Effect of Left Atrial Appendage Excision on Procedure Outcome in Patients With Persistent and Long-standing Persistent Atrial Fibrillation Undergoing Surgical Ablation

September 25, 2015 updated by: Meshalkin Research Institute of Pathology of Circulation
The aim of this study is to assess the effect of left atrial appendage excision on atrial fibrillation recurrence and incidence of stroke in patients with persistent and long-standing persistent atrial fibrillation undergoing surgical ablation.

Study Overview

Status

Unknown

Conditions

Intervention / Treatment

Study Type

Interventional

Enrollment (Anticipated)

180

Phase

  • Phase 2

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • Russian Federation
      • Krasnoyarsk, Russian Federation
        • Federal Center of Cardiovascular surgery
      • Moscow, Russian Federation
        • Federal State Institution Clinical Hospital of the Presidental Administration of the RF
      • Moscow, Russian Federation
        • Scientific center of the cardiovascular surgery named by A.N. Bakulev
      • Novosibirsk, Russian Federation, 630055
        • State Research Institute of Circulation Pathology

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

18 years to 80 years (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Key Inclusion Criteria:

  • Patients with persistent and long-standing persistent atrial fibrillation eligible for thoracoscopy surgical ablation
  • Signed inform consent

Key Exclusion Criteria:

  • Paroxysmal atrial fibrillation
  • Contraindications for surgical ablation
  • Unwilling to participate

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: Double

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Active Comparator: PVI+Box lesions
Patients were treated with video-assisted thoracoscopy under general anesthesia, according to a previously described protocol. In brief, PVI was performed from the epicardial side with a bipolar radiofrequency ablation clamp. At least 2 overlapping applications around each of the ipsilateral veins were made, and isolation was confirmed by the absence of PV potentials and exit block during pacing. In addition to PVI, the bilateral epicardial ganglia were found by high-frequency stimulation and ablated, as confirmed by the absence of a vagal response after ablation. Finally additional lines were made to create a posterior box lesion. Sensing and pacing maneuvers verified isolation of the posterior box.
Device: Surgical ablation of the left atrium (PVI+Box lesions)
Experimental: PVI+Box lesions+LAA cutting
Patients were treated with video-assisted thoracoscopy under general anesthesia, according to a previously described protocol. In brief, PVI was performed from the epicardial side with a bipolar radiofrequency ablation clamp. At least 2 overlapping applications around each of the ipsilateral veins were made, and isolation was confirmed by the absence of PV potentials and exit block during pacing. In addition to PVI, the bilateral epicardial ganglia were found by high-frequency stimulation and ablated, as confirmed by the absence of a vagal response after ablation. Finally additional lines were made to create a posterior box lesion. Sensing and pacing maneuvers verified isolation of the posterior box.The left atrial appendage was removed by stapling and then cutting.
Device: Surgical ablation of the left atrium (PVI+Box lesions) and left atrial appendage cutting

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Time Frame
Atrial fibrillation recurrences
Time Frame: 18 months
18 months

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Meshalkin Research Institute of Pathology of Circulation

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

May 1, 2011

Primary Completion (Actual)

May 1, 2015

Study Completion (Anticipated)

May 1, 2017

Study Registration Dates

First Submitted

September 24, 2015

First Submitted That Met QC Criteria

September 25, 2015

First Posted (Estimate)

September 29, 2015

Study Record Updates

Last Update Posted (Estimate)

September 29, 2015

Last Update Submitted That Met QC Criteria

September 25, 2015

Last Verified

September 1, 2015

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • 9872TLAA

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

product manufactured in and exported from the U.S.

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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