Practical Geriatrics ›› 2024, Vol. 38 ›› Issue (5): 500-437.doi: 10.3969/j.issn.1003-9198.2024.05.016

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Risk factors and prognosis of new continuous complete left bundle branch block in elderly patients undergoing transcatheter aortic valve replacement

DU Zhaona, JIANG Wenbo, MOU Junyu, YU Chengyun, XIA Wei   

  1. School of Clinical Medicine, Shandong Second Medical University, Weifang 261053, China (DU Zhaona, YU Chengyun);
    Department of Neurosurgery (JIANG Wenbo);
    Department of Cardiology (MOU Junyu, XIA Wei), Qinigdao Hospital, University of Health and Rehabilitation Sciences (Qingdao Municipal Hospital), Qingdao 266071, China
  • Received:2023-07-19 Online:2024-05-20 Published:2024-05-23
  • Contact: XIA Wei, Email:summer0419163@163.com

Abstract: Objective To analyze the risk factors associated with new-onset persistent complete left bundle branch block (cLBBB) in the elderly patients with aortic stenosis undergoing transcatheter aortic valve replacement (TAVR) and the impact of cLBBB on short-term prognosis. Methods The clinical data of 78 elderly patients who underwent TAVR via femoral artery at the Heart Center of Qingdao Municipal Hospital from January 2019 to August 2022 were retrospectively analyzed, and the patients were divided into the new-onset persistent cLBBB group (n=26 ) and the non-LBBB group (n=52) according to whether cLBBB occurred after TAVR during the hospitalization. The baseline data, the levels of biochemical indexes, CT and cardiac ultrasonography imaging, valve-related and surgery-related data and the prognosis during 6 months of follow-up were compared between the two groups. A multiple Logistic regression model was used to analyze the risk factors of new-onset persistent cLBBB after TAVR. Results Of the 78 patients, 26 patients (33.3%) presented with persistent cLBBB after TAVR. Logistic regression analysis showed that preoperative presence of incomplete LBBB (OR=7.609,95%CI:1.051-55.066), oversize rate of implanted valve ≥17.25% (OR=1.096,95%CI:1.017-1.181) and valve implantation depth≥4.96 mm at sinus-free side (OR=3.633,95%CI:1.363-9.686) were the independent risk factors for new-onset persistent cLBBB after TAVR. During 6 months of follow-up, the new persistent cLBBB group had a higher rate of heart failure rehospitalization (16.0% vs 1.9%, P=0.02) compared to the non-LBBB group. Conclusions Preoperative incomplete LBBB, implantation of large-size valves and deep implantation of coronary sinusless lateral valves are the risk factors of persistent cLBBB after TAVR, and the patients with new-onset cLBBB have a higher risk of rehospitalization due to heart failure.

Key words: transcatheter aortic valve replacement, left bundle branch block, influencing factors, prognosis

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