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Auricular Acupressure as an Adjuvant Treatment for Wheezing in Stable Chronic Obstructive Pulmonary Disease
Published on: May 10, 2024
In young children, persistent wheezing is associated with bronchial bacterial infection: a retrospective analysis
Iris De Schutter1, Alexandra Dreesman, Oriane Soetens
1Department of Pediatric Pulmonology, CF-Clinic and Pediatric Infectious Diseases, Universitair Ziekenhuis Brussel (UZ Brussel), Brussels, Belgium. iris.deschutter@uzbrussel.be
Insights
Bacterial infections, particularly non-typeable Haemophilus influenzae, are common in young children with persistent wheezing unresponsive to asthma therapy. These infections may explain treatment failure and indicate the need for targeted antimicrobial approaches.
Area of Science:
- Pediatric Pulmonology
- Infectious Diseases
- Microbiology
Background:
- Persistent wheezing in young children presents diagnostic and therapeutic challenges.
- Evaluating bacterial bronchial infection as a cause of non-response to conventional asthma therapy is crucial.
Purpose of the Study:
- To assess the role of bacterial bronchial infection in young children with persistent wheezing.
- To identify and characterize the main bacterial pathogens involved in treatment-resistant cases.
Main Methods:
- Retrospective analysis of microbiological and cytological findings from bronchoalveolar lavage (BAL) in young wheezers.
- Flexible bronchoscopy with BAL was performed, with strict contamination control measures.
- Quantitative bacterial culture (≥10⁴ CFU/ml) and advanced microbiological methods were employed.
Main Results:
- 48.5% of 33 evaluated children showed significant bacterial BAL cultures.
- Haemophilus influenzae (30.3%), Streptococcus pneumoniae (12.1%), and Moraxella catarrhalis (12.1%) were the predominant pathogens.
- Non-typeable H. influenzae strains were identified; respiratory viruses were found in 21.9% of cases.
Conclusions:
- Bacterial infection is frequent in persistent preschool wheezing and can explain non-response to inhaled corticosteroid (ICS) therapy.
- Non-typeable H. influenzae is the primary pathogen, followed by S. pneumoniae and M. catarrhalis.
- Findings suggest bacterial infections are a significant factor in refractory wheezing in young children.
Background:
Young children with persistent wheezing pose a diagnostic and therapeutical challenge to the pediatrician.We aimed to evaluate bacterial bronchial infection as a possible reason for non response to conventional asthma therapy, and to identify and characterise the predominant pathogens involved.
Methods:
We retrospectively analysed microbiological and cytological findings in a selected population of young wheezers with symptoms unresponsive to inhaled corticosteroid (ICS) therapy, who underwent flexible bronchoscopy with bronchoalveolar lavage (BAL). Procedural measures were taken to limit contamination risk and quantitative bacterial culture of BAL fluid (significance cut-off ≥ 10⁴ colony-forming units/ml) was used. Modern microbiological methods were used for detection of a wide panel of pathogens and for characterisation of the bacterial isolates.
Results:
33 children aged between 4 and 38 months, without structural anomalies of the conductive airways were evaluated. Significant bacterial BAL cultures were found in 48,5 % of patients. Haemophilus influenzae was isolated in 30,3 %, Streptococcus pneumoniae in 12,1 % and Moraxella catarrhalis in 12,1 %. All H. influenzae isolates were non-encapsulated strains and definitely distinguished from non-haemolytic H. haemolyticus. Respiratory viruses were detected in 21,9 % of cases with mixed bacterial-viral infection in 12,1 %. Cytology revealed a marked neutrophilic inflammation.
Conclusions:
Bacterial infection of the bronchial tree is common in persistent preschool wheezers and provides a possible explanation for non response to ICS therapy. Non-typeable H. influenzae seems to be the predominant pathogen involved, followed by S. pneumoniae and M. catarrhalis.
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