Zobrazeno 1 - 10
of 24
pro vyhledávání: '"C E W Hahn"'
Publikováno v:
International Journal of Condition Monitoring. 5(5)
Conventional methods for monitoring lung function usually require complex gas analysers and the cooperation of the patient. Therefore, they are not compatible with the crowded environment of the intensive care unit (ICU) or operating theatre, where p
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https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b88764ed9141c7aaddce1666d407e36e
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Autor:
C. E. W. Hahn
Publikováno v:
The Analyst. 123:57-86
This tutorial review charts the development of electrochemical sensors for the analysis of blood-gases, gases and vapours in clinical medicine over the past four decades. The development of each sensor is set in its historical and clinical context, a
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https://explore.openaire.eu/search/publication?articleId=doi_________::b769e3ce1e54ddf1f434197eea63f6d8
https://doi.org/10.1039/a708951a
https://doi.org/10.1039/a708951a
Autor:
David J. Gavaghan, C. E. W. Hahn
Publikováno v:
Respiration Physiology. 106:209-221
We have shown previously that it is possible to assess the cardio-respiratory function using sinusoidally oscillating inert gas forcing signals of nitrous oxide and argon (Hahn et al., 1993). This method uses an extension of a mathematical model of r
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https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9102344771bcb2f829fe7bf271f23439
https://doi.org/10.1016/s0034-5687(96)00066-7
https://doi.org/10.1016/s0034-5687(96)00066-7
Autor:
C. E. W. Hahn, David J. Gavaghan
Publikováno v:
Respiration Physiology. 102:105-120
The underlying mathematical model of the forcing sinewave alveolar amplitude response technique (AART) for measuring lung volume and perfusion is investigated. Making use of numerical techniques, we are able to evaluate the effects of several assumpt
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https://doi.org/10.1016/0034-5687(95)00038-f
https://doi.org/10.1016/0034-5687(95)00038-f
Autor:
S. M. L. Burrough, C. E. W. Hahn, J. B. Aspel, M. C. Sainsbury, A. M. S. Black, W. A. Ryder, L. Sutton, E.M. Williams, L. Xiong
Publikováno v:
Journal of Applied Physiology. 76:2130-2139
A theoretical model (Hahn et al. J. Appl. Physiol. 75: 1863–1876, 1993) predicts that the amplitudes of the argon and nitrous oxide inspired, end-expired, and mixed expired sinusoids at forcing periods in the range of 2–3 min (frequency 0.3–0.5
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https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cd12123f28b7c954f20c2f985cace342
https://doi.org/10.1152/jappl.1994.76.5.2130
https://doi.org/10.1152/jappl.1994.76.5.2130
Publikováno v:
British Journal Of Anaesthesia. 88(6)
Measures of impairment of oxygenation can be affected by the inspired oxygen fraction.We used a mathematical model of an inhomogenous lung to predict the effect of increasing inspired oxygen concentration (FIO2) on: (1) venous admixture (Qva/Qt); (2)
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http://ora.ox.ac.uk/objects/uuid:3bf564ef-e8d0-490e-8bf2-e1c5d611e172
http://ora.ox.ac.uk/objects/uuid:3bf564ef-e8d0-490e-8bf2-e1c5d611e172
Autor:
C. E. W. Hahn
Publikováno v:
Journal of applied physiology (Bethesda, Md. : 1985). 81(2)
A sinusoidal forcing function inert-gas-exchange model (C. E. W. Hahn, A. M. S. Black, S. A. Barton, and I. Scott. J. Appl. Physiol. 75: 1863–1876, 1993) is modified by replacing the inspired inert gas with oxygen, which then behaves mathematically
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https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cebd2b2716a825e8d184e9703dc749d0
https://pubmed.ncbi.nlm.nih.gov/8872671
https://pubmed.ncbi.nlm.nih.gov/8872671
Autor:
A. M. S. Black, C. E. W. Hahn, P. A. Oakley, M.C. Sainsbury, L. Xiong, E.M. Williams, David J. Gavaghan
Publikováno v:
Scopus-Elsevier
In a model lung, airways dead-space can be accurately measured using a forced inspired oscillating argon signal, which varies sinusoidally about a mean concentration of 6% v/v with an amplitude of +/- 4% v/v. With sinusoid forcing periods longer than
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https://pubmed.ncbi.nlm.nih.gov/8171946
https://pubmed.ncbi.nlm.nih.gov/8171946
Autor:
C. E. W. Hahn, E. M. Williams
Publikováno v:
Advances in Experimental Medicine and Biology ISBN: 9781461357636
The possibility of using inspiratory, oscillating inert gas concentration forcing signals to measure the average lung ventilation-perfusion ratio was proposed by Zwart and colleagues (1976, 1978). These authors used halothane as the forcing gas, at s
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https://doi.org/10.1007/978-1-4615-1875-4_24
https://doi.org/10.1007/978-1-4615-1875-4_24
