Observational indicators
delirium
The primary outcome was the median effective dose (EDSecondary outcomes were as follows: total dosage of propofol; HR, SpOThe arousal time was defined as the period between gastroscopy extraction and the time when the children could open their eyes and cooperate. Arousal time exceeding 30 min implied delayed awakening. The Paediatric Anaesthesia Emergence Delirium(PAED) scale was used to evaluate the emergence delirium in children. SpO