Publications by authors named "Tonia A Douglas"

Structural and functional defects within the lungs of children with cystic fibrosis (CF) are detectable soon after birth and progress throughout preschool years often without overt clinical signs or symptoms. By school age, most children have structural changes such as bronchiectasis or gas trapping/hypoperfusion and lung function abnormalities that persist into later life. Despite improved survival, gains in forced expiratory volume in one second (FEV) achieved across successive birth cohorts during childhood have plateaued, and rates of FEV decline in adolescence and adulthood have not slowed.

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Background: Sensitive measures of early lung disease are being integrated into therapeutic trials and clinical practice in cystic fibrosis (CF). The impact of early disease surveillance (EDS) using these novel and often intensive techniques on young children and their families is not well researched.

Methods: The Australian Respiratory Early Surveillance Team for Cystic Fibrosis (AREST CF) has operated a combined clinical and research early disease surveillance program, based around annual chest CT scan, bronchoscopy and lung function from newborn screening diagnosis until age 6 years, for over two-decades.

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Background: The impact of early cystic fibrosis (CF) on health-related quality-of-life (HRQOL) in preschool children is poorly characterised, and data on relationships between HRQOL and health outcomes in young children with CF are limited. We aimed to characterise and compare parent-proxy and child-reported HRQOL and evaluate relationships with clinical outcomes at age 5-years.

Methods: Subjects were participating in the multi-centre Australasian Cystic Fibrosis Bronchoalveolar Lavage (ACFBAL) trial investigating BAL-directed versus standard CF therapy.

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The past decade has seen significant advances in understanding of the pathogenesis and progression of lung disease in cystic fibrosis (CF). Pulmonary inflammation, infection, and structural lung damage manifest very early in life and are prevalent among preschool children and infants, often in the absence of symptoms or signs. Early childhood represents a pivotal period amenable to intervention strategies that could delay or prevent the onset of lung damage and alter the longer-term clinical trajectory for individuals with CF.

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Background: Early detection of Pseudomonas aeruginosa is essential for successful eradication. The accuracy of serum antibodies against specific and multiple P aeruginosa antigens at predicting lower airway infection in young children with cystic fibrosis (CF) was investigated.

Methods: A commercial P aeruginosa multiple antigen (MAg) ELISA and an in-house exotoxin A (ExoA) ELISA were compared in two populations: a discovery population of 76 children (0.

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