Assessment of breathing effort by means of a fiber optic sensor

Meir Nitzan; Anatoly Babchenko; Sergei Turivnenko; Boris Khanokh

doi:10.1117/12.271011

18 April 1997 Assessment of breathing effort by means of a fiber optic sensor

Meir Nitzan, Anatoly Babchenko, Sergei Turivnenko, Boris Khanokh

Proceedings Volume 2977, Specialty Fiber Optics for Biomedical and Industrial Applications; (1997) https://doi.org/10.1117/12.271011
Event: BiOS '97, Part of Photonics West, 1997, San Jose, CA, United States

Abstract

A sensor for measuring chest circumference by means of an optical fiber has been developed. The method is based on the measurement of light transmitted through a bent optical fiber, which is connected to an elastic band, wrapped around the chest, and whose radius of curvature changes due to the respiratory act. The amount of transmitted light is related to the radius of curvature of the fiber which depends on the chest circumference. The output of the respiratory sensor was checked qualitatively by changing the respiration depth. The changes in breathing effort were clearly demonstrated in the sensor output recording. The respiratory effort was also correlated with the heart rate, measured by photoplethysmography. Statistically significant correlation was found between the lungs' volume and the heart rate, but the correlation coefficient was not high. The magnitude of the breathing depth and the height of the corresponding respiratory changes of the heart cycle period were not correlated.

Citation Download Citation

Meir Nitzan, Anatoly Babchenko, Sergei Turivnenko, and Boris Khanokh "Assessment of breathing effort by means of a fiber optic sensor", Proc. SPIE 2977, Specialty Fiber Optics for Biomedical and Industrial Applications, (18 April 1997); https://doi.org/10.1117/12.271011

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