Abstract
Background
Renal denervation (RDN), a novel therapy for resistant hypertension, has been shown to have an effect on cardiac remodeling in several small studies. We aimed to pool currently available data to assess the effects of RDN on left ventricular hypertrophy (LVH) and left atrial (LA) enlargement.
Methods and results
Two investigators independently searched PubMed, EMBASE and Cochrane Library Central Register of Controlled Trials database for studies reporting change in left ventricular mass index (LVMI) or LA size before and after RDN. Twelve publications met our pre-defined inclusion criteria. Echocardiographic data showed that RDN markedly reduced both LVMI [weighted mean difference (WMD) = −15.77 g/m2; 95 % confidence interval (CI) −22.51 to −9.02 g/m2] and LA diameter [WMD = −2.48 mm; 95 % CI −4.12 to −0.83 mm] after 6 months. Data from cardiac magnetic resonance also showed a significant reduction in LVMI [WMD = −5.43 g/m2, 95 % CI −10.01 to −0.35 g/m2) at 6 months. Changes in LVH and LA size at 12 months were more pronounced than those at 6 months. Meta-regression analysis failed to demonstrate a significant relationship between RDN-induced LVMI reduction and BP lowering at 6 months.
Conclusions
RDN led to significant regressions of both LVH and LA enlargement at 6 months, which were sustained at least up to 12 months.
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Supplementary Table 1
Study population and quality assessment of included studies (DOCX 19 kb)
Supplementary Table 2
Changes in systolic blood pressure at different follow-up intervals. delta1 = absolute change in SBP from baseline; delta2 = percentage change in SBP from baseline; FU (m) = follow-up (months); ABPM = ambulatory BP monitoring (DOCX 16 kb)
Supplementary Figure 1
Forest plot demonstrating changes in LVM indexed to height 2.7 following renal denervation at 6 months (TIFF 1766 kb)
Supplementary Figure 2
Forest plot demonstrating changes in LVM indexed to height 1.7 following renal denervation at 6 months (TIFF 1802 kb)
Supplementary Figure 3
Meta-regression between standard mean difference of LVMI change and absolute (A) or percentage (B) change in systolic blood pressure at 6 months (TIFF 1208 kb)
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Lu, D., Wang, K., Liu, Q. et al. Reductions of left ventricular mass and atrial size following renal denervation: a meta-analysis. Clin Res Cardiol 105, 648–656 (2016). https://doi.org/10.1007/s00392-016-0964-2
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DOI: https://doi.org/10.1007/s00392-016-0964-2