<prompt> Which of in following is the least common cause of ARDSAspirationSevere pneumonia with sepsisshockAll of above  <response>: Ans. is d i.e., All of above Pulmonary edema not originating from hea Causes Severe pneumonia followed by sepsis MC. Shock Tissue injury Aspiration Toxin Microthrombi Intravascular coagulation, uremia, raise ICT Increase permeability of alveolar capillarymembrane. Feature Initially symptoms are less lung clear. Lateron respiratory distress followed by refractory hypoxia followed by hypercapnia. Moality is high. 