• LarsenMia BangMBDepartment of Clinical Medicine, Aalborg University, Denmark. Electronic address: miabanglarsen@icloud.com., Emil Blom-Hanssen, Filip Gnesin, Kristian Hay Kragholm, Lass KlitgaardThomasTDep... more artment of Anaesthesia and Intensive Care, Aalborg University Hospital, Denmark., ChristensenHelle CollatzHCDet Præhospitale Center, Region Sjælland, Denmark., Freddy Lippert, Fredrik Folke, Christian Torp-Pedersen, and RinggrenKristian BundgaardKBDepartment of Anesthesia and Intensive Care, North Denmark Regional Hospital, Denmark.. less
• Department of Clinical Medicine, Aalborg University, Denmark. Electronic address: miabanglarsen@icloud.com.
• Resuscitation. 2024 Apr 1; 197: 110155110155.

BackgroundOut-of-hospital cardiac arrest (OHCA) is a frequent and lethal condition with a yearly incidence of approximately 5000 in Denmark. Thirty-day survival is associated with the patient's prodromal complaints prior to cardiac arrest. This paper examines the odds of 30-day survival dependent on the reported prodromal complaints among OHCAs witnessed by the emergency medical services (EMS).MethodsEMS-witnessed OHCAs in the Capital Region of Denmark from 2016-2018 were included. Calls to the emergency number 1-1-2 and the medical helpline for out-of-hours were analyzed according to the Danish Index; data regarding the OHCA was collected from the Danish Cardiac Arrest Registry. We performed multiple logistic regression to calculate the odds ratio (OR) of 30-day survival with adjustment for sex and age.ResultsWe identified 311 eligible OHCAs of which 79 (25.4%) survived. The most commonly reported complaints were dyspnea (n = 209, OR 0.79 [95% CI 0.46: 1.36]) and 'feeling generally unwell' (n = 185, OR 1.07 [95% CI 0.63: 1.81]). Chest pain (OR 9.16 [95% CI 5.09:16.9]) and heart palpitations (OR 3.15 [95% CI 1.07:9.46]) had the highest ORs, indicating favorable odds for 30-day survival, while unresponsiveness (OR 0.22 [95% CI 0.11:0.43]) and blue skin or lips (OR 0.30, 95% CI 0.09, 0.81) had the lowest, indicating lesser odds of 30-day survival.ConclusionExperiencing chest pain or heart palpitations prior to EMS-witnessed OHCA was associated with higher 30-day survival. Conversely, complaints of unresponsiveness or having blue skin or lips implied reduced odds of 30-day survival.Copyright © 2024 The Authors. Published by Elsevier B.V. All rights reserved.

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