The Transcatheter Aortic Valve Replacement-Conduction Study: The Value of the His-Ventricular Interval in Risk Stratification for Post-TAVR Atrioventricular-Block
Recommended Citation
Raad M, Greenberg J, Altawil M, Lee J, Wang DD, Oudeif A, Birchak J, Abdelrahim E, Makki T, Mohammed M, Chehab O, Ignatius A, Singh G, Maskoun W, O'Neill B, Lahiri M, Eng M, Villablanca P, Wyman JF, Khan A, Epstein AE, O'Neill W, Schuger C, and Frisoli TM. The Transcatheter Aortic Valve Replacement-Conduction Study: The Value of the His-Ventricular Interval in Risk Stratification for Post-TAVR Atrioventricular-Block. Structural Heart 2024.
Document Type
Article
Publication Date
9-1-2024
Publication Title
Struct Heart
Abstract
BACKGROUND: There is no clear consensus regarding the optimal risk stratification of high-degree atrioventricular block (HDAVB) after transcatheter aortic valve replacement (TAVR).
METHODS: This prospective study sought to determine the utility of the pre- and post-TAVR His-ventricular (HV) interval in the risk stratification of post-TAVR HDAVB. One hundred twenty-one patients underwent an electrophysiology study before and after TAVR. The primary outcome was HDAVB requiring pacemaker implantation within 30 days post-TAVR. A separate retrospective cohort was analyzed to determine the postoperative interval at which the risk of HDAVB is reduced to <5%.
RESULTS: HDAVB occurred in 12 (10%) patients. Baseline right bundle branch block (RBBB) (odds ratio [OR]: 13.6), implant depth >4 mm (OR: 3.9), use of mechanically- or self-expanding valves (OR: 6.3), and post-TAVR HV > 65 ms (OR: 4.9) were associated with increased risk of HDAVB, whereas PR intervals and pre-TAVR HV were not. In patients without baseline RBBB or new persistent left bundle branch block (LBBB), not one patient with post-TAVR HV < 65 ms developed HDAVB. In the separate retrospective cohort (N = 1049), the risk of HDAVB is reduced (<5%) on postoperative days 4 and 3 in patients with pre-TAVR RBBB and post-TAVR persistent LBBB, respectively.
CONCLUSIONS: Baseline RBBB, new persistent LBBB, implant depth >4 mm, and a post-TAVR HV ≥ 65 ms were associated with a higher risk of post-TAVR HDAVB, whereas an HV ≤ 65 ms was associated with a lower risk. The pre-TAVR HV was not associated with our outcome, and the delta HV did not have practical incremental prognostic value. Among those without pre-TAVR RBBB or post-TAVR persistent LBBB, no patients with post-TAVR HV < 65 ms developed HDAVB.
PubMed ID
39290679
ePublication
ePub ahead of print
Volume
8
Issue
5
First Page
100296
Last Page
100296
