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PubMed2005

The importance of evidence-based disaster planning.

Disaster planning is only as good as the assumptions on which it is based. However, some of these assumptions are derived from a conventional wisdom that is at variance with empirical field disaster research studies. Knowledge of disaster research findings might help planners avoid common disaster management pitfalls, thereby improving disaster response planning. To illustrate the point, this article examines several common assumptions about disasters, compares them with research findings, and discusses the implications for planning. These assumptions are that: 1. Dispatchers will hear of the disaster and send emergency response units to the scene. 2. Trained emergency personnel will carry out field search and rescue. 3. Trained emergency medical services personnel will carry out triage, provide first aid or stabilizing medical care, and--if necessary--decontaminate casualties before patient transport. 4. Casualties will be transported to hospitals by ambulance. 5. Casualties will be transported to hospitals appropriate for their needs and in such a manner that no hospitals receive a disproportionate number. 6. Authorities at the scene will ensure that area hospitals are promptly notified of the disaster and the numbers, types, and severities of casualties to be transported to them. 7. The most serious casualties will be the first to be transported to hospitals. The current status and limitations of disaster research are discussed, and potential interventions to response problems are offered that may be of help to planners and practitioners and that may serve as hypotheses for future research.

Disaster Planning↗
PubMed2004

Ambulance alerting of paediatric emergencies to a general hospital.

BACKGROUND: There are at present only a small number of dedicated paediatric emergency departments in the UK. Severely ill and injured children are often taken by ambulance to the nearest general hospital. Efforts have been made to provide better care for these sickest children pending the establishment of dedicated paediatric emergency services within general emergency departments by 2004 [Royal College of Paediatrics and Child Health; Accident and Emergency Services for Children-Report of a Multidisciplinary Working Party, June 1999]. To learn more of the staffing implications for the establishment of dedicated paediatric emergency units within the general hospital, 30 months of paediatric alert call data are presented. METHODS: A prospective review of paediatric alert calls over 30 months, (from January 1999 until June 2001). All alert calls from the ambulance service to a large urban emergency department were recorded on a specific form. Data from these forms is presented. RESULTS: There were 1754 alert calls of all types during this 30-month period, of which 153 (9%) were for patients under the age of 16 (mean 1.2 each week). Of these, 102 (66%) were for medical conditions and 51 (34%) were for trauma. The mean estimated time of arrival from the time of the alert call was 6 min. The majority of both medical and trauma paediatric alert calls occur in the afternoon and progress well into the night. The 51.6% of paediatric medical alert calls and 64.4% of paediatric trauma alert calls occur 'out of normal hours'. There was little reduction in the frequency of alert calls at the weekend. There were no paediatric trauma alert calls between 2 a.m. and 10 a.m., although medical paediatric alert calls continued throughout the night. CONCLUSIONS: Resident senior trauma personnel to manage injured children should be provided until at least midnight. Hospitals that maintain a facility for the reception of sick children must be able to provide a rapid response to paediatric medical emergencies on a 24 h basis. Guidelines for alert calls for ambulance crews are required.

Adolescent↗
PubMed2005

Emergency call processing and survival from out-of-hospital ventricular fibrillation.

