Efficacy and Safety of Sivelestat Sodium and Dexamethasone in the Treatment of ARDS

Sevilastat sodium 4.8 mg/kg/d IV continuous infusion for 14 days or ICU length of stay (within 14 days)

Dexamethasone 10 mg IV once a day for 5 days or until extubation (within 5 days)

Sivelestat sodium placebo 4.8 mg/kg/d IV continuous infusion for 14 days or ICU length of stay (within 14 days)

Dexamethasone placebo 10 mg IV once a day for 5 days or until extubation (within 5 days)