Clinical Research Directory

* Inclusion Criteria: * 1-ASA2-3 patients between the ages of 18-80 who will undergo elective coronary bypass surgery under general anesthesia * Exclusion Criteria: * 1\. Be younger than 18 years old, be over 80 years old * 2\. Patients with an ASA score greater than 3 * 3\. EF\<40% * 4\. Those with contraindications to anesthetic drugs * 5\. Patients with BMI\>30 * 6\. Patients who did not want to participate in the study * 7\. Right ventricular dysfunction * 8\. COPD(Chronic obstructive pulmonary disease) * 9\. Bullous lung disease * 10\. Moderate to severe PHT * 11\. Severe kidney or liver disease * 12\. Patients with hemodynamic instability in the perioperative period * 13\. Pregnancy