<prompt> Most common abnormality associated with ARDSHypoxemiaHypercapneaDiffuse alveolar damageBilateral alveolar infiltrates  <response>: The most common feature associated with ARDS is hypoxaemia,i.e.,the aerial Po2mm HgFIo2 inspiratory O2 fraction Reference:Harrisons Medicine- 20edition,page no:2031 