Results
The postoperative Mini-mental state examination scores of patients (26.23±2.77) were significantly lower than the preoperative scores (27.17±1.93) only in the general anesthesia group (p =0.003), while the postoperative Montreal cognitive assessment scores (22.87±3.88 for general and 23.13±4.08 for spinal anesthesia) were lower than the preoperative scores (24.32±3.19 for general and 24.35±2.84 for spinal anesthesia) in both the general and spinal anesthesia groups (p =0.000 and 0.019, respectively).
The Postoperative cognitive dysfunction incidence was 32.9% using the Montreal cognitive assessment and was not significantly different between anesthesia methods.