The Effects of Nicardipine and Esmolol Applied for Controlled Hypotension

"The procedure to be applied to the cases to be included in the study:~Patients randomized by the sealed envelope method will be divided into 2 groups (40 patients in each group).~The sealed envelopes that determine which group the patient will belong to will be randomly selected by the patient.~Standard general anesthesia will be applied to all patients. Before starting the surgical procedure; Group N (Nicardipine infusion) will be administered at a dose of 5-15mg/h, and Group E (Esmolol infusion) at a dose of 50-300mcg/kg/min.~2\) General anesthesia will be applied to all groups. Patients will be administered controlled hypotension (mean arterial pressure 50-60 mmHg)."