RALE Versus CORADS/CT-Severity Score in COVID-19

Study Overview
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Brief Summary
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Rationale Patients with severe coronavirus disease 2019 (COVID-19) frequently fulfill the criteria for acute respiratory distress syndrome (ARDS), with extensive and bilateral abnormalities on the chest radiography (CXR) and the chest computed tomography (CT) abnormalities. The 'Radiographic Assessment of Lung Edema' (RALE) score, the 'COVID-19 Reporting and Data System' (CO-RADS) score, and the 'CT severity score' may all have prognostic value in critically ill patients with acute respiratory failure due to COVID-19. Objectives To compare the prognostic value of the RALE score, the CO-RADS score and the CT severity score in critically ill patients with ARDS due to COVID-19. Hypotheses The RALE score, the CO-RADS score and the CT severity score have prognostic value (primary). The RALE score, the CO-RADS score and the CT severity score correlate well. Study design National, retrospective observational study. Study population Critically ill COVID-19 patients with acute respiratory failure, who received at least one CXR and one chest CT scan during critical illness. Method CXRs are visually scored by two independent investigators, using the RALE score approach. Chest CT scans are scored by an independent radiologist, using the CO-RADS score and the CT severity score. Demographic, ventilation and outcome data are captured from the hospital systems. Main study parameters/endpoints ICU mortality (primary) and hospital-, 28-, 90-mortality, the number of days alive and free from invasive ventilation, duration of ventilation in survivors, and length of stay in ICU and hospital. Nature and extent of the burden and risks associated with participation, benefit and group relatedness Participants will not directly benefit from participation, but burden is absent. The CRX and chest CT scans have already been obtained as part of routine clinical care. Collecting CXR for RALE scoring and chest CT scans for CO-RADS and CT severity scoring, clinical and outcome data is of no harm for individual patients.

Official Title
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The Prognostic Value of the Abnormalities on the Chest Radiography Versus the Chest Computed Tomography in Critically Ill COVID-19 Patients - Protocol for a National Study Comparing the RALE With the CORADS and CT-Severity Score

Conditions
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COVID-19 Pneumonia

Intervention / Treatment
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* Diagnostic Test: RALE score vs. severity score


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: admitted to the intensive care unit of the Amsterdam UMC, location 'AMC', between March 1, 2020 and May 31, 2020 (the first 3 months of the first wave of the national outbreak in the Netherlands) and between October 1, 2020 and December 31, 2020 (the first 3 months of the second wave in the Netherlands); RT-PCR confirmed coronavirus diseases 2019 (COVID-19); and having had received at least one chest radiograph (CXR) and one adjacent chest computed tomography (CT) scan during the period a patient was having acute respiratory failure. Exclusion Criteria: Age < 18 years.

Ages Eligible for Study
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Minimum Age: 18 Years

Sexes Eligible for Study
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All

Study Plan
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How is the study designed?
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Arms and Interventions

| Intervention/Treatment |
| --- |
|Diagnostic Test: RALE score vs. severity score|RALE score vs. severity score and CORADS|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| ICU mortality | The ICU mortality with a maximum of 90 days | 90 days | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| hospital mortality | The hospital mortality with a maximum of 90 days | 90 days | 
| 28-day mortality | The 28-day mortality | 28 days | 
| 90-day mortality | The 90-day mortality | 90 days | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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RALE score, severity score, CORADS