1 Department of Anesthesia and Intensive Care Medicine, Azienda Ospedaliera Santa Maria Delle Croci, AUSL Romagna, Viale Randi 5, 48121, Ravenna, Italy.
2 Department of Anesthesia and Intensive Care Medicine, Azienda Ospedaliera Santa Maria Delle Croci, AUSL Romagna, Viale Randi 5, 48121, Ravenna, Italy. vincenzo.desantis@auslromagna.it.