Changes in cerebral oxygenation and cognitive functions during controlled hypotension
Purpose: This study aimed to evaluate the effect of controlled hypotension on cerebral oxygen saturation and postoperative cognitive dysfunction (POCD) in patients undergoing nasal surgery.Materials and Methods: Forty patients were randomized by a sealed envelope method into two drug groups: esmolol (Group E, n=20) or nitroglycerin (Group N, n=20)