Impact of Surround Flow Irrigation in Ablation Index-guided Pulmonary Vein Isolation: a Prospective Comparative Study on the Unexcitability during Ablation

Impact of Surround Flow Irrigation in Ablation Index-guided Pulmonary Vein Isolation: a Prospective Comparative Study on the Unexcitability during Ablation - Impact of Surround Flow Irrigation in Ablation Index-guided Pulmonary Vein Isolation: a Prospective Comparative Study on the Unexcitability during Ablation

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

JPRN

Registry ID

JPRN-UMIN000029499

Enrollment

Registered

2017-10-11

Start date

2017-11-01

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

Point-by-point ablation was performed during pacing by the ablation catheter at each 6 site along the left PVI line. The CF was adjusted to keep 10g. Radiofrequency (RF) energy at 30W was stopped imme

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: 1) ability and willing to give written informed consent 2) paroxysmal and non-paroxysmal atrial fibrillation

Exclusion criteria

Exclusion criteria: 1) age < 20 years 2) left ventricular ejection < 45% 3) left atrial diameter > 50 mm 4) significant valvular heart disease 5) reversible cause of AF 6) sustained or recurrent AF after the direct cardioversion 7) administration of amiodarone 8) intracardiac thrombus 9) inability to take anticoagulant

Design outcomes

Primary

Measure	Time frame
To investigate the impact of STSF, we compared the application time and AI for achieving unexcitability between STSF and ST ablation. Point-by-point ablation was performed during pacing by the ablation catheter at each 6 site along the left PVI line. The CF was adjusted to keep 10g. Radiofrequency (RF) energy at 30W was stopped immediately when the unexcitability to pace was achieved for three consecutive stimuli.	—

Measure

Time frame

To investigate the impact of STSF, we compared the application time and AI for achieving unexcitability between STSF and ST ablation. Point-by-point ablation was performed during pacing by the ablation catheter at each 6 site along the left PVI line. The CF was adjusted to keep 10g. Radiofrequency (RF) energy at 30W was stopped immediately when the unexcitability to pace was achieved for three consecutive stimuli.

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Countries

Japan

Contacts

Public ContactDaisuke Horiuchi

Department of Cardiology, Hirosaki University Graduate School of Medicine Advanced Management of Cardiac arrhythmias

horiuch@hirosaki-u.ac.jp81-172-39-5057

Outcome results

None listed

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