Responses to volume expansion and contraction in categorized hypertensive and normotensive man.
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چکیده
منابع مشابه
Responses to volume expansion and contraction in categorized hypertensive and normotensive man.
We examined tbe responses to volume expansion and contraction in normals, essential hypertensives, and patients with secondary hypertension, in order to formulate a more precise method of categorizing essential hypertensives with respect to plasma renin and aldosterone responses. We studied 379 normal and 464 hypertensive patients during and after a 4 hour 2 liter intravenous saline infusion, a...
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SUMMARY Pyrogen, when administered intravenously to normotensive and hypertensive men, produced initially vasoconstriction and subsequently marked renal vasodilatation, both resulting from direct effects on the renal vasculature. The absolute renal plasma flow, both during control observations and at the height of renal hyperemia, was greater in normotensives, but the percentage change was grea...
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Previous studies have reported an exaggerated natriuresis in hypertensive man; however, a systematic appraisal of this response in various forms of hypertension has not been made. We measured fractional excretion of sodium (FENa) during a four hour intravenous infusion of 2 liters normal saline in 162 normal subjects and 120 hypertensives. Of these, 13 had primary aldosteronism (ALDO), 19 high ...
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We studied the blood pressure, natriuretic, kaliuretic and humoral responses of 347 normal subjects after volume expansion and volume contraction to examine possible differences among whites, blacks and subjects of different ages. According to outpatient 24-hour urine collections, blacks excreted less sodium and potassium than whites. After similar states of sodium intake were achieved among al...
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The objective of the present study was to determine whether long-term arterial hypertension renders the microvasculature more vulnerable to the deleterious inflammatory responses elicited by ischemia and reperfusion (I/R). Intravital fluorescence microscopy was used to monitor leukocyte adherence and emigration, platelet-leukocyte aggregation, and albumin extravasation in mesenteric postcapilla...
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ژورنال
عنوان ژورنال: Hypertension
سال: 1979
ISSN: 0194-911X,1524-4563
DOI: 10.1161/01.hyp.1.5.476