T-Wave Oversensing in Patients With Left Bundle Branch Pacing: A Report of Three Cases and Review of Literature.

Pacing Clin ElectrophysiolMar 15, 2026 (epub)
Case ReportCardiologyOpen access

Fengqian Chen, Yuqing Wu, Dan Xu et al.

✦ AI-curated · Sources linked

Case in brief

The report describes three patients with T-wave oversensing (TWOS) after left bundle branch pacing (LBBP) at one hospital between 2020 and 2024. TWOS, a pacemaker sensing malfunction, may lead to inappropriate tachyarrhythmia detection and loss of pacing, potentially reducing the benefits of cardiac resynchronization therapy. The authors analyzed possible mechanisms and feasible solutions. The abstract does not provide patient-level presentation details, specific findings, interventions, or outcomes, so how the cases resolved cannot be stated.

What made this case unusual

The report highlights that TWOS after LBBP may be detected immediately after implantation or only after a relatively long interval, complicating recognition.

Diagnostic / clinical pearl

Consider TWOS when a patient with LBBP has inappropriate tachyarrhythmia detection or loss of pacing; it may emerge soon after the procedure or later.

Why it matters

The authors emphasize timely attention to TWOS because it can interfere with pacing and attenuate potential CRT benefits.

Source

PubMed · PMID 41834242Free full text on PubMed Central

Published in Pacing Clin Electrophysiol. This summary was written by xxcode from the publication's abstract and metadata. It is not peer reviewed and is not a substitute for the original article. For clinical decisions, review the original publication.

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