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- W2056518269 abstract "1. The pharmacokinetics, bioavailability, metabolism and antihypertensive effects of nitrendipine have been studied in 12 patients with impaired renal function and moderate to severe hypertension. The drug was administered simultaneously by the i.v. [13C4] and oral (commercial tablet 20 mg) routes. 2. No differences in the pharmacokinetic parameters were observed between the two routes of administration. The systemic clearance after i.v. administration in patients with renal impairment (18.2 +/- 6.1 ml min-1 kg-1) was similar to that observed in healthy volunteers. Despite complete absorption of drug from the tablet the bioavailability of the parent compound was 21.2 +/- 12.5%. Cumulative urinary excretion of nitrendipine metabolites was correlated with the creatinine clearance (r = 0.946). 3. Significant reductions in mean arterial blood pressure (mean: 23.6%) at the end of the nitrendipine infusion and after oral administration of 20 mg (mean: 17.5%) were observed. The blood pressure lowering effect of nitrendipine could be correlated within individuals with serum nitrendipine concentrations using a log linear model. 4. Following 4 weeks of therapy an average dose of 77 mg nitrendipine day-1 was required to achieve a systolic blood pressure below 160 mm Hg or a diastolic blood pressure below 90 mm Hg. The reduction in blood pressure during multiple dosing was related to the nitrendipine steady-state concentration. There was a significant relationship between the nitrendipine bioavailability and the dose required for sufficient blood pressure control. 5. No accumulation of nitrendipine caused by impaired renal function was observed during multiple dosing. Thus, no reduction of the nitrendipine dose in patients with renal impairment is necessary." @default.
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- W2056518269 date "1991-03-01" @default.
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- W2056518269 title "Pharmacokinetics, bioavailability, metabolism and acute and chronic antihypertensive effects of nitrendipine in patients with chronic renal failure and moderate to severe hypertension." @default.
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- W2056518269 doi "https://doi.org/10.1111/j.1365-2125.1991.tb05535.x" @default.
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