Perioperative Salivary Alpha-amylase as a Predictor of Delirium After Lower Extremity Vascular Bypass Surgery

"Saliva samples will be obtained using a saliva collection system and salivary Alpha-amylase (SAA) level will be measured preoperatively, immediately postoperative, at the end of the 1st, 2nd, and 3rd postoperative days. For sampling, the swab will be placed into the patient's mouth for 2-5min by a specially trained nurse.~A minimum of 0.2mL of saliva will be needed as per the manufacturer's recommendations to saturate the swab."