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"Pseudo-endless loop" tachycardia in an AV universal (DDD) pacemaker.

作者信息

Amikam S, Andrews C, Furman S

出版信息

Pacing Clin Electrophysiol. 1984 Jan;7(1):129-31. doi: 10.1111/j.1540-8159.1984.tb04869.x.

DOI:10.1111/j.1540-8159.1984.tb04869.x
PMID:6199757
Abstract

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 QRS complexes produced by P wave and the pacemaker commitment to maintain an upper rate limit by prolongation of the programmed pacemaker AV delay.

摘要

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