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Mitral Transcatheter Edge-to-Edge Repair for Secondary Mitral Regurgitation With Preserved Left Ventricular Function.
JACC: Cardiovascular Interventions ( IF 11.7 ) Pub Date : 2024-11-11 , DOI: 10.1016/j.jcin.2024.08.031
Chetan P Huded,Adnan K Chhatriwalla,Miloni A Shah,Sreekanth Vemulapalli,Andrzej Kosinski,David J Cohen

BACKGROUND Outcomes of mitral transcatheter edge-to-edge repair (MTEER) in patients with secondary mitral regurgitation (sMR) and preserved left ventricular ejection fraction (LVEF) are uncertain. OBJECTIVES This study sought to describe outcomes of MTEER for sMR with preserved LVEF. METHODS Using the STS/ACC TVT (Society of Thoracic Surgeons-American College of Cardiology Transcatheter Valve Therapy) Registry, we evaluated the risk-adjusted outcomes of MTEER for sMR with LVEF >50% by the severity of residual mitral regurgitation (MR), and we compared these outcomes to patients undergoing MTEER for sMR with LVEF of 20% to 50%. RESULTS Among 12,083 patients, LVEF was >50% in 3,011 (24.9%) and 20% to 50% in 9,072 (75.1%). Technical success, in-hospital complications, the 1-year death rate, and the 1-year Kansas City Cardiomyopathy Questionnaire score were similar in patients with LVEF >50% vs LVEF of 20% to 50%. The 1-year adjusted risk of heart failure hospitalization was lower in patients with LVEF >50% vs LVEF of 20% to 50% (adjusted HR: 0.81; 95% CI: 0.68-0.97; P = 0.02). Among patients with LVEF >50%, residual MR was ≤ mild in 76.0% and moderate in 19.0%. Compared with ≤ mild MR, moderate residual MR was associated with increased 1-year risks of death (adjusted HR: 1.46; 95% CI: 1.01-2.10; P = 0.04) and heart failure hospitalization (adjusted HR: 1.82; 95% CI: 1.32-2.52; P < 0.001). At 1 year, the KCCQ score improved in patients with LVEF >50% treated with MTEER (residual MR grade ≤ mild, 28.7 ± 26.8; moderate MR, 25.7 ± 27.2; > moderate MR, 21.6 ± 12.0; all P < 0.05). CONCLUSIONS In patients with sMR and preserved LVEF, MTEER was associated with a high rate of technical success, a low rate of complications, and large improvements in health status.

中文翻译:


二尖瓣经导管边对边修复治疗左心室功能保留的继发性二尖瓣反流。



背景 二尖瓣经导管边缘到边缘修复术 (MTEER) 在继发性二尖瓣反流 (sMR) 和保留左心室射血分数 (LVEF) 患者中的结局尚不确定。目的 本研究试图描述 MTEER 治疗 LVEF 保留的 sMR 的结局。方法 使用 STS/ACC TVT (Society of Thoracic Surgeons-American College of Cardiology 经导管瓣膜治疗) 注册库,我们根据残余二尖瓣反流 (MR) 的严重程度评估了 MTEER 对 LVEF >50% 的 sMR 的风险调整结局,并将这些结局与接受 MTEER 治疗 LVEF 为 20% 至 50% 的 sMR 患者进行了比较。结果 在 12,083 例患者中,3,011 例 (24.9%) 的 LVEF 为 >50%,9,072 例 (75.1%) 的 LVEF 为 20% 至 50%。LVEF >50% 与 LVEF 为 20%-50% 的患者的技术成功、院内并发症、1 年死亡率和 1 年堪萨斯城心肌病问卷评分相似。LVEF >50% 患者的 1 年调整后心力衰竭住院风险低于 20% 至 50% 的患者(调整后的 HR:0.81;95% CI:0.68-0.97;P = 0.02)。在 LVEF >50% 的患者中,残余 MR ≤轻度占 76.0%,中度占 19.0%。与轻度 MR 相比≤中度残留 MR 与 1 年死亡风险增加相关 (校正 HR: 1.46;95% CI: 1.01-2.10;P = 0.04)和心力衰竭住院 (调整 HR: 1.82;95% CI: 1.32-2.52;P < 0.001)。1 年时,接受 MTEER 治疗的 LVEF >50% 患者的 KCCQ 评分有所改善(残余 MR 分级≤轻度,28.7 ± 26.8;中度 MR,25.7 ± 27.2;> 中度 MR,21.6 ± 12.0;均 P < 0.05)。结论 在 sMR 和 LVEF 保留患者中,MTEER 与高技术成功率、低并发症发生率和健康状况大幅改善相关。
更新日期:2024-11-11
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