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.
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