Most common abnormality associated with ARDS: (A) Hypoxemia, (B) Hypercapnea, (C) Diffuse alveolar damage, (D) Bilateral alveolar infiltrates
Answer is A. The most common feature associated with ARDS is hypoxaemia,i.e.,the aerial Po2(mm Hg)/FIo2 (inspiratory O2 fraction) Reference:Harrison's Medicine- 20edition,page no:2031