title: Serum theophylline levels with oral sustained release theophylline after transfer from intravenous aminophylline in patients with chronic lung disease.
mesh_terms: D000368:Aged; D000628:Aminophylline / Q000627:therapeutic use*; D003692:Delayed-Action Preparations; D006801:Humans; D008173:Lung Diseases, Obstructive / Q000188:drug therapy*; D008297:Male; D008875:Middle Aged; D013806:Theophylline / Q000008:administration & dosage* / Q000097:blood
chemical_list: D003692:Delayed-Action Preparations; D000628:Aminophylline; D013806:Theophylline