title: A word of caution on implantable delivery systems.
mesh_terms: D000775:Anesthesia, Spinal / Q000009:adverse effects / Q000451:nursing*; D006801:Humans; D007260:Infusion Pumps / Q000451:nursing*; D009294:Narcotics / Q000008:administration & dosage*
chemical_list: D009294:Narcotics