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Clinical monitoring of shock mainly depends on blood-oxygenindices obtained from invasive blood sample tests. The central internal jugular central vein oxygenation level (ScvO 2 ) has been considered as a gold standard indicator for shock prediction. We developed a noninvasive spatially-resolved near-infrared spectroscopy (SR-NIRS) to measure tissue blood oxygen saturation (StO 2 ) surrounding the region of taking blood sample for the ScvO 2 test in 25 patients with shock. StO 2 values were found to be highly correlated (r = 0.84, p < 0.001) with ScvO 2 levels and the concordance coefficient of 0.80 is high. The results suggest the potential of noninvasive SR-NIRS for bedside shock monitoring.

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