<prompt> All are recognized causes of adult respiratory disress syndrome except:Smoke inhalationMalignant hypeensionGastric aspirationViral pnemonia  <response>: ARDS is associated with non cardiogenic pulmoanary edema.Malignant hypeension will cause development of cardiogenic pulmonary edema. The four most impoant causes of ARDS: Sepsis,diffuse pulmonary infections,gastric aspiration and head injuries. 