Fig. 3From: Virtual reality vs. Kalinox® for management of pain in intensive care unit after cardiac surgery: a randomized studyNRS pain variation during procedure. NRS pain (0–10) in the VR and Kalinox groups before, immediately after, and 10 min after chest drain removal. Data are represented as median with interquartile range. NRS numerical rating scale, VR virtual realityBack to article page