Jean-Louis Teboul, MD, PhD is Professor of Therapeutics and Critical Care Medicine, at the University Paris-South in France. He exerts his clinical activity at the Medical ICU of the Bicêtre University Hospital (Assistance-Publique Hôpitaux de Paris). His research interests are the following: heart-lung interactions, cardiovascular performance, regional blood flow assessment, tissue oxygenation, haemodynamic monitoring, and assessment of volume status in critically ill patients. He proposed and developed new tests to assess fluid responsiveness such as Pulse Pressure Variation and Passive Leg Raising, which are now used everywhere around the world. He has 213 articles (referenced in Pubmed) and around 126 book chapters/didactic articles, almost of them in the field of haemodynamics. He gave 790 invited lectures including 618 in international conferences. He is currently the Editor-in-Chief of Annals of Intensive Care. He received in 2007 the Honorary Fellow Honor Award of the American College of Chest Physicians.