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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Detalles Bibliográficos
Autores principales: Majumdar, Suchit, Mohanan Nair, Krishna Kumar, Namboodiri, Narayanan, Valaparambil, Ajitkumar
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Elsevier 2020
Materias:
Case Report
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7517583/
https://www.ncbi.nlm.nih.gov/pubmed/32730799
http://dx.doi.org/10.1016/j.ipej.2020.07.002
Descripción
Sumario: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?

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