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New study checks if special pacing leads can reliably spot dangerous heart rhythms

NCT ID NCT06745778

Knowledge-focused Sponsor: Medtronic Cardiac Rhythm and Heart Failure Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now This study
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This observational study looks at how signals from a left bundle branch pacing lead change during daily activities and overdrive pacing in 50 people with an ICD or CRT-D. Researchers want to see if these leads can accurately detect ventricular tachycardia or fibrillation. Participants will have their heart signals recorded at rest and while walking, right after implantation and again at 6 months.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Participants

About 50 people

The number the study aims to enrol. It can still change while the study runs.

Started

Feb 2025

Expected to finish

Jul 2026

An estimate. End dates often move.

Lead sponsor

A company

The lead sponsor is a pharmaceutical, biotech, or medical-device company.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Who is studied

The study selected two study site in China. One is a Tertiary A hospital in Zhejiang Province, and another is a hospital in Shanghai. Both of the two sites locate in south east of China. This study will enroll around 50 subjects who meet the inclusion and exclusion criteria from the ICD or CRT-D patients who have received LBBAP in the two hospitals.

Ages

18 years and older

Sex

Anyone

Healthy volunteers

Not accepted

This study is not open to healthy volunteers. The entry requirements below say who it is open to.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * Patients aged \>=18 yrs. * Patients indicated for ICD or CRT-D (primary or secondary prevention) * Patients who recently (\<=30 days) received ICD/CRT-D implantation with LBBP * Patients' EGM can be digitally recorded * Patients are willing to participate in the study and provide signed informed consent Exclusion Criteria: * Patients received CIED upgrade or replacement with old pacing leads * Patients are pregnant * Patients participate in another study that will confound this study

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Conditions

The condition(s) this trial relates to.

ventricular fibrillation ventricular tachycardia

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Ventricular fibrillation Ventricular tachycardia (VT)

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The places running it

    2 sites. The list below names each one and where it is.

  2. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

    Open the record ↗

  3. A doctor treating you

    A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.

Contacts and locations

Locations

  • Shanghai Tongren Hospital

    RECRUITING

    Shanghai, 200025, China

  • The First Affiliated Hospital of Wenzhou Medical University

    RECRUITING

    Wenzhou, Zhejiang, 325000, China

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