Research Papers: Sensing

Pulse transit time differential measurement by fiber Bragg grating pulse recorder

[+] Author Affiliations
Sharath Umesh, Shikha Ambastha

Indian Institute of Science, Department of Instrumentation and Applied Physics, Bangalore, India

Srivani Padma

Indian Institute of Science, Department of Instrumentation and Applied Physics, Bangalore, India

Indian Institute of Science, Department of Electrical Communication Engineering, Bangalore, India

Anand Kalegowda

M.S. Ramaiah Medical College, Department of Radio Diagnosis, Bangalore, India

Sundarrajan Asokan

Indian Institute of Science, Department of Instrumentation and Applied Physics, Bangalore, India

Indian Institute of Science, Robert Bosch Center for Cyber Physical Systems and Applied Photonics Initiative, Bangalore, India

J. Biomed. Opt. 20(5), 057005 (May 28, 2015). doi:10.1117/1.JBO.20.5.057005
History: Received February 4, 2015; Accepted April 30, 2015
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Abstract.  The present study reports a noninvasive technique for the measurement of the pulse transit time differential (PTTD) from the pulse pressure waveforms obtained at the carotid artery and radial artery using fiber Bragg grating pulse recorders (FBGPR). PTTD is defined as the time difference between the arrivals of a pulse pressure waveform at the carotid and radial arterial sites. The PTTD is investigated as an indicator of variation in the systolic blood pressure. The results are validated against blood pressure variation obtained from a Mindray Patient Monitor. Furthermore, the pulse wave velocity computed from the obtained PTTD is compared with the pulse wave velocity obtained from the color Doppler ultrasound system and is found to be in good agreement. The major advantage of the PTTD measurement via FBGPRs is that the data acquisition system employed can simultaneously acquire pulse pressure waveforms from both FBGPRs placed at carotid and radial arterial sites with a single time scale, which eliminates time synchronization complexity.

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© 2015 Society of Photo-Optical Instrumentation Engineers

Citation

Sharath Umesh ; Srivani Padma ; Shikha Ambastha ; Anand Kalegowda and Sundarrajan Asokan
"Pulse transit time differential measurement by fiber Bragg grating pulse recorder", J. Biomed. Opt. 20(5), 057005 (May 28, 2015). ; http://dx.doi.org/10.1117/1.JBO.20.5.057005


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