It might be necessary with Sars-Cov2 pneumopathy patient to repeat thoracic images, the tomodensitometry ones in particular. This task is difficult and nearly impossible for several reasons: respiratory and hemodynamic unstable patient, prone position and due to the high contagious nature of the disease.

The lung ultrasound is an easy tool, fast (between 5 and 10 minutes) and as a limited training.

In the context of the Sars-Cov2 epidemic, Buonsenso and al case report depict the first lung ultrasound for a Covid 19 patient.

Peng and al in Intensive Care Medicine accentuate the usefulness of this particular technic.

In the American Journal of Respiratory and Critical Care Medicine, a study has been published as a point-of-care, in which the doctors reported using the lung ultrasound with intensive and critical care patient.

In Critical Care 2016, it has been showed that ultrasound allowed with neat precisions, to predict severe ARDS patient response to the prone position, all-cause.

Another researchers team found a good correlation between lung ultrasound, the SOFA, APACHE II, CPIS score, and patient mortality.

And a new applicability in the pulmonary recruitment by PEEP titration has been presented.

The aim of this study is to evaluate the lung ultrasound in Covid19 ARDS.

Inclusion Criteria:

• Diagnosed Sars-Cov2 patient, with PCR method qualitative or quantitative as usual.
• Intensive or critical care admission
• ARDS with PaO2/FiO2 <300 at the admission
• Ventilatory support or oxygen-therapy

Exclusion Criteria:

• Age < 18 years-old
• Pregnancy
• Patient with tutor- or curatorship or in prison

Patient with diagnose of Covid 19 by usully method, and admitted in critical care unit for oxygen-therapy or ventilatory support.

No data sharing plan has been established