Acute Lung Injury/Acute Respiratory Distress Syndrome (ARDS)

The main objective is to determine the short-term effect of prone positioning in infants with infection-associated severe acute respiratory distress syndrome. The investigators compare oxygenation parameters and measurements from electrical impedance tomography (EIT) and lung ultrasonography (LUS) in mechanically ventilated infants in prone position versus supine position after surfactant administration.

Hospitalized patients with ARDS will be randomized to intravenous treatment with a monoclonal antibody against CD14, called IC14, or placebo. They will be followed for 28 days. The primary outcome is the day 4 oxygenation index assessed as a continuous measure.

1. Construct a structured clinical data and biosample information platform for Chinese patients with acute lung injury/ acute respiratory distress syndrome. 2. By deciphering the heterogeneity of patients with acute lung injury/ acute respiratory distress syndrome, achieve clinical, longitudinal physiological, and biological sub-phenotyping to guide individualized precision treatment and improve prognosis.

A single-center prospective observational study will be conducted with the aim of determining the prevalence of venous congestion during ARDS using venous Doppler and the VExUS score.