Fig. 2

Decay curves were similar for all gases (isoflurane: y = 29.691e-0.028x; sevoflurane: y = 22.508e-0.024x; desflurane: y = 24.956e-0.025x). R²: exponential function with linear regression; calculations started after the maximum concentration was reached (red brackets). The recovery time was 52 min (dotted black line). N = 5 per anesthetic gas