Long RP interval tachycardia. What is the mechanism?

A 41-year-old man with a history of tachycardia refractory to multiple antiarrhythmic drugs was sent to our institution. His 12-lead electrocardiogram demonstrated incessant narrow QRS complex tachycardia with negative P waves in the inferior leads and long RP interval. Occasionally, the tachycardia...

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Detalles Bibliográficos
Autores principales: Jiménez-Díaz, Javier, González-Marín, María-Arantzazu, González-Ferrer, Juan J., Higuera-Sobrino, Felipe
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Elsevier 2017
Materias:
EPS for Resident Physicians
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5459351/
https://www.ncbi.nlm.nih.gov/pubmed/28607623
http://dx.doi.org/10.1016/j.joa.2016.06.004
Descripción
Sumario:A 41-year-old man with a history of tachycardia refractory to multiple antiarrhythmic drugs was sent to our institution. His 12-lead electrocardiogram demonstrated incessant narrow QRS complex tachycardia with negative P waves in the inferior leads and long RP interval. Occasionally, the tachycardia terminated after a P wave and then was restarted after a sinusal beat. An EP study was performed during tachycardia. Intracardiac electrograms during tachycardia and response to pacing maneuvers are shown. What is the tachycardia mechanism?

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