1 Department of Cardiology, Heart Institute (InCor), Hospital das Clinicas da Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil Surgical Intensive Care Unit and Department of Anesthesiology, Heart Institute (InCor), Hospital das Clinicas da Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil Department of Anesthesia and Intensive Care, IRCCS San Raffaele Scientific Institute and Vita-Salute San Raffaele University, Milan, Italy.