NDLI: Systolic blood pressure accuracy enhancement in the electronic palpation method using pulse waveform

Content Provider	IEEE Xplore Digital Library
Author	Sorvoja, H.S.S. Myllyla, R.A. Nissila, S.M. Karja-Koskenkari, P.M. Koskenkari, J.K. Lilja, M.K. Kesaniemi, Y.A.
Copyright Year	2001
Description	Author affiliation: Dept. of Electr. Eng., Oulu Univ., Finland (Sorvoja, H.S.S.; Myllyla, R.A.)
Abstract	This paper presents and evaluates some methods to improve the accuracy of systolic blood pressure measurements based on the pulse waveform. A set of measurement was carried out with elderly cardiac surgery patients. The experiments comprised two to five measurements per patient, each including a one-minute follow-up, after which the cuff was slowly inflated over the systolic blood pressure. Systolic pressure errors were defined and correlations with other specific values, like pressure rise time, pulse wave velocity, systolic pressure, augmentation, arm circumference and body mass index were calculated. These indices may he affected by arterial stiffness, a common source of errors in blood pressure measurements. With a value of -0.52, the character which correlated best with systolic error was found to be the peak level of the first derivative of the pressure signal. Also rise time (10%...90%) exhibits a moderate correlation, +0.49. On the other hand, pulse wave velocity, body mass index, cardiac output, peripheral and intra-arterial temperature do not seem to correlate with systolic blood pressure error. It is also noteworthy that indices describing the rising edge of the pressure pulse correlated better with systolic pressure error than those describing the failing part. Using the first derivative peak level method, the accuracy improved slightly.
Starting Page	222
Ending Page	225
File Size	272323
Page Count	4
File Format	PDF
ISBN	0780372115
ISSN	1094687X
DOI	10.1109/IEMBS.2001.1018895
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2001-10-25
Publisher Place	Turkey
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Blood pressure Pressure measurement Pulse measurements Biomedical monitoring Arteries Transducers Hospitals Surgery Brachytherapy Atherosclerosis
Content Type	Text
Resource Type	Article

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