Abstract—Blood Pressure (BP) measurement without using a cuff is an interesting goal especially during Exercise Stress Test. Conventional methods like Cuff-based blood pressure measurement is not accurate enough due to high motion artifacts. High blood pressure during exercise test will cause pain and discomfort during inflation of cuff as well. Many researches have been conducted and shown Pulse Arrival Time (PAT), can be used in blood pressure estimation. This paper proposes a new calibration method for blood pressure estimation during exercise stress test that increases the quality of estimation. Besides PAT and heart rate, estimated blood pressure of previous stage is added as another input parameter. This technique increases the correlation coefficients between real and estimated blood pressures. We also show that by using ΔPAT, ΔHR instead of PAT and HR quality of estimation improves.

Index Terms—Pulse transit time, pulse arrival time, bruce protocol, exercise stress test, calibration, delta PAT, delta HR.

S. Mottaghi and M. H. Moradi are with the Department of Biomedical Engieering, Amirkabir University of Technology (Tehran-Polytechnic) (e-mail: soheilmottaghi@ aut.ac.ir, mhmoradi@aut.ac.ir).
L. Roohisefat is with the Department of Telecommunication Engieering, K. N. Toosi University of Technology (e-mail: leyla.roohisefat@gmail.com).

Cite: S. Mottaghi, M. H. Moradi, and L. Roohisefat, "Cuffless Blood Pressure Estimation during Exercise Stress Test," International Journal of Bioscience, Biochemistry and Bioinformatics vol. 2, no. 6, pp. 394-397, 2012.