Zobrazeno 1 - 10 of 45 pro vyhledávání: '"Sjoerd P Niehof"'
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Akademický článek
Small intra-individual variability of the pre-ejection period justifies the use of pulse transit time as approximation of the vascular transit.
Autor: Minke C Kortekaas, Marit H N van Velzen, Frank Grüne, Sjoerd P Niehof, Robert J Stolker, Frank J P M Huygen
Publikováno v: PLoS ONE, Vol 13, Iss 10, p e0204105 (2018)
BACKGROUND:Vascular transit time (VTT) is the propagation time of a pulse wave through an artery; it is a measure for arterial stiffness. Because reliable non-invasive VTT measurements are difficult, as an alternative we measure pulse transit time (P
Externí odkaz: https://doaj.org/article/abe50fb9a48342b8a1d050c8e0edd081
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2
Pulse transit time as a proxy for vasoconstriction in younger and older adults
Autor: Carel G. M. Meskers, Sjoerd P. Niehof, Andrea B. Maier, Arjen Mol, Richard J. A. van Wezel
Publikováno v: Experimental Gerontology, 135:110938. Elsevier
Experimental Gerontology, 135:110938. Elsevier Inc.
Mol, A, Meskers, C G M, Niehof, S P, Maier, A B & van Wezel, R J A 2020, ' Pulse transit time as a proxy for vasoconstriction in younger and older adults ', Experimental Gerontology, vol. 135, 110938 . https://doi.org/10.1016/j.exger.2020.110938
Experimental Gerontology, 135:110938, 1-7. Elsevier Inc.
Mol, A, Meskers, C G M, Niehof, S P, Maier, A B & van Wezel, R J A 2020, ' Pulse transit time as a proxy for vasoconstriction in younger and older adults ', Experimental Gerontology, vol. 135, 110938, pp. 1-7 . https://doi.org/10.1016/j.exger.2020.110938
Objectives: Changes of vasoconstriction may be measured non-invasively using pulse transit time. This study assessed the sensitivity, test-retest reliability and validity of pulse transit time during vasoconstriction provocation and active standing,
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3d1c1922b3eca36dbd9c19e36690c51a
https://research.utwente.nl/en/publications/5d91bd0f-c064-4a9d-a58e-45d121ba2451
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3
Measuring pulse wave velocity with a novel, simple sensor on the fingertip: a feasibility study in healthy volunteers
Autor: Sjoerd P. Niehof, Marit H. N. van Velzen, Arjo J. Loeve, Egbert G. Mik
Publikováno v: Biomedical Physics & Engineering Express, 5(6):Unsp 065010. IOP Publishing Ltd.
Biomedical Physics & Engineering Express, 5(6)
Objective: The speed of pressure pulses traveling through the blood, the pulse wave velocity (PWV), is a metric that provides substantial information about the passive and active elasticity of the blood vessels. Therefore, PWV is a valuable parameter
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::247b616cbf42bff5f5f74c824cf45c1a
https://hdl.handle.net/1765/121106
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4
Comparison between pulse wave velocities measured using Complior and measured using Biopac
Autor: Robert Jan Stolker, Sjoerd P. Niehof, Marit H. N. van Velzen, Arjo J. Loeve, Egbert G. Mik
Publikováno v: Journal of Clinical Monitoring and Computing, 33(2)
Journal of Clinical Monitoring and Computing, 33(2), 241-247. Springer Netherlands
Journal of Clinical Monitoring and Computing
Arterial stiffness is a reliable prognostic parameter for cardiovascular diseases. The effect of change in arterial stiffness can be measured by the change of the pulse wave velocity (PWV). The Complior system is widely used to measure PWV between th
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d10d8354f391d28afbf473c1432ba19b
http://resolver.tudelft.nl/uuid:f2e48670-a5c1-4f26-83fe-6489c1eabd2d
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5
Reproducibility of axon reflex-related vasodilation assessed by dynamic thermal imaging in healthy subjects
Autor: Frank J P M Huygen, Alfred C. Schouten, F.C.T. van der Helm, Mariska D Nieuwenhoff, Yinglei Wu, Sjoerd P. Niehof
Publikováno v: Microvascular Research, 106
Microvascular research, 106(July 01), 1-7. Academic Press
Microvascular Research, 106, 1-7. Academic Press
Introduction: Small nerve fiber dysfunction is an early feature of diabetic neuropathy. There is a strong clinical need for a non-invasive method to assess small nerve fiber function. Small nerve fibers mediate axon reflex-related vasodilation and pl
