{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,10]],"date-time":"2026-10-10T21:17:26Z","timestamp":1791667046620,"version":"4.3.4"},"reference-count":36,"publisher":"American Medical Association (AMA)","issue":"11","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["JAMA Netw Open"],"abstract":"\n Importance<\/jats:title>\n Drug overdose (OD) is a public health challenge and an important cause of out-of-hospital cardiac arrest (OHCA). Existing studies evaluating OD-related OHCA (OD-OHCA) either aggregate all drugs or focus on opioids. The epidemiology, presentation, and outcomes of drug-specific OHCA are largely unknown.<\/jats:p>\n <\/jats:sec>\n \n Objective<\/jats:title>\n To evaluate the temporal pattern, clinical presentation, care, and outcomes of adult patients with OHCA overall and according to the drug-specific profile.<\/jats:p>\n <\/jats:sec>\n \n Design, Setting, and Participants<\/jats:title>\n This cohort study of adults with OHCA in King County Washington was conducted between January 1, 2015, and December 31, 2021. Etiology of OHCA was determined using emergency medical service, hospital, and medical examiner records. Etiology was classified as non-OD OHCA or OD-OHCA, with drug-specific profiles categorized as (1) opioid without stimulant, (2) stimulant without opioid, (3) opioid and stimulant, or (4) all other nonstimulant, nonopioid drugs. Statistical analysis was performed on July 1, 2023.<\/jats:p>\n <\/jats:sec>\n \n Exposure<\/jats:title>\n Out-of-hospital cardiac arrest.<\/jats:p>\n <\/jats:sec>\n \n Main Outcomes and Measures<\/jats:title>\n The primary outcome was survival to hospital discharge. The secondary outcome was survival with favorable functional status defined by Cerebral Performance Category 1 or 2 based on review of the hospital record.<\/jats:p>\n <\/jats:sec>\n \n Results<\/jats:title>\n \n In this cohort study, there were 6790 adult patients with emergency medical services\u2013treated OHCA from a US metropolitan system. During the 7-year study period, there were 702 patients with OD-OHCA (median age, 41 years [IQR, 29-53 years]; 64% male [n\u2009=\u2009450] and 36% female [n\u2009=\u2009252]) and 6088 patients with non-OD OHCA (median age, 66 years [IQR, 56-77 years]; 65% male [n\u2009=\u20093944] and 35% female [n\u2009=\u20092144]). The incidence of OD-OHCA increased from 5.2 (95% CI, 3.8-6.6) per 100\u202f000 person-years in 2015 to 13.0 (95% CI, 10.9-15.1) per 100\u202f000 person-years in 2021 (\n P<\/jats:italic>\n \u2009&amp;lt;\u2009.001 for trend), whereas there was no significant temporal change in the incidence of non-OD OHCA (\n P<\/jats:italic>\n \u2009=\u2009.30). OD-OHCA were more likely to be unwitnessed (66% [460 of 702] vs 41% [2515 of 6088]) and less likely to be shockable (8% [56 of 702] vs 25% [1529 of 6088]) compared with non-OD OHCA. Unadjusted survival was not different (20% [138 of 702] for OD vs 18% [1095 of 6088] for non-OD). When stratified by drug profile, combined opioid-stimulant OHCA demonstrated the greatest relative increase in incidence. Presentation and outcomes differed by drug profile. Patients with stimulant-only OHCA were more likely to have a shockable rhythm (24% [31 of 129]) compared with patients with opioid-only OHCA (4% [11 of 295]) or patients with combined stimulant-opioid OHCA 5% [10 of 205]), and they were more likely to have a witnessed arrest (50% [64 of 129]) compared with patients with OHCA due to other drugs (19% [14 of 73]) or patients with combined stimulant-opioid OHCA (23% [48 of 205]). Patients with a combined opioid-stimulant OHCA had the lowest survival to hospital discharge (10% [21 of 205]) compared with patients with stimulant-only OHCA (22% [29 of 129]) or patients with OHCA due to other drugs (26% [19 of 73]), a difference that persisted after multivariable adjustment.\n <\/jats:p>\n <\/jats:sec>\n \n Conclusions and Relevance<\/jats:title>\n In a population-based cohort study, the incidence of OD-OHCA increased significantly from 2015 to 2021, with the greatest increase observed among patients with a combined stimulant-opioid OHCA. Presentation and outcome differed according to the drug-specific profile. The combination of increasing incidence and lower survival among among patients with a opioid-stimulant OHCA supports prevention and treatment initiatives that consider the drug-specific profile.<\/jats:p>\n <\/jats:sec>","DOI":"10.1001\/jamanetworkopen.2023.41921","type":"journal-article","created":{"date-parts":[[2023,11,7]],"date-time":"2023-11-07T11:32:58Z","timestamp":1699356778000},"page":"e2341921","source":"Crossref","is-referenced-by-count":25,"title":["Presentation and Outcomes of Adults With Overdose-Related Out-of-Hospital Cardiac Arrest"],"prefix":"10.1001","volume":"6","author":[{"given":"Vidhushei","family":"Yogeswaran","sequence":"first","affiliation":[{"name":"Department of Medicine, University of Washington, Seattle, Washington"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Christopher","family":"Drucker","sequence":"additional","affiliation":[{"name":"Public Health\u2013Seattle & King County Division of Emergency Medical Services, Seattle, Washington"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kosuke","family":"Kume","sequence":"additional","affiliation":[{"name":"Public Health\u2013Seattle & King County Division of Emergency Medical Services, Seattle, Washington"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Amy","family":"Poel","sequence":"additional","affiliation":[{"name":"Public Health\u2013Seattle & King County Division of Emergency Medical Services, Seattle, Washington"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Nicole","family":"Yarid","sequence":"additional","affiliation":[{"name":"King County Medical Examiner\u2019s Office, Seattle, Washington"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sarah","family":"Leyde","sequence":"additional","affiliation":[{"name":"Department of Medicine, University of Washington, Seattle, Washington"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Thomas 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