• Resuscitation · Sep 2018

    Severity of ischemic heart disease and presenting rhythm in patients with out-of-hospital cardiac arrest.

    • Asger Granfeldt, Kasper Adelborg, Mads Wissenberg, Møller Hansen Steen S Department of Clinical Epidemiology, Aalborg University Hospital, Aalborg, Denmark., Christian Torp-Pedersen, Erika Frischknecht Christensen, Lars W Andersen, and Christian Fynbo Christiansen.
    • Department of Anesthesiology, Aarhus University Hospital, Aarhus, Denmark. Electronic address: granfeldt@clin.au.dk.
    • Resuscitation. 2018 Sep 1; 130: 174-181.

    IntroductionIschemic heart disease (IHD) is associated with a shockable rhythm in out-of-hospital cardiac arrest (OHCA). However, the impact of IHD severity on first recorded rhythm is unknown. We hypothesized that the strength of the association between IHD and shockable rhythm increases with increasing IHD severity.MethodsOHCA patients were identified in the Danish Cardiac Arrest Registry (2001-2014). Population-based registries were used to identify chronic diseases, drug prescriptions and cardiac procedures such as coronary angiography (CAG), percutaneous coronary intervention (PCI), and coronary artery bypass grafting (CABG). Severity of IHD was categorized as 1) No diagnosis of IHD, 2) IHD without previous CAG, PCI or CABG, 3) IHD with CAG, 4) IHD with PCI, and 5) IHD with CABG. Adjusted odds ratios (ORs) for a shockable rhythm was computed using multivariable logistic regression.ResultsOf 34,749 patients with OHCA, 6325 (18.2%) patients had a diagnosis of IHD. The prevalence of a shockable rhythm was higher for patients with a previous diagnosis of IHD (25.6%) and for those with previous CAG (33.3%), PCI (36.4%) or CABG (34.0%) when compared to patients without IHD (21.2%). IHD was associated with shockable rhythm (OR = 1.69, 95%CI 1.55-1.85) when compared to patients without IHD. The association with shockable rhythm was higher for patients with a history of CAG (OR = 1.92, 95%CI 1.67-2.20) and PCI (OR = 1.93, 95%CI 1.67-2.23), but similar in patients with CABG (OR = 1.69, 95%CI 1.37-2.10).ConclusionIHD was associated with a shockable rhythm, with a moderate increase in the association in patients with a CAG or PCI procedure.Copyright © 2018 Elsevier B.V. All rights reserved.

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