Show Summary Details
Page of

Approach to Wide QRS Tachycardias 

Approach to Wide QRS Tachycardias
Approach to Wide QRS Tachycardias

Yong-Mei Cha

and Samuel J. Asirvatham

Page of

PRINTED FROM OXFORD MEDICINE ONLINE ( © Oxford University Press, 2021. All Rights Reserved. Under the terms of the licence agreement, an individual user may print out a PDF of a single chapter of a title in Oxford Medicine Online for personal use (for details see Privacy Policy and Legal Notice).

date: 18 September 2021

Among the most difficult set of arrhythmias to analyze, diagnose, and treat appropriately in the electrophysiology laboratory are wide QRS tachycardias. The reasons for this difficulty include the relatively rare occurrence of some of these conditions and the fact that the differential diagnosis for a wide QRS rhythm includes all the possibilities for a narrow QRS rhythm and, in addition, arrhythmias related to antegrade pathway conduction and ventricular tachycardia. This wide range of possibilities can be confusing even to experienced electrophysiologists, and a complex case may lead to inappropriate diagnoses and maneuvers, including a wrong ablation sequence. This chapter focuses on the overall approach to wide QRS tachycardias. A brief description of the clinical and electrocardiographic features is followed by an in-depth discussion of diagnostic maneuvers and approaches in the electrophysiology laboratory. Finally, representative electrograms and case studies follow to illustrate some of the more involved principles discussed in this chapter.

Access to the complete content on Oxford Medicine Online requires a subscription or purchase. Public users are able to search the site and view the abstracts for each book and chapter without a subscription.

Please subscribe or login to access full text content.

If you have purchased a print title that contains an access token, please see the token for information about how to register your code.

For questions on access or troubleshooting, please check our FAQs, and if you can't find the answer there, please contact us.