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Variability in functional outcome and treatment practices by treatment center after out-of-hospital cardiac arrest: analysis of International Cardiac Arrest Registry

May, Teresa L.; Lary, Christine W.; Riker, Richard R.; Friberg, Hans; Patel, Nainesh; Søreide, Eldar; McPherson, John A.; Undén, Johan; Hand, Robert; Sunde, Kjetil; Stammet, Pascal; Rubertsson, Stein; Belohlvaek, Jan; Dupont, Allison; Hirsch, Karen G.; Valsson, Felix; Kern, Karl; Sadaka, Farid; Israelsson, Johan; Dankiewicz, Josef; Nielsen, Niklas; Seder, David B.; Agarwal, Sachin
Journal article, Peer reviewed
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URI
https://hdl.handle.net/11250/2738645
Date
2019
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  • Department of Clinical Medicine [1529]
  • Registrations from Cristin [5446]
Original version
Intensive Care Medicine. 2019, 45, 637–646   10.1007/s00134-019-05580-7
Abstract
Purpose

Functional outcomes vary between centers after out-of-hospital cardiac arrest (OHCA) and are partially explained by pre-existing health status and arrest characteristics, while the effects of in-hospital treatments on functional outcome are less understood. We examined variation in functional outcomes by center after adjusting for patient- and arrest-specific characteristics and evaluated how in-hospital management differs between high- and low-performing centers.

Methods

Analysis of observational registry data within the International Cardiac Arrest Registry was used to perform a hierarchical model of center-specific risk standardized rates for good outcome, adjusted for demographics, pre-existing functional status, and arrest-related factors with treatment center as a random effect variable. We described the variability in treatments and diagnostic tests that may influence outcome at centers with adjusted rates significantly above and below registry average.

Results

A total of 3855 patients were admitted to an ICU following cardiac arrest with return of spontaneous circulation. The overall prevalence of good outcome was 11–63% among centers. After adjustment, center-specific risk standardized rates for good functional outcome ranged from 0.47 (0.37–0.58) to 0.20 (0.12–0.26). High-performing centers had faster time to goal temperature, were more likely to have goal temperature of 33 °C, more likely to perform unconscious cardiac catheterization and percutaneous coronary intervention, and had differing prognostication practices than low-performing centers.

Conclusions

Center-specific differences in outcomes after OHCA after adjusting for patient-specific factors exist. This variation could partially be explained by in-hospital management differences. Future research should address the contribution of these factors to the differences in outcomes after resuscitation.
Publisher
Springer
Journal
Intensive Care Medicine
Copyright
Copyright 2019 Springer

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