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Therapeutic Plasma Exchange in Children With Thrombocytopenia-Associated Multiple Organ Failure: The
James D Fortenberry1, Trung Nguyen2, Jocelyn R Grunwell1
1Department of Pediatrics, Emory University School of Medicine, Children's Healthcare of Atlanta at Egleston, Atlanta, GA.
Insights
Therapeutic plasma exchange (TPE) may improve organ dysfunction and reduce 28-day mortality in children with sepsis-induced thrombocytopenia-associated multiple organ failure. Further research is needed to confirm these findings.
Area of Science:
- Pediatric critical care medicine
- Hematology
- Intensive care medicine
Background:
- Sepsis-induced thrombocytopenia-associated multiple organ failure (TA-MOF) presents a significant challenge in pediatric intensive care units (PICUs).
- Limited evidence exists regarding the efficacy of therapeutic plasma exchange (TPE) in improving outcomes for children with TA-MOF.
Purpose of the Study:
- To compare the resolution of organ dysfunction, 28-day mortality, and biochemical markers in children with TA-MOF who received TPE versus those who did not.
- To evaluate the impact of TPE on pediatric organ dysfunction scores and mortality rates.
Main Methods:
- An observational longitudinal cohort study was conducted across nine U.S. PICUs.
- Eighty-one children diagnosed with sepsis-induced TA-MOF were included in the analysis.
- Multivariate regression with propensity score weighting was used to model 28-day mortality and adjust for confounding factors.
Main Results:
- Children treated with TPE showed a significant decline in Pediatric Logistic Organ Dysfunction (PLOD) scores by day 4 compared to the control group.
- TPE use was associated with a reduced 28-day all-cause mortality (adjusted relative risk, 0.45; 95% CI, 0.23-0.90).
- Propensity score weighting analysis also indicated a significant reduction in 28-day mortality with TPE (adjusted relative risk, 0.46; 95% CI, 0.22-0.97).
Conclusions:
- Therapeutic plasma exchange (TPE) use in children with thrombocytopenia-associated multiple organ failure (TA-MOF) is associated with improved organ dysfunction resolution.
- TPE treatment was linked to lower 28-day all-cause mortality in this pediatric cohort.
- A multicenter randomized clinical trial is recommended to establish a definitive causal relationship between TPE and improved outcomes in TA-MOF.
Objective:
The objective was to compare the resolution of organ dysfunction, 28-day mortality, and biochemical markers in children with thrombocytopenia-associated multiple organ failure who received therapeutic plasma exchange versus no therapeutic plasma exchange.
Design:
Observational longitudinal cohort study.
Setting:
Nine U.S. PICUs.
Patients:
Eighty-one children with sepsis-induced thrombocytopenia-associated multiple organ failure.
Interventions:
Therapeutic plasma exchange.
Measurements And Main Results:
Adjusted relative risk for 28-day mortality was modeled using standard multivariate regression with propensity score weighting to reduce covariate confounding. Change from baseline Pediatric Logistic Organ Dysfunction scores between therapeutic plasma exchange and no therapeutic plasma exchange differed in temporal pattern during the first week (p = 0.009). By day 4, mean Pediatric Logistic Organ Dysfunction score declined by 7.9 points (95% CI, -10.8 to -5.1) in the therapeutic plasma exchange-treated group compared with no change with no therapeutic plasma exchange. Use of therapeutic plasma exchange was associated with reduced 28-day mortality by multivariate analysis (adjusted relative risk, 0.45; 95% CI, 0.23-0.90; p = 0.02) and by propensity score weighting (adjusted relative risk, 0.46; 95% CI, 0.22-0.97; p = 0.04).
Conclusions:
Therapeutic plasma exchange use in thrombocytopenia-associated multiple organ failure was associated with a decrease in organ dysfunction. After accounting for several risk factors, 28-day all-cause mortality was lower in children treated with therapeutic plasma exchange compared with those receiving no therapeutic plasma exchange. A multicenter randomized clinical trial is necessary to determine a causal relationship.
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