Aim. To investigate the effects of intravenous blood laser radiation (IBLR) on microcirculation (MC) in patients with arterial hypertension (AH).Material and methods. The study included 120 patients (mean age 53,4±1,3 years) with Stage I-II AH. All participants were divided into two groups: the main group (MG) received pharmaceutical therapy plus IBLR, the control group (CG) was administered pharmaceutical therapy only. MC was assessed by laser Doppler flowmetry (LDF) method with LAKK-02 device.Results. AH patients demonstrated heterogeneity of hemodynamic MC types (HMCT), with higher prevalence of pathological types: congestive-static, spastic and hyperemic HMCT. IBLR addition to complex AH treatment was associated with significant MC improvement, regardless of the initial HMCT — mostly due to reduced spasm of afferent vessels.Conclusion. Comparing the MG and CG results, it could be assumed that IBLR is an effective method for MC correction in AH patients. These MC disturbances are linked to AH progression and high blood pressure stabilization
