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Frontiers Med. Biol. Engng , Vol. 11, No. 3, pp. 207– 219 (2001) Ó VSP 2001. Original paper Indirect arterial blood pressure measurement at the wrist using a pad-type square cuff and volume-oscillometric method WEIMING LU 1 , AKIRA TSUKADA 1 , TAKEMASA SHIRAISHI 2 and KAZUO SASAKI 1 ; ¤ 1 Division of Bio-Information Engineering, Faculty of Engineering, Toyama University, 3190 Gofuku, Toyama 930-8555, Japan 2 Department of Physiology, School of medicine, Tokai University, Isehara, Kanagawa 259-1193, Japan Received 20 April 2001; revised 2 July 2001; accepted 30 August 2001 Abstract —Using theoretical and experimental approaches, we examined whether blood pressure at the wrist can be accurately measured by a volume-oscillometric method using a small pad-type square cuff placed above the radial artery (RA). Nuclear magnetic resonance imaging of the wrist allowed us to determine the geometry of two-dimensional(2-D) nite-element models. Finite-element method (FEM) analysis predicted that the pressure transmission ratio (calculated tissue pressure over externally applied pressure; square cuff to RA) was 98.8% for a cuff with a bladder sidelength 0.25 times the wrist diameter placed on the skin surface between the tendons of the brachioradialis muscle (T a ) and the exor capri
Frontiers of Medical & Biological Engineering – Brill
Published: Jan 1, 2001
Keywords: WRIST; VOLUME OSCILLOMETRIC METHOD; FINITE ELEMENT METHOD; BLOOD PRESSURE MEASUREMENT; MAGNETIC RESONANCE IMAGING; BLADDER SIDELENGTH; PAD-TYPE CUFF
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