Mechanisms Linking the Vein of Marshall to the Onset and Maintenance of Atrial Fibrillation

Arrhythmogenic Mechanisms of the Vein of Marshall in the Onset and Maintenance of Atrial Fibrillation - The Arrhythmogenic Role of the Vein of Marshall in Atrial Fibrillation

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

JPRN

Registry ID

JPRN-UMIN000055854

Enrollment

100

Registered

2024-11-01

Start date

2024-11-01

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

Induction and Evaluation of Marshall Vein-Left Atrium Reentry A 1.6Fr electrode catheter will be inserted into the vein of Marshall. Premature stimulation and burst stimulation will be delivered from

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: 1) Patients aged 18 years or older 2) Patients with atrial fibrillation 3) Patients undergoing their initial catheter ablation for atrial fibrillation 4) Patients who have provided written informed consent to participate in this study

Exclusion criteria

Exclusion criteria: 1) Patients with a history of open-heart surgery 2) Patients with impaired renal function (eGFR less than 30) 3) Patients with a contrast agent allergy 4) Patients for whom the use of contrast agents is deemed unsuitable by the physician

Design outcomes

Primary

Measure	Time frame
The primary outcome measure is the correlation between the recurrence of atrial fibrillation or atrial tachycardia after ablation and the electrophysiological findings of the vein of Marshall.	—

Countries

Japan

Contacts

Public ContactYosuke Nakatani

Gunma University Graduate School of Medicine Division of Non-Pharmacological Management of Cardiac Arrhythmias

yosuke.nakatani@gunma-u.ac.jp027-220-8145

Outcome results

None listed

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