The brain–lung–brain axis

)Division of Neurosciences Critical Care Medicine,Johns Hopkins Hospital, Meyer 8-140, 600 N Wolfe St,Baltimore, MD 21287, USAe-mail: rstevens@jhmi.eduTel.: ?1-410-9557481Fax: ?1-410-6147903L. PuybassetNeuro-re´animation Chirurgicale Babinski,De´partement d’Anesthe´sie-Re´animation,Groupe Hospitalier Pitie´-Salpeˆtrie`re,Universite´ Pierre et Marie Curie, Paris, France