Title :
Mathematical model of transmission pulse oximetry
Author :
Marble, David R. ; Cheung, Peter W.
Author_Institution :
Washington Univ., Seattle, WA, USA
Abstract :
A mathematical model of optical propagation in tissue based on the one-dimensional photon diffusion theory is used to analyze the response of transmission pulse oximeters. The model predicts that errors of over 5% oxygen saturation can occur if there are changes in the emission spectra of the LEDs, the fraction of blood in tissue, the hematocrit or the arterial venous saturation difference. However, the model predicts that the instruments should be insensitive to changes in the red blood cell size, the tissue absorption and scattering cross sections, and infusion of saline.<>
Keywords :
biomedical measurement; physiological models; 1D photon diffusion theory; LED emission spectra; O/sub 2/ saturation; arterial venous saturation difference; hematocrit; mathematical model; optical propagation in tissue; red blood cell size; saline infusion; scattering cross section; tissue absorption; tissue blood fraction; transmission pulse oximetry;
Conference_Titel :
Engineering in Medicine and Biology Society, 1988. Proceedings of the Annual International Conference of the IEEE
Conference_Location :
New Orleans, LA, USA
Print_ISBN :
0-7803-0785-2
DOI :
10.1109/IEMBS.1988.94651
