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  • Title: Left ventricular mass reduction and hypertrophy regression following renal artery revascularization: a meta-analysis.
    Author: Cuspidi C, Tadic M, Sala C, Quarti-Trevano F, Gherbesi E, Mancia G, Grassi G.
    Journal: J Hypertens; 2021 Jan; 39(1):4-11. PubMed ID: 32833917.
    Abstract:
    AIM: Few echocardiographic studies have focused on regression of left ventricular hypertrophy (LVH) in patients with renal artery stenosis after revascularization, with inconsistent results. We performed a systematic meta-analysis of these studies in order to offer a comprehensive information on this topic. METHODS: The PubMed, OVID-MEDLINE, and Cochrane library databases were analyzed to search English-language articles published from 1 January 1990 up to 31 March 2020. Studies were identified by crossing the following terms: 'renal artery stenosis', 'renovascular hypertension', 'fibromuscular dysplasia', 'renal artery stenting', 'renal artery surgery' with 'cardiac damage', 'hypertensive heart disease' 'left ventricular mass', 'left ventricular hypertrophy', 'echocardiography'. RESULTS: A total of 726 hypertensive patients with renal artery stenosis (mean age 61 years, 64% men, 98% treated, 10% with fibromuscular dysplasia) were included in 13 studies. Baseline and postintervention pooled mean LVM values were 220 ± 15 and 203 ± 19 g, respectively (SMD -0.24 ± 0.06, CI -0.37 to -0.21, P<0.0001); corresponding values for LV mass index were 129.0 ± 6 and 115 ± 7 g/m, respectively (SMD -0.28 ± 0.04, CI -0.36 to 0.21, P < 0.0001). Renal revascularization was associated with a 40% lower risk of LVH. This trend was accompanied by a reduction in the number of antihypertensive drugs (SMD -0.27 ± 0.04, CI -0.37 to 0.17, P < 0.0001). CONCLUSION: The present meta-analysis suggests that renal artery revascularization added to antihypertensive therapy promotes a favourable effect on LV structure, as reflected by a significant decrease in absolute and indexed LV mass index as well by a lower risk of LVH. Limitations include: high prevalence of modest renal artery stenosis (≥50%); small sample of fibromuscular dysplasia; lack of randomized design of most studies.
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