Transcranial cerebral oximetry in the hyperbaric environment.
Continuous monitoring of dynamic changes of transcranial regional cerebral oxygenation (rSO2) was performed in 7 healthy volunteers (mean age 40.9 +/- 12.6 years; range 25-62 years) during normo- and hyperbaric oxygenation (HBO at 2.5 and at 1.95 ATA) using an INVOS 3100 cerebral oximeter. A significant change between HBO and control phase could be found in rSO2, alterations (p < 0.05; ANOVA, Tukey test). The results suggest that the calculation of rSO2 may be a useful method to monitor changes of oxygen saturation under hyperbaric conditions. However, the absolute quantification of rSO2 is useless at the moment and needs further investigation.
Litscher
G
G
Department of Anesthesiology and Intensive Care Medicine, University of Graz, Austria.
Schwarz
G
G
Ratzenhofer-Komenda
B
B
Kovac
H
H
Gabor
S
S
Smolle-Jüttner
F M
FM
D000328:Adult; D001921:Brain / Q000098:blood supply*; D005260:Female; D006801:Humans; D006931:Hyperbaric Oxygenation / Q000295:instrumentation*; D008297:Male; D008875:Middle Aged; D008991:Monitoring, Physiologic / Q000295:instrumentation*; D010092:Oximetry / Q000295:instrumentation*; D010101:Oxygen Consumption / Q000502:physiology; D019265:Spectroscopy, Near-Infrared / Q000295:instrumentation