Anders Rostrup Nakstad1
, Christian Eek2
, Dag Aarhus3
, Anne Larsen4
and Kristina Hermann Haugaa2 
1
Department of Anesthesia and Air Ambulance Department, Oslo University Hospital - Ullevål, Oslo, Norway
2
Department of Cardiology, Oslo University Hospital - Rikshospitalet and University of Oslo, Oslo, Norway
3
Department of Anaesthesia, Vestre Viken HF - Drammen, Norway
4
Department of Internal Medicine, Vestre Viken HF - Drammen, Norway