This study intends to study the optimal dose induced by etomidate in outpatients undergoing
painless hysteroscopic surgery. At present, the dosage in the user manual is 0.1-0.3mg/kg. In
clinical use, it is found that 0.1mg/kg often fails to achieve sedative effect, and 0.3mg/kg
is prone to muscle twitching. Therefore, three groups of doses of 0.15mg/kg, 0.2mg/kg and
0.25mg/kg are set. It is hoped that this study will provide a basis for clinical evaluation
of etomidate in anesthesia induction of hysteroscopic surgery.