, Volume 33, Issue 2, pp 228-230

Cerebral and muscle oxygen saturation measurement by frequency-domain near-infra-red spectrometer

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Tissue oxygen saturation quantification was obtained using a frequency-domain multi-source method based on two wavelength light-emitting diodes. Brain saturation was 60·3±1·1% (n=12). Brachioradial muscle saturation declined during forearm ischaemia and maximal voluntary contraction from 73·7±1·8 and 74·7±1·8% at rest to 44·2±3·3 and 61·4±2·9%, respectively.