Remimazolam Consumption: TCI vs. Manual Infusion

The purpose of this prospective randomized controlled trial is to compare the total consumption of remimazolam between two different administration methods-Target-Controlled Infusion (TCI) and manual infusion-in patients undergoing cerebrovascular bypass surgery.

Inclusion Criteria: * Patients scheduled to undergo cerebrovascular bypass surgery under general anesthesia. * American Society of Anesthesiologists (ASA) Physical Status 1, 2, or 3 * Adults aged 19 years or older * Patients who have provided prior written informed consent to participate in the study Exclusion Criteria: * Patients who do not consent to participate in the research * Patients classified as ASA Physical Status 4 * Patients with a BMI ≤18.5 kg/m2 or 35.0 ≥ kg/m2 * History of allergy to benzodiazepine-class medications * Patients with acute narrow-angle glaucoma * Patients in a state of shock or coma * Acute alcohol intoxication with suppressed vital signs , or patients with alcohol or drug dependency * Presence of Sleep Apnea Syndrome or severe/acute respiratory failure * Patients with lactose intolerance or hypersensitivity to Dextran 40