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
复制
发表时间:
1994
期刊:
Hypertension (Dallas, Tex. : 1979)
影响因子:
--
通讯作者:
Somers,VK
Somers,VK
中科院分区:
--
文献类型:
--
作者:
Schobel,HP;Ferguson,DW;Clary,MP;Somers,VK

文献摘要

参考文献

被引文献

相似文献

为了研究洋地黄对人体化学反射的影响,我们测量了10名健康志愿者在低氧刺激外周化学感受器、高碳酸血症刺激中枢化学感受器以及在洋地黄和安慰剂前后进行冷加压试验时的肌交感神经活动(显微神经学)、分钟通气量、血氧饱和度、呼气末二氧化碳、平均动脉压、心率和中心静脉压(随机双盲交叉设计)。洋地黄对基线测量没有显著影响。尽管在使用安慰剂和洋地黄的低氧和高碳酸血症期间,氧饱和度和呼气末二氧化碳的变化相似,洋地黄显著增强了对低氧的总体呼吸反应(洋地黄前+67+/-12%,洋地黄后+98+/-3%;平均值+/-扫描电子显微镜;P<0.01),但不影响对高二氧化碳的反应。洋地黄前低氧时交感神经活动增加25+/-9%,洋地黄后低氧时增加30+/-10%(P=NS),洋地黄前高碳酸血症时增加38+/-18%,洋地黄后高碳酸血症时增加26+/-11%(P=NS)。洋地黄没有显著改变对冷加压试验的反应。安慰剂对通气性和交感神经活动反应没有影响。我们的结论是,洋地黄选择性地增强了对低氧刺激外周化学感受器的呼吸反应。
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.
DOI: --
发表时间: 1989
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
哇巴因对猫颈动脉体化学感受器活性的影响。
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
原发性高血压中循环洋地黄样化合物。
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
DOI: 10.1172/jci107669
发表时间: 1974-01-01
影响因子: 15.9
作者:
HEISTAD, DD;ABBOUD, FM;SCHMID, PG
通讯作者: SCHMID, PG
内源性洋地黄样因子。
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