Conscious sedation, which is not the same thing as general anesthesia, is often used for endoscopy:
https://www.northerncarealliance.nhs.uk/patient-information/...
And sometimes it doesn't work. Patients are then given the option of going ahead without sedation, or rescheduling for general anaesthesia.
And sometimes it doesn't work. Patients are then given the option of going ahead without sedation, or rescheduling for general anaesthesia.