OBJECTIVES: Our aim was to report the effect of the emergency call processing in the dispatching centre on survival from out-of-hospital ventricular fibrillation (VF). METHODS: This retrospective cohort study was conducted in Helsinki Emergency Medical Services. All consecutive cases with out-of-hospital bystander witnessed VF of cardiac origin between 1 January 1997 and 31 December 2002 were included. Data were collected prospectively. Call processing times, call numbers per dispatcher and telephone guided cardiopulmonary resuscitation (CPR) were studied. Discharge alive from hospital was used as primary end point. RESULTS: The study population consisted of 373 cases. Cardiac arrest (CA) was recognised in 296 cases (79.4%) by the dispatcher. Survival to discharge was 37.2% (110/296) if CA was recognised and 28.6% (22/77) if it was not recognised (p=0.1550). When the dispatcher handled <4 VF calls during the study period survival to discharge was 22.1% (17/77) compared to 38.2% (50/131) and 39.4% (65/165) when the call volume was 4-9 or >9 (p=0.0227). The mean time to dispatch a first responding unit (FRU) was 77.1+/-44.3 s. Survival to discharge was 39.4% (65/165) when the FRU dispatching time was <60s and 32.2% (67/208) when dispatching took > or =60 s (p=0.1496). The mean time to CA recognition was 170.2+/-130.1 s. Spontaneous circulation was achieved more rapidly when the time was <150 s (p=0.0426), but there was no difference in survival to discharge. Telephone guided CPR instructions were given in 123 cases (35.5%). Survival to discharge was 43.1% (53/123) when CPR instructions were given and 31.7% (72/223) when they were not given (p=0.0453). CONCLUSIONS: We showed that low CA call numbers per dispatcher is associated with a decreased probability of survival. Giving telephone guided CPR instructions should be promoted as they influence the outcome. Further studies are needed to determine optimal call processing times.

Cardiopulmonary Resuscitation↗
PubMed2004

Patients with chest pain calling 9-1-1 or self-transporting to reach definitive care: which mode is quicker?

OBJECTIVE: We examined differences in transport times for patients with chest pain who used private transportation compared with patients who used emergency medical services (EMS) to reach definitive medical care. METHODS: This was a retrospective cohort study with data used from the Rapid Early Action for Coronary Treatment (REACT) trial conducted in 20 US cities. Elapsed time to care was examined through the use of (1) decision to seek care to initial care (emergency department [ED] arrival versus EMS arrival on scene [n=1209]); (2) decision to ED arrival (for both groups [n=2388]); (3) time to thrombolytic therapy once admitted to the ED (for both groups [n=309]); and (4) decision to seek care to thrombolytic therapy (n=276). Elapsed travel times were ranked within Zip Codes and submitted to a nested analysis of variance model to determine if elapsed times were different between modes of transport. RESULTS: Private transportation (35 minutes) resulted in faster ED arrival than using EMS (39 minutes, P =.0014). However, if one considers EMS treatment to be initial care, calling 9-1-1 (6 minutes) resulted in much quicker care than patients using private transportation to the ED (32 minutes, P <.001). Transport by EMS resulted in a shorter elapsed time to thrombolytic administration compared with patients using private transportation when considering ED "door-to-needle" time (32 vs 49 minutes, respectively [P <.001]) or time from decision to seek care until administration of thrombolytic therapy (75 vs 92 minutes, respectively, [P =.042]). CONCLUSIONS: Although private transportation results in a faster trip to the ED, quicker care is obtained with the use of EMS.

Adult↗
PubMed2003

A description of events associated with scene response by helicopter based medical retrieval teams.

The critical incident technique, used in critical care related medical specialities as a quality tool, may be applicable for evaluation of pre hospital care for injured patients. This study describes events documented by medically staffed retrieval teams that occurred during a scene response. Incidents were defined as events, which may have or did reduce the safety margin for the patient and/or retrieval team. Positive events were defined as events that actually did, or had the potential to, positively influence the outcome for the patient and/or retrieval team task.257 patient transport records had documented events (216 incidents, 41 positive), 35.6% had multiple events. Doctor's experience correlated with event documentation, R(2)=0.614 (P<0.0001). Incidents occurred mostly during team dispatch, prior to arrival and whilst team was at the scene. Equipment related incidents accounted for 24.3% of incidents. Winch incidents accounted for 12% of equipment incidents. Environmental factors were associated with 14.3% of incidents. In conclusion, the description of events associated with a scene response can be used for quality evaluation. Incidents and positive events should be evaluated. Future evaluation can benefit by incorporating detailed information from a broader cross-section of retrieval organisations.

Air Ambulances↗
PubMed1979

Roadside medical care in Cambridgeshire.

