[Renal and adrenal function following acute administration of urapidil in hypertensive patients with normal and impaired renal function].
The effects of i.v. injection of urapidil (Ebrantil) (25 mg) on arterial blood pressure, renal function and renin-aldosterone system were studied in a group of patients with hypertension and normal renal function, in patients with hypertension and chronic renal failure and in normotensive controls. The pharmacokinetics of urapidil were evaluated simultaneously by measuring blood levels of the compound and its main metabolite. In the controls and in patients with hypertension, systolic and diastolic blood pressure were lowered few minutes after injection. Minimal blood pressure values were reached after 15-20 min. Hypotensive action was more pronounced in hypertensive patients as compared to controls. In contrast, increment in heart rate was greater in the controls. Despite the fall in blood pressure, renal plasma flow and glomerular filtration rate remained unchanged. Following the injection of urapidil, plasma renin activity increased with no change in plasma aldosterone levels. Plasma half-life of urapidil averaged 1.96 +/- 0.17 h in controls, 3.31 +/- 0.75 h in patients with hypertension and normal renal function and 2.52 +/- 0.46 h in patients with hypertension and chronic renal failure. Urapidil effectively lowers arterial blood pressure in patients with normal and impaired renal function with no deterioration in renal function.
Wambach
G
G
Medizinischen Universitätsklinik II, Universität Köln.
Godehardt
E
E
Lang
R
R
Haerlin
R
R
Meurer
K A
KA
D000311:Adrenal Glands / Q000187:drug effects*; D000328:Adult; D000959:Antihypertensive Agents / Q000009:adverse effects* / Q000627:therapeutic use; D001794:Blood Pressure / Q000187:drug effects; D005260:Female; D006339:Heart Rate / Q000187:drug effects; D006801:Humans; D006973:Hypertension / Q000150:complications* / Q000188:drug therapy; D007668:Kidney / Q000187:drug effects*; D007674:Kidney Diseases / Q000150:complications*; D007677:Kidney Function Tests; D008297:Male; D008875:Middle Aged; D010879:Piperazines / Q000009:adverse effects* / Q000627:therapeutic use; D012084:Renin-Angiotensin System / Q000187:drug effects
D000959:Antihypertensive Agents; D010879:Piperazines; C015568:urapidil
Nieren- und Nebennierenfunktion nach akuter Gabe von Urapidil bei hypertensiven Patienten mit normaler und eingeschränkter Nierenfunktion.