Overview
The purpose of this study is to analyze the changes in cerebral oxygen saturation during the use of three vasopressors, phenylephrine, norepinephrine, and vasopressin, which are currently used during coronary artery bypass grafting.
Eligibility
Inclusion Criteria:
- Patients undergoing off pump coronary artery bypass.
Exclusion Criteria:
- Patient refusal
- Preoperative vasopressor use
- Preoperative mechanical circulatory support
- Concurrent cerebrovascular or head and neck surgery
- Technical difficulty of measuring brain oxygen saturation
- Redo coronary artery bypass surgery