title: Nasogastric warnings.
mesh_terms: D002245:Carbon Dioxide / Q000097:blood; D004750:Enteral Nutrition; D006801:Humans; D006863:Hydrogen-Ion Concentration; D007440:Intubation; D010100:Oxygen / Q000097:blood; D010313:Partial Pressure
chemical_list: D002245:Carbon Dioxide; D010100:Oxygen