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- W1994901686 abstract "In hypertensive patients as well as in normal subjects urapidil has a hypotensive action. This is mainly mediated by a peripheral alpha 1-adrenoceptor blockade with a decrease in systemic vascular resistance; in addition, during acute animal experiments a centrally mediated hypotensive action was demonstrated, possibly by 5-hydroxytryptamine1A (5-HT1A)-receptor stimulation. Studies in humans showed an increase in cardiac output, which was not always significant; it did result either from an increased heart rate or an increased stroke volume. Acute changes in pulmonary hemodynamics after administration of urapidil were most pronounced in patients with pulmonary hypertension: pulmonary artery pressure and pulmonary vascular resistance decreased significantly and pulmonary capillary wedge pressure decreased nonsignificantly. A small reduction in pulmonary artery pressure and capillary wedge pressure were seen in patients with congestive heart failure and in patients in whom acute blood pressure elevation developed after coronary bypass surgery. In patients with essential hypertension forearm, renal and splanchnic flow were shown to increase and vascular resistance to decrease significantly after acute intravenous doses of urapidil. The hemodynamic changes during chronic therapy are largely unknown, except for systemic vascular resistance which remains decreased." @default.
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- W1994901686 date "1989-08-01" @default.
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- W1994901686 title "Urapidil-induced hemodynamic changes in humans" @default.
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- W1994901686 doi "https://doi.org/10.1016/0002-9149(89)90690-5" @default.
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