Optical gas analysis in medicine
Abstract
Infrared optical gas analysis methods for analysis and monitoring of gases for narcosis and artificial respiration are described. The advantages of IR absorption measurements for gas concentration determination are demonstrated. The medical quality, requirements for measuring equipment for continuous breathing gas analysis are fulfilled by IR systems. Desirable improvements mainly concern weight and volume of the measuring head, and the simultaneous determination of all relevant gases with a single measuring head. This requires an extension of the practically usable spectral range into the middle IR, where the volatile anesthetics show substantially stronger absorption bands. This extension is only successful if for the longer wavelength spectral range efficient emitters and stable, fast detectors can be used, whose power characteristics approach these of presently available component in the range between 3 and 4.5 micrometers.
- Publication:
-
Verein Deutscher Ingenieure Measuring Methods using Optoelectronic Semiconductor Components
- Pub Date:
- 1985
- Bibcode:
- 1985vdim.rept..197P
- Keywords:
-
- Clinical Medicine;
- Gas Analysis;
- Gas Mixtures;
- Infrared Absorption;
- Anesthesiology;
- Cardiology;
- Human Pathology;
- Infrared Detectors;
- Respiration;
- Instrumentation and Photography