Fig. 1From: The effect of fresh gas flow rate and type of anesthesia machine on time to reach target sevoflurane concentrationThe Fi/Ft ratio curves at variable rate of fresh gas flow (FGF) and different types of anesthesia machine (Primus®, Perseus®, and Zeus® [Zeus®-F; Zeus® fresh gas mode, Zeus®-A; Zeus® auto-mode]). The Fi is the sevoflurane concentration measured at the Y-piece of breathing circuit, while the Ft is the target sevoflurane concentration.)Back to article page