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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
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

Full criteria on ClinicalTrials.gov

Sites (1)

Sites in registry order. Pick your city on the disease page to sort them by distance.

SiteCityCountrySite status
Hannover Medical School
Coordinator of this site? Confirm its status
HanoverGermanyUnknown status

This page is information, not medical advice. Discuss any trial with your doctor.