Preventive amiodarone after out-of-hospital cardiac arrest with an initial shockable rhythm
Official title: Prophylactic Anti-aRrhythmic Therapy With Amiodarone in Critically Ill Patients Admitted for an Out-of-hospital Cardiac Arrest With Initial Shockable Rhythm.
Run by Versailles Hospital · NCT06835491 · Data updated 2026-11-12
This will try whether giving amiodarone for 72 hours to adults admitted to intensive care after an out-of-hospital cardiac arrest with a shockable rhythm reduces death or severe ventricular arrhythmia within 30 days.
Quick facts
| Phase | Phase 3 |
|---|---|
| Study type | Interventional |
| Ages | 18 Years and up |
| Sex | All |
| Enrollment | 674 (estimated) |
| Sponsor | Versailles Hospital Academic / other |
| Locations | 29 sites (Amiens and 28 other locations) |
| Status | Recruiting |
| Started | November 6, 2025 |
| Main results expected | January 15, 2027 |
| Study ends | March 15, 2027 |
| Registry record updated | December 23, 2025 |
| Trial ID | NCT06835491 on ClinicalTrials.gov |
Is this trial a fit for you?
✓Likely a good fit
Adults (≥18 years) admitted to ICU after an out-of-hospital cardiac arrest with an initial shockable rhythm, presumed or unknown cardiac cause, able to be screened within 6 hours of ROSC and with central venous access are ideal candidates.
✕Probably not a fit
Patients with a clear non-cardiac cause of arrest, those already requiring VA-ECMO, those with contraindications to amiodarone, or with preexisting indications for amiodarone are unlikely to benefit from the prophylactic approach.
A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.
What this trial studies
This Phase 3 interventional trial tests prophylactic intravenous amiodarone infusion for 72 hours in critically ill adults admitted to the ICU after an out-of-hospital cardiac arrest with an initial shockable rhythm and a presumed or unknown cardiac cause. The main outcome is a composite of 30-day all-cause mortality and/or severe in-hospital recurrence of ventricular fibrillation or ventricular tachycardia requiring intervention. Eligible patients must be screened and randomized within 6 hours of return of spontaneous circulation and have central venous access for continuous infusion. Key exclusions include extra-cardiac cause of arrest, existing indications or contraindications to amiodarone, need for VA-ECMO at admission, thyroid disease under treatment, and untreated conduction disorders.
Why it matters
Potential benefit: If successful, the approach could reduce early deaths and serious ventricular arrhythmia recurrences after out-of-hospital cardiac arrest.
How similar studies have gone: Amiodarone is established for treating ventricular arrhythmias during resuscitation, but prophylactic post-resuscitation use to prevent recurrence has limited large randomized Phase 3 evidence.
Who can join: the full rules
Show full inclusion / exclusion criteria
Inclusion Criteria: 1. Patient aged ≥ 18 years 2. Admitted in intensive care unit 3. Out-of-hospital cardiac arrest with initial shockable rhythm 4. Presumed cardiac or unknown cause 5. Delay between ROSC and screening for randomisation \< 6 hours 6. Informed consent from the patient or a surrogate or deferred consent 7. Affiliated to or benefiting from a social insurance Exclusion Criteria: 1. Cardiac arrest secondary to an extra-cardiac cause (suspected or confirmed) 2. Indication for amiodarone decided by the physician at ICU admission 3. No central venous catheter available for continuous infusion of amidoarone 4. Thyroid disease under treatment 5. History of cardiac conduction disorders, not treated by permanent pacemaker 6. Any contra indication to amiodarone treatment 7. Refractory ventricular arrhythmia or electrical storm 8. Need for veno-arterial extracorporeal membrane oxygenation (VA-ECMO) at admission 9. Known limitations in therapy and Do Not Resuscitate-order 10. Moribund patient due to pre-arrest history (estimated life expectancy \< 3 months) 11. Pregnant or breastfeeding women 12. Patient needing a nadolol treatment due to QT long syndrome or catecholaminergic polymorphic ventricular tachycardia 13. Patient with known pulmonary fibrosis 14. Patient with known interstitial lung disease
Where it's running
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Chu Angers
Angers, France Recruiting -
CH annecy genevois
Annecy, France Recruiting -
Ch Argenteuil
Argenteuil, France Recruiting -
CH Mondor
Aurillac, France Recruiting -
CHU Brest
Brest, France Recruiting -
CH Brive
Brive-la-Gaillarde, France Recruiting
Show 23 more locations
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Chi Nord Ardennes
Charleville-Mézières, France Recruiting -
Chsf
Corbeil-Essonnes, France Recruiting -
CHD vendée
La Roche-sur-Yon, France Recruiting -
CH la rochelle
La Rochelle, France Recruiting -
Hcl
Lyon, France Recruiting -
Ap Hm
Marseille, France Recruiting -
Hopital Cartier
Massy, France Recruiting -
Hoptial Mulhouse
Mulhouse, France Recruiting -
Clinique Ambroise Paré
Neuilly-sur-Seine, France Recruiting -
CHU Nice -MIR Archet
Nice, France Recruiting -
CHU Nice -MIR Pasteur
Nice, France Recruiting -
Chu Orléans
Orléans, France Recruiting -
CHU Cochin
Paris, France Recruiting -
Hopital saint joseph
Paris, France Recruiting -
CHU Poitiers
Poitiers, France Recruiting -
Chu Strasbourg
Strasbourg, France Recruiting -
CHI Toulon
Toulon, France Recruiting -
Chu Toulouse
Toulouse, France Recruiting -
CH Cotentin
Valognes, France Recruiting -
Chu Amiens
Amiens, France Not yet recruiting -
Chu Caen
Caen, France Not yet recruiting -
chi Gregoire
Montreuil, France Not yet recruiting -
CHU Nantes
Nantes, France Not yet recruiting
Study contacts
- Study coordinator: Sandrine Roux
- Email: sroux@ght78sud.fr
- Phone: 0139239777
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How to take part
- Review the eligibility criteria above with your treating physician.
- Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
- Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.