The Mid-Anglia General Practitioner Accident Service (MAGPAS), established in 1972 to provide medical care at accident sites before the arrival of the ambulance and to assist ambulance crews with the severely injured, is discussed. Analysis of accident report forms returned by MAGPAS doctors is given.

Accidents↗
PubMed1991

Disaster management. Lessons learned.

Our experiences have taught us that practice makes perfect and that it probably is unreasonable to expect everything to be orderly, sane, and appropriate during disaster management. The best we can hope for probably is controlled chaos. We do believe that we have generated an improved plan, that the plan is known, and that it is being revised continuously. We can no longer rely on our goodwill and good intentions to manage mass casualties in a disaster. There are too many factors that can reduce our ability to provide medical care in this situation. Hospital planning is essential. The hospital should be represented on the emergency preparedness committee so it is knowledgeable about the various plans throughout the city. Each plan must be practiced and critiqued to identify potential problems. Hospital staff must be kept current on the various plans to understand the communication, authority, responsibility, security, and medical control for each plan. We have instituted a video program outlining the various tasks for each hospital department for each disaster plan. This format allows the personnel in these departments to review their responsibilities continually in a concise manner and allows practice of disaster preparedness without implementing an entire disaster drill. Table 1 provides a quick review of the areas and questions we found to be problems when implementing our disaster plan.

Accidents, Aviation↗
PubMedDate not supplied

Utilization of emergency medical services for symptoms of acute myocardial infarction.

OBJECTIVE: To examine patient characteristics and situational and clinical factors that affect utilization of Emergency Medical Services (EMS) for symptoms of acute myocardial infarction (AMI). DESIGN: Telephone interview of patients hospitalized with suspected AMI. SETTING: Nine hospitals in King County, Washington. PATIENTS: Patients admitted to a coronary or intensive care unit between October 1, 1986, and December 31, 1987, with suspected AMI occurring out of hospital. Spouses of patients who met criteria but died during the hospitalization also participated. OUTCOME MEASURES: Patient demographics, coping strategies, situational factors, prior cardiac history, perceived symptom severity, belief about the nature of condition, and method of transportation. RESULTS: Descriptive statistics showed that although few patients called EMS as a "first thing" in response to symptoms, almost half of all patients called EMS before being hospitalized. Stepwise logistic regression analyses revealed that being older, the belief that one was experiencing a heart attack, the presence of other people (including the spouse), and the lack of physical activity at time of symptom onset, were related to both greater and quicker utilization of EMS. Additionally, education, medical history of angina, and severity of symptoms also were related to utilization of EMS. CONCLUSION: The findings are discussed in a theoretical context, using Leventhal's self-regulatory model to suggest avenues for future research and interventions.

Adaptation, Psychological↗
PubMed1981

Vietnam in context.

Explore the source record for details and available documents.

Blood Transfusion↗
PubMed1984

Development and implementation of emergency CPR instruction via telephone.

We developed a cardiopulmonary resuscitation (CPR) message that can be given via telephone by emergency dispatchers directly to an individual reporting a cardiac arrest. The message was developed and evaluated on the basis of empirical observation of CPR performance of 203 community volunteers during simulated cardiac arrest events. The majority of volunteers were women, aged 30 to 80 years, who had not had previous CPR training. An average of five ventilation and compression cycles were given within five minutes using telephone instruction. We judged the quality of CPR to be comparable to the performance of individuals who have received formal training. The specific words used in the message directly determined adequacy of performance, and resulted in significantly better CPR performance than did impromptu instruction offered by professional dispatchers (P less than or equal to .02).

Adult↗
PubMed1989

HMOs and the use of 911.

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Emergency Medical Service Communication Systems↗
PubMed1994

Accuracy of determining cardiac arrest by emergency medical dispatchers.

