{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,20]],"date-time":"2026-10-20T17:08:51Z","timestamp":1792516131444,"version":"4.5.0"},"reference-count":31,"publisher":"Oxford University Press (OUP)","issue":"10","license":[{"start":{"date-parts":[[2021,5,5]],"date-time":"2021-05-05T00:00:00Z","timestamp":1620172800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/academic.oup.com\/journals\/pages\/open_access\/funder_policies\/chorus\/standard_publication_model"}],"funder":[{"DOI":"10.13039\/100007405","name":"The Danish Heart Foundation","doi-asserted-by":"crossref","award":["R122-A8403"],"award-info":[{"award-number":["R122-A8403"]}],"id":[{"id":"10.13039\/100007405","id-type":"DOI","asserted-by":"crossref"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2021,12,18]]},"abstract":"<jats:title>Abstract<\/jats:title>\n               <jats:sec>\n                  <jats:title>Aims<\/jats:title>\n                  <jats:p>We examined associations between symptom presentation and chance of receiving an emergency dispatch and 30-day mortality among patients with acute myocardial infarction (MI).<\/jats:p>\n               <\/jats:sec>\n               <jats:sec>\n                  <jats:title>Methods and results<\/jats:title>\n                  <jats:p>Copenhagen, Denmark has a 24-h non-emergency medical helpline and an emergency number 1-1-2 (equivalent to 9-1-1). Both services register symptoms\/purpose of calls. Among patients with MI as either hospital diagnosis or cause of death within 72\u2009h after a call, the primary symptom was categorized as chest pain, atypical symptoms (breathing problems, unclear problem, central nervous system symptoms, abdominal\/back\/urinary, other cardiac symptoms, and other atypical symptoms), unconsciousness, non-informative symptoms, and no recorded symptoms. We identified 4880 emergency and 3456 non-emergency calls from patients with MI. The most common symptom was chest pain (N\u2009=\u20095219) followed by breathing problems (N\u2009=\u2009556). Among patients with chest pain, 95% (3337\/3508) of emergency calls and 76% (1306\/1711) of non-emergency calls received emergency dispatch. Mortality was 5% (163\/3508) and 3% (49\/1711) for emergency\/non-emergency calls, respectively. For atypical symptoms 62% (554\/900) and 17% (137\/813) of emergency\/non-emergency calls received emergency dispatch and mortality was 23% (206\/900) and 15% (125\/813). Among unconscious, patients 99%\/100% received emergency dispatch and mortality was 71%\/75% for emergency\/non-emergency calls. Standardized 30-day mortality was 4.3% for chest pain and 15.6% for atypical symptoms, and associations between symptoms and emergency dispatch remained in subgroups of age and sex.<\/jats:p>\n               <\/jats:sec>\n               <jats:sec>\n                  <jats:title>Conclusion<\/jats:title>\n                  <jats:p>Myocardial infarction patients presenting with atypical symptoms when calling for help have a reduced chance of receiving an emergency dispatch and increased 30-day mortality compared to MI patients with chest pain.<\/jats:p>\n               <\/jats:sec>","DOI":"10.1093\/ehjacc\/zuab023","type":"journal-article","created":{"date-parts":[[2021,3,23]],"date-time":"2021-03-23T20:35:57Z","timestamp":1616531757000},"page":"1150-1159","source":"Crossref","is-referenced-by-count":8,"title":["Impact of myocardial infarction symptom presentation on emergency response and survival"],"prefix":"10.1093","volume":"10","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-2952-2809","authenticated-orcid":false,"given":"Amalie Lykkemark","family":"M\u00f8ller","sequence":"first","affiliation":[{"name":"Department of Cardiology, Nordsj\u00e6llands Hospital, Dyrehavevej 29, Hiller\u00f8d 2400, Denmark"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7499-3880","authenticated-orcid":false,"given":"Elisabeth Helen Anna","family":"Mills","sequence":"additional","affiliation":[{"name":"Department of Cardiology, Aalborg University Hospital, Hobrovej 18-22, Aalborg 9100, Denmark"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3566-5155","authenticated-orcid":false,"given":"Filip","family":"Gnesin","sequence":"additional","affiliation":[{"name":"Department of Cardiology, Nordsj\u00e6llands Hospital, Dyrehavevej 29, Hiller\u00f8d 