• Respiratory care · Jul 2022

    Prognostic Value of the Intensive Care Respiratory Distress Observation Scale on ICU Admission.

    • Maxens Decavèle, Isabelle Rivals, Romain Persichini, Julien Mayaux, Laure Serresse, Capucine Morélot-Panzini, Martin Dres, Alexandre Demoule, and Thomas Similowski.
    • Sorbonne Université, INSERM, UMRS1158 Neurophysiologie Respiratoire Expérimentale Clinique, F-75005 Paris, France; and Groupe Hospitalier Universitaire APHP-Sorbonne Université, site Pitié-Salpêtrière, Service Médecine Intensive et Réanimation (Département R3S), F-75013 Paris, France. maxens.decavele@aphp.fr.
    • Respir Care. 2022 Jul 1; 67 (7): 823832823-832.

    BackgroundThe association between dyspnea and mortality has not been demonstrated in the ICU setting. We tested the hypothesis that dyspnea (self-reported respiratory discomfort) or its observational correlates (5-item intensive care Respiratory Distress Observation Scale [IC-RDOS]) assessed on ICU admission would be associated with ICU mortality.MethodsAncillary analysis of single-center data prospectively collected from 220 communicative ICU subjects allocated to a derivation cohort of 120 subjects and a separate validation cohort of 100 subjects. Dyspnea was assessed dichotomously (yes/no), with a dyspnea visual analog scale (measured in mm), and IC-RDOS was calculated. Multivariate logistic regression was used to identify factors associated with ICU and hospital mortality.ResultsDyspnea was reported by 69 (58%; median 45 [interquartile range [IQR] 32-60] mm) and 47 (47%; 38 [IQR 26-48] mm) subjects in the derivation and validation cohorts, respectively. IC-RDOS was 2.3 (1.2-3.1) and 2.4 (1.3-2.8), respectively. IC-RDOS values were higher in subjects with dyspnea than in subjects without dyspnea in both the derivation cohort (2.6 [2.2-4.6] vs 1.4 [0.9-2.4], P < .001) and the validation cohort (2.6 [2.3-4.4] vs 2.2 [1.0-2.8], P < .001). On multivariate analysis of the derivation cohort, admission for hemorrhagic shock (odds ratio 13.98), IC-RDOS (odds ratio 1.77), and Simplified Acute Physiology Score II (odds ratio 1.10) was associated with ICU mortality. Areas under the receiving operating characteristic curve of IC-RDOS to predict ICU mortality were 0.785 and 0.794 in the derivation and validation cohorts, respectively.ConclusionsIC-RDOS, an observational correlate of dyspnea, but not dyspnea itself, was associated with higher mortality in ICU subjects.Copyright © 2022 by Daedalus Enterprises.

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