Fig. 4.
Distribution of nociception level values during nociception level–guided analgesia (A) and during standard clinical care (B). The colors represent the percentage of patients ranging from dark blue (0%) to dark red (30%); see legend bars. The data are the 5-s outputs of the nociception level device. The data are aligned at intubation (t = 0 min). In the nociception level–guided group more patients fall in the designated limits of nociception level 10 to 25 as apparent by more light blue to yellow color; the equal amounts of dark blue and dark red are the manifestation of no difference between groups in nociception level values less than 10 and greater than 25.