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Hyperactivity of the sympathetic nervous system is one of the basic mechanisms in the development of arterial hypertension (AH). Transcatheter renal artery denervation is aimed to destroy the renal sympathetic afferent and efferent nerves to achieve a sustained reduction in blood pressure. Since 2017, all II generation studies have demonstrated that sympathetic denervation provides clinically significant BP reduction. Russian Medical Society for Arterial Hypertension (RMSAH) experts consider SD as a possible addition to the antihypertensive strategy in patients with uncontrolled AH and recommend denervation of the renal arteries in registers and clinical trials. On the basis of existing randomized clinical trials, as well as the experience of radiofrequency denervation in Russia, the experts of RMSAH present a consensus and view of the current situation in the field of renal denervation.

Aim. To determine the prevalence of refractory hypertension (RfH) in patients with and without type 2 diabetes mellitus (DM), as well as to evaluate whether diabetic patients with RfH significant differ from those with uncontrolled resistant hypertension (RH) in clinical phenotype, metabolic profile and endothelial function. Materials and methods. The study included 193 patients with RH: RH 74 patients with diabetes and 119 patients without DM. Uncontrolled RH and RfH were defined by the presence of uncontrolled blood pressure BP (140 and/or 90 mm Hg) despite the use of 3 but 5 antihypertensive drugs (for RH) and 5 antihypertensive drugs, including a mineralocorticoid receptor antagonist (for RfH). Clinical examination, lab tests were performed. Flow-mediated dilation (FMD) and vasoreactivity of middle cerebral artery (MCA) using both breath-holding and hyperventilation test were measured by high-resolution ultrasound. Results. The prevalence of refractory hypertension in patients with and without DM was similar (30% vs 28%, respectively). No differences in BP levels, data of echocardiography and clinical phenotype were found between the diabetic groups, but value of HOMA index, plasma resistin level and postprandial glycaemia were higher in patients with RfH. FMD and MCA reactivity to the breath-holding test were worse in patients with RfH, and they had a more pronounced vasoconstrictor response of MCA to the hyperventilation test compared to patients with RH. Conclusion. The prevalence of RfH is the same in patients with and without diabetes. Diabetic patients with refractory hypertension have a more unfavorable metabolic profile and greater impairment of endothelial function than patients with uncontrolled resistant hypertension.