- •A total 11 studies with 313 patients with heart failure with reduced ejection fraction were included.
- •Renal denervation can increase left ventricular ejection fraction and 6-min walk distance.
- •Renal denervation can improve cardiac structure in people with heart failure.
- •Renal denervation seemed to be a safe treatment for heart failure.
- •This improvement after renal denervation was significant in Asian populations.
Some, but not all, recent studies have shown that renal denervation (RDN) can improve cardiac function and exercise tolerance in people who have heart failure with reduced ejection fraction (HFrEF). This study assessed the efficacy and safety of RDN as a treatment for HFrEF.
The Medline, Cochrane Library, Embase, and PubMed databases were searched through to September 28, 2022 for clinical studies that evaluated the effect of RDN on HFrEF. The primary endpoints were changes in left ventricular ejection fraction (LVEF) and 6-min walk distance (6MWD). Secondary endpoints were changes in echocardiographic parameters, including left ventricular end-diastolic and end-systolic diameters, left atrial diameter, and interventricular septal thickness. N-terminal pro-B-type natriuretic peptide (NT-proBNP) levels, New York Heart Association (NYHA) class, heart rate, and systolic and diastolic blood pressure were also evaluated. Major adverse events were defined as death and rehospitalization for heart failure during follow-up. The estimated glomerular filtration rate (eGFR) and serum creatinine level were extracted as measures of renal function.
Eleven trials comprising 313 patients were eligible for quantitative analysis. Pooled analyses showed a mean increase in LVEF of 4.25 % (95 % CI 1.77–6.72; p < 0.001, I2 = 69 %) and an increase in 6MWD (mean difference 50.28 m, 95 % CI 8.78–91.78; p = 0.02; I2 = 81 %) after RDN. Left ventricular end-diastolic and end-systolic diameters, left atrial diameter, and interventricular septal thickness also improved after RDN. NT-proBNP, NYHA class, and heart rate were significantly decreased after RDN. There were no significant changes in blood pressure after RDN. Mortality and HF-related hospitalization rates were relatively low. There was no significant change in eGFR or creatinine after RDN.
Our findings suggest that RDN can effectively increase LVEF and 6MWD in patients with HFrEF but require confirmation in studies with larger sample sizes and longer follow-up durations.
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Published online: February 11, 2023
Accepted: January 2, 2023
Received in revised form: December 13, 2022
Received: November 1, 2022
Publication stageIn Press Corrected Proof
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