) were thought to be medically necessary, both at the time HEMS was requested and later (mean TISS, 28.1; analysis of variance, P less than .001). Thirty-four flights (17%) were thought to be appropriate using the information available at flight time, but not after the diagnostic workup was completed (mean TISS, 10.0). Thirty-six patients (18%) did not appear to require helicopter transport at any time, and had a mean TISS of 9.0. We conclude that TISS is a useful, objective measure of the performance of a HEMS program, and it should be tested in other HEMS programs.