• Resuscitation · Oct 2022

    Observational Study

    Duration of Resuscitation and Long-Term Outcome After In-Hospital Cardiac Arrest: A Nationwide Observational Study.

    • Harman Yonis, Mikkel Porsborg Andersen, Elisabeth Helen Anna Mills, Bo Gregers Winkel, Mads Wissenberg, Lars Køber, Gunnar Gislason, Fredrik Folke, Jacob Moesgaard Larsen, Peter Søgaard, Christian Torp-Pedersen, and Kristian Hay Kragholm.
    • Department of Cardiology, Nordsjællands Hospital, Hillerød, Denmark; Department of Public Health, University of Copenhagen, Denmark. Electronic address: harman@live.dk.
    • Resuscitation. 2022 Oct 1; 179: 267-273.

    BackgroundPrior studies have investigated the association between duration of resuscitation and short-term outcomes following in-hospital cardiac arrest (IHCA). However, it remains unknown whether there is an association between duration of resuscitation and long-term survival and functional outcomes.MethodWe linked data from the Danish in-hospital cardiac arrest registry with nationwide registries and identified 8,727 patients between 2013 and 2019. Patients were stratified into four groups (A-D) according to quartiles of duration of resuscitation. Standardized average probability of outcomes was estimated using logistic regression.ResultsOf 8,727 patients, 53.1% (n = 4,604) achieved return of spontaneous circulation. Median age was 74 (1st-3rd quartile [Q1-Q3] 65-81 years) and 63.1% were men. Among all IHCA patients the standardized 30-day survival was 62.0% (95% CI 59.8-64.2%) for group A (<5 minutes), 32.7% (30.8-34.6%) for group B (5-11 minutes), 14.4% (12.9-15.9%) for group C (12-20 minutes) and 8.1% (7.0-9.1%) for group D (21 minutes or more). Similarly, 1-year survival was also highest for group A (50.4%; 48.2-52.6%) gradually decreasing to 6.6% (5.6-7.6%) in group D. Among 30-day survivors, survival without anoxic brain damage or nursing home admission within one-year post-arrest was highest for group A (80.4%; 78.2-82.6%), decreasing to 73.3% (70.0-76.6%) in group B, 67.2% (61.7-72.6%) in group C and 73.3% (66.9-79.7%) in group D.ConclusionShorter duration of resuscitation attempt during an IHCA is associated with higher 30-day and 1-year survival. Furthermore, we found that the majority of 30-day survivors were still alive 1-year post-arrest without anoxic brain damage or nursing home admission despite prolonged resuscitation.Copyright © 2022 The Author(s). Published by Elsevier B.V. All rights reserved.

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