Detection of inspiratory-induced vasoconstrictive episodes using laser Doppler fluxmetry and photopletysmography

Rauh R, Posfay A, Mück-Weymann M (2003)

Publication Language: English

Publication Type: Conference contribution, Original article

Publication year: 2003

Journal

Proceedings of SPIE Society of Photo-optical Instrumentation Engineers (SPIE)

Pages Range: 242-247

Conference Proceedings Title: Proceedings Volume 5068, Saratov Fall Meeting 2002: Optical Technologies in Biophysics and Medicine IV;

Event location: Saratov RU

DOI: 10.1117/12.518778

Abstract

Laser Doppler fluxmetry (LDF) or photopletysmography (PPG) are frequently used as non-invasive tools for the detection of the so-called “inspiratory gasp response” (IGR), a vasoconstrictive episode provoked by a voluntary deep inspiration. According to our knowledge, a rigorous comparison of both methods has not been reported in the literature. Therefore, the aim of the study was to compare the detection of IGR with LDF and PPG. We investigated 14 young and healthy volunteers. A PPG and a LDF probe were applied to adjacent fingertips of the dominant hand (thumb/index finger). After baseline measurements the subjects were asked to perform a deep inspiration with time intervals of 90 sec., 60 sec., 30 sec., and 15 sec. We found that both methods are useful to detect individual IGR. However, overall correlation of IGR amplitude detected with LDF and PPG was poor (r=0.433). Surprisingly, there was a continuous increase of the correlation coefficient from the first (r=0.105) or second (r=0.184) IGR to the fifth (r=0.727) IGR. These results imply that experimental data obtained with PPG and LDF are not equivalent and therefore one has to be cautious regarding the comparison and interpretation of results obtained with these two different

Authors with CRIS profile

Robert Rauh Lehrstuhl für Physiologie (Vegetative Physiologie)

Involved external institutions

Technische Universität Dresden DE Germany (DE)

How to cite

APA:

Rauh, R., Posfay, A., & Mück-Weymann, M. (2003). Detection of inspiratory-induced vasoconstrictive episodes using laser Doppler fluxmetry and photopletysmography. In Valery V. Tuchin (Eds.), Proceedings Volume 5068, Saratov Fall Meeting 2002: Optical Technologies in Biophysics and Medicine IV; (pp. 242-247). Saratov, RU.

MLA:

Rauh, Robert, Alexander Posfay, and Michael Mück-Weymann. "Detection of inspiratory-induced vasoconstrictive episodes using laser Doppler fluxmetry and photopletysmography." Proceedings of the Saratov Fall Meeting 2002: Optical Technologies in Biophysics and Medicine IV, Saratov Ed. Valery V. Tuchin, 2003. 242-247.

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