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    Is ambulance telephone triage using advanced medical priority dispatch protocols able to identify patients with acute stroke correctly?

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    Author
    Deakin, Charles cc
    Alasaad, M.
    King, P.
    Thompson, F.
    Keyword
    Triage
    Medical Priority Dispatch System
    Stroke
    Pre-hospital Care
    Emergency Medical Services
    Journal title
    Emergency Medicine Journal
    
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    URI
    http://hdl.handle.net/20.500.12417/880
    DOI
    10.1136/emj.2008.059733
    Abstract
    Background and Purpose: As many as half the patients presenting with acute stroke access medical care through the ambulance service. In order to identify and triage these patients effectively as life-threatening emergencies, telephone-based ambulance software must have high sensitivity and specificity when using verbal descriptions to identify such patients. Software-based clinical coding was compared with the patient’s final clinical diagnosis for all patients admitted by ambulance to North Hampshire Hospital (NHH) emergency department (ED) over a 6-month period to establish the ability of telephone-based triage to identify patients with likely stroke accurately. Methods: All emergency calls to South Central Ambulance Service over a 6-month period resulting in a patient being taken to NHH ED were reviewed. The classification allocated to the patient by ambulance advanced medical priority dispatch software (AMPDS version 11.1) was compared with the final clinical diagnosis made by a doctor in the ED. Results: 4810 patients were admitted to NHH during the study period. Of these, 126 patients were subsequently diagnosed as having had a stroke. The sensitivity of AMPDS software for detecting stroke in this sample was 47.62%, specificity was 98.68%, positive predictive value was 0.49 and negative predictive value was 0.986. Conclusions: Fewer than half of all patients with acute stroke were identified using telephone triage on the initial emergency call to the ambulance service. Less than one quarter received the highest priority of ambulance response. This first link in the chain of survival needs strengthening in order to provide prompt and timely emergency care for these patients. https://emj.bmj.com/content/26/6/442. This is an Open Access article distributed in accordance with the Creative Commons Attribution Non Commercial (CC BY-NC 4.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited and the use is non-commercial. See: http://creativecommons.org/licenses/by-nc/4.0/ DOI http://dx.doi.org/10.1136/emj.2008.059733
    ae974a485f413a2113503eed53cd6c53
    10.1136/emj.2008.059733
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