Prophylactic Anti-aRrhythmic Therapy With Amiodarone in Critically Ill Patients Admitted for an Out-of-hospital Cardiac Arrest With Initial Shockable Rhythm

To determine if prophylactic administration of amiodarone for 72 hours in critically ill patients admitted after an OHCA with shockable rhythm, with a confirmed or a presumed cardiac cause, decreases the incidence of a composite endpoint of 30-day (starting from inclusion) all-cause mortality and/or severe in-hospital ventricular arrhythmia recurrence (ventricular fibrillation and/or ventricular tachycardia requiring intervention including re-arrest)