Fig. 4

Apnoea times (in min) with the standard regimen of succinylcholine (1.0 mg kg^− 1) compared with different experimental regimens. The time from injection of succinylcholine until first diaphragmatic movement or until obvious recognizable end-tidal CO2 waveforms appearing on the monitor was used as a surrogate of apnoea time. MD = mean difference; CI = confidence interval; n/a = not applicable (no data reported)