<prompt> Which of the following is NOT seen in ARDS:March 2013Pulmonary edemaHypercapniaHypoxemiaStiff lung  <response>: Ans. B i.e. HypercapniaARDS Diffuse alveolar damage Shock lungHypoxia,Hypocapnia,Acute onset of respiratory failure,Ground glass appearance on chest X-rayAir bronchogram sign is positiveAssociated with:Pancreatitis,- Trauma,- Multiple blood transfusions etc. 