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. 2017 Apr;19(4):361-368.
doi: 10.1111/jch.12988. Epub 2017 Mar 7.

Feasibility of catheter ablation renal denervation in "mild" resistant hypertension

Shaojie Chen  1   2   3 , Marcio Galindo Kiuchi  2   4   5 , Willem-Jan Acou  6 , Michael Derndorfer  7 , Jiazhi Wang  8 , Ruotian Li  9 , Georgios Kollias  7 , Martin Martinek  7 , Tetsuaki Kiuchi  10 , Helmut Pürerfellner  7 , Shaowen Liu  11
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Feasibility of catheter ablation renal denervation in "mild" resistant hypertension

Shaojie Chen et al. J Clin Hypertens (Greenwich). 2017 Apr.

Abstract

Renal denervation (RDN) has been proposed as a novel interventional antihypertensive technique. However, existing evidence was mainly from patients with severe resistant hypertension. The authors aimed to evaluate the efficacy of RDN in patients with resistant hypertension with mildly elevated blood pressure (BP). Studies of RDN in patients with mild resistant hypertension (systolic office BP 140-160 mm Hg despite treatment with three antihypertensive drugs including one diuretic, or mean systolic BP by 24-hour ambulatory BP measurement [ABPM] 135-150 mm Hg) were included. Two observational and one randomized cohort were identified (109 patients in the RDN group and 36 patients in the control group). Overall, the mean age of patients was 62±10 years, and 69.7% were male. Before-after comparison showed that RDN significantly reduced ABPM as compared with the baseline systolic ABPM, from 146.3±13 mm Hg at baseline to 134.6±14.7 mm Hg at 6-month follow-up and diastolic ABPM from 80.8±9.4 mm Hg at baseline to 75.5±9.8 mm Hg at 6-month follow up (both P<.001). This significant effect was not observed in the control group. Between-group comparison showed a greater change in ABPM in the RDN group as compared with that in the control group (change in systolic ABPM: -11.7±9.9 mm Hg in RDN vs -3.5±9.6 mm Hg in controls [P<.001]; change in diastolic ABPM: -5.3±6.3 mm Hg in RDN vs -2.1±5.5 mm Hg in control [P=.007]). RDN was also associated with a significantly decreased office systolic/diastolic BP and reduced number of antihypertensive medications. No severe adverse events were found during follow-up. RDN seems feasible to treat patients with mild resistant hypertension.

Keywords: blood pressure; prevention; renal denervation; resistant hypertension.

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Conflict of interest statement

There are no conflicts of interest to declare regarding the content of this study.

Figures

Figure 1
Figure 1
Quantitative pooled comparison of changes in ambulatory blood pressure monitoring (ABPM). CI indicates confidence interval; DBP, diastolic blood pressure; RDN, renal denervation; SBP, systolic blood pressure; SD, standard deviation; Δ, change
Figure 2
Figure 2
Comparison of change in ambulatory blood pressure monitoring (ABPM). DBP indicates diastolic blood pressure; RDN, renal denervation; SBP, systolic blood pressure; Δ, change
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