1 Department of Anesthesia and Intensive Care Units, Humanitas Clinical and Research Hospital, IRCCS, Milan, Italy.
2 Echocardiography Unit, Humanitas Clinical and Research Hospital, IRCCS, Milan, Italy.
3 Department of Anesthesia and Intensive Care Units, Humanitas Clinical and Research Hospital, IRCCS, Milan, Italy; Humanitas University, Department of Biomedical Science, Milan, Italy.