One tachycardia with two entrainment responses: what is the mechanism?
The patient presented for electrophysiology study and ablation for a history of narrow complex tachycardia. Both typical and atypical atrioventricular nodal reentrant tachycardia (AVNRT) were induced. For the atypical AVNRT, two different entrainment responses were recorded owing to different timing in delivering the ventricular pacing train.
Bhakta
Hetal
H
Division of Cardiac Electrophysiology, Southern California Permanente Medical Group, Los Angeles, CA, USA.
Wang
Xunzhang
X
Gupta
Nigel
N
Ji
Sen
S
D000328:Adult; D002304:Cardiac Pacing, Artificial; D003937:Diagnosis, Differential; D004562:Electrocardiography; D005260:Female; D006329:Heart Conduction System / Q000503:physiopathology; D006801:Humans; D013611:Tachycardia, Atrioventricular Nodal Reentry / Q000209:etiology / Q000503:physiopathology*; D013997:Time Factors; D018879:Ventricular Premature Complexes / Q000150:complications / Q000503:physiopathology*