A Simulation for Estimation of the Blood Pressure using Arterial Pressure-volume Model

A analysis on the conventional the blood pressure estimation method using an oscillometric sphygmomanometer was performed through a computer simulation using an arterial pressure-volume (APV) model. Traditionally, the maximum amplitude algorithm (MAP) was applied on the oscillation waveforms of the APV model to obtain the mean arterial pressure and the characteristic ratio. The estimation of mean arterial pressure and characteristic ratio was significantly affected with the shape of the blood pressure waveforms and the cutoff frequency of high-pass filter (HPL) circuitry. Experimental errors are due to these effects when estimating blood pressure. To find out an algorithm independent from the influence of waveform shapes and parameters of HPL, the volume oscillation of the APV model and the phase shift of the oscillation with fast fourier transform (FFT) were testified while increasing the cuff pressure from 1 mmHg to 200 mmHg (1 mmHg per second). The phase shift between the ranges of volume oscillation was then only observed between the systolic and the diastolic blood pressures. The same results were also obtained from the simulations performed on two different the arterial blood pressure waveforms and one hyperthermia waveform. Keywords—Arterial blood pressure, oscillometric method. This work was supported by health medical technology research of Ministry of Health and Welfare. (02-PJ3-PG6-EV05-0001) Gye-rok Jeon is with the Department of Biomedical Engineering College of Medicine, Pusan National University, Busan, Korea (e-mail: [email protected]). Jae-hee Jung is with the Department of Interdisciplinary program in Biomedical Engineering, Pusan National University, Busan, Korea (e-mail: espouir82 @hanmail.net). In-cheol Kim is with the Department of Interdisciplinary program in Biomedical Engineering, Pusan National University, Busan, Korea (e-mail: [email protected]). A-young Jeon is with the Department of Interdisciplinary program in Biomedical Engineering, Pusan National University, Busan, Korea (e-mail: [email protected]). Sang-hwa Yoon is with PhysioLab Corp., Busan, Korea (e-mail: [email protected]). Jung-man Son is with T.P. Technology Inc., Gyeonggi, Korea (e-mail: [email protected]). Jae-hyung Kim is with the Department of Physics, Inje University, Kyungnam, Korea (e-mail: [email protected]). Soo-young Ye is the BK21 Medical Science Education Center, School of medicine,Pusan National Universiry, Busan, Korea (e-mail: [email protected]). Jung-hoon Ro is with the Department of Biomedical Engineering College of Medicine,Pusan National University, Busan, Korea (e-mail: [email protected]) Dong-hyun Kim is with center for health promotion of Pusan National University hospital, Busan, Korea ([email protected]). Chul-han Kim is with the Department of Electrical Engineering, Dong-A University, Busan, Korea (Corresponding author to provide phone: 82-51-257-2866; fax: 82-51-257-2867; e-mail: [email protected]).