Factors associated with pulmonary embolism in children with refractory Mycoplasma pneumoniae pneumonia and elevated D-dimer - Report - MDSpire

Factors associated with pulmonary embolism in children with refractory Mycoplasma pneumoniae pneumonia and elevated D-dimer

  • By

  • Geng Wang

  • Luanjie Yao

  • Bao Tie

  • Muguoer Wang

  • Xuemei Bai

  • Jing Li

  • Yong Feng

  • Zhaorui Yang

  • Haojing Tang

  • Li Chen

  • Si Liu

  • Bing Dai

  • Yunxiao Shang

  • Jichun Wang

  • Ning Chen

  • June 25, 2026

  • 0 min

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Clinical Report: Identifying Risk Factors for Pulmonary Embolism in Pediatric Patients

Overview

This study identifies key factors associated with pulmonary embolism (PE) in children suffering from refractory Mycoplasma pneumoniae pneumonia (RMPP) and elevated D-dimer levels. Notably, 45% of the studied children were diagnosed with PE.

Background

Pulmonary embolism is a serious complication of refractory Mycoplasma pneumoniae pneumonia in pediatric patients, often leading to delayed diagnosis due to nonspecific symptoms. Understanding the risk factors associated with PE is crucial for timely intervention and management in this vulnerable population. Elevated D-dimer levels, while useful for ruling out PE, can also complicate the clinical picture due to their association with various conditions.

Data Highlights

CharacteristicPE Group (n=49)Non-PE Group (n=60)
Neutrophil CountHigherLower
Admission D-dimer LevelsHigherLower
Simultaneous Positivity for LAC and ANAMore FrequentLess Frequent
Left Lower Lobe ConsolidationMore FrequentLess Frequent

Key Findings

  • 45% of children with RMPP were diagnosed with pulmonary embolism.
  • Higher neutrophil counts were independently associated with PE (OR, 1.221).
  • Log2(admission D-dimer/500 μg/L) was significantly associated with PE (OR, 2.664).
  • Simultaneous positivity for lupus anticoagulant and antinuclear antibodies was more frequent in the PE group (P = 0.006).
  • Left lower lobe consolidation was significantly associated with PE (OR, 5.016).

Clinical Implications

Clinicians should consider elevated neutrophil counts, D-dimer levels, and specific antibody positivity when assessing children with RMPP for potential pulmonary embolism. Early identification of these risk factors may facilitate timely diagnosis and management.

Conclusion

The study highlights specific clinical indicators in identifying pulmonary embolism among pediatric patients with refractory Mycoplasma pneumoniae pneumonia.

Related Resources & Content

  1. Frontiers in Pediatrics, 2026 -- Clinical Features and Risk Factors of Plastic Bronchitis in Mycoplasma pneumoniae Pneumonia Children
  2. Frontiers in Pediatrics, 2026 -- Clinical characteristics, predictive factors, and therapeutic outcomes of mycoplasma pneumoniae pneumonia with pleural effusion in children
  3. Frontiers in Immunology, 2026 -- Profound immune suppression and exhaustion characterize refractory mycoplasma pneumoniae pneumonia in children
  4. ASH and ISTH Revised Guidelines for Pediatric VTE, Hematology.org, 2025
  5. Frontiers in Pediatrics — Age and hypoalbuminemia independently predict pulmonary consolidation in children with 23S rRNA A2063G-mutant Mycoplasma pneumoniae pneumonia: a retrospective single-center study
  6. Epidemiological characteristics of pulmonary thromboembolism in children: a systematic review and meta-analysis
  7. Risk factors for suspected pulmonary embolism in children: Complication of Mycoplasma pneumoniae pneumonia
  8. ASH and ISTH Revised Guidelines for Pediatric VTE - Hematology.org

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