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Please use this identifier to cite or link to this item: http://hdl.handle.net/11055/271
Title: A pilot study using preoperative cerebral tissue oxygen saturation to stratify cardiovascular risk in major non-cardiac surgery.
Authors: Wen, Syb
Peng, Azy
Boyle, S
Cai, S
Pope, L
Tran, MT
Short, TG
Aneman, A
Jaeger, M
Chuan, A
ANZCA/FPM Author: Tran, MT
Short, TG
Issue Date: 2017
Citation: Anaesthesia and intensive care 2017; 45(2): 202-209
Abstract: This prospective pilot study evaluated whether low preoperative cerebral tissue oxygen saturation is associated with unfavourable outcomes after major elective non-cardiac surgery. Eighty-one patients over 60 years of age, American Society of Anesthesiologists physical status 3 or 4, were recruited. Resting cerebral tissue oxygen saturation was recorded on room air, and after oxygen supplementation, using cerebral oximetry. The primary outcome was 30-day major adverse event of combined mortality or severe morbidity, and the secondary outcome was 30-day new disability. Eleven patients (13.6%) suffered a major adverse event, and 28 patients (34.6%) experienced new disability. Room air cerebral tissue oxygen saturation was significantly different between patients who had a major adverse event, 67% (95% confidence interval [CI] 65-70) versus unaffected, 71% (95% CI 70-72;P=0.04). No statistical difference was found between patients for new disability (range 70%-74%;P=0.73). Room air cerebral tissue oxygen saturation was significantly associated with major adverse events (odds ratio 1.36 (95% CI 1.03-1.79),P=0.03). Saturation levels ≤68% carried a positive likelihood ratio of 2.2 for death or severe morbidity,P=0.04. A definitive trial is required to confirm if cerebral oximetry can be used to stratify the cardiovascular risk of patients presenting for non-cardiac surgery.
URI: http://hdl.handle.net/11055/271
PubMed URL: https://www.ncbi.nlm.nih.gov/pubmed/28267942
ISSN: 0310-057X
Journal Title: Anaesthesia and intensive care
Type: Journal Article
Appears in Collections:Scholarly and Clinical

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