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Author(s): Guillaume Dumas [sup.1], Yaseen M. Arabi [sup.2] [sup.3] [sup.4], Raquel Bartz [sup.5], Otavio Ranzani [sup.6] [sup.7], Franziska Scheibe [sup.8] [sup.9], Michaël Darmon [sup.10], Julie Helms [sup.11] Author Affiliations: (1) [...], Autoimmune diseases encompass a broad spectrum of disorders characterized by disturbed immunoregulation leading to the development of specific autoantibodies, resulting in inflammation and multiple organ involvement. A distinction should be made between connective tissue diseases (mainly systemic lupus erythematosus, systemic scleroderma, inflammatory muscle diseases, and rheumatoid arthritis) and vasculitides (mainly small-vessel vasculitis such as antineutrophil cytoplasmic antibody-associated vasculitis and immune-complex mediated vasculitis). Admission of patients with autoimmune diseases to the intensive care unit (ICU) is often triggered by disease flare-ups, infections, and organ failure and is associated with high mortality rates. Management of these patients is complex, including prompt disease identification, immunosuppressive treatment initiation, and life-sustaining therapies, and requires multi-disciplinary involvement. Data about autoimmune diseases in the ICU are limited and there is a need for multicenter, international collaboration to improve patients' diagnosis, management, and outcomes. The objective of this narrative review is to summarize the epidemiology, clinical features, and selected management of severe systemic autoimmune diseases.

Author(s): Emmanuelle Cambau [sup.1], Michael Bauer [sup.2] Author Affiliations: (1) Department of Bacteriology, Lariboisiere Hospital, AP-HP, Inserm UMR1137 IAME, Univ Paris Diderot, , Sorbonne Paris Cité, Paris, France (2) grid.275559.9, [...]