Low dose intrathecal morphine effects on post‐hysterectomy pain: a randomized placebo‐controlled study

Spinal anesthesia with different doses of intrathecal morphine has been shown to relieve post‐operative pain. We studied in a prospective randomized, double‐blind fashion the effects of morphine 0, 100, 200, or 300 μg added to intrathecal bupivacaine on first post‐operative 24 h patient‐controlled analgesia morphine (PCA‐morphine) consumption after abdominal hysterectomy under general anesthesia.

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