Application of the Kubelka Munk equation to characterizing a reflectance pulse oximeter

Author

Davies, C. ; Takatani, S. ; Sakakibara, N. ; Nose, Y.

Author_Institution

Cleveland Clinic Found., OH, USA

fYear

1989

fDate

9-12 Nov 1989

Firstpage

1095

Abstract

A one-dimensional optical reflectance model based on the equations of P. Kubelka and F. Munk (1931) has been developed to characterize a reflectance pulse oximeter. Arterial blood volume was varied in order to simulate pulsatile changes in reflectance. It was found that the reflectance ratio versus SaO₂ (arterial oxygen saturation) varied significantly with SvO₂ (venous oxygen saturation). This effect was simulated by changes in the cardiac output. In addition, effects of changing hematocrit and venous blood volume were examined. Neither of these parameters had a significant effect on the reflectance ratio versus SaO₂ plot for the oxygen saturation range most often seen clinically (SaO₂>80%)

Keywords

biomedical equipment; biosensors; blood; cardiology; oxygen; reflectivity; Kubelka Munk equation; O₂; arterial blood volume; arterial oxygen saturation; cardiac output; hematocrit; one-dimensional optical reflectance model; oxygen saturation range; pulsatile reflectance changes; reflectance pulse oximeter; reflectance ratio; venous blood volume; venous oxygen saturation; Artificial biological organs; Blood; Equations; Fingers; Fluctuations; Nose; Optical pulses; Optical reflection; Optical saturation; Reflectivity;

fLanguage

English

Publisher

ieee

Conference_Titel

Engineering in Medicine and Biology Society, 1989. Images of the Twenty-First Century., Proceedings of the Annual International Conference of the IEEE Engineering in

Conference_Location

Seattle, WA

Type

conf

DOI

10.1109/IEMBS.1989.96103

Filename

96103