COAST (COAgulopathy in Severe Trauma) prehospital score used in PATCH clinical trial. COAST (COAgulopathy in Severe Trauma) prehospital score used in PATCH clinical trial. From https://ambulance.qld.gov.au/%5Cdocs%5Cclinical%5Ccpp%5CCPP_COAST%20score.pdf. Lena M Napolitano Trauma Surg Acute Care Open 2017;2:e000056 Published by the BMJ Publishing Group Limited. For permission to use (where not already granted under a licence) please go to http://www.bmj.com/company/products-services/rights-and-licensing/