2400, Denmark"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2026-6458","authenticated-orcid":false,"given":"Britta","family":"Jensen","sequence":"additional","affiliation":[{"name":"Department of Health Science and Technology, Aalborg University, Niels Jernes Vej 14, Aalborg 9220, Denmark"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8562-6760","authenticated-orcid":false,"given":"Nertila","family":"Zylyftari","sequence":"additional","affiliation":[{"name":"Department of Cardiology, Copenhagen University Hospital Herlev and Gentofte, Gentofte Hospitalsvej 1, Hellerup 2900, Denmark"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Helle Collatz","family":"Christensen","sequence":"additional","affiliation":[{"name":"Copenhagen Emergency Medical Services, Telegrafvej 5, Ballerup 2750, Denmark"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5073-6820","authenticated-orcid":false,"given":"Stig Nikolaj Fasmer","family":"Blomberg","sequence":"additional","affiliation":[{"name":"Copenhagen Emergency Medical Services, Telegrafvej 5, Ballerup 2750, Denmark"},{"name":"Department of Clinical Medicine, University of Copenhagen, Blegdamsvej 3B, Copenhagen 2200, Denmark"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2284-7857","authenticated-orcid":false,"given":"Fredrik","family":"Folke","sequence":"additional","affiliation":[{"name":"Department of Cardiology, Copenhagen University Hospital Herlev and Gentofte, Gentofte Hospitalsvej 1, Hellerup 2900, Denmark"},{"name":"Copenhagen Emergency Medical Services, Telegrafvej 5, Ballerup 2750, Denmark"},{"name":"Department of Clinical Medicine, University of Copenhagen, Blegdamsvej 3B, Copenhagen 2200, Denmark"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9629-8670","authenticated-orcid":false,"given":"Kristian Hay","family":"Kragholm","sequence":"additional","affiliation":[{"name":"Unit of Clinical Biostatistics and Epidemiology, Department of Cardiology, Aalborg University Hospital, Aalborg, Denmark"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0548-402X","authenticated-orcid":false,"given":"Gunnar","family":"Gislason","sequence":"additional","affiliation":[{"name":"Department of Cardiology, Copenhagen University Hospital Herlev and Gentofte, Gentofte Hospitalsvej 1, Hellerup 2900, Denmark"},{"name":"Department of Research, Danish Heart Foundation, Vognmagergade 7, Copenhagen 1120, Denmark"},{"name":"The National Institute of Public Health, University of Southern Denmark, Studiestr\u00e6de 6, Copenhagen 1455, Denmark"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Emil","family":"Fosb\u00f8l","sequence":"additional","affiliation":[{"name":"Departmet of Cardiology, Copenhagen University Hospital, Rigshospitalet, Blegdamsvej 9, Copenhagen 2100, Denmark"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Lars","family":"K\u00f8ber","sequence":"additional","affiliation":[{"name":"Department of Clinical Medicine, University of Copenhagen, Blegdamsvej 3B, Copenhagen 2200, Denmark"},{"name":"Departmet of Cardiology, Copenhagen University Hospital, Rigshospitalet, Blegdamsvej 9, Copenhagen 2100, Denmark"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5955-816X","authenticated-orcid":false,"given":"Thomas Alexander","family":"Gerds","sequence":"additional","affiliation":[{"name":"Section of Biostatistics, Department of Public Health, University of Copenhagen, \u00d8ster Farimagsgade 5A, 1353, Copenhagen, Denmark"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2892-6131","authenticated-orcid":false,"given":"Christian","family":"Torp-Pedersen","sequence":"additional","affiliation":[{"name":"Department of Cardiology, Nordsj\u00e6llands Hospital, Dyrehavevej 29, Hiller\u00f8d 2400, Denmark"},{"name":"Department of Cardiology, Aalborg University Hospital, Hobrovej 18-22, Aalborg 9100, Denmark"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"286","published-online":{"date-parts":[[2021,5,5]]},"reference":[{"key":"2021121823163060900_zuab023-B1","doi-asserted-by":"crossref","first-page":"29","DOI":"10.1017\/S1049023X1700704X","article-title":"Hospital-confirmed acute myocardial infarction: prehospital identification using the medical priority dispatch system","volume":"33","author":"Clawson","year":"2018","journal-title":"Prehospital Disaster 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