Left Atrial Appendage Arrhythmogenic and Thrombogenic Substrate

NCT ID: NCT06405750

Last Updated: 2024-12-09

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

RECRUITING

Clinical Phase

NA

Total Enrollment

1000 participants

Study Classification

INTERVENTIONAL

Study Start Date

2024-08-01

Study Completion Date

2035-12-31

Brief Summary

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The purpose of the project is to elucidate whether it is possible to identify which patients are at risk of forming blood clots that can cause stroke based on analysis of the electrocardiogram.

In connection with the operation, the small pouch known as the auricle of the heart is closed, which can be completely removed after closing. This procedure is common in patients with atrial fibrillation to protect the brain from stroke. In the project, all patients will have this auricle closed if they agree to participate in the project.

After closure, the auricle is usually discarded. We will analyze the blood and the auricle tissue taken (if available) in connection with the operation itself, together with the analysis of the electrocardiogram recorded before the planned heart operation.

Detailed Description

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Patients scheduled for elective heart surgery are invited to participate. After informed consent is signed, an ECG and blood samples are gathered the day before surgery or the same day of the surgery is planned.

During surgery, the patients undergo closure of the left atrial appendage (LAA). The choice of the device is at the discretion of the surgeon. If possible, the entire LAA is removed and processed for further analysis. The right atrial appendage is likewise removed and follows the same procedure as the LAA.

The analyses include measurement of up-/down-regulated thrombosis factors and inflammatory markers.

The right and left atrial appendage tissue collected are immediately processed for micro-patch-clamp studies, and the remaining tissue is divided into a part that is frozen for later analyses and a part that is fixed and embedded in paraffin for further histological analyses.

Conditions

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Atrial Fibrillation Stroke

Keywords

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heart surgery atrial myocardiopathy arrhythmogenic substrate stroke cerebral transitory ischemic attack thrombogenesis cardiac embolism

Study Design

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Allocation Method

NA

Intervention Model

SINGLE_GROUP

Mechanistic study based on analysis of biological material collected along with electrocardiogram features on individuals undergoing open-heart surgery
Primary Study Purpose

OTHER

Blinding Strategy

NONE

Study Groups

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LAA closure

All patients included in the study undergo closure of the Left Atrial Appendage

Group Type OTHER

left atrial appendage closure

Intervention Type PROCEDURE

systematic closure of the left atrial appendage in addition to the planned heart surgery

Interventions

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left atrial appendage closure

systematic closure of the left atrial appendage in addition to the planned heart surgery

Intervention Type PROCEDURE

Eligibility Criteria

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Inclusion Criteria

* signed informed consent AND
* planned any open-heart surgery:

* CABG
* valve repair or replacement
* aorta surgery
* any combination of the above

Exclusion Criteria

* current endocarditis
* follow-up not possible
Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Rigshospitalet, Denmark

OTHER

Sponsor Role collaborator

University of Copenhagen

OTHER

Sponsor Role collaborator

University Hospital Bispebjerg and Frederiksberg

OTHER

Sponsor Role lead

Responsible Party

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Helena DOMINGUEZ

MD, PhD, Associate Professor

Responsibility Role PRINCIPAL_INVESTIGATOR

Principal Investigators

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Helena Dominguez

Role: STUDY_DIRECTOR

University Hospital Bispebjerg and Frederiksberg

Locations

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Rigshospitalet

Copenhagen, , Denmark

Site Status RECRUITING

Countries

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Denmark

Central Contacts

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Helena DOMINGUEZ, MD, PhD

Role: CONTACT

Phone: 4522989343

Email: [email protected]

Ida Gustafsson, MD, PhD

Role: CONTACT

Phone: 4538635000

Email: [email protected]

Facility Contacts

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Christian L Carranza

Role: primary

Other Identifiers

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P-2023-227

Identifier Type: OTHER

Identifier Source: secondary_id

H-23015282

Identifier Type: -

Identifier Source: org_study_id