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

 Soh, Sarah  ;  Shim, Jae-Kwang  ;  Song, Jong-Wook  ;  Kim, Keung-Nyun  ;  Noh, Hyun-Young  ;  Kwak, Young-Lan 
 Journal of Neurosurgical Anesthesiology, Vol.29(4) : 426-432, 2017 
Journal Title
 Journal of Neurosurgical Anesthesiology 
Issue Date
Aged ; Blood Gas Analysis ; Brain Chemistry ; Delirium/etiology* ; Delirium/metabolism ; Delirium/psychology* ; Female ; Humans ; Male ; Neurosurgical Procedures/adverse effects ; Oximetry/methods* ; Pain, Postoperative/drug therapy ; Pain, Postoperative/epidemiology ; Postoperative Complications/metabolism* ; Postoperative Complications/psychology* ; Postoperative Nausea and Vomiting/drug therapy ; Postoperative Nausea and Vomiting/psychology ; Prospective Studies ; Spine/surgery*
BACKGROUND: 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<80% of the baseline values. The serially assessed hemodynamic variables, hematocrit levels, and blood gas analysis variables were also similar between the groups, except for the number of hypotensive events per patient, which was higher in the patients with delirium than in those without (4, interquartile range [IQR] 3 to 6 vs. 2, IQR: 1to 3; P=0.014). CONCLUSIONS: The degree and duration of decrease of the perioperative rSO2 measurements were not associated with delirium in elderly patients after spinal surgery.
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1. College of Medicine (의과대학) > Dept. of Anesthesiology and Pain Medicine (마취통증의학교실) > 1. Journal Papers
1. College of Medicine (의과대학) > Dept. of Neurosurgery (신경외과학교실) > 1. Journal Papers
Yonsei Authors
곽영란(Kwak, Young Lan) ORCID logo https://orcid.org/0000-0002-2984-9927
김긍년(Kim, Keung Nyun)
노현영(Noh Hyun-young)
소사라(Soh, Sa Rah) ORCID logo https://orcid.org/0000-0001-5022-4617
송종욱(Song, Jong Wook) ORCID logo https://orcid.org/0000-0001-7518-2070
심재광(Shim, Jae Kwang) ORCID logo https://orcid.org/0000-0001-9093-9692
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