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  • Title: [Comparative study of spirapril (quadropril) and amlodipine efficacy. Results of randomized trial in patients with mild to moderate arterial hypertension].
    Author: Shal'nova SA, Martsevich SIu, Deev AD, Kutishenko NP, Kukushkin SK, Manoshkina EM, Alimova EV, Semenova IuE, Lebedev AV, Koniakhina IP, Zagrebel'nyĭ AV.
    Journal: Ter Arkh; 2000; 72(10):86-9. PubMed ID: 11220888.
    Abstract:
    AIM: To compare in the non-blind randomised parallel study the efficiency of quadropril and amlodipine in the treatment of mild to moderate arterial hypertension. MATERIAL AND METHODS: A total of 80 patients (57.6 +/- 1.0 years) were included in this study. The patients were randomised in two groups, 40 patients each. Patients of group 1 received monotherapy with quadropril, while those of group 2 were treated with amlodipine. The treatment duration was 8 weeks in both groups. Quadropril was given in a fixed dose of 6 mg once daily. The initial dose of amlodipine was 5 mg/day. In case of insufficient effect the dose was elevated to 10 mg/day. The efficacy was evaluated by changes in blood pressure (BP) measured at rest. Moreover, in 50 randomly chosen patients 24-h monitoring of BP was performed at the start and end of the treatment. RESULTS: In the quadropril group baseline systolic BP reached 158.6 +/- 2.1 mm Hg, diastolic BP--101.8 +/- 0.8 mm Hg, heart rate was 74.3 +/- 1.6 beats/min. In the amlodipine group baseline systolic BP was 159.9 +/- 2.4 mm Hg, diastolic BP--101.8 +/- 1.0 mm Hg, heart rate was 71.3 +/- 1.0 beats/min. Systolic BP decreased at the end of quadropril therapy to 138.5 +/- 2.2 mm Hg, diastolic BP to 88.1 +/- 1.4 mm Hg. No significant change of the heart rate was observed. Under 5 mg of amlodipine systolic BP decreased to 137.9 +/- 2.5 mm Hg and diastolic BP to 87.1 +/- 1.6 mm Hg. Heart rate increased to 73.3 +/- 2.2 beats/min. Under therapy with 10 mg amlodipine systolic BP decreased to 145.9 +/- 3.8 mm Hg, diastolic BP to 89.7 +/- 3.4 mm Hg. Heart rate increased to 77.3 +/- 4.0 beats/min (p < 0.01). The hypotensive effect of quadropril remained stable while the effect of amlodipine decreased by the 8th week of therapy (p < 0.01). Side effects were observed significantly more often in the amlodipine group, then in the quadropril group. The main quadropril side effect was cough. Side effects observed in the amlodipine group were edemas, tachycardia, weakness. CONCLUSION: Both quadropril and amlodipine demonstrated a comparable antihypertensive effect although in 11 of 40 patients in the amlodipine group a dose increase was necessary and tolerability of quadropril was better.
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