<prompt> All are seen in ARDS, except :Pulmonary edemaDecreased tidal volumeHypercapniaDecreased compliance  <response>: Answer is C Hypercapnia: ARDS results in Type I Respiratory failure and is characterized by normal or low PaCO2 Hypocapnia and not Hypercapnia see previous explanation on types of respiratory failure. ARDS Acute Respiratory distress syndrome ARDS is an acute form of lung injury characterized by: Increased permeability of alveolar capillary membrane. Diffuse alveolar damage. Accumulation of proteinaceous pulmonary edema non cardiogenic pulmonary edema Q 