Spirapril in chronic renal failure.

In a single-blind trial with a 2-week placebo run-in phase and a 4-week active-treatment period, spirapril at 6 mg once daily was administered to 49 consecutive hypertensive patients (34 men and 15 women). All had pretreatment diastolic blood pressures (DBP) of 95-115 mmHg and varying degrees of renal impairment. At the end of the placebo run-in and at the end of active treatment, renal function was assessed using the following procedures: technetium 99m-DTPA clearance [for glomerular filtration rate (GFR)]; radioiodine (131I)-labelled sodium iodohippurate (Hippuran) clearance [for renal plasma flow (RPF)]; creatinine clearance (Clcr). No statistically significant differences were found in GFR or Clcr during spirapril treatment. In renally impaired patients, RPF remained virtually unchanged whereas, in patients with normal Clcr, there was an increase of around 10% during active treatment. At the end of the study, 48% of the patients with renal failure achieved normalization of DBP (< or = 90 mmHg) and/or a DBP reduction of > or = 10 mmHg; the corresponding rate for patients with normal renal function was 31%. In conclusion, in patients with mild-to-moderate essential hypertension and varying degrees of renal impairment, spirapril at 6 mg once daily is an efficacious and well tolerated antihypertensive therapy.

RCT Entities:   Population Interventions Outcomes