title: "2 for 1 Phenomenon" on Implantable Cardioverter Defibrillator Intracardiac Tracing.
abstract: "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.
authors.affiliation: Department of Medicine, University of Mississippi Medical Center, Jackson, Mississippi.
authors.forename: Eric
authors.initials: E
authors.lastname: McCLENDON
authors.affiliation: Department of Medicine, University of Mississippi Medical Center, Jackson, Mississippi.
authors.forename: Takeki
authors.initials: T
authors.lastname: Suzuki
authors.affiliation: Department of Medicine, University of Mississippi Medical Center, Jackson, Mississippi.
authors.forename: Tanyanan
authors.initials: T
authors.lastname: Tanawuttiwat
authors.affiliation: Department of Medicine, University of Mississippi Medical Center, Jackson, Mississippi.
authors.forename: Troy E
authors.initials: TE
authors.lastname: Rhodes
authors.affiliation: Department of Medicine, Johns Hopkins University, Baltimore, Maryland.
authors.forename: Ronald D
authors.initials: RD
authors.lastname: Berger
mesh_terms: D017147:Defibrillators, Implantable / Q000009:adverse effects*; D003937:Diagnosis, Differential; D004562:Electrocardiography / Q000379:methods*; D006801:Humans; D008297:Male; D008875:Middle Aged; D013611:Tachycardia, Atrioventricular Nodal Reentry / Q000175:diagnosis* / Q000209:etiology*
keywords: 2 for 1 phenomenon; AVNRT; ICD