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Cumulative survival at 180 days in out-of-hospital cardiac arrest patients of the ARREST and PRAGUE-OHCA randomised trials. Panel A: in the whole study population. Panel B: in patients presenting with shockable rhythms. Panel C: in patients with the time of cardiopulmonary resuscitation ≥45 min. Legend: CPR, cardiopulmonary resuscitation; VF, ventricular fibrillation.
