CClinicalTrials.gg
Status unknownNCT03708471THAT-LSPAFUpdated Feb 11, 2020

Two-stage Hybrid Ablation or Thoracoscopic Epicardial Ablation for Long-standing Persistent Atrial Fibrillation

An interventional study of Hybrid ablation and Thoracoscopic surgical ablation in Atrial Fibrillation, sponsored by Guangdong Academy of Medical Sciences. Status unknown at 1 site in China. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2020-02-11.

Sponsored by Guangdong Academy of Medical Sciences · Not applicable, Interventional, and Treatment

The sponsor has not verified this record recently (last verified Feb 2020), so the status shown — last known as Recruiting — may be out of date.

From the registry’s dates

  • Registered 7 months after the study started (first participant enrolled Mar 2018, registered Oct 2018).
Phase
Not applicable
Study type
Interventional
Enrollment
150
Allocation
Randomized
Ages
18 Years and older
Sex
All
01

Study summary

Hybrid ablation, as an emerging strategy for atrial fibrillation (AF) in recent years, shows encouraging outcomes in many medical centers. A lot of cases demonstrated hybrid ablation has higher success rate than surgical ablation on patients with persistent AF, especially long-standing persistent AF (LSPAF). But it is still lack of high level evidence to prove it.

This study focus on patients with long-standing persistent atrial fibrillation (LSPAF). In order to compare the efficacy and safety of hybrid ablation (two-stage) versus thoracoscopic surgical ablation, a randomized, controlled clinical trial will be performed in the population of LSPAF patients.

Read the detailed description

In this study, all selected LSPAF patients will receive thoracoscopic surgical ablation. After 3 months of blanking-period, patients off antiarrhythmic therapy freedom from atrial arrhythmia (including atrial tachycardia, atrial flutter and atrial fibrillation) will be divided into Hybrid group and Surgical group randomly and equally. Patients of Hybrid group will receive transcatheter endocardial electrophysiological mapping and catheter ablation after randomization subsequently. In followed 2 years, cardiovascular risk control will be recommended to 2 groups' patients.

During the 2-year follow-up, 7d-Holter will be used to monitor patients' rhythm and cardiac conditions will be confirmed by transthoracic echocardiography (TTE). Physical examination and examinations mentioned above will be performed in 3 months, 6 months, 12 months, 18 months, 24 months and suspected recurrence.

02

Conditions studied

  • Atrial Fibrillation

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Keywords

  • Atrial fibrillation
  • Hybrid ablation
  • Surgical ablation
03

In context

Atrial Fibrillation

3,870 studies on the registry are indexed under Atrial Fibrillation; 924 are open to participants now.

This study's planned enrollment of 150 is close to the median of 144 across 2,380 interventional studies indexed under Atrial Fibrillation.

Browse Atrial Fibrillation studies →

Lead sponsor

Guangdong Academy of Medical Sciences is the lead sponsor of 2 studies on the registry; none are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  • Older than 18 years old.
  • Nonvalvular and long-standing persistent atrial fibrillation confirmed by echocardiography and electrocardiography respectively.
  • Written informed consent

Exclusion criteria

Exclusion Criteria:

  • Secondary atrial fibrillation caused by other reversible diseases.
  • Left atrial diameter >55mm confrimed by Transthoracic echocardiography.
  • Intracardial mass or thrombus.
  • Previous cardiac surgery.
  • Uncontrolled heart failure or LVEF less than 30%.
  • Severe chest wall deformity.
  • Possibly pleural adhesion or pericardial adhesion caused by previous thoracic surgery, tuberculosis or constrictive pericarditis.
  • Severe comorbidities (e.g. severe CAD, severe renal failure, severe liver failure).
  • Life expectancy less than 2 years (e.g. patients with MODS or cancer)
  • Unsuitable for radiation exposure (e.g. pregnancy)
05

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Single (Outcomes assessor)
Enrollment
150 participants (estimated)

Study arms

  • Experimental
    Two-stage hybrid abltaion

    After thoracoscopic surgical ablation and 3 months of blanking-period, patients in this group will receive percutaneous catheter ablation and recommendations about cardiovascular risk control.

    Procedure: Hybrid ablation

  • Active comparator
    Thoracosopic surgical ablation

    After thoracoscopic surgical ablation and 3 months of blanking-period, patients in this group will only receive recommendations about cardiovascular risk control.

    Procedure: Thoracoscopic surgical ablation

Interventions

  • ProcedureHybrid ablation

    This intervention including thoracoscopic surgical ablation, percutaneous catheter ablation and cardiovascular risk control.

  • ProcedureThoracoscopic surgical ablation

    This intervention including thoracoscopic surgical ablation and cardiovascular risk control.

06

What researchers measure

Primary outcomes

  1. Atrial tachyarrhythmia recurrence

    Atrial arrhythmia (including atrial tachycardia, atrial flutter and atrial fibrillation) longer than 30s, off antiarrhythmic therapy, recorded by ECG or Holter.

    Time frame: 24 months after blanking-period.

Secondary outcomes

  1. Systemic atrial embolism

    Including cerebral infarction and other peripheral atrial embolism

    Time frame: 24 months after blanking-period.

  2. Left atrial thrombus

    New-onset left atrial thrombus confirmed by TEE or TTE

    Time frame: At 3months, 6months, 12months, 18months, 24months after intervention.

07

Study locations

1 of 1 sites recruiting
  • Guangdong General Hospital
    Guangzhou, Guangdong 510080, China
    • Huiming Guo, MD., PhD. · Contact · guohuiming@163.net · +86 13609089789
    • Yuyuan Zhang, Jr. · Sub investigator
    Recruiting
08

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Feb 11, 2020, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT03708471
Lead sponsor
Guangdong Academy of Medical Sciences
Responsible party
Huiming Guo (Director of department of adult cardiac surgery, Guangdong Academy of Medical Sciences) — Principal investigator
First posted
Oct 17, 2018
Start date
Mar 4, 2018
Primary completion
Jul 2022 (estimated)
Completion
Dec 2022 (estimated)
Last update
Feb 11, 2020

Study contacts

Huiming Guo, MD, PhD
Contact
guohuiming@163.net
+86 13609089789

Oversight

FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is status unknown, as verified in Feb 2020. You cannot join it, but the record below documents what was studied.

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