“Pseudo‐endless Loop” Tachycardia in an AV Universal (DDD) Pacemaker | Zendy

AMIKAM SHLOMO | Zendy; ANDREWS CAROLYN | Zendy; FURMAN SEYMOUR | Zendy

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“Pseudo‐endless Loop” Tachycardia in an AV Universal (DDD) Pacemaker

Author(s) -

AMIKAM SHLOMO,

ANDREWS CAROLYN,

FURMAN SEYMOUR

Publication year - 1984

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/j.1540-8159.1984.tb04869.x

Subject(s) - medicine , cardiology , beat (acoustics) , tachycardia , ventricular tachycardia , ventricular rate , implantable loop recorder , anesthesia , heart rate , atrial fibrillation , acoustics , blood pressure , physics

A 3‐beat episode of ventricular arrhythmia was recorded in a patient with an AV universal (DDD) pacemaker. This arrhythmia mimicked “endless loop” tachycardia (ELT) because it appeared following a ventricular premature contraction (VPC), its rate approached the preset upper‐rate limit and the regular P waves disappeared during the episode. However, as retrograde conduction was absent ELT could not exist. The mechanism of this arrhythmia was based on a combination of interference by VPC of the regular sequence of this complexes produced by P wave and the pacemaker commitment to maintain an upper rate limit by prolongation of the programmed pacemaker AV delay.

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