title: Difficulties in the treatment of acute pulmonary embolism.
mesh_terms: D000208:Acute Disease; D005343:Fibrinolytic Agents / Q000627:therapeutic use; D006493:Heparin / Q000008:administration & dosage; D006801:Humans; D010690:Phlebography; D011655:Pulmonary Embolism / Q000000981:diagnostic imaging / Q000188:drug therapy / Q000628:therapy*
chemical_list: D005343:Fibrinolytic Agents; D006493:Heparin