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‘Floating lotus’ sign spotted: could prevent unnecessary procedure cancellations in AFib patients

NCT ID NCT07439731

Knowledge-focused Sponsor: Changhai Hospital Source: ClinicalTrials.gov ↗

What the study statuses mean

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Recruitment status, easiest to join first

Recruiting now
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 This study
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 study looked at 172 people with atrial fibrillation who had a heart procedure guided by a special ultrasound. Researchers found a common harmless imaging artifact, called the 'Floating Lotus' sign, that can look like a dangerous blood clot. By learning to tell the difference, doctors can avoid canceling procedures or changing blood thinners unnecessarily.

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

172 people

The number who actually took part.

Started

Jan 2024

Finished

Dec 2024

Lead sponsor

Other sponsor

The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.

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 population was derived from patients with atrial fibrillation who consecutively underwent intracardiac echocardiography (ICE)-guided catheter ablation and/or left atrial appendage occlusion (LAAO) between January and December 2024 at three tertiary medical centers in China.

Ages

Children (under 18), adults (18 to 64) and older adults (65 and over)

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 with a confirmed diagnosis of non-valvular atrial fibrillation (paroxysmal or persistent). * Completion of complete intracardiac echocardiography (ICE) imaging during the catheter ablation or left atrial appendage occlusion (LAAO) procedure. Exclusion Criteria: * Confirmed intracardiac thrombus on pre-procedural transesophageal echocardiography (TEE) or left atrial computed tomography angiography (CTA). * Significant valvular heart disease (moderate or severe stenosis/regurgitation) or a history of cardiac surgery. * Incomplete clinical or imaging data.

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Conditions

The condition(s) this trial relates to.

atrial fibrillation

As listed by the trial registrant

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

Atrial fibrillation (AF)

Contacts and locations

Locations

  • Shanghai Shidong Hospital, Yangpu District

    Shanghai, Shanghai Municipality, 200438, China

  • The First Affiliated Hospital of Naval Medical University (Shanghai Changhai Hospital)

    Shanghai, Shanghai Municipality, 200433, China

More trials for these conditions

Other studies related to the condition(s) this trial covers.