Differential effects of digitalis on chemoreflex responses in humans.
Differential effects of digitalis on chemoreflex responses in humans.
复制标题
洋地黄对人类化学反射反应的不同影响。
DOI:
10.1161/01.hyp.23.3.302
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发表时间:
1994
期刊:
影响因子:
--
通讯作者:
Somers,VK
中科院分区:
文献类型:
--
作者:
Schobel,HP;Ferguson,DW;Clary,MP;Somers,VK
To investigate the effects of digitalis on chemoreflexes in humans, we measured muscle sympathetic nerve activity (microneurography), minute ventilation, oxygen saturation, end-tidal carbon dioxide, mean arterial pressure, heart rate, and central venous pressure during stimulation of peripheral chemoreceptors with hypoxia, during stimulation of central chemoreceptors with hypercapnia, and during a cold pressor test before and after digitalis and placebo in 10 healthy volunteers on two different days (randomized, double-blind, cross-over design). Digitalis did not affect baseline measurements significantly. Despite similar changes in oxygen saturation and end-tidal carbon dioxide during hypoxia and hypercapnia with both placebo and digitalis, digitalis significantly potentiated overall ventilatory responses to hypoxia (+67 +/- 12% before versus +98 +/- 3% after digitalis; mean +/- SEM; P < .01) but did not affect the response to hypercapnia. Sympathetic nerve activity increased by 25 +/- 9% during hypoxia before digitalis and 30 +/- 10% during hypoxia after digitalis (P = NS) and increased by 38 +/- 18% during hypercapnia before digitalis and 26 +/- 11% during hypercapnia after digitalis (P = NS). Digitalis did not significantly change responses to the cold pressor test. Placebo had no effect on ventilatory and sympathetic nerve activity responses. We conclude that digitalis selectively augments ventilatory responses to peripheral chemoreceptor stimulation by hypoxia.
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影响因子:
24
作者:
M. Sullivan;J. Atwood;J. Myers;J. Feuer;P. Hall;B. Kellerman;S. Forbes;V. Froelicher
通讯作者:
V. Froelicher
DOI:
--
发表时间:
1983
期刊:
Journal of Physiology
影响因子:
--
作者:
D. McQueen;J. Ribeiro
通讯作者:
J. Ribeiro
DOI:
10.3109/10641968409062576
发表时间:
1984
期刊:
Clinical and experimental hypertension. Part A, Theory and practice
影响因子:
--
作者:
M. Devynck;M. Pernollet;J. Cloix;H. de Thé;L. Kamal;J. Elghozi;J. Rosenfeld;P. Meyer
通讯作者:
P. Meyer
影响因子:
15.9
作者:
HEISTAD, DD;ABBOUD, FM;SCHMID, PG
通讯作者:
SCHMID, PG
DOI:
10.1056/nejm198703053161010
发表时间:
1987
期刊:
The New England journal of medicine
影响因子:
--
作者:
F. Haddy
通讯作者:
F. Haddy