Articles: emergency-medical-services.
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Randomized Controlled Trial Multicenter Study Clinical Trial
Measuring survival rates from sudden cardiac arrest: the elusive definition.
Measuring survival from sudden out-of-hospital cardiac arrest (OOH-CA) is often used as a benchmark of the quality of a community's emergency medical service (EMS) system. The definition of OOH-CA survival rates depends both upon the numerator (surviving cases) and the denominator (all cases). ⋯ Reported OOH-CA rates and survival rates vary widely, depending upon the definitions applied to events. Rigorous assessment of treatments applied to improve survival can be obscured by inappropriate definitions. Large-scale randomized interventions designed to improve survival from OOH-CA can be evaluated based upon the absolute numbers of patients surviving, rather than a change in the proportion surviving.
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Randomized Controlled Trial Multicenter Study Clinical Trial
Evaluation of an impedance threshold device in patients receiving active compression-decompression cardiopulmonary resuscitation for out of hospital cardiac arrest.
The purpose of this multicentre clinical randomized controlled blinded prospective trial was to determine whether an inspiratory impedance threshold device (ITD), when used in combination with active compression-decompression (ACD) cardiopulmonary resuscitation (CPR), would improve survival rates in patients with out-of-hospital cardiac arrest. ⋯ The use of an impedance valve in patients receiving active compression-decompression cardiopulmonary resuscitation for out-of-hospital cardiac arrest significantly improved 24 h survival rates.
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To evaluate the hypothesis that computed tomography (CT) angiography often yields a result interpreted as an alternative diagnosis to pulmonary embolism (PE) in emergency department (ED) patients. ⋯ In ED patients with suspected PE, the CT angiogram frequently provides evidence suggesting an important alternative diagnosis to PE. Pulmonary infiltrate suggesting pneumonia was the most common non-PE finding.
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Multicenter Study
Factors associated with hospital arrival time for stroke patients.
Patients who experience a sudden ischemic stroke can benefit from administration of intravenous tissue plasminogen activator (tPA) to reduce the resulting disability, yet few arrive in time to be eligible for tPA administration. The purpose of this study was to determine (a) the stroke warning signs that most commonly result in the decision to seek hospital care, (b) who makes the decision to seek hospital care, (c) the most common mode of transportation to the hospital, (d) hospital arrival time in relation to the onset of the first warning sign, and (e) factors most associated with hospital arrival time for stroke survivors. Using a descriptive, cross-sectional design, data from a convenience sample of 50 stroke survivors and/or their companions (family, friends, or others seeking hospital care for the patient) were obtained by face-to-face interview during the patient's hospital stay using a structured interview guide developed by the investigator. ⋯ Patients arriving by private car or taxi and those perceiving their incomes as comfortable had the longest arrival times, suggesting public education efforts also should target people from higher socioeconomic groups. The nonsignificant associations between hospital arrival time, warning signs, and other demographic characteristics of initiators suggest there may be other unmeasured behavioral factors that play a more important role in reducing hospital arrival time for stroke patients. Further study of additional factors associated with early hospital arrival time is recommended to support educational efforts for early stroke treatment and prevention.
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Randomized Controlled Trial Multicenter Study Clinical Trial
Conducting research using the emergency exception from informed consent: the Public Access Defibrillation (PAD) Trial experience.
The Public Access Defibrillation (PAD) Trial, a prospective, multicenter, randomized clinical trial comparing two prehospital resuscitation strategies, was conducted under the regulations for exception from informed consent (21CFR50.24) in 24 communities in North America. These regulations place additional requirements for human subject protection on investigators and Institutional Review Boards (IRBs), including conducting community consultation (CC) and public disclosure (PD). ⋯ The length of time to obtain IRB approval and the extent of community consultation and public disclosure varied greatly among trial sites in meeting the current regulations for conducting emergency research with exception from informed consent. This suggests that more specific guidance may be useful and that determination of effective strategies for community consultation and public disclosure is needed.