203
Participants
Start Date
August 14, 2020
Primary Completion Date
September 30, 2021
Study Completion Date
September 30, 2021
Butorphanol Injection
Inject 10 μg/kg of butorphanol, then propofol is injected until the patient's eyelash reflex disappears before performing colonoscopy
Saline
Inject saline and propofol until the patient's eyelash reflex disappears before performing colonoscopy
Beijing Tiantan Hospital, Beijing
Beijing Tiantan Hospital
OTHER