JACC:TAVR后新发持续性左束支阻滞患者的长期预后

2019-06-30 xiangting MedSci原创

TAVR术后中位随访3年,NOP-LBBB与死亡率或心衰再住院率较高无关。然而,NOP-LBBB增加了永久起搏器植入的风险,并且随时间推移对左心室功能有不良影响。

这项研究目的是确定新发持续性(NOP)左束支传导阻滞(LBBB)对经导管主动脉瓣置换术(TAVR)后长期结局(>2年)的影响。

TAVR后NOP-LBBB的影响仍存在争议,并且目前没有关于长期预后的数据。

纳入1,020例接受TAVR治疗并且术前无LBBB或永久起搏器植入(PPI)的连续性患者。NOP-LBBB定义为TAVR后出现,并在出院时持续存在的任何新发LBBB。在TAVR后中位数3年(四分位间距:2至5年)获取随访临床和超声心动图数据。

212名患者(20.1%)在TAVR后出现NOP-LBBB。除了NOP-LBBB组使用自扩张CoreValve系统更多以外(p<0.001),NOP-LBBB组与无NOP-LBBB组间没有差异。随访时,NOP-LBBB组与无NOP-LBBB组的全因死亡率(45.3%vs 42.5%;校正风险比[HR]:1.09; 95%置信区间[CI]:0.82至1.47; p=0.54)、心血管死亡率(14.2%vs 14.4%;校正HR:1.02; 95%CI:0.56至1.87; p=0.95)、或心衰再住院率没有差异(19.8%vs 15.6%;校正HR :1.44; 95%CI:0.85至2.46; p=0.18)。NOP-LBBB与随访时永久起搏器植入的风险升高相关(15.5%vs 5.4%;校正HR:2.45; 95%CI:1.37至4.38; p=0.002),前12个月内的风险最高。无NOP-LBBB患者的左心室射血分数随着时间而升高,但NOP-LBBB患者的左心室射血分数略有下降(组间左心室射血分数变化p<0.001)。

TAVR术后中位随访3年,NOP-LBBB与死亡率或心衰再住院率较高无关。然而,NOP-LBBB增加了永久起搏器植入的风险,并且随时间推移对左心室功能有不良影响。这些结果提示将来应努力改善TAVR后NOP-LBBB患者的治疗。

原始出处:
Chekrallah Chamandi. Long-Term Outcomes in Patients With New-Onset Persistent Left Bundle Branch Block Following TAVR. JACC:Cardiovascular Interventions. 24 June 2019.

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    2019-12-18 hbwxf
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