title: Invited Commentary.
authors.affiliation: Department of Cardiothoracic and Vascular Anesthesia and ICU, IRCCS Policlinico San Donato, Via Morandi 30, San Donato Milanese, Milan, Italy. Electronic address: cardioanestesia@virgilio.it.
authors.forename: Marco
authors.initials: M
authors.lastname: Ranucci