Author: Ahlstrand, E.; Cajander, S.; Cajander, P.; Ingberg, E.; Lof, E.; Wegener, M.; Liden, M.
Title: Visual Scoring of Chest CT at Hospital Admission Predicts Hospitalization Time and Intensive Care Admission in Covid-19 Cord-id: 8hmnawp4 Document date: 2020_11_3
ID: 8hmnawp4
Snippet: Background The extent and character of lung involvement on chest computerized tomography (CT) have a prognostic value in covid-19 but there is lack of consensus on how to assess and stage CT features. A scoring system of lung involvement in covid-19, Orebro covid-19 Scale (OCoS) was implemented in clinical routine on April 1 2020 in Orebro Region, Sweden. The OCoS-severity score measures the extent of lung involvement while OCoS-temporal stage characterizes the parenchymal involvement. The objec
Document: Background The extent and character of lung involvement on chest computerized tomography (CT) have a prognostic value in covid-19 but there is lack of consensus on how to assess and stage CT features. A scoring system of lung involvement in covid-19, Orebro covid-19 Scale (OCoS) was implemented in clinical routine on April 1 2020 in Orebro Region, Sweden. The OCoS-severity score measures the extent of lung involvement while OCoS-temporal stage characterizes the parenchymal involvement. The objective of the present study was to evaluate the OCoS scores in relation to clinical outcome of covid-19. Methods Population based study including data from all hospitalized patients with covid-19 in Orebro Region during March to July 2020. Chest CT scores at the time of hospital admission and ICU admission were analyzed in relation to hospital and intensive care unit (ICU) length of stay, time to ICU admission and admission to ICU or death. Findings In the 381 included patients, there was a close correlation of the OCoS-severity score on admittance to hospital and the hospital length of stay. The OCoS-severity score on hospital admittance was a strong predictor for both a severe outcome in regards to ICU admittance or death and the time to ICU admittance. On admittance to ICU, both OCoS-severity score and temporal stage were correlated with the ICU length of stay. Interpretation Chest CT visual scoring on admission to hospital predicts the clinical course in covid-19 pneumonia. Funding This work was supported by the Orebro Region, Sweden.
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