A microfluidic assay demonstrated significantly lower platelet deposition in pediatric trauma patients compared to healthy controls (1.18 vs. 3.06 MFI fold change; p<0.0001).
Observational (n=28)
No
Does a microfluidic assay detect post-traumatic platelet dysfunction in pediatric trauma patients compared to healthy controls?
A microfluidic assay detected significant post-traumatic platelet dysfunction in pediatric trauma patients despite normal conventional coagulation tests.
Absolute Event Rate: 1.18% vs 3.06%
p-value: p=<0.0001
ABSTRACTBackground Existing clinical coagulation assays are inadequate to evaluate post-traumatic platelet dysfunction in children. Objectives To elucidate changes in flow-dependent platelet function following injury in children using a microfluidic assay. Methods We enrolled 18 children who presented as highest acuity trauma activation and 10 healthy children at an academic pediatric center. For control cohort, outpatient blood samples were collected, and for the trauma cohort, blood was collected in the trauma bay for conventional coagulation tests, thromboelastography (TEG), von Willebrand Factor (VWF) A1 domain activity, and a microfluidic assay using a stenotic channel (shear rate=3500s-1). Results The trauma cohort characteristics were 67% male, median (IQR) age of 6 years (4-12), median (IQR) injury severity score of 17 (9-26), 78% blunt mechanism. In total, 50% required blood transfusion and 11% (2/18) died. While TEG Maximum Amplitude (59.9±6.1 mm) and platelet counts (306.3±111.1×103 cells/μL) were within normal limits, the microfluidic assay revealed significantly lower platelet deposition in the trauma cohort versus control cohort (1.18±0.25 vs. 3.06±0.82 mean fluorescence intensity (MFI) fold change; p2Conclusion Post-traumatic platelet dysfunction was observed in a pediatric trauma cohort utilizing a microfluidic assay. Further study is needed to understand the underlying mechanisms and significance of post-traumatic platelet dysfunction in children.
Kar et al. (Fri,) conducted a observational in Pediatric trauma (n=28). Microfluidic assay vs. Healthy children was evaluated on Platelet deposition (mean fluorescence intensity fold change) (p=<0.0001). A microfluidic assay demonstrated significantly lower platelet deposition in pediatric trauma patients compared to healthy controls (1.18 vs. 3.06 MFI fold change; p<0.0001).