Extracranial contamination has a significant effect on near-infrared spectroscopy measurements of cerebral oxygen saturation, according to a study published in the April issue of Anesthesiology.
Researchers aimed to determine if NIRS-derived regional cerebral oxygen saturation measurements accurately account for oxygen saturation contamination from extracranial tissue. In the past, interdevice technologic differences have suggested a potential variation in the ability to accurately acquire brain oxygenation signals.
The study concluded that there were, in fact, inaccuracies suggesting that the oxygen saturation measurements provided by cerebral oximetry do not solely reflect that of the brain alone.
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Researchers aimed to determine if NIRS-derived regional cerebral oxygen saturation measurements accurately account for oxygen saturation contamination from extracranial tissue. In the past, interdevice technologic differences have suggested a potential variation in the ability to accurately acquire brain oxygenation signals.
The study concluded that there were, in fact, inaccuracies suggesting that the oxygen saturation measurements provided by cerebral oximetry do not solely reflect that of the brain alone.
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