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[Pulmonary functions in children with segmental Mycoplasma pneumoniae pneumonia]
Liang-Xia Wu1, Min Wu, Dan-Ping Gu
1Department of Pediatrics, Sixth People's Hospital Affiliated to Shanghai Jiaotong University, Shanghai 200233, China. wuliangxia6@126.com
Insights
Children with segmental Mycoplasma pneumoniae pneumonia (SMPP) experience reduced pulmonary function, particularly in small airways. Lung function significantly improves during recovery, indicating reversibility, but is more severe in multiple lesion cases.
Area of Science:
- Pediatric Pulmonology
- Infectious Diseases
- Respiratory Medicine
Context:
- Segmental Mycoplasma pneumoniae pneumonia (SMPP) is a common respiratory infection in children.
- Pulmonary function abnormalities are suspected but not well-characterized in SMPP.
- Understanding these changes is crucial for effective management and prognosis.
Purpose:
- To investigate the impact of SMPP on various pulmonary function parameters in children.
- To compare pulmonary function during acute and recovery phases of SMPP.
- To identify factors influencing the severity of lung function impairment.
Summary:
- Pulmonary function tests including FVC, FEV1, FEV1/FVC, PEF, FEF25%, FEF50%, FEF75%, and FEF25%-75% were significantly reduced in children during the acute phase of SMPP.
- Small airway function (FEF25%-75%) showed the most significant decline.
- Pulmonary function improved markedly during the recovery phase, with impairments being more severe in children with multiple lesion areas.
Impact:
- Demonstrates that both large and small airways are affected in pediatric SMPP.
- Highlights the reversibility of pulmonary function impairments post-infection.
- Suggests that the extent of lung involvement correlates with the severity of functional deficits.
Objective:
To investigate the changes of pulmonary functions in children with segmental Mycoplasma pneumoniae pneumonia (SMPP).
Methods:
A total of 55 children with SMPP were recruited into this study. Pulmonary functions were measured at both acute and recovery phases, including FVC, FEV1, FEV1/FVC, PEF, FEF25%, FEF50%, FEF75% and FEF25%-75%.
Results:
FVC, FEV1, FEV1 /FVC, PEF, FEF25%, FEF50%, FEF75%, and FEF25%-75% were reduced in all of the 55 cases at the acute phase. FEF25%, FEF50%, FEF75% and FEF25%-75% decreased more significantly. The indexes above mentioned were improved significantly at the recovery phase compared with the acute phase (P<0.05). During the acute phase FVC and FEV1 decreased more significantly in the group with multiple area lesions than in the group with single area lesions (P<0.05).
Conclusions:
Both large and small airway functions are damaged in different degrees in children with SMPP during the acute phase. More cases show restrictive ventilatory disorders and the injury of small airway function is more severe. The pulmonary function is markedly improved at the recovery phase, suggesting that the pulmonary function impairments are reversible. The pulmonary function impairments are more severe in children with multiple area lesions.
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