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Published on: August 24, 2019
Long-term outcome of parapneumonic effusions in children: Lung function and exercise tolerance
Kalliopi Kontouli1, Elpis Hatziagorou1, Fotis Kyrvasilis1
13rd Paediatric Dept, Paediatric Pulmonology Unit, Aristotle University of Thessaloniki, Hippokration Hospital, Thessaloniki, Greece.
Insights
Long-term outcomes for children with parapneumonic effusions (PPE) show minor lung function changes, with no clinical impact. Pre-existing asthma did not significantly alter these results.
Area of Science:
- Pediatric Pulmonology
- Respiratory Medicine
- Clinical Outcomes Research
Background:
- Parapneumonic effusions (PPE) are common in children.
- Long-term sequelae of pediatric PPE require further investigation.
- The influence of comorbid asthma on PPE outcomes is not fully understood.
Purpose of the Study:
- To assess the long-term lung function and exercise tolerance in children following PPE.
- To determine if pre-existing asthma affects the long-term outcomes of pediatric PPE.
Main Methods:
- A cohort of 51 children with prior PPE was evaluated at least 2 years post-infection.
- Children were stratified into groups with and without prior asthma.
- Spirometry and maximal incremental cardiopulmonary exercise testing were performed and compared to healthy controls.
Main Results:
- Children with a history of PPE exhibited reduced FVC%, FEV1%, and FEV1/FVC compared to controls.
- Children with PPE and asthma showed lower FEF(25-75%) and FEV1/FVC compared to controls and the PPE-only group, respectively.
- Maximal exercise capacity (VO2max) was similar across all groups; however, children with PPE had higher VE/VO2 during exercise.
Conclusions:
- Pediatric PPE results in minor, clinically insignificant long-term effects on lung function and exercise capacity.
- Pre-existing asthma does not appear to significantly modify the long-term pulmonary outcomes after PPE.
- Children with a history of PPE may experience subtle changes in respiratory efficiency during exercise.
Objectives:
a: To evaluate the long-term outcome of parapneumonic effusions (PPE) in children regarding lung function and exercise tolerance, (b) to investigate the role of bronchial asthma in the outcome of PPE.
Methods:
The design of the study included 51 children with PPE, at least 2 years after the initial infection. They were divided in two groups. Group A (38 children) consisted of children with PPE but without asthma prior initial infection. Group B (13 children) included children with PPE and asthma prior infection. Thirty-six children were taken as healthy controls (group C). All children performed spirometry and a maximal incremental cardiopulmonary exercise test on cycle ergometer.
Results:
Children of both groups (A and B) showed statistically significant lower values in FVC%, FEV1%, and FEV1 /FVC compared to controls (group C). Children of group B had also significant lower FEF(25-75%) values compared to controls. Children of group B had significant lower FEV1 /FVC values compared to group A. All children of the three groups showed no differences in maximal exercise capacity (VO2max). Children of group A had higher respiratory equivalent to oxygen (VE/VO2) during exercise compared to healthy subjects.
Conclusions:
There are small effects on lung function and exercise capacity in the long-term, among children with PPE, but of no clinical importance. Pre-existing bronchial asthma doesn't influence the outcome significantly.
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