Výsledky vyhledávání - "J G, Riddell"

Heart-Rate Variability Effects of β-Adrenoceptor Agonists (Xamoterol, Prenalterol, and Salbutamol) Assessed Nonlinearly with Scatterplots and Sequence Methods

Autor: J. G. Riddell, C G Hanratty, Bernard Silke

Publikováno v: Journal of Cardiovascular Pharmacology. 33:859-867

Full antagonists of the cardiac beta-adrenoceptor improve heart-rate variability (HRV) in humans; however, partial agonism at the beta2-adrenoceptor has been suggested to decrease HRV. We therefore studied the HRV effects of some partial agonists of

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b9baf94f8a7aabc9f3a417e6843940d6
https://doi.org/10.1097/00005344-199906000-00005

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Evaluation of the effect on heart rate variability of a β 2 ‐adrenoceptor agonist and antagonist using non‐linear scatterplot and sequence methods

Autor: Bernard Silke, J. G. Riddell, C G Hanratty

Publikováno v: British Journal of Clinical Pharmacology. 47:157-166

AIMS To examine the impact on heart rate variability (HRV), of agonism or antagonism at the cardiac beta2-adrenoceptor in healthy volunteers, using standard time-domain summary statistics and non-linear methods (scatterplot and quadrant analysis). ME

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8eaf650f40745731933197f50a704828
https://doi.org/10.1046/j.1365-2125.1999.00862.x

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[Untitled]

Autor: J. G. Riddell, Bernard Silke

Publikováno v: Cardiovascular Drugs and Therapy. 12:439-448

There is evidence that the processes regulating heart rate variability (HRV) reflect nonlinear complexity and show “chaotic” determinism. Data analyses using nonlinear methods may therefore reveal patterns not apparent with the standard methods f

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::75e18f6e132f67fc0960a14798408d0a
https://doi.org/10.1023/a:1007793730393

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Irish cardiac society

Autor: C. Seifer, B. McNeill, M. O’Donnell, K. Daly, J. Kellett, H. M. McGee, A. J. Montogomery, D. O’Callaghan, J. H. Horgan, N. G. Mahon, M. Codd, J. Brennan, B. Egan, H. A. McCann, D. D. Sugrue, I. B. A. Menown, R. S. H. W. Patterson, S. R. McMechan, S. Hameed, A. A. J. Adgey, S. H. Baird, S. J. McBride, T. G. Trouton, C. Wilson, J. P. McRedmond, D. J. Fitzgerald, J. J. Crowley, J-F. Tanguay, R. M. Santos, R. S. Stack, P. Keelan, C. J. McKenna, R. AuBuchon, A. R. Camrud, D. R. Holmes, R. S. Schwartz, R. Wolff, W. D. Edwards, C. Hanratty, D. McAuley, I. Young, G. Murtagh, B. O’Keeffe, G. Richardson, M. Scott, E. W. Chew, N. A. Bailie, A. M. J. Graham, H. O’Kane, H. M. Kwon, L. Ellis, R. Virmani, L. Noelke, A. E. Wood, H. Javadpour, D. Veerasingham, D. O’Kane, J. D. Allen, T. Hennessy, P. Johnson, D. Hildick-Smith, E. Winter, L. Shapiro, A. Lerman, L. T. McGrath, P. Passmore, B. Silke, A. G. Nugent, C. McGurk, S. Maguire, G. D. Johnston, S. L. Lovell, G. McDowell, D. McEneany, M. S. Riley, D. P. Nicholls, D. Gilligan, D. Sargent, D. Dan, G. Elam, B. Rhee, D. Keane, L. Zhou, B. McGovern, H. Garan, J. Ruskin, J. C. O’Shea, H-C. Tan, J. P. Zidar, D. B. O’Keeffe, S. Graffin, D. Fitzsimmons, S. Brown, D. Duff, B. Denham, F. Woods, M. Neligan, P. Oslizlok, C. K. Connolly, M. H. D. Danton, M. Danton, D. J. Gladstone, B. Craig, H. C. Mulholland, F. Casey, S. Chaudhuri, J. Hinchion, R. H. S. W. Patterson, G. MacKenzie, M. T. Harbinson, L. M. Burgess, V. Moohan, D. J. McEneaney, O. C. Finnegan, L. Doherty, J. G. Riddell, R. Meleady, L. Daly, I. Graham, M. Quinn, B. Foley, J. Lee, N. Mulvihill, P. Crean, M. Walsh, C. O’Morain, C. Hynes, S. M. King, S. David, H. Newton, M. Maguire, F. Rafferty, P. A. Sullivan, D. Murphy, S. Gallagher, J. Allen, J. McC Anderson, J. Hoag, D. Eckberg, J. Galvin, P. Diamond, T. Neilan, E. Keelan, null H. A., C. McCarthy, V. P. Moohan, G. M. Ayers, M. Roberts, L. Burgess, C. Anderson, M. Khan, I. P. Clements, W. L. Miller, F. Turtle, H. Long, W. McNair, N. P. S. Campbell, T. P. Mathew, M. Smye, G. S. Nesbitt, I. S. Young, D. Mulcahy, I. M. Graham, D. Moore, D. Sugrue, M. B. Codd, P. Zimmerman, J. Winget, M. Capeless, T. A. McKelvey, M. I. A. Sarsam, D. McEneaney

