Continuous arterial blood gas monitoring with transmitted light sensors and light emitting diode light sources

Les A. Schlain; Steven M. Spar

doi:10.1117/12.180742

28 July 1994 Continuous arterial blood gas monitoring with transmitted light sensors and light-emitting diode light sources

Les A. Schlain, Steven M. Spar

Author Affiliations +

Proceedings Volume 2131, Biomedical Fiber Optic Instrumentation; (1994) https://doi.org/10.1117/12.180742
Event: OE/LASE '94, 1994, Los Angeles, CA, United States

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.

Citation Download Citation

Les A. Schlain and Steven M. Spar "Continuous arterial blood gas monitoring with transmitted light sensors and light-emitting diode light sources", Proc. SPIE 2131, Biomedical Fiber Optic Instrumentation, (28 July 1994); https://doi.org/10.1117/12.180742

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