A method and device are described which are particularly useful for continuous on-line monitoring of hematocrit and other blood parameters. The effect of change in blood electrolyte composition, for example, in blood sodium concentration, is taken into consideration. This effect has been found to change...http://www.google.co.uk/patents/US5331958?utm_source=gb-gplus-sharePatent US5331958 - Spectrophotometric blood analysis
