Piotr Zasko1, Lukasz Szarpak2, Andrzej Kurowski1, Zenon Truszewski2, Lukasz Czyzewski3. 1. Department of Anesthesiology, Cardinal Wyszynski National Institute of Cardiology, Warsaw, Poland. 2. Department of Emergency Medicine, Medical University of Warsaw, Warsaw, Poland. 3. Department of Nephrologic Nursing, Medical University of Warsaw, Warsaw, Poland.