Abstract TP230: Prehospital Timeline of Mobile Stroke Treatment Unit and Traditional Ambulance

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Abstract

Introduction: Prehospital evaluation and response is vital to effective and early delivery of acute stroke treatment. We aimed to compare the times across various prehospital times among stroke patients arriving by municipal EMS and MSTU.

Methods: We performed a retrospective study of 107 patients with a final diagnosis of ischemic stroke within our hospital system from June 2014 to July 2015. We compared on scene arrival, hospital arrival, and time of physician assessment of patients evaluated on MSTU to traditional municipal EMS. Times are reported as medians and groups were compared by Rank-Sum Test.

Results: Of 107 patients, 49 patients were evaluated by traditional EMS and 58 evaluated by MSTU. Time from dispatch to scene arrival was median 9 min (IQR 5.5 - 12min) in EMS group and median 12 min (IQR 8-16 min) n MSTU (p<0.01). Time on scene was 17 min (IQR 14 - 24min) in EMS group and median 42 min (IQR 36-48 min) in MSTU. There was no difference within the MSTU group in time on-scene among those treated with IV tpA (43 min) and those without (41 min, p=.08 ). After dispatch, patients arrived in hospital by EMS earlier (median 40 min, IQR 33-49min) than by MSTU (median 72 min, IQR 58-81min, p<.01), but patients on MSTU were evaluated by a physician at median 28 (IQR 21.5-34.5) min after dispatch.

Conclusion: Early evaluation of ischemic stroke patients with MSTU, doubles the time on scene compared to municipal EMS.

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