The train-of-four (TOF) ratio should return to at least 90% to exclude potentially clinically significant postoperative residual block. The time gap between clinical recovery (subjective) until objective recovery (i.e. TOF ratio has returned to _0.90) can be considered “the potentially unsafe period of recovery
To determine the time difference (from giving the reversal drugs till reach TOF90% readings by acceleromyography) between patients maintained on propofol and those maintained on halothane.
PATIENTS AND METHOD:
A prospective clinical trial study100 females underwent caesarian section divided into inhalational anaesthesia group (maintained on inhalational anaesthesia-halothane) and propofol group (maintained on propofol infusion after delivery of the baby till the end of operation) then recovery is monitored using acceleromyography.
Times from giving reversal of the muscle relaxant till extubation and time from giving reversal till reading of TOF90% were significantly lower in propofol group than in inhalational group.
Patients maintained on propofol was extubated earlier than those maintained on inhalational anaesthesia also needed less time to reach TOF90% i.e. inhalational anaesthesia augment muscle relaxation more than propofol.