Owen H, Szekely S M, Plummer J L, Cushnie J M, Mather L E
Department of Anaesthesia and Intensive Care, Flinders University of South Australia, Bedford Park.
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.