Mechanisms Underlying Alterations in Cardiac Conduction After Transcatheter Aortic Valve Replacement

What are the site(s) of heart block in patients undergoing transcatheter aortic valve replacement (TAVR), and what are markers of risk for heart block?In this cohort study of 409 patients undergoing TAVR, His bundle studies identified block in both the atrioventricular (AV) node and His bundle and were predictive of delayed block. These observations suggest mechanisms underlying intraprocedural block differ from those causing postprocedural block.Differing prediction models are necessary to identify patients at risk for heart block occurring during vs following TAVR implants.

Corresponding Author: Alfred E. Buxton, MD, Division of Cardiovascular Medicine, Beth Israel Deaconess Medical Center, 185 Pilgrim Rd, Baker 4, Boston, MA 02215 (abuxton@bidmc.harvard.edu).

Link to the article in your story

We encourage you to link out to this article in your story using the link below. It includes an access token that will give free access to the article for your readers up to one year after publication. (The link will be live after the article publishes and embargo is lifted.)

Please see the article for additional information, including full author list, author contributions and affiliations, conflict of interest and financial disclosures, and funding and support.

Need more information? Contact us.