STUDY OBJECTIVE: To identify and determine the rates of delivery and performance of telephone CPR in noncardiac arrest incidents. DESIGN: We studied prospectively all out-of-hospital cardiac arrest and potential cardiac arrest incidents from July 1 through October 31, 1992. SETTING: King County, Washington, excluding the city of Seattle. PARTICIPANTS: Persons with cardiac arrest or an initial complaint resembling cardiac arrest who received emergency medical services. INTERVENTIONS: Dispatcher-assisted telephone CPR. MEASUREMENTS AND MAIN RESULTS: Three hundred fifty-eight incidents of cardiac arrest, respiratory arrest, and potential cardiac arrest were reviewed. Telephone CPR was offered appropriately in 61 of 87 cases (70%) and inappropriately in eight of 154 potential cardiac arrests (5.2%) (95% confidence interval, 1.7%, 8.7%). Ventilation instructions were performed appropriately in 52 of 87 cases (60%) and inappropriately in three of 154 potential cardiac arrests (1.9%) (95% confidence interval, 0%, 4.1%). Chest compressions were performed appropriately in 26 of 68 cardiac arrests (38.2%) and inappropriately in two of 173 potential cardiac arrests (1.2%) (95% confidence interval, 0%, 2.8%). CONCLUSION: We found a low rate of performance of telephone CPR in King County for incidents resembling cardiac arrest. This finding suggests that the protocols designed for dispatcher-assisted telephone CPR effectively screen out those incidents that may initially resemble cardiac arrest.

Adult↗
PubMed1994

911 and emergency department use for chest pain: results of a media campaign.

STUDY OBJECTIVE: We evaluated the effects of a community public education campaign that encouraged patients to quickly call 911 after the onset of acute myocardial infarction (AMI) symptoms. SETTING AND PARTICIPANTS: The media campaign focused on residents 50 years of age or older in King County, Washington, which has a population of 1.5 million (1990 census). DESIGN: We determined 911 responses for chest pain, emergency department visits for AMI symptoms, the number of patients admitted to a CCU with an admitting diagnosis of rule-out MI, and the number of confirmed AMIs before and after the campaign. RESULTS: The number of emergency medical services (EMS) responses (911 runs) for patients 50 years of age or older experiencing AMI symptoms increased significantly during the media campaign. ED visits for chest pain also increased significantly during the campaign, as did the number of patients 50 years of age or older admitted to a King County CCU with an admitting diagnosis of rule-out MI. Each of the above increases tapered--with time after the media campaign but remained above baseline. CONCLUSION: An intense public education campaign can significantly increase EMS use, ED visits, and CCU admissions for AMI symptoms. However, these effects taper off with time after the campaign.

Aged↗
PubMed2003

Against all advice: an analysis of out-of-hospital refusals of care.

STUDY OBJECTIVE: We examine the characteristics of patients involved in out-of-hospital emergency medical services (EMS) incidents that result in refusal of care and determine the rates of subsequent EMS, emergency department (ED), and inpatient care, as well as death within 7 days. METHODS: Utah statewide EMS data identifying refusals of care were probabilistically linked to Utah statewide ED, inpatient, and death certificate data within 7 days of the initial EMS refusals for 1996 to 1998. Refusals were defined as incidents in which field treatment or transport was refused and did not include incidents in which EMS providers deemed care or transport unnecessary. RESULTS: Of 277244 EMS incidents, 14109 (5.1%) resulted in refusals of care. For all age groups, motor vehicle crash dispatches resulted in the highest rate of refusal of care, ranging from 8.0% to 11.7%. Slightly more than 3% of patients involved in a refusal of care incident had a subsequent EMS dispatch within a week. One fifth of the patients involved in EMS refusals of care had a subsequent ED visit. Less than 2% of the EMS refusal patients were hospitalized; hospitalization was highest among children younger than 3 years and adults older than 64 years. Twenty-five adults died within a week of refusing EMS care, of whom 19 (76.0%) were older than 64 years. CONCLUSION: Refusal of care incidents are a small segment of all EMS incidents. They arise from a variety of situations, and the risk for missed intervention may be minimal.

Accidents, Traffic↗