Fig. 14. The vasoconstriction threshold during light sevoflurane anesthesia was significantly less in elderly (35.8°± 0.3°C, n = 10) than in younger patients (35.0°± 0.5°C, n = 10) (  P < 0.01).  Open circles indicate the vasoconstriction threshold in each patient;  filled squares indicate the mean and SD in each group. From Ozaki  et al. 152; used with permission. Copyright © 1997. Lippincott Williams & Wilkins.