A Hydrostatic Calibration Method for the Design of Wearable PAT-based Blood Pressure Monitoring Devices
Refereed conference paper presented and published in conference proceedings


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AbstractPulse arrival time (PAT) has been proposed for measuring blood pressure (BP) noninvasively and continuously. A challenge of the PAT-based BP measurement technique is to calibrate it individually. The objective of this study is to examine a previously proposed model-based calibration method utilizing hydrostatic pressure for BP estimation. A preliminary experiment has been conducted on eight subjects aged from 23 to 36. Each subject was asked to raise their right arms to five different heights (H). At each height, PAT and brachial BP were measured from the elevated arm and the resting arm respectively. The data recorded at each height were used to calibrate a subject-dependent coefficient b which was then used to estimate his/her brachial SBP before and after exercise. It was found that the estimation results were influenced by H and k, which is a constant time interval subtracted from PAT. In this study, the estimation errors were found to be more sensitive to H than to k for -30 <= H <= 30 cm and 40 <= k <= 70 ms.
All Author(s) ListLiu YB, Poon CCY, Zhang YT
Name of Conference30th Annual International Conference of the IEEE-Engineering-in-Medicine-and-Biology-Society
Start Date of Conference20/08/2008
End Date of Conference24/08/2008
Place of ConferenceVancouver
Country/Region of ConferenceCanada
Journal nameConference proceedings : ... Annual International Conference of the IEEE Engineering in Medicine and Biology Society
Detailed descriptionorganized by IEEE-EMBS,
Year2008
Month1
Day1
PublisherIEEE
Pages1308 - 1310
ISBN978-1-4244-1814-5
ISSN1557-170X
LanguagesEnglish-United Kingdom
Keywordsblood pressure; hydrostatic calibration; pulse transit time; Wearable devices
Web of Science Subject CategoriesEngineering; Engineering, Biomedical; Engineering, Electrical & Electronic

Last updated on 2020-16-10 at 00:33