Block of the sacral segments in lumbar epidural anaesthesia M. Arakawa, Y. Aoyama, Y. Ohe British Journal of Anaesthesia Volume 90, Issue 2, Pages 173-178 (February 2003) DOI: 10.1093/bja/aeg045 Copyright © 2003 British Journal of Anaesthesia Terms and Conditions
Fig 1 Changes of the pain threshold. Values are mean (sd). L2 segment: there were no significant differences among the groups. S1 segment: *P<0.05 compared with the lidocaine–epinephrine group. (Repeated measures anova, post hoc test; Bonferroni adjustment.) There was a statistically significant difference between the S1 segment and both the L2 and S3 segments at 20 min in the lidocaine–epinephrine group (P<0.01, symbol not shown). S3 segment: *P<0.05 compared with the lidocaine–epinephrine group. ##P<0.01 compared with the lidocaine group. (Repeated measures anova, post hoc test; Bonferroni adjustment.) British Journal of Anaesthesia 2003 90, 173-178DOI: (10.1093/bja/aeg045) Copyright © 2003 British Journal of Anaesthesia Terms and Conditions
Fig 2 The onset of sensory block. L2 segment: There were no significant differences among the groups. The mean onset time of sensory block for the lidocaine–epinephrine–bicarbonate group was 12.5 (sd 5.3). S1 segment: *P<0.05 compared with the lidocaine group (survival analysis, log rank test). The mean onset time of sensory block for the lidocaine–epinephrine–bicarbonate group was 16.6 (4.2). S3 segment: #P<0.05 compared with the lidocaine group (survival analysis, log rank test). The mean onset time of sensory block for the lidocaine–epinephrine–bicarbonate group was 12.5 (6.6). British Journal of Anaesthesia 2003 90, 173-178DOI: (10.1093/bja/aeg045) Copyright © 2003 British Journal of Anaesthesia Terms and Conditions