Effect of Renal Impairment on Clinical Outcomes After Mitral Valve Transcatheter Edge-to-Edge Repair

JACC. Asia Pub Date : 2025-02-01 DOI:10.1016/j.jacasi.2024.10.025

Kazuki Tanaka MD , Junichi Yamaguchi MD , Masafumi Yoshikawa MD , Eiji Shibahashi MD , Hisao Otsuki MD , Takanori Kawamoto MD , Chihiro Koyanagi MD , Yusuke Inagaki MD , Tomohito Kogure MD , Masanori Yamamoto MD , Mike Saji MD , Masahiko Asami MD , Masaki Nakashima MD , Yusuke Enta MD , Shinichi Shirai MD , Masaki Izumo MD , Shingo Mizuno MD , Yusuke Watanabe MD , Makoto Amaki MD , Kazuhisa Kodama MD , Kentaro Hayashida MD

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Abstract

Background

Renal impairment is associated with poor clinical outcomes in patients with cardiovascular diseases. Some studies have revealed the impact of renal impairment on the clinical outcomes of patients who underwent mitral valve transcatheter edge-to-edge repair (M-TEER). However, limited data are available regarding the impact of baseline renal impairment after M-TEER in Asian-Pacific patients with heart failure and severe mitral regurgitation.

Objectives

This study sought to examine the effect of renal impairment on clinical outcomes after M-TEER using a large-scale nationwide registry in Japan.

Methods

A total of 2,150 patients enrolled in the OCEAN-Mitral (Optimized Catheter Valvular Intervention) registry were divided into 3 groups according to the estimated glomerular filtration rate (eGFR) before M-TEER: normal eGFR (≥60 mL/min/1.73 m²) (n = 291), renal impairment (<60 mL/min/1.73 m²) (n = 1,746), and dialysis (n = 113). The impact of renal impairment and dialysis on major adverse cardiovascular events (MACE) (a composite of all-cause death and hospitalization for heart failure) was examined.

Results

Kaplan-Meier analysis revealed that the renal impairment and dialysis groups had a significantly higher incidence of MACE (survival rates at 2 years: normal eGFR, 74.2% [95% CI: 66.9%-80.1%] vs renal impairment, 63.9% [95% CI: 61.0%-66.6%] vs dialysis, 50.9% [95% CI: 38.2%-62.2%]; P < 0.001). Multivariate Cox regression analysis identified dialysis as the strongest independent predictor of MACE (HR: 1.95; 95% CI: 1.33-2.85; P < 0.001).

Conclusions

Renal impairment was associated with an increased incidence of major adverse events, and dialysis was the strongest independent predictor of poor clinical outcomes after M-TEER in Asian-Pacific patients.

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来源期刊

JACC. Asia Cardiology and Cardiovascular Medicine

CiteScore

4.00

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0.00%

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