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Extracorporeal blood purification with Oxiris® filter in critically ill patients with COVID-19 requiring continuous renal replacement therapy

Introduction: Severe COVID-19 is associated with a dysregulated immune response that usually leads to cytokine release syndrome. This study aimed to compare the use of extracorporeal blood purification therapy (Oxiris®) versus standard continuous renal replacement therapy (CRRT) in critically-ill pa...

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Bibliographic Details
Published in:International journal of artificial organs 2023-12, Vol.46 (12), p.629-635
Main Authors: Abdelaty, Mohamed, Mohamed, Adham, Saad, Mohamed O, Mitwally, Hassan, Alkadi, Mohamad M, Hashim, Ahmed, Al Malki, Hassan, Ali, Husain S, Mohamed, Ahmed Soliman, Mustafa, Emad, Alalawi, Abdulaziz, Elshafei, Moustafa, Othman, Muftah, Khatib, Mohamad, Ibrahim, Abdul-Salam
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Language:English
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Summary:Introduction: Severe COVID-19 is associated with a dysregulated immune response that usually leads to cytokine release syndrome. This study aimed to compare the use of extracorporeal blood purification therapy (Oxiris®) versus standard continuous renal replacement therapy (CRRT) in critically-ill patients with severe COVID-19. Methods: This was a national, multicenter, retrospective study of patients with COVID-19 admitted to the intensive care unit (ICU) between March and October 2020 who required CRRT. Patients were categorized into two groups: Oxiris® CRRT and standard CRRT. The primary outcome was the number of patients alive and ventilator-free at 30-days post-CRRT treatment. Key secondary endpoints included change in inflammatory markers, Sequential Organ Failure Assessment (SOFA) scores, and PaO2/FiO2 ratio at 24- and 72-h post Oxiris® initiation. Results: Thirty-five patients received Oxiris® CRRT and 23 patients received standard CRRT. The primary outcome was 31.4% in the Oxiris® group versus 4.3% in the standard CRRT group (adjusted odds ratio 5.97, 95% confidence interval [CI], 0.64–55.6; p = 0.117). In the Oxiris® group, interleukin-6 (IL-6) concentrations significantly decreased at 24 and 72-h (p = 0.033) and PaO2/FiO2 ratio significantly increased at 24 and 72 h after Oxiris® initiation (p = 0.001). There was no significant change in SOFA scores at 24- and 72-h after Oxiris® initiation. Conclusion: The number of patients alive and ventilator-free at 30-days was higher in the Oxiris® group than that in the standard CRRT group; however, the difference did not reach statistical significance after adjusting for the baseline severity of illness. There was a significant reduction in IL-6 and significant improvement in PaO2/FiO2 ratio after Oxiris® CRRT initiation.
ISSN:0391-3988
1724-6040
DOI:10.1177/03913988231207716