Nicolas Nesseler1, James T Ross2, Yannick Mallédant3. 1. Intensive Care Unit, Anesthesia and Critical Care Department, Pontchaillou University Hospital, Rennes 35033, France. Electronic address: nicolas.nesseler@chu-rennes.fr. 2. Department of Surgery, University of California, San Francisco, CA, USA. 3. Intensive Care Unit, Anesthesia and Critical Care Department, Pontchaillou University Hospital, Rennes 35033, France.