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http://dx.doi.org/10.5369/JSST.2013.22.2.136

Estimation of the Blood Pressure Using Point Variation Aspect of Dicrotic Notch on Pulsating Waveform at Each Cardiac Periods  

Baik, Seongwan (Department of Anesthesia and Pain Medicine, College of Medicine Pusan National University)
Park, Sungmin (Department of Interdisciplinary program in Biomedical Engineering, School of Medicine, Pusan National University)
Shon, Jungman (Department of Interdisciplinary program in Biomedical Engineering, School of Medicine, Pusan National University)
Park, Geunchul (Department of Interdisciplinary program in Biomedical Engineering, School of Medicine, Pusan National University)
Lee, Sanghoon (Department of Interdisciplinary program in Biomedical Engineering, School of Medicine, Pusan National University)
Jang, Wooyoung (Department of Interdisciplinary program in Biomedical Engineering, School of Medicine, Pusan National University)
Jeon, Ahyoung (Department of Interdisciplinary program in Biomedical Engineering, School of Medicine, Pusan National University)
Jeon, Gyerok (Department of Biomedical Engineering, School of Medicine, Pusan National University)
Publication Information
Journal of Sensor Science and Technology / v.22, no.2, 2013 , pp. 136-143 More about this Journal
Abstract
In the study, novel blood pressure estimation method was proposed to improve the accuracy of oscillometric method. The proposed algorithm estimated the blood pressure by comparing and analyzing the point variation aspect of dicrotic notch on pulsating waveform during each cardiac cycle. The waveforms of each cardiac cycle were extracted by maximum points. The extracted pulsating waveforms were applied by re-sampling, end-matching, and normalization. The systolic and diastolic blood pressures were estimated by point variation aspect of dicrotic notch. The blood pressures, which were estimated from proposed algorithm, were compared and analyzed by blood pressures from oscillometric methods and auscultation. The systolic blood pressure from oscillometric methods were +0.88 mmHg more than proposed algorithm, and 1.875 less than the diastolic blood pressures from proposed algorithm. The systolic and diastolic blood pressures from auscultation were 2.89 mmHg and 3.44 mmHg less than the blood pressures from proposed algorithm. As the errors between blood pressures from proposed algorithm, oscillometric method and auscultation were less than 5 mmHg, the proposed algorithm was effective.
Keywords
Blood pressure; Point variation aspect; Dicrotic notch;
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