Resistant Hypertension Treated With Extravascular Renal Denervation

Abstract

Resistant hypertension is defined as uncontrolled blood pressure (BP) even with 3 or more antihypertensive drugs. Catheter-based intravascular renal denervation has shown only modest benefits, prompting the development of extravascular renal denervation (eRDN), the HyperQure RDN System. To the best of our knowledge, this is the first reported experience of eRDN performed in 2 patients with severe resistant hypertension. Notable BP reductions were observed in 24-hour ambulatory BP from 140/96 to 104/70 mm Hg (case 1) and from 199/117 to 104/61 mm Hg (case 2) after 3 months. Fewer oral BP medications were then prescribed thereafter. No postoperative complications were also observed. Thus, eRDN may safely and effectively treat patients with resistant hypertension. Additionally, eRDN may offer a promising alternative to intravascular renal denervation, especially in patients with renal arterial variations such as accessories or early branching arteries, for which the intravascular approach is unsuitable.