Management of resistant hypertension in a multidisciplinary unit of renal denervation: protocol and results

Resistant hypertension is a clinical problem because of its difficult management and increased morbidity and mortality. Catheter-based renal denervation has been demonstrated to improve control in these patients. The results of establishing a multidisciplinary unit for the implementation of renal denervation in the management of resistant hypertension are described.

A team of nephrologists and cardiologists created a protocol for patient selection, intervention, and follow-up. One hundred and ninety-seven patients with poorly controlled essential hypertension, despite taking 3 or more drugs, were included. The ablation technique previously described was supported by a navigator based on rotational angiography. Blood pressure at baseline and after follow-up was compared using the Wilcoxon test for paired samples.

One hundred and eight patients (55%) with pseudo-resistant hypertension were excluded. The other 89 were given antialdosteronic drugs, to which 60 patients (30%) responded. The remaining 29 patients (15%) were candidates for denervation. Eleven patients, with blood pressure 164/99 mmHg and taking 4.4 antihypertensive drugs, were ablated. After 72 days of follow-up, systolic and diastolic blood pressure fell by 25 mmHg (P=.02) and 10 mmHg (P=.06), respectively. In 10 patients (91%) at least 1 drug was discontinued.

Renal denervation performed by a multidisciplinary team led to an improvement in blood pressure similar to previous studies, with a greater reduction of antihypertensive drugs.