[1] Fdn IRCCS Policlin San Matteo, Anaesthesia & Intens Care, Anestesia & Rianimaz 1, DEA Piano 1,Viale Golgi 19, I-27100 Pavia, Italy
[2] AOU Citta Salute & Sci Torino, Div Cardiol, Turin, Italy
[3] Fdn IRCCS Policlin San Matteo, Dept Cardiac Surg, Pavia, Italy
[4] Univ Pavia, Unit Anaesthesia & Intens Care, Dept Clin Surg Diagnost & Paediat Sci, Pavia, Italy