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::94bb588fa08935f08035adc010f5d3a4
https://pure.eur.nl/en/publications/de1b549d-9129-4011-81b1-055ec5faab15
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6
Design and functional testing of a novel blood pulse wave velocity sensor
Autor: Sjoerd P. Niehof, Egbert G. Mik, Marit H. N. van Velzen, Arjo J. Loeve
Publikováno v: Journal of Medical Devices, 12(1)
Journal of Medical Devices, 12(1):011006. The American Society of Mechanical Engineers (ASME)
The multiphotodiode array (MPA) is a novel transmission photoplethysmography (PPG) sensor to measure pulse wave velocity (PWV) in the finger. To validate the MPA, a setup was built to generate a red laser dot traveling over the MPA with known and con
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a90cfd31b4c6ffdf8d20653ebc6c1ae7
http://resolver.tudelft.nl/uuid:2e68df6d-168d-431e-9745-3807cfbdaea2
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7
Small intra-individual variability of the pre-ejection period justifies the use of pulse transit time as approximation of the vascular transit
Autor: Frank J P M Huygen, Frank Grüne, Minke C. Kortekaas, Marit H. N. van Velzen, Sjoerd P. Niehof, Robert Jan Stolker
Publikováno v: PLoS ONE, Vol 13, Iss 10, p e0204105 (2018)
PLoS ONE
PLoS One (online), 13(10):e0204105. Public Library of Science
Background Vascular transit time (VTT) is the propagation time of a pulse wave through an artery; it is a measure for arterial stiffness. Because reliable non-invasive VTT measurements are difficult, as an alternative we measure pulse transit time (P
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b40c583ed2635d065016caf121a907b4
http://europepmc.org/articles/PMC6179208?pdf=render
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8
Postural change in volunteers: sympathetic tone determines microvascular response to cardiac preload and output increases
Autor: Sjoerd P. Niehof, Jasper van Bommel, A. B. Johan Groeneveld, Eva Klijn, Jan Bakker, Alexandre Lima
Publikováno v: Clinical Autonomic Research
Clinical Autonomic Research, 25(6), 347-354. D. Steinkopff-Verlag
Purpose Microvascular perfusion may be a non-invasive indicator of fluid responsiveness. We aimed to investigate which of the microvascular perfusion parameters truly reflects fluid responsiveness independent of sympathetic reflexes. Methods Fifteen
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8207546b8fdf5e0b0f9b1b674a952819
https://doi.org/10.1007/s10286-015-0286-x
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9
Diurnal and Nocturnal Skin Temperature Regulation in Chronic Complex Regional Pain Syndrome
Autor: Johanna C.M. Schilder, Jacobus J. van Hilten, Sjoerd P. Niehof, Johan Marinus
Publikováno v: Journal of Pain, 16(3), 207-213
Journal of Pain, 16(3), 207-213. Churchill Livingstone
Skin temperature changes due to vasomotor disturbances are important features of complex regional pain syndrome (CRPS). Because this phenomenon has only been studied under controlled conditions, information on daily circadian variability is lacking.
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d9ee5948cefc220aae8c2d3623941604
https://pure.eur.nl/en/publications/d6fe2d54-0015-4a8a-88e2-a510b6b32a6a
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10
Increasing accuracy of pulse transit time measurements by automated elimination of distorted photoplethysmography waves
Autor: Egbert G. Mik, Marit H. N. van Velzen, Sjoerd P. Niehof, Arjo J. Loeve
Publikováno v: Medical & Biological Engineering & Computing, 55(11)
Medical & Biological Engineering & Computing, 55(11), 1989-2000. Springer-Verlag
Medical & Biological Engineering & Computing
Photoplethysmography (PPG) is a widely available non-invasive optical technique to visualize pressure pulse waves (PWs). Pulse transit time (PTT) is a physiological parameter that is often derived from calculations on ECG and PPG signals and is based
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::dc65f119fa5930488d213b5dcf78e870
http://resolver.tudelft.nl/uuid:7e6b69cd-7156-4c07-9ea8-7b537555dc69
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