Reduced Platelets Associated with All-Cause Mortality in the Pediatric Intensive Care Unit

Area of Science:

• Hematology
• Pediatric Critical Care
• Clinical Research

Background:

• Platelets play vital roles in hemostasis, inflammation, and immunity.
• Critically ill children in the Pediatric Intensive Care Unit (PICU) often experience altered platelet counts and function.
• These alterations significantly impact disease severity and treatment strategies.

Purpose of the Study:

• To investigate the association between platelet count and its derived parameters with all-cause mortality in pediatric intensive care.
• To determine if platelet count is an independent risk factor for mortality in critically ill children.

Main Methods:

• Analysis of data from 11,625 children admitted to the PICU.
• Utilized adjusted smoothing spline plots, subgroup analysis, and segmented multivariate logistic regression.
• Adjusted for confounders including inflammation, nutrition, and liver function.

Main Results:

• A total of 677 (5.82%) children died during the study period.
• A negative association was observed between platelet count and all-cause mortality.
• Each 100 × 10^9/L increase in platelets reduced the risk of death by 17% (adjusted OR = 0.83).
• Sensitivity analyses confirmed the stability of this association across different subgroups.

Conclusions:

• Platelet reduction is an independent risk factor for all-cause mortality in the PICU.
• Maintaining adequate platelet counts may be crucial for improving survival rates in critically ill children.
• Further research into platelet-targeted therapies in pediatric critical care is warranted.