1 Anaesthesia and Intensive Care, Fondazione IRCCS Policlinico San Matteo, Anestesia e Rianimazione 1, DEA Piano -1, Viale Golgi 19, 27100 Pavia, Italy.
2 Division of Cardiology, AOU Città della Salute e della Scienza di Torino, Torino, Italy.
3 Department of Cardiac Surgery, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy.
4 Department of Clinical-Surgical, Diagnostic and Paediatric Sciences, Unit of Anaesthesia and Intensive Care, University of Pavia, Pavia, Italy.