Long-term Results of Catheter Ablation for Irregular and Fast Heart Rhythms
Follows adults with atrial fibrillation or ventricular tachycardia treated with catheter ablation procedures.
Key facts
- Who runs it
- Beijing Anzhen Hospital
- Where
- Beijing, ChinaSee the 2 sites
- Trial code
- Registry title
- Complex Arrhythmia Registry
- Status
- Recruiting
- People taking part
- 4,000 people, planned
- Started
- 21 Oct 2025
- Expected to end
- Jun 2032
- Type of study
- Observational, 3 groups
- Treatments tested
- AF ablation
- VT ablation
- Record updated
- 4 June 2026
Who can take part
AI summary
From the trial's eligibility criteria. Machine-read from the registry text on this page, so it can be wrong. The registry text below and the trial team decide who can take part.
The trial is looking for adults who will have catheter ablation for the first time, for atrial fibrillation (AF) or for ventricular tachycardia (VT) linked to a heart disease. The ablation must use a 3D mapping system.
- Age
- 18 years or older
- Sex
- All sexes can join.
- Disease stage
- AF group: paroxysmal or persistent AF. VT group: VT linked to structural heart disease, such as ischemic heart disease or cardiomyopathy (DCM, ARVC, HCM).
- Earlier treatment
- The planned ablation must be the first catheter ablation for AF or for VT.
Main reasons for not taking part
- AF caused by a clearly reversible cause (for example hyperthyroidism or acute alcohol intoxication)
- VT caused by a temporary or reversible cause, or VT without structural heart disease
- Unstable angina or heart attack within 30 days (AF group); heart surgery within 60 days (VT group)
- Severe active infection such as sepsis or septic shock
- Joining another interventional trial that could affect the results
The registry criteria, word for word
Show all 2 criteriaShow less
Other criteria
- Atrial Fibrillation (AF) Cohort:; Inclusion Criteria (Patients must meet ALL of the following criteria):; Age ≥ 18 years; Diagnosed with atrial fibrillation (AF), including paroxysmal AF (PAF) and persistent AF (PsAF); Scheduled to undergo first-time catheter ablation for AF; Procedure to be performed using a 3D mapping system; Provision of signed written informed consent for study participation and willingness and ability to comply with all protocol-required follow-up assessments; Exclusion Criteria (Patients meeting ANY of the following criteria will be excluded):; Severe congenital heart disease (e.g., Tetralogy of Fallot, corrected transposition of the great arteries); AF secondary to a clearly reversible cause (e.g., hyperthyroidism, post-operative state, acute alcohol intoxication); Unstable angina pectoris or acute myocardial infarction (MI) within 30 days prior to enrollment/procedure; Severe active infection (e.g., septic shock, sepsis); Contraindications to anticoagulation therapy; Current participation in another interventional clinical trial that may confound the results of this study; Any other condition where, in the investigator's judgment, the patient is unsuitable for participation in this study
- Ventricular Tachycardia (VT) Cohort; Inclusion Criteria (Patients must meet ALL of the following criteria):; Age ≥ 18 years; Diagnosed with ventricular tachycardia (VT) associated with underlying structural heart disease, including:; Ischemic heart disease (e.g., prior MI, coronary artery disease); Non-ischemic cardiomyopathy (e.g., dilated cardiomyopathy (DCM), arrhythmogenic right ventricular cardiomyopathy (ARVC), hypertrophic cardiomyopathy (HCM)); Scheduled to undergo first-time catheter ablation for VT; Procedure to be performed using a 3D mapping system; Provision of signed written informed consent for study participation and willingness and ability to comply with all protocol-required follow-up assessments; Exclusion Criteria (Patients meeting ANY of the following criteria will be excluded):; VT due to a transient or reversible cause (e.g., acute myocardial ischemia, severe electrolyte imbalance); Idiopathic ventricular tachycardia (VT occurring in the absence of structural heart disease); Cardiac surgery within 60 days prior to the planned ablation procedure; Severe coagulopathy (e.g., platelet count < 50 x 10⁹/L, disseminated intravascular coagulation (DIC)); Severe heart failure with left ventricular ejection fraction (LVEF) < 20%; Severe active infection (e.g., septic shock, sepsis); Current participation in another interventional clinical trial that may confound the results of this study; Any other condition where, in the investigator's judgment, the patient is unsuitable for participation in this study
Where in China
- Beijing Anzhen Hospital, Capital Medical UniversityBeijing, ChinaContact: Jing LinNot yet recruiting
- No. 2 Anzhen Rd, Chaoyang District, 100029Beijing, ChinaContact: Deyong Long, MDTaking people
About the trial
What the trial wants to find out
This is a prospective, non-randomized, multicenter observational registry study designed to systematically evaluate the long-term efficacy and safety of catheter ablation for treating atrial fibrillation (AF) and ventricular tachycardia (VT) in Chinese patients.
The 3 groups in the trial
- PAF
Paroxysmal atrial fibrillation
Treatment: AF ablation
- PeAF
Persistent atrial fibrillation
Treatment: AF ablation
- VT
Ventricular tachycardia
Treatment: VT ablation
Questions to ask the study team
- How often do I need to come in, and for how long each time?
- Are travel costs paid?
- Can I keep my own doctor?
- What happens if I want to stop?
Contact the study team: see the registry record → Contacts and Locations
Print a page for my doctorData and sources
- Registry record
- Listed on ClinicalTrials.gov.
- Official title
- Complex Arrhythmia Registry(CAR): Long-term Outcomes of Catheter Ablation for Atrial Fibrillation or Ventricular Tachycardia: A Multicenter, Prospective Cohort Study
- Plain-language title
- Long-term Results of Catheter Ablation for Irregular and Fast Heart RhythmsGenerated from the registry record. The registry title is the official one.
- AI summary
- From the trial's eligibility criteria. Read by machine on 12 November 2026.
- Record updated
- 4 June 2026