“…One paper (Jenstrup et al, 1990) defines recovery time as the interval from extubation to the time when the patient can give his/her correct date of birth. Some papers (Scheepstra et al, 1989;Struys et al, 2001) use awaking time (i.e., time from end of infusion to the patient opening his/her eyes, having the orientation, giving the correct date of birth, or obeying a command) to define the recovery time. In this paper, we have taken the latter definition and calculate the recovery time from the end of administering anaesthetic drugs to the patient obeying a command.…”