Predicting Bloodstream Infection in Pediatric Post-Transfusion Febrile Neutropenia: Development of a Simple Bedside...

Area of Science:

• Pediatric Oncology
• Infectious Diseases
• Clinical Diagnostics

Background:

• Children undergoing chemotherapy are vulnerable to infections, with bloodstream infections (BSI) being a significant cause of morbidity in febrile neutropenia.
• Post-transfusion fever in these patients presents a diagnostic challenge, as it can mimic early BSI.

Purpose of the Study:

• To develop and internally validate a simple bedside score for predicting BSI in children presenting to the emergency department (ED) with post-transfusion fever.
• To aid in the early risk stratification of bloodstream infections in immunocompromised pediatric patients.

Main Methods:

• A retrospective diagnostic prediction study was conducted at a tertiary children's hospital.
• Data from 287 eligible encounters of children (≤18 years) with malignancy, chemotherapy, neutropenia, and post-transfusion fever were analyzed.
• A multivariable logistic regression model using temperature, absolute neutrophil count (ANC), C-reactive protein (CRP), and transfusion-to-ED interval was developed to create a 0-5 point bedside score.

Main Results:

• The derived bedside score demonstrated strong predictive performance with an Area Under the Curve (AUC) of 0.84.
• A score cutoff of ≥2 yielded a sensitivity of 97.4% and a negative predictive value of 98.8% for BSI.
• The score effectively stratified BSI risk, misclassifying only one BSI case as low risk at this cutoff.

Conclusions:

• A simple 0-5 point bedside score utilizing temperature, ANC, CRP, and transfusion-to-ED interval can effectively stratify BSI risk in children with post-transfusion fever.
• This score offers a valuable tool for early risk assessment in this vulnerable pediatric population.
• Further prospective multicenter validation is recommended prior to widespread clinical implementation.