Výsledky vyhledávání - "Harrieth, Wagner"

Akademický článek

Ventilation–perfusion heterogeneity measured by the multiple inert gas elimination technique is minimally affected by intermittent breathing of 100% O2

Autor: Ann R. Elliott, Abhilash S. Kizhakke Puliyakote, Vincent Tedjasaputra, Beni Pazár, Harrieth Wagner, Rui C. Sá, Jeremy E. Orr, G. Kim Prisk, Peter D. Wagner, Susan R. Hopkins

Publikováno v: Physiological Reports, Vol 8, Iss 13, Pp n/a-n/a (2020)

Abstract Proton magnetic resonance (MR) imaging to quantify regional ventilation–perfusion ( V˙A/Q˙) ratios combines specific ventilation imaging (SVI) and separate proton density and perfusion measures into a composite map. Specific ventilation

Externí odkaz: https://doaj.org/article/58a9fee3a67c46ffb8a8d293e1b0d1bc

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Exercise-induced increase in hemoglobin concentration at intermediate and high altitudes in Andeans, Tibetans and Han Chinese

Autor: M. Yan, G. Qin, Francisco C. Villafuerte, Cecilia Anza, Peter D. Wagner, José Luis Macarlupú, Tatum S. Simonson, G. Wei, Gustavo Vicardo, Ian Xu, Tana Wuren, Ri-Li Ge, Wanjun Gu, Harrieth Wagner

An acute increase in hemoglobin concentration ([Hb]) up to 1.6 g/dL has been previously reported under the condition of exercise-induced hypoxemia in sea level individuals with COPD (Schagatay et.al 2015). Changes in [Hb] have been attributed to sple

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e4e7243a48251e7fabda62ae49cb71e6
https://hdl.handle.net/20.500.12866/8299

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Ventilation-perfusion heterogeneity measured by the multiple inert gas elimination technique is minimally affected by intermittent breathing of 100% O

Autor: Ann R, Elliott, Abhilash S, Kizhakke Puliyakote, Vincent, Tedjasaputra, Beni, Pazár, Harrieth, Wagner, Rui C, Sá, Jeremy E, Orr, G Kim, Prisk, Peter D, Wagner, Susan R, Hopkins

Publikováno v: Physiological Reports

Proton magnetic resonance (MR) imaging to quantify regional ventilation–perfusion ( V˙A/Q˙) ratios combines specific ventilation imaging (SVI) and separate proton density and perfusion measures into a composite map. Specific ventilation imaging e

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::0c6dfac4ea3ff3dd1033f136562f648e
https://pubmed.ncbi.nlm.nih.gov/32638530

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Precapillary pulmonary gas exchange is similar for oxygen and inert gases

Autor: Harrieth Wagner, Sophie É Collins, Desi P. Fuhr, Michael K. Stickland, Bradley W. Byers, Susan R. Hopkins, Vincent Tedjasaputra, Peter D. Wagner

Publikováno v: J Physiol

Key points Precapillary gas exchange for oxygen has been documented in both humans and animals. It has been suggested that, if precapillary gas exchange occurs to a greater extent for inert gases than for oxygen, shunt and its effects on arterial oxy

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::416d4180b0c9d36b2d53a3a3a43ffa69
https://europepmc.org/articles/PMC6858488/

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Cardiac output measurement during exercise in COPD : A comparison of dye dilution and impedance cardiography

Autor: Nikolaos Chynkiamis, Vasileios Andrianopoulos, Peter D. Wagner, Spyros Zakynthinos, Helmut Habazettl, Ioannis Vogiatzis, Stavroula Spetsioti, Zafeiris Louvaris, Harrieth Wagner

Introduction: Impedance cardiography (IC) derived from morphological analysis of the thoracic impedance signal is now commonly used for noninvasive assessment of cardiac output (CO) at rest and during exercise. However, in Chronic Obstructive Pulmona

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3e1b90dadafaba50c2295a5eb1940f0b

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Intra-pulmonary arteriovenous anastomoses and pulmonary gas exchange: evaluation by microspheres, contrast echocardiography and inert gas elimination

Autor: Michael K. Stickland, Susan R. Hopkins, Cameron Seaman, Vincent Tedjasaputra, Sophie É Collins, Harrieth Wagner, Desi P. Fuhr, Bradley W. Byers, Peter D. Wagner, Sean van Diepen

Publikováno v: The Journal of physiology. 597(22)

KEY POINTS Imaging techniques such as contrast echocardiography suggest that anatomical intra-pulmonary arteriovenous anastomoses (IPAVAs) are present at rest and are recruited to a greater extent in conditions such as exercise. IPAVAs have the poten

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6c651e9f7784f6950330c0ebda69d6d5
https://pubmed.ncbi.nlm.nih.gov/31529499

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Sea-level haemoglobin concentration is associated with greater exercise capacity in Tibetan males at 4200 m

Autor: M. Yan, G. Qin, G. Wei, Harrieth Wagner, Tana Wuren, Peter D. Wagner, Ri-Li Ge, Tatum S. Simonson

Publikováno v: Experimental Physiology. 100:1256-1262

New Findings What is the topic of this review? Recent developments link relatively lower hemoglobin concentration in Tibetans at high altitude to exercise capacity and components of oxygen transport. What advances does it highlight? Haemoglobin conce

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::07164f57a9f2c376406926e49aceb899
https://doi.org/10.1113/ep085036

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