Depth of Anesthesia and Postoperative Delirium

Despite advances in medical therapies, the demand for surgery is consistently increasing.1 Each year, more than 300 million surgical procedures are performed worldwide, involving an increasingly elderly patient population.2,3 Postoperative delirium is a common and important complication for older patients and may relate to the dose of anesthesia drugs used during surgery.4 Consequently, there is considerable interest in strategies to safely reduce the dose of anesthetic drugs while maintaining adequate anesthesia for older patients