Effects of Ouabain on Myocardial Potassium and Sodium Balance in Man
作者:
F. Brennan,
John Mccans,
Miguel Chiong,
John Parker,
期刊:
Circulation
(OVID Available online 1972)
卷期:
Volume 45,
issue 1
页码: 107-113
ISSN:0009-7322
年代: 1972
出版商: OVID
关键词: Cardiac glycosides;Hemodynamics
数据来源: OVID
摘要:
Myocardial electrolyte balance and hemodynamics were studied in 14 patients before and after the administration of ouabain. The drug caused a significant loss of potassium from the myocardium. This was accompanied by a significant positive inotropic response, indicated by an increase in the rate of rise of left ventricular pressure and systolic ejection-rate index. Heart rate, cardiac output, left ventricular end-diastolic pressure, brachial artery pressure, and left ventricular stroke-work index remained unchanged. These observations in man are compatible with those theories of digitalis action which associate inotropic effect with the inhibition of membrane sodium- and potassium-activated adenosine triphosphatase.
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