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Proceedings Paper

Continuous arterial blood gas monitoring with transmitted light sensors and light-emitting diode light sources
Author(s): Les A. Schlain; Steven M. Spar
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Paper Abstract

Continuous intra-arterial blood gas monitoring is a potentially valuable tool in the surgical and intensive care arenas. A continuous blood gas monitoring system utilizing transmitted light sensors and LED light sources is presented. Transmitted light sensors incorporate a tight 180 degree bend at the tip of the optical fiber and provide a true transmission measurement of the signal through the chemical indicator systems. This configuration may be used with either absorbance or fluorescent based chemical indicator systems. The unique sensor design results in significant optical, mechanical, manufacturing, and clinical advantages. Utilization of all LED light sources is desirable to reduce the cost, size, and complexity of the electro-optical instrumentation. Low cost compact instrumentation will facilitate interfacing blood gas monitors to existing modular point of care monitoring equipment. In vitro results from a prototype system that utilizes all LED light sources are presented. In addition, clinical results and anecdotes from recent clinical trials utilizing low power halogen sources are shown. Long term stability, accuracy, and clinical utility are discussed.

Paper Details

Date Published: 28 July 1994
PDF: 7 pages
Proc. SPIE 2131, Biomedical Fiber Optic Instrumentation, (28 July 1994); doi: 10.1117/12.180742
Show Author Affiliations
Les A. Schlain, Optex Biomedical Inc. (United States)
Steven M. Spar, Optex Biomedical Inc. (United States)

Published in SPIE Proceedings Vol. 2131:
Biomedical Fiber Optic Instrumentation
James A. Harrington; David M. Harris; Abraham Katzir; Fred P. Milanovich, Editor(s)

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