Zobrazeno 1 - 10
of 212
pro vyhledávání: '"John V Tyberg"'
Autor:
Amelie Stritzke, Prashanth Murthy, Sharandeep Kaur, Verena Kuret, Zhiying Liang, Sarah Howell, John V Tyberg
Publikováno v:
BMJ Paediatrics Open, Vol 3, Iss 1 (2019)
Objective Significant haemodynamic changes occur at delivery impacting organ blood flow distribution. We aimed to characterise Doppler indices patterns over time in three different organs (brain, gut and kidney) and test them as measures of vascular
Externí odkaz:
https://doaj.org/article/4d26bf603df8458fa75347df5bc02f5f
Autor:
John V. Tyberg
Publikováno v:
Exploration of Medicine, Vol 2, Iss 3, Pp 198-207 (2021)
Some have said that it is inappropriate and perhaps impossible to consider wave and Windkessel phenomena simultaneously. For 50 years, arterial hemodynamics has been dominated by the frequency-domain “impedance analysis” in which it was assumed t
Externí odkaz:
https://doaj.org/article/db80f9f6fd7448a789edb4930bf3176e
Autor:
Sarah Howell, BSc, MSc, Lindsay M. Burrowes, BEng (Mech), MD, PhD, Israel Belenkie, MD, Henk E.D.J. ter Keurs, MD, PhD, Lucy Lei, BHSc, Satish R. Raj, MD, MSCI, J. Christopher Bouwmeester, BEng (Mech), PhD, Robert S. Sheldon, MD, PhD, Nigel G. Shrive, PhD, John V. Tyberg, MD, PhD
Publikováno v:
CJC Open, Vol 1, Iss 2, Pp 84-92 (2019)
Background: The purpose of this article is to examine the systemic circulation and left ventricular (LV) performance by alternative, nonconventional approaches: systemic vascular conductance (GSV) and the head-capacity relation (ie, the relation betw
Externí odkaz:
https://doaj.org/article/eb9ea06841d740ac9311c5a78be1fade
Publikováno v:
Advances in Physiology Education. 46:282-285
While the effects of changing heart rate and systemic vascular resistance have been generally understood and appreciated, the effects of changes in left ventricular contractility on end-systolic volume may have been less understood and appreciated an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::47ee8533e385d54628c895c63bc846b2
https://doi.org/10.1152/advan.00160.2021
https://doi.org/10.1152/advan.00160.2021
Autor:
John V. Tyberg, J. Christopher Bouwmeester, Lindsay M. Burrowes, Kim H. Parker, Nigel G. Shrive, Jiun-Jr. Wang
Publikováno v:
Artery Research, Vol 10 (2015)
A hydraulic teaching model of the human systemic circulation is proposed, based on the principles of the reservoir-wave approach. Reservoir characteristics are portrayed by the arterial tall-and-narrow and venous short-and-wide columns, the relative
Externí odkaz:
https://doaj.org/article/90bcc4f3525e4020affef98c0ef8d5ff
Autor:
Henk E.D.J. ter Keurs, Nigel G. Shrive, John V. Tyberg, Satish R. Raj, Lucy Y. Lei, Israel Belenkie, Robert S. Sheldon, J. Christopher Bouwmeester, Sarah Howell, Lindsay M. Burrowes
Publikováno v:
CJC Open, Vol 1, Iss 2, Pp 84-92 (2019)
CJC Open
CJC Open
Background: The purpose of this article is to examine the systemic circulation and left ventricular (LV) performance by alternative, nonconventional approaches: systemic vascular conductance (GSV) and the head-capacity relation (ie, the relation betw
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::eaa8b89f0e967ec9025af7300d6042dc
http://www.sciencedirect.com/science/article/pii/S2589790X19300083
http://www.sciencedirect.com/science/article/pii/S2589790X19300083
Publikováno v:
European Heart Journal - Cardiovascular Imaging. 23:600-600
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b5cc0772bc8ed87870083cbce6f0ac67
https://doi.org/10.1093/ehjci/jeac024
https://doi.org/10.1093/ehjci/jeac024
Autor:
Carmen P Lydell, Yoko Mikami, John V. Tyberg, Alessandro Satriano, Andrew G Howarth, Nowell M. Fine, Monica M. Attwood, James A. White, Derek V. Exner, Bobak Heydari, Mariam Narous
Publikováno v:
The International Journal of Cardiovascular Imaging
Two-dimensional (2D) strain analysis is constrained by geometry-dependent reference directions of deformation (i.e. radial, circumferential, and longitudinal) following the assumption of cylindrical chamber architecture. Three-dimensional (3D) princi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ebe0ff66999d1b5230c1f7db0fc09050
https://doi.org/10.1007/s10554-017-1199-7
https://doi.org/10.1007/s10554-017-1199-7
Autor:
Barry A. Borlaug, Andrew Grant, J. Christopher Bouwmeester, Lindsay M. Burrowes, Nowell M. Fine, Anukul Ghimire, Mads J. Andersen, Israel Belenkie, John V. Tyberg
Publikováno v:
Journal of Applied Physiology. 121:1348-1353
Using the reservoir-wave approach (RWA) we previously characterized pulmonary vasculature mechanics in a normal canine model. We found reflected backward-traveling waves that decrease pressure and increase flow in the proximal pulmonary artery (PA).
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3d7c5d8157a9884d52c9ec7d13932091
https://doi.org/10.1152/japplphysiol.00697.2016
https://doi.org/10.1152/japplphysiol.00697.2016
Publikováno v:
Canadian Journal of Cardiology. 32:1378-1380
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::48aeea07ea5f9698bd4d442ed3b553b9
https://doi.org/10.1016/j.cjca.2016.05.019
https://doi.org/10.1016/j.cjca.2016.05.019