Polyvinylidene fluoride film based nasal sensor to monitor human respiration pattern: An initial clinical study

Manjunatha, Roopa G and Rajanna, K and Mahapatra, Roy D and Nayak, MM and Krishnaswamy, Uma Maheswari and Srinivasa, R (2013) Polyvinylidene fluoride film based nasal sensor to monitor human respiration pattern: An initial clinical study. In: JOURNAL OF CLINICAL MONITORING AND COMPUTING, 27 (6). pp. 647-657.

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Abstract

Design and development of a piezoelectric polyvinylidene fluoride (PVDF) thin film based nasal sensor to monitor human respiration pattern (RP) from each nostril simultaneously is presented in this paper. Thin film based PVDF nasal sensor is designed in a cantilever beam configuration. Two cantilevers are mounted on a spectacle frame in such a way that the air flow from each nostril impinges on this sensor causing bending of the cantilever beams. Voltage signal produced due to air flow induced dynamic piezoelectric effect produce a respective RP. A group of 23 healthy awake human subjects are studied. The RP in terms of respiratory rate (RR) and Respiratory air-flow changes/alterations obtained from the developed PVDF nasal sensor are compared with RP obtained from respiratory inductance plethysmograph (RIP) device. The mean RR of the developed nasal sensor (19.65 +/- A 4.1) and the RIP (19.57 +/- A 4.1) are found to be almost same (difference not significant, p > 0.05) with the correlation coefficient 0.96, p < 0.0001. It was observed that any change/alterations in the pattern of RIP is followed by same amount of change/alterations in the pattern of PVDF nasal sensor with k = 0.815 indicating strong agreement between the PVDF nasal sensor and RIP respiratory air-flow pattern. The developed sensor is simple in design, non-invasive, patient friendly and hence shows promising routine clinical usage. The preliminary result shows that this new method can have various applications in respiratory monitoring and diagnosis.

Item Type:	Journal Article
Publication:	JOURNAL OF CLINICAL MONITORING AND COMPUTING
Publisher:	SPRINGER HEIDELBERG
Additional Information:	copyright for this article belongs to SPRINGER HEIDELBERG GERMANY
Keywords:	PVDF thin film; Nasal sensor; Cantilever; Human respiration pattern; Respiratory inductance plethysmograph
Department/Centre:	Division of Mechanical Sciences > Aerospace Engineering(Formerly Aeronautical Engineering) Division of Interdisciplinary Sciences > Centre for Nano Science and Engineering Division of Physical & Mathematical Sciences > Instrumentation Appiled Physics
Date Deposited:	06 Dec 2013 07:56
Last Modified:	06 Dec 2013 07:56
URI:	http://eprints.iisc.ac.in/id/eprint/47883

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