{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,23]],"date-time":"2026-10-23T22:32:36Z","timestamp":1792794756823,"version":"4.5.0"},"reference-count":34,"publisher":"Ovid Technologies (Wolters Kluwer Health)","issue":"10","content-domain":{"domain":["www.ahajournals.org"],"crossmark-restriction":true},"short-container-title":["JAHA"],"published-print":{"date-parts":[[2017,10,11]]},"abstract":"\n Background<\/jats:title>\n \n Dispatch of basic life support\u2013trained first responders equipped with automated external defibrillators in addition to advanced life support\u2013trained emergency medical services personnel in out\u2010of\u2010hospital cardiac arrest (\n OHCA<\/jats:styled-content>\n ) has, in some minor cohort studies, been associated with improved survival. The aim of this study was to evaluate the association between\n basic life support<\/jats:styled-content>\n plus\n advanced life support<\/jats:styled-content>\n response and survival in\n OHCA<\/jats:styled-content>\n at a national level.\n <\/jats:p>\n <\/jats:sec>\n \n Methods and Results<\/jats:title>\n \n This prospective cohort study was conducted from January 1, 2012, to December 31, 2014.\n People who experienced OHCA<\/jats:styled-content>\n in 9 Swedish counties covered by\n basic life support<\/jats:styled-content>\n plus\n advanced life support<\/jats:styled-content>\n response were compared with a propensity\u2010matched contemporary control group of\n people who experienced OHCA<\/jats:styled-content>\n in 12 counties where only\n emergency medical services<\/jats:styled-content>\n was dispatched, providing\n advanced life support<\/jats:styled-content>\n . Primary outcome was survival to 30\u00a0days. The analytic sample consisted of 2786 pairs (n=5572) derived from the total cohort of 7308 complete cases. The median time from emergency call to arrival of\n emergency medical services<\/jats:styled-content>\n or first responder was 9\u00a0minutes in the intervention group versus 10\u00a0minutes in the controls (\n P<\/jats:italic>\n <0.001). The proportion of patients admitted alive to the hospital after resuscitation was 31.4% (875\/2786) in the intervention group versus 24.9% (694\/2786) in the controls (conditional\n odds ratio,<\/jats:styled-content>\n 1.40; 95% confidence interval, 1.24\u20131.57). Thirty\u2010day survival was 9.5% (266\/2786) in the intervention group versus 7.7% (214\/2786) in the controls (conditional odds ratio\n ,<\/jats:styled-content>\n 1.27; 95% confidence interval, 1.05\u20131.54).\n <\/jats:p>\n <\/jats:sec>\n \n Conclusions<\/jats:title>\n \n In this nationwide interventional trial, using propensity score matching, dispatch of first responders in addition to\n emergency medical services<\/jats:styled-content>\n in\n OHCA<\/jats:styled-content>\n was associated with a moderate, but significant, increase in 30\u2010day survival.\n <\/jats:p>\n <\/jats:sec>\n \n Clinical Trial Registration<\/jats:title>\n \n URL<\/jats:styled-content>\n :\n http:\/\/www.clinicaltrials.gov<\/jats:ext-link>\n . Unique identifier:\n NCT<\/jats:styled-content>\n 02184468.\n <\/jats:p>\n <\/jats:sec>","DOI":"10.1161\/jaha.117.005873","type":"journal-article","created":{"date-parts":[[2017,10,4]],"date-time":"2017-10-04T20:10:22Z","timestamp":1507147822000},"update-policy":"https:\/\/doi.org\/10.1161\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":51,"title":["Dispatch of Firefighters and Police Officers in Out\u2010of\u2010Hospital Cardiac Arrest: A Nationwide Prospective Cohort Trial Using Propensity Score Analysis"],"prefix":"10.1161","volume":"6","author":[{"given":"Ingela","family":"Hasselqvist\u2010Ax","sequence":"first","affiliation":[{"name":"Department of Medicine, Center for Resuscitation Science, Karolinska Institutet, Solna, Sweden"},{"name":"Section\u00a0of Cardiology, Stockholm South General Hospital, Stockholm, Sweden"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Per","family":"Nordberg","sequence":"additional","affiliation":[{"name":"Department of Medicine, Center for Resuscitation Science, Karolinska Institutet, Solna, Sweden"},{"name":"Section\u00a0of Cardiology, Stockholm South General Hospital, Stockholm, Sweden"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Johan","family":"Herlitz","sequence":"additional","affiliation":[{"name":"Centre for Pre\u2010Hospital Research in Western Sweden, University of Bor\u00e5s, Bor\u00e5s, Sweden"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Leif","family":"Svensson","sequence":"additional","affiliation":[{"name":"Department of Medicine, Center for Resuscitation Science, Karolinska Institutet, Solna, Sweden"},{"name":"Section\u00a0of Cardiology, Stockholm South General Hospital, Stockholm, Sweden"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Martin","family":"Jonsson","sequence":"additional","affiliation":[{"name":"Department of Medicine, Center for Resuscitation Science, Karolinska Institutet, Solna, Sweden"},{"name":"Section\u00a0of Cardiology, Stockholm South General Hospital, Stockholm, Sweden"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jonny","family":"Lindqvist","sequence":"additional","affiliation":[{"name":"Institute of Medicine, Center for Cardiovascular and Metabolic Research, Sahlgrenska University Hospital, G\u00f6teborg, Sweden"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mattias","family":"Ringh","sequence":"additional","affiliation":[{"name":"Department of Medicine, Center for Resuscitation Science, Karolinska Institutet, Solna, Sweden"},{"name":"Section\u00a0of Cardiology, Stockholm South General Hospital, Stockholm, Sweden"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Andreas","family":"Claesson","sequence":"additional","affiliation":[{"name":"Department of Medicine, Center for Resuscitation Science, Karolinska Institutet, Solna, Sweden"},{"name":"Section\u00a0of Cardiology, Stockholm South General Hospital, Stockholm, 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