Lower Incidence of New-onset Severe Conduction Disturbances After Transcatheter Aortic Valve Implantation with Bicuspid Aortic Valve in Patients with No Baseline Conduction Abnormality: a Cross-sectional Investigation in a Single Center in China

Overview

Journal Front Cardiovasc Med

Specialty Cardiology & Vascular Diseases

Date 2023 Jul 13

PMID 37441707

Authors

Yuehuan Li

Ruobing Lei

Jiawei Zhou

JianGang Wang

Haibo Zhang

Affiliations

Soon will be listed here.

Abstract

Background: With technological advancements, the incidence of most transcatheter aortic valve implantation (TAVI)-related complications, with the exception of conduction disturbances, has decreased. Bicuspid aortic valve (BAV) is also no longer considered a contraindication to TAVI; however, the effect of BAV on postoperative conduction disturbances after TAVI is unknown.

Methods: We collected information on patients who met the indications for TAVI and successfully underwent TAVI at our center between January 2018 and January 2021. Patients with preoperative pacemaker implantation status or conduction disturbances (atrioventricular block, bundle branch block, and intraventricular block) were excluded. Based on imaging data, the patients were categorized into the BAV group and the tricuspid aortic valve (TAV) group. The incidence of new perioperative conduction disturbances was compared between the two groups.

Results: A total of 187 patients were included in this study, 64 (34.2%) of whom had BAV. The incidence of third-degree block in the BAV group was 1.6%, which was lower than that (13.0%) in the TAV group ( < 0.05). Multivariate logistic regression results showed that the risk of third-degree conduction disturbances was 15-fold smaller in the BAV group than that in the TAV group [relative risk (RR) = 0.067, 95% CI = 0.008-0.596, < 0.05]. The risk of other blocks in the BAV group was about half of that in the TAV group (RR = 0.498, 95% CI = 0.240-1.032); however, the difference was not statistically significant ( > 0.05).

Conclusion: The present study found that patients with BAV had a lower rate of third-degree conduction disturbances after TAVI than patients with TAV.

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