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“2 for 1 Phenomenon” on Implantable Cardioverter Defibrillator Intracardiac Tracing
Author(s) -
McCLENDON ERIC,
SUZUKI TAKEKI,
TANAWUTTIWAT TANYANAN,
RHODES TROY E.,
BERGER RONALD D.
Publication year - 2016
Publication title -
pacing and clinical electrophysiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.686
H-Index - 101
eISSN - 1540-8159
pISSN - 0147-8389
DOI - 10.1111/pace.12906
Subject(s) - medicine , intracardiac injection , cardiology , implantable cardioverter defibrillator , tachycardia , nodal , accessory pathway , ventricular tachycardia , catheter ablation , atrial fibrillation
“2 for 1 phenomenon” is simultaneous anterograde conduction over the fast and slow pathways of the atrioventricular (AV) nodal pathway, leading to a double ventricular response from each atrial beat. This phenomenon can initiate AV nodal reentrant tachycardia (AVNRT). The unique induction of AVNRT was observed in a patient with an implantable cardioverter defibrillator in our case. Minimal to no retrograde invasion of the slow pathway from the anterogradely conducted fast pathway depolarization is the most accepted explanation.