The Effect of Two Different Modes of Anaesthesia Mainantance on Postoperative Delirium

Exclusion Criteria

• •Patients' age\< 60 years,
• •Patients undergoing emergency cholecystectomy or did not have preoperative Mini-Cog assessment,
• •With a history of cerebrovaskuler insult that was thought to have an effect on postoperative delirium ,
• •Patients with difficulty in cooperation ,
• •Patients with hemodynamic instability(arterial blood pressure above 160/90 mmHg and below 90/60 mmHg and patients with pulse rate below 50/min and above 100/min) ,
• •Patients with previously diagnosed dementia, and those who had surgical procedures lasting more than 2 hours were excluded from the study.