Figure 1From: Gabapentin and postoperative pain: a qualitative and quantitative systematic review, with focus on procedure Reduction in post-operative morphine requirements with gabapentin vs. placebo. Data are calculated from the mean consumption of patient controlled analgesia (PCA) (21,23,24,25,26,27,28,30,36,37), 'on demand' administered analgesia (29,34) or analgesia 'administered at home by the patient' (43) in each study group from 0 to 24 h post-operatively.Back to article page