Method for oximeter standardization and for reporting results

G - Physics – 01 – N

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G01N 37/00 (2006.01) G01N 21/27 (2006.01) G01N 33/96 (2006.01)

Patent

CA 2216657

The present invention comprises methods of determining the performance of an absorbance spectrometer, and, in particular, of CO-oximeters. The methods comprise measuring the absorbance spectrum of a quality control sample and comparing it to a standard spectrum of that quality control. Instrumental error will be the primary factor contributing to the observed difference. The present method also provides techniques for converting the instrumental error manifested in the difference between the measured and standard quality control spectra into blood concentration values comparable to that of real blood. Analysis of test samples on a spectrophotometer; and calibration of the spectrophotometer is also provided.

L'invention concerne des méthodes permettant d'évaluer le fonctionnement d'un spectromètre d'absorption, et en particulier, d'un oxymètre à CO. Ces méthodes consistent à mesurer le spectre d'absorption d'un échantillon de contrôle de qualité et à le comparer au spectre standard de cet échantillon de contrôle de qualité. L'erreur instrumentale sera la cause essentielle de la différence observée. L'invention porte également sur des techniques de conversion de l'erreur instrumentale se manifestant dans la différence entre le spectre mesuré et le spectre de référence de l'échantillon de contrôle de qualité en valeurs de concentration sanguine comparables aux valeurs présentes dans le sang réel. Elle concerne également l'analyse des échantillons d'essai par un spectrophotomètre et l'étalonnage du spectrophotomètre.

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