title: Selective spinal analgesia.
mesh_terms: D000698:Analgesia / Q000379:methods*; D000767:Anesthesia, Epidural / Q000379:methods*; D004824:Epidural Space; D006801:Humans; D007278:Injections, Spinal; D008614:Meperidine / Q000008:administration & dosage*; D010148:Intractable Pain / Q000188:drug therapy*; D010149:Postoperative Pain / Q000188:drug therapy*
chemical_list: D008614:Meperidine