To determine whether the elevated plasma renin activity in some cases of mild essential
hypertension expresses sympathetic-nervous-system overactivity, we compared indexes of …

The possibility was explored that in hypertension, sympathetic nervous activity and renin-
angiotensin status may be linked, especially in those subgroups of hypertensive patients …

Study of general hæmodynamics in 15 patients with low-renin essential hypertension
showed hæmodynamic and pathophysiological heterogeneity. However, there was …

The relation of renin-angiotensin status to general hemodynamics and to neurogenic
vascular resistance was studied in patients with borderline hypertension. Plasma renin …

Possible mechanisms causing suppressed plasma renin activity (PRA) in about 25% of
patients with essential hypertension are examined. Seven patients with normally responsive …

When patients with essential hypertension are classified into three major subgroups
according to their plasma renin levels, they appear to exhibit different physiologic and …

1. Some of the haemodynamic abnormalities in mild (borderline) human hypertension
appear to be neurogenic, since they can be completely abolished by pharmacological …

Plasma renin activity and aldosterone secretion rates were measured in 100 patients with
essential hypertension in response to a low sodium diet and upright posture. Plasma renin …

To investigate the roles of angiotensin II and sodium in essential high-renin, normal-renin
and low-renin hypertension, 14 patients received the competitive antagonist of angiotensin …

To block renin activity, a nonapeptide converting-enzyme inhibitor was given to 65 seated
hypertensive patients. Depressor responses occurred only when control plasma renin …