Patient's Satisfaction of Bispectral Index-guided Monitored Anesthesia Care

A Prospective Randomized Controlled Trial on the Patient's Satisfaction of Bispectral Index-guided Monitored Anesthesia Care

The investigators will evaluate the effect of bispectral index-guided titration of sedation during ear surgery under monitored anesthesia care on participant's satisfaction with anesthesia, as well as side effects caused by the anesthetics.

Inclusion Criteria:

• Patients receiving ear surgery with ASA physical status 1 or 2

Exclusion Criteria:

• Age under 19 years
• Pregnancy
• Cognitive disorder affecting daily activity
• Patients who cannot participate in the survey
• Allergy to the medication
• History of sedative abuse