Pulmonary Embolism in Children With Mycoplasma Pneumoniae Pneumonia: Assessment of Risk Factors and Current...

Area of Science:

• Pediatric Pulmonology
• Infectious Diseases
• Cardiovascular Medicine

Background:

• Mycoplasma pneumoniae pneumonia (MPP) can lead to life-threatening pulmonary embolism (PE).
• Accurate risk stratification and diagnosis of PE in pediatric MPP patients are crucial.
• Existing PE prediction criteria, validated in adults, require evaluation in pediatric populations.

Purpose of the Study:

• To identify risk factors for PE in children with MPP.
• To assess the diagnostic accuracy of three adult-validated PE prediction criteria (WELLS, PERC, YEARS) in pediatric MPP patients.
• To develop a more accurate predictive model for PE in this specific population.

Main Methods:

• Retrospective analysis of 302 pediatric MPP patients who underwent CTPA for suspected PE.
• Evaluation of clinical characteristics and application of three PE pretest probability strategies.
• Univariate analysis, logistic regression, and ROC curve analysis to identify independent predictors and assess diagnostic accuracy.

Main Results:

• The YEARS criteria demonstrated higher diagnostic accuracy (sensitivity 96.7%, specificity 52.6%) compared to Wells and PERC rules.
• Independent risk factors for PE in pediatric MPP patients included days of fever before CTPA, d-dimer levels, and α-HBDH levels.
• A combined metric using fever duration, d-dimer, and α-HBDH showed superior predictive value (AUC 0.964).

Conclusions:

• Fever duration, d-dimer, and α-HBDH are significant predictors of PE in pediatric MPP patients.
• The YEARS criteria offer better diagnostic accuracy for PE in children with MPP compared to Wells and PERC rules.
• A novel combined metric incorporating fever duration, d-dimer, and α-HBDH provides a highly accurate tool for PE prediction in this cohort.