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Published on: May 8, 2017
Exacerbations in noncystic fibrosis bronchiectasis: Clinical features and investigations
Nitin Kapur1, Ian Brent Masters, Anne B Chang
1Queensland Children's Respiratory Centre, Royal Children's Hospital, Australia. dr_kapurnitin@rediffmail.com
Insights
Pediatric bronchiectasis exacerbations often present with cough changes. Oral antibiotics fail in 35% of cases, with prophylactic antibiotics increasing this risk.
Area of Science:
- Pediatric Pulmonology
- Respiratory Medicine
- Clinical Research
Background:
- Children with bronchiectasis experience frequent acute pulmonary exacerbations.
- Many exacerbations necessitate hospitalization due to treatment failure with oral therapies.
- Standardized definitions and data on exacerbation features are limited.
Purpose of the Study:
- To identify clinical and investigational features of exacerbations in pediatric non-cystic fibrosis bronchiectasis.
- To determine the proportion of exacerbations unresponsive to oral antibiotics.
- To identify factors associated with oral therapy failure.
Main Methods:
- Retrospective cohort study of 115 exacerbations in 30 children with non-cystic fibrosis bronchiectasis.
- Data on clinical features, investigations, and treatments were extracted and analyzed.
- Diagnosis of bronchiectasis was confirmed by High-Resolution Computed Tomography (HRCT) of the chest.
Main Results:
- Increased cough frequency (88%) and altered cough character (67%) were most common symptoms.
- Fever (28%), increased sputum volume (42%), and purulence (35%) were frequent.
- 35% of exacerbations failed oral antibiotic therapy, requiring hospitalization.
- Prophylactic antibiotic use was a significant predictor of oral therapy failure (aOR 6.77, p=0.003).
Conclusions:
- Key clinical features of pediatric non-CF bronchiectasis exacerbations include cough changes and worsening chest signs.
- A significant proportion of exacerbations do not resolve with oral antibiotics.
- Prophylactic antibiotic use is associated with an increased risk of oral therapy failure in pediatric bronchiectasis exacerbations.
Unlabelled:
Children with bronchiectasis have recurrent acute pulmonary exacerbations and many of these exacerbations require hospital admission when oral therapies fail. However there is no standardized definition and little published data is available about the features of an exacerbation. Our aim was to determine the clinical and investigational features of exacerbations in bronchiectasis, the proportion that fail to resolve on oral antibiotics and the factors associated with it.
Methods:
A retrospective cohort study of 115 respiratory exacerbations from 30 children with noncystic fibrosis bronchiectasis diagnosed on HRCT chest. Clinical features, investigations and treatment related to the exacerbations were extracted and analysed.
Results:
Increase in frequency of cough (88%) and a change in its character (67%) were the most common symptoms associated with an exacerbation. Fever (28%), increase in sputum volume (42%) and purulence (35%) were also common features. Chest pain, dyspnea, hemoptysis and tachypnea were rare. 56% had a worsening in their chest auscultatory findings during an exacerbation. Spirometry was not significantly different between stable and exacerbation state. 35% of exacerbations failed to respond to oral antibiotic therapy and required hospital admission. Prophylactic antibiotic therapy was the only significant predictor of failure of oral therapy with adjusted odds ratio of 6.77 (95% CI 2.06-19.90; p=0.003).
Conclusions:
Important clinical features of non-CF exacerbation in bronchiectasis were changes in cough frequency or character, and worsening chest signs; which resolved on therapies. However there is a high failure rate of oral antibiotic therapy and use of prophylactic antibiotic therapy increases this risk.
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