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Open Access Main Renal Artery Plus Branch Ablation in the Treatment of Resistant Hypertension with Renal Denervation

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Objective: To study the safety and efficacy of denervation of renal artery branches in the treatment of resistant hypertension. Methods: Sixty patients with resistant hypertension were enrolled. The patients were randomly assigned to the main renal artery plus branch ablation group or the main renal artery ablation group. The clinical data and operation-related parameters, including number of ablation points, temperature, and average energy, were recorded. Ambulatory blood pressure were taken for all patients at the baseline and at 6 months after treatment. Office blood pressure was recorded before treatment and after treatment every 3 months for 2 years. Results: Sixty patients with resistant hypertension were enrolled in this study. There were 30 patients in each group. Angiography was performed after ablation. No renal artery complications, such as stenosis and dissection, occurred in the two groups. There was no significant difference in age, sex, BMI, comorbid disease, and medication between the two groups (P > 0.05). The number of ablation points for the main renal artery plus branch ablation group was greater than that for the main renal artery ablation group. The office blood pressure and 24-hour blood pressure were significantly lower 6 months after treatment than before treatment in both groups (P < 0.05). Office blood pressure in the main renal artery plus branch ablation group was lower than that in the main renal artery ablation group during the 3–12-month follow-up period, with a statistical difference. However, as the follow-up time increased, the difference disappeared. Conclusion: The results of this study show that main renal artery plus branch ablation is a safe interventional method, but there was no obvious advantage on long-term follow-up compared with only main renal artery ablation.
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Keywords: Renal denervation; resistant hypertension; percutaneous renal artery sympathetic nerve ablation

Affiliations: Shanghai University of Traditional Chinese Medicine, Shanghai, People’s Republic of China

Appeared or available online: October 1, 2021

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