Effect of Dexmedetomidine on Postoperative Cognitive Function in Patients Undergoing Shoulder Arthroscopy With Beach Chair Position Under Desflurane Anesthesia

Investigate the effects of dexmedetomidine on postoperative cognitive function in patients undergoing shoulder arthroscopy with beach chair position under desflurane anesthesia.

Inclusion Criteria:

1. Patients undergoing shoulder arthroscopic surgery with beach chair position

Exclusion Criteria:

1. Patients with respiratory disease
2. Patients with cardiac disease
3. Patients with cerebrovascular disease
4. patients with uncontrolled hypertension
5. Patients with dementia
6. Patients with psychiatric disease