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Effect of H2 inhalation therapy on early recurrence after atrial fibrillation ablation. Multicenter, open-label, randomized phase II controlled trial.

Status
Not yet recruiting
Phases
Phase 2
Study type
Interventional
Source
EU CTIS
Registry ID
CTIS2024-520131-33-00
Enrollment
136
Registered
2026-02-25
Start date
Unknown
Completion date
Unknown
Last updated
2026-02-25

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

Conditions

atrial fibrillation

Brief summary

The primary endpoint is binary and composite, defined as: - The absence of early recurrence during the blanking period (3 months post-ablation), defined as any episode of AF, atrial flutter, or atrial tachycardia lasting at least 30 seconds AND - Improvement in quality of life defined as a decrease in the AFEQT (Atrial Fibrillation Effect on Quality of Life) score of at least 5 points (72) between D0 and M3.

Detailed description

Number of hospitalizations or electrical cardioversions or drug-induced cardioversions during the blanking period, Late recurrence (> 3 months and up to 12 months after ablation), Variation in blood concentration of inflammation markers (GB, CRPus, and IL-6) between 24 hours pre-ablation and 24–48 hours post-ablation, Collection of adverse events that will be described and graded using the Common Terminology Criteria for Adverse Events v5.0 (CTCAE) terminology., Customized questionnaire on patient acceptance of hydrogen therapy treatment upon admission to the hospital (part 1) and upon discontinuation of hydrogen therapy (part 2), Customized hetero-questionnaire on healthcare providers' acceptance of hydrogen therapy treatment

Interventions

DRUGMélange gazeux H2/ N2 3
DRUG6%/96
DRUG4%

Sponsors

Centre Hospitalier Universitaire Grenoble Alpes
Lead SponsorOTHER

Eligibility

Sex/Gender
All
Age
18 Years to No maximum

Design outcomes

Primary

MeasureTime frame
The primary endpoint is binary and composite, defined as: - The absence of early recurrence during the blanking period (3 months post-ablation), defined as any episode of AF, atrial flutter, or atrial tachycardia lasting at least 30 seconds AND - Improvement in quality of life defined as a decrease in the AFEQT (Atrial Fibrillation Effect on Quality of Life) score of at least 5 points (72) between D0 and M3.

Secondary

MeasureTime frame
Number of hospitalizations or electrical cardioversions or drug-induced cardioversions during the blanking period, Late recurrence (> 3 months and up to 12 months after ablation), Variation in blood concentration of inflammation markers (GB, CRPus, and IL-6) between 24 hours pre-ablation and 24–48 hours post-ablation, Collection of adverse events that will be described and graded using the Common Terminology Criteria for Adverse Events v5.0 (CTCAE) terminology., Customized questionnaire on patient acceptance of hydrogen therapy treatment upon admission to the hospital (part 1) and upon discontinuation of hydrogen therapy (part 2), Customized hetero-questionnaire on healthcare providers' acceptance of hydrogen therapy treatment

Outcome results

None listed

Source: EU CTIS · Data processed: Feb 26, 2026