1 Department of Anesthesiology, Infanta Leonor University Hospital, Madrid, Spain; Fluid Therapy and Hemodynamic Monitoring Working Group of the Spanish Society of Anesthesiology and Critical Care, Madrid, Spain; Universidad Complutense de Madrid, Madrid, Spain. Electronic address: [email protected].
2 Fluid Therapy and Hemodynamic Monitoring Working Group of the Spanish Society of Anesthesiology and Critical Care, Madrid, Spain; Jerez de La Frontera University Hospital, Jerez de la Frontera, Spain.