Department of Intensive Care, Vall d'Hebron University Hospital, Barcelona, Spain. Shock, Organ Dysfunction and Resuscitation Research Group (SODIR), Vall d'Hebron Research Institute, Barcelona, Spain. Departament de Medicina, Universitat Autònoma de Barcelona, Barcelona, Spain. Institut National de la Santé et de la Recherche Médicale (INSERM) Unité Mixte de Recherche (UMRS) 1166, Institute of Cardiometabolism and Nutrition, Sorbonne Université, Paris, France. Service de Médecine Intensive-Réanimation, Institut de Cardiologie, Assistance Publique-Hôpitaux de Paris, Hôpital Pitié-Salpêtrière, Paris, France. ECMO Centre Karolinska, Karolinska Universitetssjukhuset, Stockholm, Sweden. Department of Physiology and Pharmacology, Karolinska Institutet, Stockholm, Sweden. Department of Intensive Care, São João Universitary Hospital Center, Porto, Portugal; and. Centro de Investigación Biomédica en Red (CIBER) de enfermedades respiratorias, CIBERES, Instituto de Salud Carlos III, Madrid, Spain.