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Table 2 Postoperative intravenous morphine requirement and pain scores in recovery room.

From: Comparative effect of intraoperative propacetamol versus placebo on morphine consumption after elective reduction mammoplasty under remifentanil-based anesthesia: a randomized control trial [ISRCTN71723173]

  Placebo Group (n = 17) Propacetamol Group (n = 19) p value
Morphine consumption in recovery room (mg) 16 [8–34] 10 [6–28] 0.01
Delay between extubation and first morphine administration (min) 5 [5–20] 5 [5–15] NS
SNPS score five minutes after extubation 6 [0–9] 6 [0–10] NS
SNPS score one hour after extubation 3 [2–6] 2 [0–4] 0.003
Delay between extubation and obtaining a SNPS score < 4 (min) 40 [20–85] 30 [15–70] 0.02
  1. Data are expressed as median [25th–75th percentile]. P < 0.05 was considered as statistically significant. Pain score was evaluated on using a Simplified Numerical Pain Scale (SNPS: from 0, no pain to 10 the worse pain).