NCT05635864Completed
Impact of Catheter Ablation on ABC Risk Scores
Impact of Catheter Ablation of Atrial Tachyarrhythmias on ABC Stroke and ABC Bleeding Risk Scores
Source: ClinicalTrials.gov · Last updated 5 Mar 2026
Brief summary (registry, in English)
The aim of this prospective, monocentric, non-randomized trial is to investigate the impact of catheter ablation of atrial tachyarrhythmias on the ABC-stroke and ABC-bleeding risk scores. Participants planned for first catheter ablation for symptomatic atrial tachyarrrhythmias (atrial fibrillation, atrial flutter) will be enrolled. Serial blood samples will be collected before and 3, 6 and 12 months after catheter ablation to calculate the ABC scores as well as the traditional bleeding and stroke risks. Following catheter ablation, continuous rhythm monitoring will be achieved using an insertable monitor or an implanted atrial lead of a cardiac implantable electronic device. Additionally, heart rate monitoring via photoplethysmography using a smartwatch and/or smartphone is performed for a period of six months. Data are analyzed for differences in ABC scores before and after ablation in relation to possible AF/AT recurrences. Furthermore, we are going to compare the sensitivity and specificity of different follow-up modalities post ablation. The monitoring via ICM (gold standard) is compared to smartwatch-based monitoring alone, versus smartphone-based monitoring alone or a combination of both for AT/AF recurrences.
- Status (registry)
- Completed
- Study type
- Observational
- Enrollment
- 167 (actual)
- First submitted
- 4 Nov 2022
- Start date
- 3 Jun 2021
- Primary completion date
- 24 Nov 2025
- Lead sponsor
- Hannover Medical School
- Diseases
- Stroke, Atrial fibrillation
- NCT number
- NCT05635864
What you commit to
- Study type: Observational
- Participants enrolled: 167
- From 3 Jun 2021 to the primary completion date, 24 Nov 2025
- 1 site in 1 country
- Visits and tests: ask the trial team, the registry does not list them
Built from the registry fields of ClinicalTrials.gov. It describes the study, not your situation.
Who cannot take part
Copied verbatim from ClinicalTrials.gov and grouped by topic. Only the trial team decides who can take part.
Prior treatment
- Previous left or right atrial ablation
Other illness
- History of TIA / stroke
- LA thrombus formation or history of thrombus formation
Age
- \< 18 years
Other
- Ineligibility for catheter ablation
Who the study is looking for
- Symptomatic atrial tachyarrhythmias (atrial fibrillation, atrial flutter)
- Planned for 1st right or left atrial ablation
- Informed consent
- at least 18 years
Age in the registry: 18 years to - · Sex: All · Does not accept healthy volunteers
Sites (1)
Sites in registry order. Pick your city on the disease page to sort them by distance.
| Site | City | Country | Site status |
|---|---|---|---|
| Hannover Medical School Coordinator of this site? Confirm its status | Hanover | Germany | Unknown status |
This page is information, not medical advice. Discuss any trial with your doctor.