1 Department of Anaesthesiology, Intensive Therapy and Emergency Medicine, Silesian Centre for Heart Diseases, Medical University of Silesia, Curie-Skłodowskiej 9 Str, 41-800, Zabrze, Poland. pknapik@sum.edu.pl.
2 Department of Anaesthesiology, Intensive Therapy and Emergency Medicine, Silesian Centre for Heart Diseases, Medical University of Silesia, Curie-Skłodowskiej 9 Str, 41-800, Zabrze, Poland.
3 Department of Pneumonology, School of Medicine in Katowice, Medical University of Silesia, Katowice, Poland.
4 Students' Scientific Society, Department of Cardiac Anaesthesia and Intensive Care, Medical University of Silesia, Katowice, Poland.
5 Department of Science and New Technologies, Silesian Centre for Heart Diseases, Zabrze, Poland.