Evidence map›Paper›PMID 39868621›Full record

ArticleAnnals of noninvasive electrocardiology : the official journal of the International Society for Holter and Noninvasive Electrocardiology, Inc2025

Micra Leadless and Transvenous Pacemaker: A Single-Center Comparative Study of QRS Wave Duration Resulting From Different Pacing Sites.

Yichi Yu, Xiaomin Yang, Xiaoming Lian, Yan Zhao, Bo Liu, Xiangfei Feng, Qunshan Wang, Yigang Li

Abstract readComparative Study
PubMed Full text at PMC Publisher
In one paragraph

Article in Annals of noninvasive electrocardiology : the official journal of the International Society for Holter and Noninvasive Electrocardiology, Inc, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

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

The trial behind it

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Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

1 citing paper in PubMed.

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4 · The record

Corrections and comments

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

8 authors.

Yichi YuDepartment of Cardiology, Xinhua Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China.ORCID 0000-0002-9987-911X
Xiaomin YangDepartment of Cardiology, Xinhua Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China.
Xiaoming LianDepartment of Cardiology, Xinhua Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China.
Yan ZhaoDepartment of Cardiology, Xinhua Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China.
Bo LiuDepartment of Cardiology, Xinhua Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China.
Xiangfei FengDepartment of Cardiology, Xinhua Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China.ORCID 0000-0002-7616-8235
Qunshan WangDepartment of Cardiology, Xinhua Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China.
Yigang LiDepartment of Cardiology, Xinhua Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveTo compare the paced QRS duration on different sites in age-, gender-, and indication-matched patients implanted with Micra leadless pacemakers and conventional transvenous pacemakers (TV-PM).

methodA total of 82 patients from Xinhua Hospital, Shanghai Jiaotong University, were enrolled, including two groups of 41 patients matched according to gender, age, and pacemaker indications, who underwent Micra and TV-PM implantations, respectively. The baseline data of the patients, the pacing site described using three- and nine-partition methods, and the paced QRS duration on 12-lead electrocardiogram were then analyzed.

resultsOverall, patients in our population were on average 79.2 years of age and mostly male (75.6%). Atrioventricular node dysfunction was the most common indication (56.1%) for pacemaker therapy. Mid-septum, especially Site 5, is the implantation site for most patients in both groups. Micra (145 ms) and TV-PM (133 ms) both had the narrowest-paced QRS at high septum, but Micra may exhibit significantly more reduced QRS duration than TV-PM at low septum (Micra vs. TV-PM: 143.0 [142.8-156.5] ms vs. 163.5 ± 17.5 ms, p = 0.044).

conclusionThe narrowest-paced QRS complex for Micra leadless pacemakers is achieved at high septum, and pacing at low septum by Micra may acquire shorter QRS duration than conventional TV-PM.

Indexed as

Arrhythmias, CardiacCardiac Pacing, ArtificialElectrocardiographyPacemaker, ArtificialAgedAged, 80 and overEquipment DesignFemaleHumansMaleMiddle AgedRetrospective StudiesClinical: Electrophysiology—conduction disturbancesClinical: Implantable devices—pacemaker‐bradyarrhythmiasClinical: Implantable devices—physiologic pacingClinical: Non‐invasive techniques ‐ electrocardiography

Identifiers

PMID39868621
PMCPMC11967726

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