Figure 1
Time-course of the first (T1) and the fourth twitch (T4) in two subjects following the injection of vecuronium. The dose of vecuronium was 15 μg·kg-1 in one subject (filled symbols) and 35 μg·kg-1 in the second subject (open symbols, upper panel). The dotted line parallel with the Time axis indicates twitch = 0.1. The lower panel presents the T4/T1 ratios as a function of T1 for the same two subjects. The loops commence at T1 = 1.0 and T4/T1 = 1.0 and then follow the direction indicated by arrows. The dotted line parallel with the T4/T1 axis indicates T1 = 0.1.