• Am J Emerg Med · Aug 2016

    STEMI notification by emergency medical service predicts shorter door-to-balloon time and smaller infarct size.

    • Akihiro Kobayashi, Naoki Misumida, Shunsuke Aoi, Eric Steinberg, Kathleen Kearney, John T Fox, and Yumiko Kanei.
    • Department of Internal Medicine, Mount Sinai Beth Israel, New York. Electronic address: akobayashi@chpnet.org.
    • Am J Emerg Med. 2016 Aug 1; 34 (8): 1610-3.

    BackgroundEmergency medical services (EMS) transportation is associated with shorter door-to-balloon (DTB) time in patients with ST-segment elevation myocardial infarction (STEMI). In addition to EMS transportation, prehospital notification of STEMI by EMS to receiving hospital might be able to further shorten DTB time. We evaluated the impact of STEMI notification on DTB time as well as infarct size.MethodsWe performed a retrospective analysis of consecutive patients with anterior wall STEMI who underwent emergent coronary angiography. We excluded patients who presented with cardiac arrest and those who were transferred from non-percutaneous coronary intervention-capable hospitals. Mode of transportation were categorized into the 3 groups: (1) EMS transport with STEMI notification, (2) EMS transport without STEMI notification, and (3) self-transport. Baseline characteristics, laboratory data, left ventricular ejection fraction (LVEF), and DTB time were compared among the 3 groups.ResultsA total of 148 patients were included in the final analysis. Of the 148 patients, 56 patients arrived by EMS transport with STEMI notification, 56 patients arrived by EMS transport without STEMI notification, and 36 patients arrived by self-transport. Patients who arrived by EMS transport with STEMI notification had the shortest DTB time among the 3 groups. Patients who arrived by EMS transport with STEMI notification had smaller infarct size, as indicated by lower peak creatine kinase value and higher LVEF, compared with those who arrived by EMS transport without STEMI notification.ConclusionEmergency medical services transport with STEMI notification was associated with shorter DTB time and smaller infarct size in patients with anterior wall STEMI.Copyright © 2016 Elsevier Inc. All rights reserved.

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