Searched for: subject%3A%22Brachial%255C%2BArtery%22
(1 - 10 of 10)
document
Ferreira, I. (author), Snijder, M.B. (author), Twisk, J.W.R. (author), van Mechelen, W. (author), Kemper, H.C.G. (author), Seidell, J.C. (author), Stehouwer, C.D.A. (author), TNO Arbeid (author)
Central and peripheral fatness seem to confer opposite (i.e. adverse vs. protective) effects on cardiovascular risk, but how this occurs is not clear. In addition, the role of peripheral lean mass needs to be elucidated. We therefore investigated, in 336 (175 women) 36-yr-old and apparently healthy adults, the relationship between trunk fat,...
article 2004
document
Guelen, I. (author), Westerhof, B.E. (author), van der Sar, G.L. (author), van Montfrans, G.A. (author), Kiemeneij, F. (author), Wesseling, K.H. (author), Bos, W.J.W. (author), Gaubius Instituut TNO (author)
Objective: To evaluate three methods aimed at the reconstruction of brachial pressure from non-invasive finger arterial pressure measurements as implemented in the Finometer™, (FMS, Finapres Measurement Systems, Arnhem, Netherlands), the successor to the Finapres™ (TNO Siomedical Instrumentation, Amsterdam, Netherlands). Methods: Finger arterial...
article 2003
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TNO Kwaliteit van Leven (author), Hehenkamp, W.J.K. (author), Rang, S. (author), van Goudoever, J. (author), Bos, W.J.W. (author), Wolf, H. (author), van der Post, J.A.M. (author)
Background: Continuous beat-to-beat noninvasive blood pressure (BP) measurement is possible with Portapres®. It constructs finger arterial waveforms beat-to-beat. Dedicated software is used to analyze the arterial waveforms. A new technique has been developed to reconstruct brachial intraarterial pressure that uses return to flow (RTF). This...
article 2002
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Castiglioni, P. (author), Parati, G. (author), Omboni, S. (author), Mancia, G. (author), Imholz, B.P.M. (author), Wesseling, K.H. (author), di Rienzo, M. (author), TNO Biomedical Instrumentation (author)
The present study compares the spectral characteristics of 24-h blood pressure variability estimated invasively at the brachial artery level with those estimated by measurement of blood pressure at the finger artery using the non-invasive Portapres device. Broad-band spectra (from 3 x 10<sup>-5</sup> to 0.5 Hz) were derived from both finger and...
article 1999
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Jellema, W.T. (author), Imholz, B.P.M. (author), Oosting, H. (author), Wesseling, K.H. (author), van Lieshout, J.J. (author), TNO Biomedical Instrumentation (author)
Objective: The aim of this study was to compare beat-to-beat changes in stroke volume (SV) estimated by two different pressure wave analysis techniques during orthostatic stress testing: pulse contour analysis and Modelflow, ie, simulation of a three-element model of aortic input impedance. Methods: A reduction in SV was introduced in eight...
article 1999
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Langewouters, G.J. (author), Settels, J.J. (author), Roelandt, R. (author), Wesseling, K.H. (author), Technisch Physische Dienst TNO - TH (author)
In the clinic, blood pressure is measured almost exclusively using non- invasive intermittent techniques, of which the auscultatory (Riva- Rocci/Korotkoff, RRK) and the computerized oscillometric method are most often used. However, both methods only provide a momentary value. In addition, the accuracy is hampered by phenomena such as cuff...
article 1998
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Stergiopulos, N. (author), Westerhof, B.E. (author), Westerhof, N. (author), TNO Biomedical Instrumentation (author)
We propose a new method to derive aortic pressure from peripheral pressure and velocity by using a time domain approach. Peripheral pressure is separated into its forward and backward components, and these components are then shifted with a delay time, which is the ratio of wave speed and distance, and added again to reconstruct aortic pressure....
article 1998
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Gizdulich, P. (author), Prentza, A. (author), Wesseling, K.H. (author), TNO Biomedical Instrumentation (author)
Objective: To model the pulse wave distortion and pressure decrement occurring between brachial and finger arteries. Distortion reversion and decrement correction were also our aims. Methods: Brachial artery pressure was recorded intra-arterially and finger pressure was recorded non-invasively by the Finapres technique in 53 adult human subjects...
article 1997
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Gizdulich, P. (author), Imholz, B.P.M. (author), van den Meiracker, A.H. (author), Parati, G. (author), Wesseling, K.H. (author), TNO Biomedical Instrumentation (author)
Objective. Arterial pressure waveforms distort between brachial and finger arteries, causing differences mainly in systolic pressure. Distortion, reportedly, can be removed by applying a waveform filter to the finger pressure. Design. We analysed the data from two studies that detected discrepancies in systolic tracking between Finapres and...
article 1996
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Jellema, W.T. (author), Imholz, B.P.M. (author), van Goudoever, J. (author), Wesseling, K.H. (author), van Lieshout, J.J. (author), Technisch Physische Dienst TNO - TH (author)
1. The aims of this study were to determine the clinical feasibility of continuous, non-invasive Finapres recordings as a replacement for intrabrachial pressure during a 30 min head-up tilt, and the reliability of continuous cardiac output computation by pulse contour analysis from the finger arterial versus the brachial waveform. 2. In eight...
article 1996
Searched for: subject%3A%22Brachial%255C%2BArtery%22
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