Spectral Estimation of Nasal Cyclic Rhythm by Nasal Airflow Temperature Measurement

Abstract:

^{. The nasal cycle is referred to a cyclic fluctuation in congestion of the nasal mucosa that results in rhythmic and bilateral reciprocal alteration of nasal airway patency. The purpose of this study is to deal with statistical and power spectral analysis of nasal cycle by measuring the temperature difference between the airflow of both left and right nostrils. Five adult voluntary healthy subjects are enrolled for the study. Nasal temperature probe combined with amplifier are used for recording nasal airflow temperature on both nostrils. The highest nasal airflow temperature values are detected at the end of expiration and the lowest values are detected at the end of inspiration. Nasal cycle found in all the subjects and lasted to the minimum of 30 minutes to maximum of 6 hours. The difference in temperature of both nostrils is statistically significant (p<0.05) and spectral estimation is made using autoregressive modeling. The method is used to quantify nasal obstruction in pathological condition and also to correlate the related physiological phenomenon.}

• Periodical: Applied Mechanics and Materials (Volume 573)
• Pages: 848-855
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.573.848
• Online since: June 2014
• Authors: R. Sukanesh, E. Muthu Kumaran*
• Keywords: Autoregressive Model, Nasal Airflow Temperature, Nasal Cycle, Spectral Estimation

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