Abstract
Objectives
Systemic rheumatic diseases (SRDs) are a group of inflammatory disorders that can need intensive care unit (ICU) admission during a flare-up, requiring administration of immunosuppressants. We undertook this study to determine the frequency, outcome, and occurrence associated factors of infections in flare-up SRD patients receiving immunosuppressant.
Methods
Monocenter, a retrospective study including SRD patients admitted to ICU for a flare-up requiring immunosuppressant from 2004 to 2019. The primary endpoint was in-ICU-acquired infections.
Results
Ninety-eight patients (female/male ratio: 1.6; mean age at admission: 39.5 ± 17.4 years) were admitted to the ICU for a SRD flare-up, inaugural in 61.2% cases. A specific treatment was given to every patient: corticosteroids 100%, cyclophosphamide 45.9%, plasma exchange 46.9%. Ninety-five infections occurred in 35 (36%) patients mainly pneumonias. The overall in-hospital mortality was 17.3%, and 46% of patients with a nosocomial infection died during their ICU stay. The logistic regression multivariable model retained renal replacement therapy and mechanical ventilation as independent predictors of infection.
Conclusion
In-ICU-acquired infection in SRD flare-up is a frequent event associated with organ failures but not with in-ICU use of immunosuppressants. These data suggest that the fear of infection should not withhold a careful in-ICU use of immunosuppressive drugs.
Key Points • In-ICU infections are frequent in flare-up systemic rheumatic disease patients. • Infections are associated with increased mortality. • Cyclophosphamide given in ICU was not independently associated with infection. • Severe neutropenia occurred in 27% of patients receiving cyclophosphamide in ICU. |
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Abbreviations
- CI:
-
Confidence interval
- ECMO:
-
Extracorporeal membrane oxygenation
- ELSO:
-
Extracorporeal Life Support Organization
- ICU:
-
Intensive care unit
- IDSA:
-
Infection Disease Society of America
- IQR:
-
25th–75th percentile interquartile range
- OR:
-
Odd ratio
- SAPS:
-
Simplified Acute Physiology Score
- SOFA:
-
Sequential Organ-Failure Assessment
- SRDs:
-
Systemic Rheumatic Diseases
- VA-ECMO:
-
Venoarterial ECMO
- VV-ECMO:
-
Venovenous ECMO
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- F. A., P. B., M. Pd. C. contributed to study design, data collection, statistical analysis conduction and interpretation, manuscript writing, and final approval.
- A. M., C. E. L., Z. A., A. C. contributed to study design, statistical analysis interpretation, manuscript writing, and final approval.
- All other authors contributed to the data collection.
- M. Pd. C. is the guarantor of this study.
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The database is registered with the “Commission Nationale de l’Informatique et des Libertés” (2217847v0). In accordance with the ethical standards of our hospital’s institutional review board, the Committee for the Protection of Human Subjects, and French law, written informed consent was not needed for demographic, physiological, and hospital-outcome data analyses because this observational study did not modify existing diagnostic or therapeutic strategies; however, patients were informed of their inclusion in the study.
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Supplementary information
ESM 1.
Box-Plot results of neutrophil, lymphocyte, platelet counts and hemoglobin level on induction-day and the lowest in-ICU value after induction with comparison according cyclophosphamide administration. (PDF 431 kb)
ESM 2.
Kaplan-Meier estimated probability of infection-free survival after in-IC immunosuppressive treatments administration in the 98 systemic rheumatic disease patients’ with comparison according the number of organ failure treatments on induction-day. Legend: Organ failure treatments: mechanical ventilation, inotropes or vasopressive drugs, renal replacement therapy, ECMO (venovenous or venoarterial). Group 1: no organ failure treatment. Group 2: one or two organ failure treatments. Group 3: three or four organ failure treatments. (PDF 283 kb)
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Assan, F., Bay, P., Mathian, A. et al. In-ICU-acquired infections in flare-up systemic rheumatic disease patients receiving immunosuppressant. Clin Rheumatol 41, 2845–2854 (2022). https://doi.org/10.1007/s10067-022-06197-w
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DOI: https://doi.org/10.1007/s10067-022-06197-w