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CT scan helps doctors avoid nerve damage during heart procedure

NCT ID NCT07330791

Knowledge-focused Sponsor: Centro Medico Teknon Source: ClinicalTrials.gov ↗

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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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 80 people having a heart procedure called ablation to treat irregular heartbeats. Doctors wanted to see if a CT scan could accurately show the location of a nerve near the heart that can be accidentally injured. They compared the CT images with a standard method that uses electrical stimulation to find the nerve. The goal was to make the procedure safer by better understanding the nerve's path.

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

80 people

The number who actually took part.

Started

Apr 2025

Finished

Sep 2025

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

All patients underwent an electrocardiography-gated cardiovascular CT using a 64-slice multidetector row CT scanner (Revolution CT, GE Healthcare Global Diagnostic Imaging) prior to the ablation procedure. The position line was set at 0.5 cm below the tracheal bifurcation to the cardiac diaphragmatic surface. The acquisition was performed within a single breath- hold. The gantry rotation time was 0.35 s, and the tube current was 350-750 mA at 120 kV. Iodinated contrast material (60 mL; Omnipaque 300 mg/mL), was injected at a rate of 4-5 mL/s, followed by 20 mL of saline solution. A second acquisition immediately after is performed to study the venous phase. Original images at 75% or 45% R-R intervals were transferred to post-processing Workstation, with a section thickness of 0.625 mm. If motion artifacts appeared, the electrocardiographic editing technique was used and the reconstructed window was moved forward or backward for 5% R-R interval until the motion artifacts disappeared.

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: * Ability to provide informed consent * Patients who have undergone or will undergo transcatheter AF ablation or CNA * Availability of 64-slice contrast-enhanced MDCT with RPN segmentation using ADAS® software prior to ablation * Age ≥ 18 years Exclusion Criteria: * Inability to provide informed consent * Inability to perform contrast-enhanced CT before transcatheter AF ablation or CNA * Age \< 18 years

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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.

We evaluated CT-guided localization of the right phrenic nerve to enhance safety in transcatheter ablation

Contacts and locations

Locations

  • Antonio Berruezo

    Barcelona, Barcelona, 08022, Spain

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