An audit of postoperative intravenous patient-controlled analgesia with morphine: evolution over the last decade.

The development and refinement of an acute pain service based on the increased availability of clinical evidence would be expected to improve the quality of postoperative pain control. This report reviews the application of postoperative patient-controlled analgesia (PCA) using intravenous morphine in a single institution between 2002 and 2005. More than 5000 patients were evaluated and the results were compared with a similar study performed 10 years ago.