A Double-Blind Comparison of Parenteral Morphine, Placebo, and Oral Fenoprofen in Management of Postoperative Pain

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Abstract
A double-blind study comparing parenteral morphine, 8 mg, with parenteral placebo and with oral fenoprofen, 200 mg, for the relief of postoperative pain following outpatient surgery was undertaken in 90 patients. The study drugs were administered within 2 hours of the operation and the Visual Analogue Scale was used to assess pain intensity. Patients given placebos showed minimal change in mean pain intensity, whereas patients who received morphine had significantly less pain at all assessment periods. Pain relief in patients who received fenoprofen was, for the first 2 hours, better than following placebo but not as good as following morphine, but thereafter, there was no significant difference between the morphine and fenoprofen and both were significantly better than placebo. It is concluded that oral analgesics may be a useful alternative to the traditional parenteral analgesics for outpatient surgery.

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