NCT02698982.

Trial name or title	Impact of tight Intraoperative blood pressure and depth of anesthesia control on the incidence of postoperative cognitive impairment in elderly patients
Methods	A randomized controlled trial
Participants	41 participants aged 70 years or older undergoing elective moderate risk surgery requiring a general anaesthesia
Interventions	Device: depth of anaesthesia monitoring (BIS, Covidien USA) and continuous non‐invasive blood pressure monitoring (Clearsight, Edwards LifeScience, USA) Procedure
Outcomes	Postoperative delirium detected by the Confusion Assessment Method (CAM) (time frame: 3 day postoperative) Postoperative change in cognitive function detected by a battery of neuropsychological test; (time frame: baseline and 1 week and 3 month postoperative).
Starting date	May 2016
Contact information	Luc Van Obbergh and Céline Boudart, Erasme University Hospital, Brussels, Belgium, 1070
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