Ventricular fibrillation/tachycardia, pulseless electrical activity and asystole are equally common initial rhythms in in-hospital cardiac arrest due to cardiac reasons

Heidi Hellevuo1,∗, Marko Sainio2, Klaus T. Olkkola3, Jyrki Tenhunen4, Sanna Hoppu5 1 Critical Care Medicine Research Group, Department of Intensive Care Medicine, Tampere University Hospital and University of Tampere, Tampere, Finland 2 Emergency Medical Services, Department of Emergency Medicine, Turku University Hospital, Turku, Finland 3 Department of Anaesthesiology, Intensive Care, Emergency Care and Pain Medicine, Helsinki University Central Hospital and University of Helsinki, Helsinki, Finland 4 Department of Surgical Sciences, Anaesthesiology and Intensive Care, Uppsala University, Uppsala, Sweden 5 Emergency Medical Services, Department of Emergency Medicine, Tampere University Hospital, Tampere, Finland