Publikováno v: Irish Journal of Medical Science. 167:5-25

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::cdf8bba5f92cf8f1067b32aa0c07c89f
https://doi.org/10.1007/bf02937898

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[Untitled]

Autor: Bernard Silke, A. Thompson, J. G. Riddell

Publikováno v: Cardiovascular Drugs and Therapy. 11:57-61

A double-blind, randomized, placebo-controlled comparison of metoprolol (50 mg) and celiprolol (200 mg) was undertaken in nine normal volunteers. Rest and exercise (supine bicycle) hemodynamics were assessed at 0, 2, 4, 6, and 8 hours following singl

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::3559d000c8f9f43df0f14134b8798d68
https://doi.org/10.1023/a:1007799807554

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The dose dependency of the alpha- and beta-adrenoceptor antagonist activity of carvedilol in man

Autor: J. G. Riddell, Robin G. Shanks, B. J. Mcdermott, S. Guy, T. C. K. Tham

Publikováno v: British Journal of Clinical Pharmacology. 40:19-23

1. The alpha- and beta-adrenoceptor antagonist activity of carvedilol, a beta-adrenoceptor antagonist with vasodilating properties, and labetalol were investigated in 10 healthy male subjects. They received infusions with serially increasing concentr

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::eff4dfa8824d36afb6026606de730c4e
https://doi.org/10.1111/j.1365-2125.1995.tb04529.x

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A placebo controlled comparison of the effects of metoprolol and celiprolol on echo-Doppler measurements of cardiovascular function in normal volunteers

Autor: A. Thompson, A. Leitch, J. G. Riddell, Bernard Silke

Publikováno v: British Journal of Clinical Pharmacology. 40:37-42

1. This study used a continuous-wave echo-Doppler method (Exerdrop) to investigate the effects of beta-adrenoceptor antagonism and partial agonism on cardiovascular responses at rest and during dynamic exercise. 2. A double-blind, randomised, placebo

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9d995ce2c91c974e5e382a4ed4e4e4c5
https://doi.org/10.1111/j.1365-2125.1995.tb04532.x

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Intra-articular ultrasonic stimulation and intracutaneous electrical stimulation: evoked potential and visual analogue scale data

Autor: Anthony Wright, J. G. Riddell, I. ab I. Davies

Publikováno v: Pain. 52:149-155

The reproducibility of focussed ultrasound-induced intra-articular pain was compared with that of electrically induced cutaneous pain over a period of time by measuring both the evoked potential (EP) amplitude and visual analogue scale (VAS) score. T

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::196a78a1ccd1c451e37b57b12b2c65fa
https://doi.org/10.1016/0304-3959(93)90126-a

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Beta-adrenoceptor modulation and heart rate variability--the value of scatterplot measures of compactness

Autor: B, Silke, C G, Hanratty, S M, Veres, J G, Riddell

Publikováno v: Cardiovascular drugs and therapy. 14(4)

This article compares different methods of scatterplot analysis to assess the optimal methodology. The scatterplot (Poincaré plot) is a nonlinear heart rate variability method where a "return map" is constructed by plotting each current cycle agains

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::721cd84ec8b2e8c539c8157e6eec2843
https://pubmed.ncbi.nlm.nih.gov/10999651

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Evaluation of the effect on heart rate variability of some agents acting at the beta-adrenoceptor using nonlinear scatterplot and sequence methods

Autor: B, Silke, J G, Riddell

Publikováno v: Cardiovascular drugs and therapy. 12(5)

There is evidence that the processes regulating heart rate variability (HRV) reflect nonlinear complexity and show "chaotic" determinism. Data analyses using nonlinear methods may therefore reveal patterns not apparent with the standard methods for H

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::dd0fd7d2c8ef9e4c3ada7e15f656004d
https://pubmed.ncbi.nlm.nih.gov/9926274

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