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. 2017 Oct 31;26(6):573–578. doi: 10.1159/000484693

Table 4.

NRS scores and total morphine consumption

NRS score at 2 h NRS score at 6 h NRS score at 18 h NRS score at 24 h Total morphine consumption, mg
Low VT-PEEP (n = 24) 2 (2–3) 2 (2–3) 1 (1–3) 1 (0–2) 20 (18–25)
High VT-ZEEP (n = 20) 2 (1–3) 2 (1–2) 1 (0–2) 1 (0–2) 20 (17–26.25)
p 0.948 0.932 0.804 0.663 0.804

Values are presented as medians (range) unless otherwise stated. NRS, numerical rating scale; VT, tidal volume; PEEP, positive end-expiratory pressure; ZEEP, zero end-expiratory pressure.