[1] Univ Hosp Padua, Dept Cardiac Thorac & Vasc Sci, Cardiol Clin, I-35128 Padua, Italy
[2] Univ Hosp Padua, Dept Med, Anaesthesia & Intens Care Inst, I-35128 Padua, Italy
[3] Univ Hosp Padua, Emergency Dept, I-35128 Padua, Italy
[4] S Valentino Hosp, Anaesthesia & Intens Care Unit, I-31044 Treviso, Italy
[5] S Giovanni Bosco Hosp, ASL 4, Intens Care Unit, I-10154 Turin, Italy