Comparative evaluation of the efficacy of nicorandil and metoprolol in patients with microvascular angina

Aims: to evaluate the antianginal and hemodynamic efficacy of nicorandil and metoprolol therapy in patients with microvascular angina. Materials and methods: a comparative prospective study of the efficacy and safety of nicorandil and metoprolol in microvascular angina was carried out with the participation of 132 patients, randomly divided into two comparison groups. Patients in group 1 (n = 55) received nicorandil (daily dose 20 mg), in group 2 patients (n = 77) received metoprolol (25 or 50 mg / day). The groups did not have statistically significant differences in terms of clinical and demographic indicators. Results: A positive hemodynamic effect was noted in both groups, a significant decrease in heart rate (5.3±4.5 beats / min, p = 0.036) and systolic blood pressure in group 2 (Δ10.1±4.2 mm Hg, p = 0.04), diastolic blood pressure in group 1 ΔDBP 5.1±0.9 mm Hg, p = 0.047). Comparable antianginal efficacy in both groups (14.5% and 10.4%, p>0.05), therapy safety (29.1 % of cases of adverse events in group 1 and 24.7% in 2, p = 0.83) against the background of a sufficiently high adherence (according to the MMAS-8 scale, 7.2±0.9 points in group 1, 7.1±0.9 in group 2, p = 0.64). Conclusions: analysis of the clinical efficacy and safety of nicoran