A Study of the Correlation Between the Debilitating State of the Elderly and Propofol Sensitivity

Fifteen minutes after the subarachnoid block, propofol was pumped in at a rate of 20 mg/kg/h with a micro pump, and the pumping rate was reduced to 10 mg/kg/h after 1 min. The infusion was stopped when the consciousness disappeared, and the time of the disappearance of consciousness was observed (time of the disappearance of eyelash reflex).