Efficacy of Automated Ablation Annotation Algorithm(Visitag) in Reducing Re-conduction of Isolated Pulmonary Vein and Recurrence after Catheter Ablation for Atrial Fibrillation

Efficacy of Automated Ablation Annotation Algorithm(Visitag) in Reducing Re-conduction of Isolated Pulmonary Vein and Recurrence after Catheter Ablation for Atrial Fibrillation - Efficacy of Automated Ablation Annotation Algorithm(Visitag) in Reducing Re-conduction of Isolated Pulmonary Vein and Recurrence after Catheter Ablation for Atrial Fibrillation

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

JPRN

Registry ID

JPRN-UMIN000019555

Enrollment

150

Registered

2015-10-30

Start date

2015-11-01

Completion date

Unknown

Last updated

2026-06-29

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Atrial Fibrillation

Interventions

RF Ablation using CARTO system. Manual collection of RF ablation points by assistant. RF ablation was guided by an automated algorithm with predefined criteria of catheter stability range of motion

1.5mm ,catheter stability duration

5 seconds, and force over time (contact force

5g, time

25%). When this condition is satisfied, new tag appears. Tag size was 3mm and we intended to move catheter to next position to appear the new tag where was overlapped with the former tag. When force t

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: patients undergoing initial ablation for paroxysmal or persistent (duration < 5 year) atrial fibrillation

Exclusion criteria

Exclusion criteria: Patients with sustained atrial fibrillation episode 5 years or greater; Patients with left atrial size 50 mm or larger or left atrial volume 200ml or larger; Patients with valvular atrial fibrillation and a history of cardiac surgery; Patients age is < 20 years or 80 years or greater; Dialysis patients; Patients with heart failure (LVEF < 30% or NYHA class III or IV); Patients taking antiarrhythmic drugs before procedure; or Patients considered unsuitable for this study

Design outcomes

Primary

Measure	Time frame
recurrence of atrial fibrillation(1 year)	—

Secondary

Measure	Time frame
Spontaneous PV reconnection; Dormant conduction by ATP; duration of energy application ; total energy; procedure time; and complications associated with catheter ablation	—

Countries

Japan

Contacts

Public ContactNobuaki Tanaka

Sakurabashi Watanabe Hospital Cardiovascular center

nob-t@tj9.so-net.ne.jp06-6341-8655

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Jul 3, 2026