Comparison of Volatile Anesthetics on Cerebral Oxygenation During Controlled Hypotension

Comparison of Effects of Sevoflurane and Desflurane on Cerebral Oxygenation During Controlled Hypotension

Controlled hypotension is a preferred method for reducing surgical bleeding during septoplasty operations however, the level of hypotension and bradycardia should not disrupt cerebral oxygenation. On this account, the investigators aim to investigate the effects of different volatile anesthetics combined with a short-acting opioid on cerebral oxygenation during controlled hypotension using near infrared spectroscopy.

Inclusion Criteria:

• Patients in American Society of Anesthesiology (ASA) classification I and II
• Patients undergoing elective septoplasty operation

Exclusion Criteria:

• Patients in ASA classification III and higher
• Emergency surgery
• Patients in New York Heart Association classification III-IV
• Patients with known allergy to drugs used in the study