Response to atrial overdrive pacing during narrow QRS tachycardia. What is the mechanism?

Response to atrial overdrive pacing during narrow QRS tachycardia. What is the mechanism?

A 35-year old lady with no pre-excitation on surface electrocardiogram underwent EP study for recurrent palpitation and documented adenosine responsive narrow QRS tachycardia. Regular narrow QRS tachycardia was induced with critical AH delay on programmed atrial stimulation. An atrial overdrive paci...

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Bibliographic Details
Main Authors: Suchit Majumdar, Krishna Kumar Mohanan Nair, Narayanan Namboodiri, Ajitkumar Valaparambil
Format: Article
Language:English
Published: Elsevier 2020-09-01
Series:Indian Pacing and Electrophysiology Journal
Subjects:
Atrial overdrive pacing
AVNRT
Pseudo A-H-H-A response
Online Access:http://www.sciencedirect.com/science/article/pii/S0972629220300826
Description
Summary:A 35-year old lady with no pre-excitation on surface electrocardiogram underwent EP study for recurrent palpitation and documented adenosine responsive narrow QRS tachycardia. Regular narrow QRS tachycardia was induced with critical AH delay on programmed atrial stimulation. An atrial overdrive pacing (AOD) was performed during the tachycardia (Fig: 1 & 2). What is the response to AOD and what is the mechanism of tachycardia?
ISSN:0972-6292

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