Variables of patient-controlled analgesia. 2. Concurrent infusion

Anaesthesia. 1989 Jan;44(1):11-3. doi: 10.1111/j.1365-2044.1989.tb11088.x.


The effectiveness of morphine after surgery by patient-controlled analgesia alone or with a concurrent infusion was studied. The infusion did not reduce the dose of self-administered analgesic and patients treated in this way received twice as much drug as those who used patient-controlled analgesia alone. Pain control was similar in both groups. The practice of patient-controlled analgesia plus infusion requires critical review.

MeSH terms

  • Abdomen / surgery
  • Adult
  • Female
  • Humans
  • Infusions, Intravenous
  • Middle Aged
  • Morphine / administration & dosage*
  • Morphine / adverse effects
  • Morphine / therapeutic use
  • Nausea / chemically induced
  • Pain, Postoperative / drug therapy*
  • Self Administration


  • Morphine