Open AccessLong RP interval tachycardia. What is the mechanism?
Author(s) -
JiménezDíaz Javier,
GonzálezMarín MaríaArantzazu,
GonzálezFerrer Juan J.,
HigueraSobrino Felipe
Publication year - 2017
Publication title -
journal of arrhythmia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.463
H-Index - 21
eISSN - 1883-2148
pISSN - 1880-4276
DOI - 10.1016/j.joa.2016.06.004
Subject(s) - medicine , tachycardia , intracardiac injection , cardiology , qrs complex , electrocardiography , anesthesia
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?