• Lars W Andersen, Mathias J Holmberg, Bo Løfgren, Hans Kirkegaard, and Asger Granfeldt.
• Research Center for Emergency Medicine, Department of Clinical Medicine, Aarhus University and Aarhus University Hospital, Aarhus, Denmark; Department of Intensive Care Medicine, Randers Regional Hospital, Randers, Denmark. Electronic address: lwandersen@clin.au.dk.
• Resuscitation. 2019 Jul 1; 140: 31-36.

AimThe aim of this study was to describe patient characteristics, event characteristics, and outcomes for patients with in-hospital cardiac arrest in Denmark.MethodsData was obtained from DANARREST. DANARREST is a nationwide registry that covers all in-hospital cardiac arrests in Denmark with a clinical indication for cardiopulmonary resuscitation (i.e. without a prior "do-not-resuscitate" order).ResultsA total of 4069 adult in-hospital cardiac arrests were registered between January 1st, 2017 and December 31st, 2018. The median age was 74 years (quartiles: 65, 81) and 37% were female. 71% had a non-shockable rhythm and the presumed etiology was primarily non-cardiac (57%). A total of 2180 patients (53.8%) achieved ROSC, with an additional 36 patients (0.9%) receiving extracorporeal cardiopulmonary resuscitation. At 30-days 1124 patients (27.8%) were alive. Of cardiac arrests from 2017, 404 patients (20.0%) survived to 1 year after the cardiac arrest. The incidence of adult in-hospital cardiac arrest in Denmark was estimated at 1.8 per 1000 admissions or 0.6 per 1000 in-patient days.ConclusionIn-hospital cardiac arrest occurs in at least 2000 patients each year in Denmark with a 30-day survival of approximately 28%. The establishment of a national registry for in-hospital cardiac arrest in Denmark will allow for quality improvement and research projects.Copyright © 2019 Elsevier B.V. All rights reserved.

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