• Resuscitation · Dec 2023

    Multicenter Study

    Early and late withdrawal of life-sustaining treatment after out-of-hospital cardiac arrest in the United Kingdom: institutional variation and association with hospital mortality.

    • Savvas Vlachos, Gordon Rubenfeld, David Menon, David Harrison, Kathryn Rowan, and Ritesh Maharaj.
    • King's College London, School of Cardio-Vascular Medicine and Sciences, Strand, London WC2R 2LS, UK. Electronic address: savvas.vlachos@kcl.ac.uk.
    • Resuscitation. 2023 Dec 1; 193: 109956109956.

    AimFrequency and timing of Withdrawal of Life-Sustaining Treatment (WLST) after Out-of-Hospital Cardiac Arrest (OHCA) vary across Intensive Care Units (ICUs) in the United Kingdom (UK) and may be a marker of lower healthcare quality if instituted too frequently or too early. We aimed to describe WLST practice, quantify its variability across UK ICUs, and assess the effect of institutional deviation from average practice on patients' risk-adjusted hospital mortality.MethodsWe conducted a retrospective multi-centre cohort study including all adult patients admitted after OHCA to UK ICUs between 2010 and 2017. We identified patient and ICU characteristics associated with early (within 72 h) and late (>72 h) WLST and quantified the between-ICU variation. We used the ICU-level observed-to-expected (O/E) ratios of early and late-WLST frequency as separate metrics of institutional deviation from average practice and calculated their association with patients' hospital mortality.ResultsWe included 28,438 patients across 204 ICUs. 10,775 (37.9%) had WLST and 6397 (59.4%) of them had early-WLST. Both WLST types were strongly associated with patient-level demographics and pre-existing conditions but weakly with ICU-level characteristics. After adjustment, we found unexplained between-ICU variation for both early-WLST (Median Odds Ratio 1.59, 95%CrI 1.49-1.71) and late-WLST (MOR 1.39, 95%CrI 1.31-1.50). Importantly, patients' hospital mortality was higher in ICUs with higher O/E ratio of early-WLST (OR 1.29, 95%CI 1.21-1.38, p < 0.001) or late-WLST (OR 1.39, 95%CI 1.31-1.48, p < 0.001).ConclusionsSignificant variability exists between UK ICUs in WLST frequency and timing. This matters because unexplained higher-than-expected WLST frequency is associated with higher hospital mortality independently of timing, potentially signalling prognostic pessimism and lower healthcare quality.Copyright © 2023 The Author(s). Published by Elsevier B.V. All rights reserved.

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