Perforated duodenal ulcer presenting as acute respiratory failure.
D001784:Blood Gas Analysis; D006801:Humans; D008297:Male; D008875:Middle Aged; D010439:Peptic Ulcer Perforation / Q000150:complications* / Q000601:surgery; D010538:Peritonitis / Q000150:complications*; D011656:Pulmonary Emphysema / Q000150:complications*; D012140:Respiratory Tract Diseases / Q000209:etiology*; D013529:Surgical Wound Dehiscence / Q000601:surgery