Abstract
Background: Current SARS-COV2 pandemic induces tensions on the health systems and ethical dilemmas. A triage tool is needed to define older patients with individual advantage to be considered for intensive care unit (ICU) transfer.Methods: This multicentre observational cohort study included patients over 60 admitted into 7 ICUs between 7th March and 7th May 2020. The primary objective was to evaluate age impact on 30-day mortality, to construct a multivariate prognostic model. This analysis explores the prediction value of geriatric parameters 1 month before ICU admission. This trial is registered with ClinicalTrials.gov, number NCT04422340.Findings: Among 290 screened patients, 231 were included in the cohort. In univariate analysis, factors associated with decreased day-30 survival were: age>75 (OR 4·82 [95%CI: 2·56-9·06]), three or more CIRS-G grade ≥2 comorbidities (OR 2·49 [95%CI: 1·36-4·56]), impaired ADL (Activities of Daily Living), (OR 4·86 [95%CI: 2·44-9·72]), impaired IADL8 (Instrumental ADL, 8 variables, OR 6·33 [95%CI: 3·31-12·10], p75 (OR 4·64 [95%CI: 2·36-9·39], pInterpretation: Age and IADL8 provide independent prognostic factors for day-30 mortality in patients over 60 admitted in ICU for severe COVID-19 infection. Our triage model proposes 3 classes of day-30 mortality risks: 8-14% for patients younger than 80 with no impairment in IADL, 30-40% for patients either younger than 70 with at least one impairment in IADL8 or older than 80 with no impairment in IADL and 67-88% for patients over 80 with at least one impairment in IADL.Trial Registration: ClinicalTrials platform on June 9, 2020 (NCT04422340).Funding Statement: Hospices Civils de LyonDeclaration of Interests: All the authors declare grants from Hospices Civils de Lyon, during the conduct of the study, no other competing interests with the considered topic. CF reports outside of the present work consulting/advisory roles for GSK, Leo Pharma, Pfizer, MSD Oncology, Teva, AstraZeneca, Baxter, Eisai, Janssen, and Novartis; research funding from Chugai Pharma, Pfizer, Pierre Fabre, and Astellas Pharma; and travel/accommodation/expenses from Janssen Oncology, Pierre Fabre, and Leo Pharma.Ethics Approval Statement: The study protocol (V1.0 of April 7, 2020) was approved by a COVID-19-dedicated Ethics Committee of the Hospices Civils de Lyon on May 12, 2020.
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