title: Mechanism of epidural lidocaine reversal of tachyphylaxis to epidural morphine analgesia.
mesh_terms: D000698:Analgesia; D006801:Humans; D008012:Lidocaine / Q000008:administration & dosage*; D008297:Male; D008875:Middle Aged; D009020:Morphine / Q000008:administration & dosage*; D010148:Intractable Pain / Q000188:drug therapy; D013618:Tachyphylaxis
chemical_list: D009020:Morphine; D008012:Lidocaine