AV Block: Old and New Observations-AV Block: Old and New Observations

Video Transcription

Video Summary

The video transcript outlines a session on electrocardiograms (ECGs) and atrioventricular (AV) block. Chaired by Evan Cronin from Temple and Emily Ong from Yale, the session featured talks on various aspects of AV block. Dr. Behzad Bhavri discussed vaguely-induced and adenosine-sensitive paroxysmal heart block, covering identification and treatment without disclosing any conflicts of interest. Adenosine, which slows sinoatrial and AV nodal conduction, was explored, along with the vagus nerve's role in intrinsic and extrinsic paroxysmal AV blocks. Extrinsic blocks, associated with high or low adenosine levels, are treated with lifestyle changes or medications like theophylline.<br /><br />Dr. Sergio Pinsky discussed multilevel block and differentiated between benign and malignant types, often resulting in different conduction sequences, while Dr. Rachel Kaplan focused on heart block post-transcatheter aortic valve replacement (TAVR). Kaplan highlighted the higher risk of conduction injuries with TAVR compared to surgical valve replacement, influenced by valve type and patient anatomy. She emphasized monitoring and risk stratification based on EKG changes to manage discharge plans effectively. Lastly, Dr. Carlos Morillo addressed syncope in patients with bifascicular block, questioning the current guidelines' adequacy and the role of empirical pacing. Throughout, the importance of individual patient assessment and evolving guidelines in managing these cardiac conditions was underscored.

Keywords

electrocardiograms

atrioventricular block

ECG

adenosine

vagus nerve

paroxysmal heart block

transcatheter aortic valve replacement

TAVR

bifascicular block

syncope

risk stratification