The CT-verified Data Collection Study to Investigate the Correlation Between the Leadless Pacemaker Tip Location and Echo, ECG

NCT ID: NCT06910059

Last Updated: 2025-07-03

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

ACTIVE_NOT_RECRUITING

Total Enrollment

40 participants

Study Classification

OBSERVATIONAL

Study Start Date

2025-06-17

Study Completion Date

2026-06-30

Brief Summary

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The goal of this observational study is to assess inter-/intra- ventricular synchrony and ECG characteristics in relation to Micra tip location.

The secondary objective is (1) to identify an optimal Micra pacing location to improve LV function, (2) to investigate the correlation between Micra tip location and tricuspid regurgitation, and (3) to investigate whether Micra location would impact AV synchrony. Patients with pacing indications who plan to receive Micra AV implantation will be recruited.

Detailed Description

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Conditions

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Bradycardia Sinus AV Block Atrial Fibrillation (AF)

Study Design

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Observational Model Type

CASE_ONLY

Study Time Perspective

PROSPECTIVE

Interventions

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Observational

It is a observational study and patients with pacing indications who plan to receive Micra AV implantation will be recruited. No intervention procedure will be performed.

Intervention Type OTHER

Eligibility Criteria

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Inclusion Criteria

* Patients aged above 18 years old
* Patients who are willing to provide Informed Consent
* Patients with Class I or II indications who plan to receive a leadless pacemaker, including SSS, AVB, AF with bradycardia, etc.
* Patients who plan to conduct a cardiac CT scan after implantation

Exclusion Criteria

* Patients with lead retention
* Patients had heart valve replacement
* Patients diagnosed with ischemic heart diseases
* Patients who are allergic to or refuse to use contrast in CT scans
* Patients who are pregnant or have a plan for pregnancy during the study
* Patients with medical conditions that would limit study participation
* Patients already enrolled in another clinical trial which would impact participation of this study
Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Medtronic Cardiac Rhythm and Heart Failure

INDUSTRY

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Locations

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The First Teaching Hospital of Xinjiang Medical University

Ürümqi, Xinjiang, China

Site Status

Countries

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China

References

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Reynolds D, Duray GZ, Omar R, Soejima K, Neuzil P, Zhang S, Narasimhan C, Steinwender C, Brugada J, Lloyd M, Roberts PR, Sagi V, Hummel J, Bongiorni MG, Knops RE, Ellis CR, Gornick CC, Bernabei MA, Laager V, Stromberg K, Williams ER, Hudnall JH, Ritter P; Micra Transcatheter Pacing Study Group. A Leadless Intracardiac Transcatheter Pacing System. N Engl J Med. 2016 Feb 11;374(6):533-41. doi: 10.1056/NEJMoa1511643. Epub 2015 Nov 9.

Reference Type BACKGROUND
PMID: 26551877 (View on PubMed)

Udo EO, Zuithoff NP, van Hemel NM, de Cock CC, Hendriks T, Doevendans PA, Moons KG. Incidence and predictors of short- and long-term complications in pacemaker therapy: the FOLLOWPACE study. Heart Rhythm. 2012 May;9(5):728-35. doi: 10.1016/j.hrthm.2011.12.014. Epub 2011 Dec 17.

Reference Type BACKGROUND
PMID: 22182495 (View on PubMed)

Kirkfeldt RE, Johansen JB, Nohr EA, Jorgensen OD, Nielsen JC. Complications after cardiac implantable electronic device implantations: an analysis of a complete, nationwide cohort in Denmark. Eur Heart J. 2014 May;35(18):1186-94. doi: 10.1093/eurheartj/eht511. Epub 2013 Dec 17.

Reference Type BACKGROUND
PMID: 24347317 (View on PubMed)

Other Identifiers

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Micra-CT EM Study

Identifier Type: -

Identifier Source: org_study_id

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