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Antibiotic Efficacy Testing in an Ex vivo Model of Pseudomonas aeruginosa and Staphylococcus aureus Biofilms in the Cystic Fibrosis Lung
Published on: January 22, 2021
Prognosis in cystic fibrosis treated with continuous flucloxacillin from the neonatal period
L T Weaver1, M R Green, K Nicholson
1MRC Dunn Nutrition Unit, Cambridge.
Insights
Continuous flucloxacillin for cystic fibrosis infants improved clinical progress. Early antibiotic prophylaxis reduced hospital admissions and Staphylococcus aureus infections in the first two years of life.
Area of Science:
- Pediatrics
- Infectious Diseases
- Pulmonology
Background:
- Cystic fibrosis (CF) is a genetic disorder affecting multiple organs.
- Early diagnosis and intervention are crucial for managing CF.
- The role of prophylactic antibiotics in early CF management is an area of ongoing research.
Purpose of the Study:
- To evaluate the efficacy of continuous oral flucloxacillin prophylaxis versus episodic antimicrobial treatment in infants with cystic fibrosis.
- To assess the impact of early antibiotic strategy on clinical outcomes up to 24 months of age.
Main Methods:
- A randomized controlled trial involving 38 infants diagnosed with cystic fibrosis.
- Infants were assigned to either continuous flucloxacillin (250 mg/day) or episodic antibiotic treatment.
- Regular monitoring of anthropometric, dietary, clinical, and microbiological data by a nurse coordinator.
Main Results:
- No significant differences in baseline characteristics between the two groups.
- The episodic treatment group experienced more frequent cough and higher Staphylococcus aureus isolation rates.
- Infants receiving episodic treatment had more hospital admissions, higher admission rates, and longer hospital stays.
Conclusions:
- Continuous prophylactic flucloxacillin initiated early in cystic fibrosis management is associated with improved clinical progress.
- Early antibiotic prophylaxis may reduce the incidence of respiratory infections and hospitalizations in young children with CF.
Abstract:
All newborn infants in East Anglia are screened for cystic fibrosis by blood immunoreactive trypsin assay at 7 days. Thirty eight infants with cystic fibrosis were randomised to treatment with either continuous oral flucloxacillin 250 mg/day (group P, n = 18) or with episodic antimicrobials as clinically indicated (group E, n = 20). Their progress was monitored from diagnosis to 24 months by a nurse coordinator who visited all infants regularly, at home and in hospital, to collect anthropometric, dietary, clinical, and microbiological data. Mean (range) age of confirmation of diagnosis was 5.7 weeks (1-14 weeks). There was no significant difference in birth weight, genotype, immunoreactive trypsin concentration, neonatal history, symptoms at diagnosis, pancreatic enzyme supplementation, or parental smoking history between the groups. Infants in group E had more frequent cough and a greater number of Staphylococcus aureus isolates than infants in group P. More infants of group E were admitted to hospital, had higher admission rates during the second year (19 v 5), for longer periods (6.4 v 2.2 days), despite receiving more than double the number of courses of antibiotics than group P infants (in addition to flucloxacillin). Continuous prophylactic flucloxacillin from early diagnosis of cystic fibrosis is associated with improved clinical progress during the first two years of life.
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