Lonneke A van Vught1,2, Maryse A Wiewel1,2, Arie J Hoogendijk1,2, Jos F Frencken3,4, Brendon P Scicluna1,2,5, Peter M C Klein Klouwenberg3,4,6, Aeilko H Zwinderman5, Rene Lutter7, Janneke Horn8, Marcus J Schultz8, Marc M J Bonten3,6, Olaf L Cremer4, Tom van der Poll1,2,9. 1. 1 Center for Experimental and Molecular Medicine. 2. 2 Center for Infection and Immunity. 3. 3 Department of Epidemiology, Julius Centre for Health Sciences and Primary Care. 4. 4 Department of Intensive Care Medicine, and. 5. 5 Department of Clinical Epidemiology and Biostatistics. 6. 6 Department of Medical Microbiology, University Medical Center Utrecht, Utrecht, the Netherlands. 7. 7 Department of Experimental Immunology and Respiratory Medicine. 8. 8 Department of Intensive Care, and. 9. 9 Division of Infectious Diseases, Academic Medical Center, University of Amsterdam, Amsterdam, the Netherlands; and.
Abstract
RATIONALE: Sepsis can be complicated by secondary infections. We explored the possibility that patients with sepsis developing a secondary infection while in the intensive care unit (ICU) display sustained inflammatory, vascular, and procoagulant responses. OBJECTIVES: To compare systemic proinflammatory host responses in patients with sepsis who acquire a new infection with those who do not. METHODS: Consecutive patients with sepsis with a length of ICU stay greater than 48 hours were prospectively analyzed for the development of ICU-acquired infections. Twenty host response biomarkers reflective of key pathways implicated in sepsis pathogenesis were measured during the first 4 days after ICU admission and at the day of an ICU-acquired infection or noninfectious complication. MEASUREMENTS AND MAIN RESULTS: Of 1,237 admissions for sepsis (1,089 patients), 178 (14.4%) admissions were complicated by ICU-acquired infections (at Day 10 [6-13], median with interquartile range). Patients who developed a secondary infection showed higher disease severity scores and higher mortality up to 1 year than those who did not. Analyses of biomarkers in patients who later went on to develop secondary infections revealed a more dysregulated host response during the first 4 days after admission, as reflected by enhanced inflammation, stronger endothelial cell activation, a more disturbed vascular integrity, and evidence for enhanced coagulation activation. Host response reactions were similar at the time of ICU-acquired infectious or noninfectious complications. CONCLUSIONS: Patients with sepsis who developed an ICU-acquired infection showed a more dysregulated proinflammatory and vascular host response during the first 4 days of ICU admission than those who did not develop a secondary infection.
RATIONALE: Sepsis can be complicated by secondary infections. We explored the possibility that patients with sepsis developing a secondary infection while in the intensive care unit (ICU) display sustained inflammatory, vascular, and procoagulant responses. OBJECTIVES: To compare systemic proinflammatory host responses in patients with sepsis who acquire a new infection with those who do not. METHODS: Consecutive patients with sepsis with a length of ICU stay greater than 48 hours were prospectively analyzed for the development of ICU-acquired infections. Twenty host response biomarkers reflective of key pathways implicated in sepsis pathogenesis were measured during the first 4 days after ICU admission and at the day of an ICU-acquired infection or noninfectious complication. MEASUREMENTS AND MAIN RESULTS: Of 1,237 admissions for sepsis (1,089 patients), 178 (14.4%) admissions were complicated by ICU-acquired infections (at Day 10 [6-13], median with interquartile range). Patients who developed a secondary infection showed higher disease severity scores and higher mortality up to 1 year than those who did not. Analyses of biomarkers in patients who later went on to develop secondary infections revealed a more dysregulated host response during the first 4 days after admission, as reflected by enhanced inflammation, stronger endothelial cell activation, a more disturbed vascular integrity, and evidence for enhanced coagulation activation. Host response reactions were similar at the time of ICU-acquired infectious or noninfectious complications. CONCLUSIONS:Patients with sepsis who developed an ICU-acquired infection showed a more dysregulated proinflammatory and vascular host response during the first 4 days of ICU admission than those who did not develop a secondary infection.
Entities:
Keywords:
ICU-acquired infection; biomarker; host response; intensive care unit; sepsis
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