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Title of Journal: Ann Biomed Eng

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Abbravation: Annals of Biomedical Engineering

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Springer US

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DOI

10.1007/s11071-014-1707-4

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1573-9686

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Influence of Different Presentations of Oscillomet

Authors: Vojko Jazbinsek Janko Luznik Stephan Mieke Zvonko Trontelj
Publish Date: 2009/12/02
Volume: 38, Issue: 3, Pages: 774-787
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Abstract

Most noninvasive blood pressure measurements are based on either the auscultatory or the oscillometric technique In this study we performed an extensive analysis of the signals ie responses of a microphone implanted in the cuff and pressure changes in the cuff which can be recorded during such measurements We applied several methods to separate the cuff deflation from the arterial pressure pulses as well as to separate the microphone data into an audible part Korotkoff sounds and a low frequency part The oscillometric technique is based on some empirically derived criteria applied to the oscillometric index which is defined as a certain characteristic physical property of pressure pulses In addition to the pressure pulses which are a typical physical property used for the oscillometric index we also used in this study other properties such as a time derivative and an audible part of data measured by a microphone implanted in the cuff Korotkoff sounds We performed a case study of 23 healthy subjects to evaluate the influence of different presentations of the oscillometric index on known heightbased and slopebased empirical algorithms for the automatic determination of the systolic and diastolic blood pressures

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