Abstract
Method :- Near Infra-Red Absorption Spectroscopy (NIRAS, Hamamatsu NIRO 500) was performed on the heads of four children undergoing cardiac catheterisation. An increase in cerebral blood volume was achieved by unilateral jugular venous occlusion for about 5 seconds. Cerebral venous oxygen saturation (CSvO2) by NIRAS was calculated and compared with direct measurement by co-oximetry of blood from the internal jugular vein.
Results :- The median (range) age of the children was 1.6 (0.7 - 14.1) years. The median (range) CSvO2 by cooximeter was 55.2% (52.7 - 61) and by NIRAS was 53.6% (51.6 - 57.5). Using a Bland Altman plot the mean difference (range) was 1.92% (-2.9 to 5.9).
Conclusions :- NIRAS used in this way seems to provide an accurate non invasive measurement of cerebral venous saturation.
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Yoxall, C., Weindling, A. & Dawani, N. 255 MEASUREMENT OF CEREBRAL VENOUS SATURATION BY NEAR INFRARED ABSORPTION SPECTROSCOPY. Pediatr Res 36, 45 (1994). https://doi.org/10.1203/00006450-199407000-00255
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DOI: https://doi.org/10.1203/00006450-199407000-00255
