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Atrial FibrillationJuly 2019Summary reviewed November 2026

New Ultrasound Mapping Helps 7 in 10 Persistent Atrial Fibrillation Patients Stay Rhythm-Free After One Procedure

A novel ultrasound mapping system guided doctors to find and treat abnormal heart rhythm sources beyond the usual areas, leading to 72.5% of patients remaining free from atrial fibrillation one year after a single ablation procedure. When patients needed a second procedure, the success rate climbed to 93%.

What the trial was testing

The UNCOVER AF enrolled 129 patients with atrial fibrillation. The study was sponsored by Acutus Medical and tracked outcomes across the full group of patients who matched the trial's eligibility profile.

Researchers followed patients through treatment and into recovery, tracking the outcomes that mattered most for the disease being studied.

What the results showed

72.5% of patients stayed free from atrial fibrillation for a full year after one ablation guided by this new mapping system.

Circulation. Arrhythmia and electrophysiology · 2019 · NCT02825992

These findings — that nearly 7 in 10 patients with persistent atrial fibrillation remained free from the condition one year after ablation guided by this ultrasound mapping system — were published in the Circulation. Arrhythmia and electrophysiology and represent the headline result of the study.

Researchers tracked outcomes across 129 patients enrolled in the trial. The result was consistent enough across the group that the team felt confident reporting it.

What this means for patients

For patients with atrial fibrillation, this result changes the calculus on what to ask their care team about. Whether it changes day-to-day care depends on factors like disease subtype, prior treatments, and where the patient is in their care journey.

What you can do now

This new ultrasound imaging tool helps doctors see exactly where abnormal rhythms are coming from in your heart, so they can target them more precisely. About 7 in 10 people stayed free from their irregular heartbeat for a full year with just one procedure. This approach is still being studied — talk to your cardiologist about whether you might be eligible for a trial or if related ablation options are right for you.

Eligibility for the treatments mentioned above depends on specific test results and clinical history. Bring this summary, the trial name, and your most recent labs or pathology report to your next visit.

Open atrial fibrillation trials

RecruitingObservational study

Real-world Experience of Catheter Ablation for the Treatment of Arrhythmias

The primary purpose of this Registry is to assess procedural safety and long-term effectiveness of catheter ablations in the treatment of subjects with PAF, PsAF, and VA. The Registry will utilize real world clinical data obtained from the use of commercially available CARTO™ technologies under the authority of a health care practitioner within a legitimate practitioner-subject relationship. Data from the registry will be used to assess clinical outcomes, including procedural efficiency, safety, and long-term effectiveness of catheter ablation with novel technologies for arrhythmia patients.

Birmingham, Alabama, United States +24 more
RecruitingTesting effectiveness

Amiodarone for the Prevention of Atrial Fibrillation After Minimally Invasive Esophagectomy in Patients With Esophageal Cancer

This phase II trial studies how well amiodarone works in the prevention of atrial fibrillation (AF) after a minimally invasive esophagectomy (MIE) in patients with esophageal cancer. Atrial fibrillation (AF) is an irregular heart rhythm, usually associated with a rapid rate, that is caused by abnormal electrical activity within the atria. AF is the most common complication after MIE for esophageal cancer. There has never been a study of AF after MIE that has used unbiased assignment of patients to receive preventative amiodarone or not. Further, there is no standard recommendation or guideline for preventative medications, such as amiodarone, to decrease the risk of AF in patients having MIE performed for cancer. In fact, most medical centers in the United States and around the world do not give preventative amiodarone after esophagectomy. Giving amiodarone after MIE surgery may be able to reduce the risk of AF for patients with esophageal cancer.

Portland, Oregon, United States