The DENER-HTN study is a, multicenter, prospective, open, randomized, controlled study of the effectiveness and costs of renal denervation in addition to standardized medical treatment compared to medical treatment alone in subjects with resistant hypertension. Bilateral renal denervation will be performed using the Symplicity Catheter - a percutaneous system that delivers radiofrequency (RF) energy through the luminal surface of the renal artery.