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    Interim analysis of ambulance logistics and timings in patients recruited into the rapid intervention with glyceryl trinitrate in hypertensive stroke trial-2 (right-2)

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    Author
    Dixon, Mark cc
    Scutt, Polly
    Appleton, Jason P.
    Spaight, Robert
    Johnson, Roderick
    Siriwardena, Aloysius cc
    Bath, Philip cc
    RIGHT-2 investigators
    Keyword
    Emergency Medical Services
    Stroke
    Pre-hospital
    Paramedics
    Glyceryl Trinitrate
    Journal title
    Emergency Medicine Journal
    
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    URI
    http://hdl.handle.net/20.500.12417/274
    DOI
    10.1136/emermed-2017-207114.18
    Abstract
    Background Stroke is a severe condition with high morbidity and mortality. Despite treatment effects in acute stroke being predominantly time dependent (e.g. thrombolysis and thrombectomy), proven treatments are hospital based and require prior brain scanning to identify intracerebral haemorrhage. Commencing treatment in the ambulance could dramatically reduce time to treatment. Methods The rapid intervention with glyceryl trinitrate in hypertensive stroke trial-2 (RIGHT-2) is a multicentre prospective randomised single-blind blinded-endpoint parallel group trial assessing the safety and efficacy of ambulance-based, paramedic-delivered glyceryl trinitrate (GTN) when administered within 4 hours of stroke onset. Paramedics trained in RIGHT-2 procedures assess, take appropriate consent and enrol eligible FAST-positive patients and apply the first of four GTN or sham transdermal patches that are continued during hospital admission. Timings, vital signs and distances are recorded. Results 317 participants enrolled across five UK NHS ambulance services were assessed in this interim analysis. Median [interquartile range] timings in minutes were: symptom onset to 999 call 14 [5, 52], call-dispatch 2 [1, 6], onset-randomisation 60 [40, 105], scene-randomisation 21 [14, 31] with no difference between participants scoring FAST 2 or 3, scene-departure 32 [25, 40]), departure-hospital 16 [10, 24]. All timings were comparable to a cohort of 49 stroke patients across East Midlands Ambulance Service who were not enrolled in to RIGHT-2, e.g. scene-departure 32 [23, 40]. Conclusions Randomisation of participants to an ambulance-based stroke trial is possible with paramedics rapidly identifying eligible patients, gaining appropriate consent, randomising and commencing treatment en route to hospital without prolonging time spent on scene. https://emj.bmj.com/content/34/10/e6.3 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/ http://dx.doi.org/10.1136/emermed-2017-207114.18
    ae974a485f413a2113503eed53cd6c53
    10.1136/emermed-2017-207114.18
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