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Near-infrared spectroscopy assessed cerebral oxygenation during open abdominal aortic aneurysm repair: relation to end-tidal CO2 tension

Authors :
Henrik Toft Sørensen
Henning B. Nielsen
N. H. Secher
Source :
Journal of Clinical Monitoring and Computing. 30:409-415
Publication Year :
2015
Publisher :
Springer Science and Business Media LLC, 2015.

Abstract

During open abdominal aortic aneurism (AAA) repair cerebral blood flow is challenged. Clamping of the aorta may lead to unintended hyperventilation as metabolism is reduced by perfusion of a smaller part of the body and reperfusion of the aorta releases vasodilatory substances including CO2. We intend to adjust ventilation according end-tidal CO2 tension (EtCO2) and here evaluated to what extent that strategy maintains frontal lobe oxygenation (ScO2) as determined by near infrared spectroscopy. For 44 patients [5 women, aged 70 (48-83) years] ScO2, mean arterial pressure (MAP), EtCO2, and ventilation were obtained retrospectively from the anesthetic charts. By clamping the aorta, ScO2 and EtCO2 were kept stable by reducing ventilation (median, -0.8 l min(-1); interquartile range, -1.1 to -0.4; P

Details

ISSN :
15732614 and 13871307
Volume :
30
Database :
OpenAIRE
Journal :
Journal of Clinical Monitoring and Computing
Accession number :
edsair.doi.dedup.....c5548b43e79b00d65757c2d7cdc8006f
Full Text :
https://doi.org/10.1007/s10877-015-9732-5