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Randomised controlled trial of patient controlled analgesia compared with nurse delivered analgesia in an emergency department

Emergency Department, Southampton General Hospital, Southampton, UK

Correspondence to:
Correspondence to:
Mr M Clancy
Emergency Department, Southampton General Hospital, Tremona Road, Southampton SO16 6YD, UK; mikeclancy{at}suht.nhs.uk

Objective: To compare effectiveness, safety, and patient satisfaction of patient controlled analgesia (PCA) with titrated, intravenous opioid injections for the management of acute traumatic pain in the emergency department (ED).

Methods: The study took place in the ED of a teaching hospital. Patients suffering traumatic injury requiring opioid analgesia, and meeting other inclusion criteria, were consented and randomised to either the study group or control group. The study group were given morphine through the PCA system, whereas the control group were given morphine via the conventional route of nurse titration. Pain levels were measured using a visual analogue scale. Both groups had their vital signs (blood pressure, pulse, oxygen saturations, Glasgow coma score, respiratory rate) and pain scores monitored at 0, 15, 30, 45, 60, 90, and 120 minutes, and any adverse events were noted. Patients were followed up with a questionnaire asking about their experience of pain relief in the department.

Results: 86 patients were recruited to the study, 43 in each group. There was no significant difference between the groups in terms of pain relief (p = 0.578) and patient satisfaction (p = 0.263). No severe adverse events were observed, although 20.7% (n = 9) of the PCA group experienced mild sedation compared with 7% (n = 3) of the control group.

Conclusions: PCA is at least as effective as titrated intravenous injections for relief of traumatic pain. It has considerable potential for use in the ED.

Abbreviations: ED, emergency department; PCA, patient controlled analgesisa; VAS, visual analogue scale; GCS, Glasgow coma score

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