Brain Tumor Surgery and Postoperative Delirium

During the surgery, target-controlled infusion (TCI) pumps were used, employing the Dyck model for continuous infusion of propofol, with the target plasma concentration maintained at 0.2 ng/ml. Postoperatively, propofol was infused at a rate of 0.2-0.4 mcg/kg/hr according to the intensive care unit's protocol, until the patient had the endotracheal tube removed.

During the surgery, equal volumes of saline were injected. After the surgery, the patient was transferred to the intensive care unit, where propofol was continuously infused at a rate of 0.2-0.4 mcg/kg/hr according to the ICU protocol, until the endotracheal tube was removed.