CNS depression from intrathecal morphine.
D000328:Adult; D000368:Aged; D000767:Anesthesia, Epidural; D002045:Bupivacaine; D002490:Central Nervous System / Q000187:drug effects*; D004305:Dose-Response Relationship, Drug; D006801:Humans; D007278:Injections, Spinal; D008875:Middle Aged; D009020:Morphine / Q000008:administration & dosage / Q000009:adverse effects*; D013997:Time Factors
D009020:Morphine; D002045:Bupivacaine