The best way to titrate positive end-expiratory pressure (PEEP) in patients suffering from acute respiratory distress syndrome is still matter of debate. Electrical impedance tomography (EIT) in a non-invasive technique that could guide PEEP setting based on an optimized ventilation homogeneity.

COVID-19 related ARDS patients admitted to the ICU in March 2021 requiring mechanical ventilation were enrolled. Patients were monitored by an esophageal catheter and a 32-electrode EIT device. Within 48 hours after the start of mechanical ventilation, different levels of PEEP were applied based upon PEEP/ Fraction of inspired oxygen tables, positive end-expiratory transpulmonary (PL)/ FiO2 table, and EIT. Respiratory mechanics variables were recorded.

Inclusion Criteria:

• COVID19-related ARDS under invasive mechanical ventilation

Exclusion Criteria:

• none

Consecutive adult patients under mechanical ventilation following COVID19-ARDS