The place of diltiazem in the treatment of patients with stable angina in concomitant bronchial asthma

Abstract

Introduction. In the treatment of stable angina in patients with concomitant bronchial asthma (BA), the bronchopulmonary system may be adversely affected by a number of drugs. Diltiazem may be the drug of choice when antianginal therapy with a pulseslowing effect is required, but β-blockers are contraindicated.Aim of the study. To compare the antianginal, pulse-slowing and vasoprotective effects of the calcium antagonist (CA) diltiazem, the calcium antagonist verapamil and the cardioselective beta-adrenoblocker (BAB) bisoprolol in the treatment of stable angina (SA) patients with concomitant BA.Materials and methods. The study included 60 patients with stable angina II-III FC with concomitant mild or moderate persistent BA. The patients were divided into three groups of 20 patients depending on antianginal drugs: Group 1 received betaadrenoblocker bisoprolol, Group 2 – calcium antagonist verapamil, Group 3 – calcium antagonist diltiazem. All patients underwent cardiography (Doppler EchoCG), external respiration function (ERF), endothelium-dependent vasodilation (EDVD) study at baseline and after 2, 4, 6 weeks of treatment.Results. No negative dynamics of FEV1 was found in patients of all groups during the study of ERF after 6 weeks of treatment. There was a statistically significant increase in FEV1 after 6 weeks of treatment in group 3 patients receiving diltiazem (p = 0.032). There was a statistically significant decrease in HR in all three groups during treatment, but in group 2 the dynamics were significantly lower when treated with verapamil. Analysis of mPAP of patients showed that it decreased in all groups after 6 weeks of treatment, but significant dynamics was noted only in Group 3. EDVD test after 6 weeks of treatment revealed positive dynamics, with a statistically significant increase in the index registered in patients of groups 1 and 3.Conclusions. In treatment of patients with stable angina with mild and intermediate persistent disease without exacerbation, antianginal therapy with the calcium antagonist diltiazem has marked antianginal, pulse-slowing action, has vasoprotective effect on the small and large circulatory vessels, improves the parameters of bronchial permeability.