Results
delirium
Seventy patients were eligible for this study. The authors excluded ten patients because four refused to participate and six did not meet the inclusion criteria (two due to preoperative delirium, and four were at high risk of postoperative care in the ICU). Finally, 60 patients were enrolled in this study based on intention to treat and randomly assigned to one of three equal groups (Fig. 
CONSORT flow diagram of study participants
Baseline patient characteristics and surgical dataASA, American Society of Anesthesiologists, BMI; Body Mass Index