SummaryWe examined whether pre-operative information benefited patients receiving patient-controlled analgesia (PCA) after major surgery. We investigated whether patients felt better informed about PCA and also whether pre-operative information altered the use of PCA, the adequacy of pain relief, worries about addiction and safety, and knowledge of side-effects. We investigated the effectiveness of information provided in two ways, namely by a patient-determined leaflet or an interview by a trained nurse from the pain team, compared with routine pre-operative information. We studied 225 patients, 75 in each group. Patients in the leaflet group were better informed about PCA, became familiar with using PCA more quickly and were less confused about PCA than the control group. However, there were no effects on pain relief, worries about addiction and safety, and knowledge of side effects. The pre-operative interview resulted in no benefits. Our findings indicate that the detailed provision of pre-operative information failed to improve patients' experiences of PCA. Patient-controlled analgesia (PCA) has been adopted widely for the treatment of postoperative pain. We have argued that the patients' experiences of PCA are paramount in evaluating this transfer of pain relief from medical ⁄ nursing staff to the patient. In an assessment by 200 patients, the response to PCA was favourable overall with good pain relief but with fears of addiction and overdose [1]. These worries affected over a third of patients and restricted the use of PCA in a quarter of patients. Side effects of morphine were common (91% patients experienced at least one unpleasant side-effect) and constrained its use and hence effectiveness in treating patients' pain. However, a feature of this study was the lack of pre-operative information provided for the patients; 40% patients recalled that the information given was inadequate. It is possible therefore that good preoperative information might improve patients' experience of PCA.Previous studies found little benefit of pre-operative education on patients' use of PCA [2,3]. However, the nature of the information was determined by the clinical staff, and often failed to address key areas of concern for the patient [4,5]. We described recently how the content of a patient information leaflet was determined by patients and reflected their needs and worries [6].The aim of the study was to examine whether preoperative information benefited patients. Firstly, we sought to determine whether patients felt better informed about PCA. Second, we examined whether preoperative information helped in other ways: use of PCA, adequacy of pain relief, knowledge of side effects, and worries about overdose and addiction. Third, we compared the effectiveness of information provided in two ways, by a patient-determined leaflet or a trained nurse from the acute pain team, with routine pre-operative information.
Ó 2004 Blackwell Publishing Ltd
Methods
PatientsConsecutive patients, who would receive PCA routinely, were app...