• Henrik Höglund, Jan-Håkan Jansson, Ann-Sofie Forslund, and Dan Lundblad.
• Department of Public Health and Clinical Medicine, Sunderby Research Unit, Umeå University, Sweden.
• Resuscitation. 2014 Jul 1;85(7):864-8.

AimsTo describe prodromal symptoms and health care consumption prior to an out-of-hospital cardiac arrest (OHCA) in patients without previously known ischaemic heart disease (IHD).BackgroundThe most common lethal event of cardiovascular disease is sudden cardiac death, and the majority occur outside hospital. Little is known about prodromal symptoms and health care consumption associated with OHCAs.DesignCase-crossover study.MethodsMedical records of 403 OHCA cases without previously known IHD, age 25-74 years in the MONICA myocardial registry in Norrbotten County 2000-2008, were reviewed. Presenting symptoms and emergency visits at public primary care facilities and internal medicine clinics in Norrbotten County were analyzed from the week prior to the OHCA and from the same week one year previously, which served as a control week. Unlike most studies we included unwitnessed arrests and those where no cardiopulmonary resuscitation (CPR) was attempted.ResultsEmergency visits were more common during the week prior to the OHCA than during the control week, both for visits to primary care (29 vs. 6, p<0.001) and to internal medicine clinics (16 vs. 0, p<0.001). Symptoms were more prevalent during the week prior to the OHCA (36.7 vs. 6.7%, p<0.001). The most prevalent symptoms were chest pain (14.6 vs. 0%, p<0.001), gastrointestinal symptoms (7.7 vs. 1.2%, p<0.001) and dyspnoea/peripheral oedema (6.9 vs. 0.2%, p<0.001).ConclusionsPatients who suffer an OHCA seek health care and present prodromal symptoms significantly more often the week prior to the event than the same week one year earlier.Copyright © 2014 The Authors. Published by Elsevier Ireland Ltd.. All rights reserved.

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