Lung Ultrasound in COVID-19 Patients

Study Overview
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Brief Summary
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To assess the prognostic performance of an early global LUS score with respect to the mortality in ICU and duration of ventilation.

Detailed Description
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This is an international multicenter cohort study on data collected between March and April 2020. The first available lung ultrasound examination that used a 12-regions approach was used to calculate the global LUS score. Patients are included if they fulfilled the following criteria: 1) admitted to one of the participating ICU; 2) for invasive ventilation; 3) for respiratory failure due to confirmed COVID-19; and 4) having had a LUS examination performed within the first week of start of invasive ventilation. The primary and secondary outcomes were liberation from invasive ventilation and mortality. Demographic, clinical and outcome variables will be presented as percentages for categorical variables and as medians with interquartile ranges (IQR) for continuous variables. Receiver operating characteristics (ROC) analysis will be used to derive the prognostic discriminatory performance of global LUS score in determining succesful extubation and mortality at day 28. The Youden index will be used to derive the optimal cut-off. The association of global LUS with unfavourable outcomes are analyzed with Cox proportional hazard analysis (for successful extubation and alive at day 28), logistic regression models (mortality at day 28). Hazard ratio or odds ratio with 95% confidence intervals were calculated for each outcome.

Official Title
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Early Lung Ultrasound Score Predicts Duration of Ventilation and ICU Mortality in COVID-19 Invasively Ventilated Patients

Conditions
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Covid19, Ultrasound, ARDS

Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Admitted to an ICU participating in this study between February 1, 2020 and April 30, 2020 Confirmed with reverse transcriptase polymerase chain reaction (RT-PCR) COVID-19 infection Having had received invasive ventilation Having had examined at least once with lung ultrasound under invasive ventilation Exclusion Criteria: Age <18 years First examination with LUS in patients already under extracorporeal membrane oxygenation (ECMO) support.

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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What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Liberation from invasive ventilation | Patient who survived but remained invasively ventilated up to day 28 were marked without event. Patients who survived but were extubated were marked with an event at the day of successful extubation. | 28 days | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Mortality | Patient who survived up to day 28 were marked without event. Patients who survived but were extubated were marked with an event at the day of successful extubation. | 28 days | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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new coronavirus disease, coronavirus disease 2019, lung imaging, lung ultrasound, lung ultrasound score, prognostication, duration of ventilation, mortality