Mechanical interaction between sequential Micra devices resolved by programming alone: a case of premature battery depletion in a 91-year-old patient.

Changjian He, Tianze Guo, Chunhua Ding, Wenchang Zhang

Abstract readCase Reports

In one paragraph

Article in European heart journal. Case reports, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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0citing papers in PubMed

–field-weighted citation impact

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Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

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0 citing papers in PubMed.

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4 · The record

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PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

4 authors.

Changjian HeCardiac Department, Aerospace Center Hospital, Peking University Aerospace School of Clinical Medicine, 15 Yuquan Road, Haidian District, Beijing 100049, China.

Tianze GuoCardiac Department, Aerospace Center Hospital, Peking University Aerospace School of Clinical Medicine, 15 Yuquan Road, Haidian District, Beijing 100049, China.

Chunhua DingCardiac Department, Aerospace Center Hospital, Peking University Aerospace School of Clinical Medicine, 15 Yuquan Road, Haidian District, Beijing 100049, China.

Wenchang ZhangCardiac Department, Aerospace Center Hospital, Peking University Aerospace School of Clinical Medicine, 15 Yuquan Road, Haidian District, Beijing 100049, China.ORCID https://orcid.org/0000-0003-2152-1502

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Background: The Micra transcatheter pacing system provides a leadless alternative for patients requiring ventricular pacing. When a leadless device reaches end of service or fails prematurely, a second device is commonly implanted. Case summary: We report a 91-year-old man with premature Micra AV battery depletion 28 months after implantation. During the second implantation, mechanically mediated device-device interaction caused intermittent oversensing. Oversensing was resolved by increasing the sensing threshold, which avoided device repositioning or retrieval. Discussion: Suspected mechanically mediated interaction between sequential Micra devices may cause oversensing and pacing inhibition. In patients with clinically stable condition and adequate intrinsic R-wave amplitude, programming optimization may be considered before invasive revision; however, future management should account for cumulative right ventricular device burden.

Indexed as

Battery depletionDevice–device interactionLeadless pacemakerMicra AVOversensingProgramming

Identifiers

PMID42370231

DOI10.1093/ehjcr/ytag431

PMCPMC13308961

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.