Rapid dispatch for out-of-hospital cardiac arrest is associated with improved survival

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningfagfællebedømt

Aim: As proxy for initiation of the first link in the Chain of Survival by the dispatcher, we aimed to investigate the effect of time to first dispatch on 30-day survival among patients with OHCA ultimately receiving the highest-level emergency medical response. Methods: We linked data on all OHCA unwitnessed by emergency medical services (EMS) treated by Copenhagen EMS from 2016 through 2018 to corresponding emergency call records. Among patients receiving highest priority emergency response, we calculated time to dispatch as time from start of call to time of first dispatch. Results: We included 3548 patients with OHCA. Of these, 94.1% received the highest priority response (median time to dispatch 0.84 min, 25th–75th percentile 0.58–1.24 min). Patients with time to dispatch within one minute compared to three or more minutes were more likely to receive bystander cardiopulmonary resuscitation (77.3 vs 54.2%), bystander defibrillation (11.5 vs 6.5%) and defibrillation by emergency medical services (24.1 vs 7.5%) and were 2.6-fold more likely to survive 30 days after the OHCA (P = 0.004). Results from multivariate logistic regression were similar: odds ratio (OR) of survival 0.83 per minute increase (95% confidence interval 0.70–1.00, P = 0.04). However, survival was similar between those who received highest priority response and those who did not: OR of survival 0.88 (95% confidence interval 0.53–1.46, P = 0.61). Conclusion: Rapid time to dispatch among patients with highest priority response was significantly associated with a higher probability of 30-day survival following OHCA.

Sider (fra-til)176-183
Antal sider8
StatusUdgivet - jun. 2021

Bibliografisk note

Funding Information:
Kragholm has received research grants from the Laerdal Foundation. Torp-Pedersen has received grants for scientific studies from Bayer and Novo Nordisk. Folke has received grants from Novo Nordisk Foundation. Copenhagen EMS receives unrestricted research grants from the Laerdal Foundation.The study was supported by the Danish Heart Foundation (grant number: R122-A8403) whom had no role in the study design, in the collection, analysis and interpretation of data; in the writing of the manuscript; and in the decision to submit the manuscript for publication.

Publisher Copyright:
© 2021 Elsevier B.V.

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