CRP and acute respiratory distress syndrome: Previous studies showed the following risk factors for MV in COVID-19 patients: acute respiratory distress syndrome [8], lower antithrombin levels [17], hypercoagulative state on viscoelastic tests [18], disseminated intravascular coagulopathy (DIC) [19], lower ratio of oxygen saturation (ROX) index [10, 20, 21], older age [22], male sex [22], higher C-reactive protein [23] and LDH [21] levels, lower serum creatinine levels [21], and higher D-dimer levels [24].