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Published on: November 8, 2024
Platelet role in the prediction of MIS-C severity
Ausra Snipaitiene1,2, Aurelija Sirataviciene1,2, Leila Varoneckaite1,2
1Pediatric Department, Medical Academy, Lithuanian University of Health Sciences, Kaunas, Lithuania.
Insights
Platelet (PLT) count and indices, along with routine biomarkers like CBC and CRP, can significantly improve the prediction of Multisystem Inflammatory Syndrome in Children (MIS-C) severity. This finding highlights the role of platelets in MIS-C pathogenesis.
Area of Science:
- Pediatric critical care medicine
- Hematology
- Infectious diseases
Background:
- Multisystem Inflammatory Syndrome in Children (MIS-C) is a serious COVID-19 complication.
- MIS-C diagnosis and severity prediction remain challenging.
- Platelets (PLTs) are increasingly recognized for their role in COVID-19 and related syndromes.
Purpose of the Study:
- To investigate the clinical significance of platelet count and indices in predicting MIS-C severity.
- To assess the predictive value of platelet parameters in conjunction with routine biomarkers.
Main Methods:
- Retrospective single-center study of 43 MIS-C patients over two years.
- MIS-C severity assessed using a composite severity score.
- Analysis of complete blood count (CBC), C-reactive protein (CRP), and various platelet indices.
Main Results:
- Shock was the only clinical sign significantly associated with severe MIS-C (p=0.041).
- Routine biomarkers (CBC, CRP) were significant predictors of MIS-C severity.
- Individual platelet indices did not predict severity, but their combination with platelet count showed predictive potential.
Conclusions:
- Platelets play a crucial role in MIS-C pathogenesis and severity.
- Combining platelet count and indices with routine biomarkers enhances MIS-C severity prediction.
- This approach offers a more robust tool for managing MIS-C patients.
Introduction:
Multisystem inflammatory syndrome in children (MIS-C) has been reported as one of the cytokine storm syndromes associated with COVID-19. Despite the several proposed diagnostic criteria, MIS-C remains a diagnostic and clinical challenge. Recent studies have demonstrated that platelets (PLTs) play a crucial role in COVID-19 infection and its prognosis. This study aimed to investigate the clinical importance of PLT count and PLT indices in predicting MIS-C severity in children.
Patients And Methods:
We conducted a retrospective single-center study at our university hospital. A total of 43 patients diagnosed with MIS-C during a 2-year period (from October 2020 to October 2022) were included in the study. MIS-C severity was evaluated according to the composite severity score.
Results:
Half of the patients were treated in the pediatric intensive care unit. No single clinical sign was associated with a severe condition, except for shock (p = 0.041). All the routine biomarkers, such as complete blood count (CBC) and C-reactive protein (CRP), used for MIS-C diagnosis were significant in predicting MIS-C severity. Single PLT parameters, such as mean PLT volume, plateletcrit, or PLT distribution width, did not differ between the severity groups. However, we found that a combination of PLT count and the previously mentioned PLT indices had the potential to predict MIS-C severity.
Conclusions:
Our study emphasizes the importance of PLT in MIS-C pathogenesis and severity. It revealed that together with routine biomarkers (e.g., CBC and CRP), it could highly improve the prediction of MIS-C severity.
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