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Τετάρτη 6 Σεπτεμβρίου 2017

Postoperative Delirium in Elderly Patients Undergoing Major Spinal Surgery: Role of Cerebral Oximetry

imageBackground: Perioperative cerebral hypoperfusion/ischemia is a major inciting factor of postoperative delirium, which is coupled with adverse outcome in elderly patients. Cerebral oximetry enables noninvasive assessment of the regional cerebral oxygen saturation (rSO2). This study aimed to investigate whether perioperative rSO2 variations were linked to delirium in elderly patients after spinal surgery. Materials and Methods: Postoperative delirium was assessed for 48 hours postsurgery in 109 patients aged over 60 years without a prior history of cerebrovascular or psychiatric diseases by the Confusion Assessment Method for the intensive care unit and the intensive care delirium screening checklist. The rSO2 values immediately before and throughout surgery were acquired. The preoperative cognitive functions, patient characteristics, and perioperative data were recorded. Results: During the 48-h postoperative period, 9 patients (8%) exhibited delirium. The patients with delirium showed similar perioperative rSO2 values as those without, in terms of the median lowest rSO2 values (55% vs. 56%; P=0.876) and incidence (22%, both) and duration of decline of rSO2

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