Monitoring blood loss with near infrared spectroscopy.


Experimental research has shown correlation between near infrared spectroscopy (NIRS) and blood loss, but these findings have not been validated in man. Ten blood donors were monitored before, during and for 10 min after blood collection (470 ml) with NIRS. A Somanetics INVOS 4100 oximeter monitored regional haemoglobin saturation in the cerebral cortex… (More)


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