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NCT07435181Not yet recruiting

Comparative Outcomes of Radiofrequency Ablation of Concealed and Manifest Accessory Pathways: a Single Center, Retrospective Observational Study

Source: ClinicalTrials.gov · Last updated 27 Feb 2026

Brief summary (registry, in English)

The aim of this observational, retrospective study is to evaluate, comparatively, procedural outcomes of APs (Accessory pathway) ablation according to the conduction properties (i.e., manifest vs. concealed) and to assess both short- and long-term outcomes of RFA (RF ablation).

Status (registry)
Not yet recruiting
Study type
Observational
Enrollment
220 (estimated)
First submitted
20 Feb 2026
Start date
1 Apr 2026
Primary completion date
30 Apr 2027
Lead sponsor
IRCCS Ospedale San Raffaele
NCT number
NCT07435181

What you commit to

  • Study type: Observational
  • Planned participants: 220
  • From 1 Apr 2026 to the primary completion date, 30 Apr 2027
  • No sites listed in no 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.

Other

  • Lack of pre-specified follow-up: only patients with at least 1 years follow-up ambulatory visit will be included in the study
  • REDO CA procedure

Who the study is looking for

  • Patients who consecutively underwent an electrophysiological (EP) study between 2005 and 2023 at San Raffaele Scientific Institute are included if they met one of the following criteria:
    • Patients referred for EP study due to:
    • EITHER clinical suspicion of paroxysmal supraventricular tachycardia without prior documentation of ventricular pre-excitation and/or supraventricular arrhythmia (SVA) on 12-lead surface electrocardiogram, OR with electrocardiographic evidence of SVA, AND electrophysiological confirmation of atrioventricular re-entrant tachycardia (AVRT) as the arrhythmic mechanism.
    • Ventricular pre-excitation documented on serial 12-lead surface ECGs, with or without clinical episodes suggestive of AVRT, who underwent catheter ablation of the accessory pathway based on:
    • The presence of high-risk electrophysiological features (e.g., short antegrade effective refractory period of the AP, rapid conduction during atrial fibrillation), or Induction of sustained AVRT during the EP study.
  • Aged between 5 to 60 years old

Age in the registry: 5 years to 60 years · Sex: All · Does not accept healthy volunteers

Full criteria on ClinicalTrials.gov

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