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Use of cough swabs in a cystic fibrosis clinic

A C Equi1, S E Pike, J Davies

  • 1Department of Paediatric Respiratory Medicine, Royal Brompton & Harefield NHS Trust, Sydney Street, London SW3 6NP, UK.

Archives of Disease in Childhood
|October 23, 2001
PubMed

Insights

Cough swabs can help predict cystic fibrosis lung infections, but a negative result doesn't rule out illness. Further testing is needed if symptoms persist.

Area of Science:

  • Pediatric Pulmonology
  • Infectious Diseases
  • Microbiology

Background:

  • Cystic fibrosis (CF) patients often experience recurrent respiratory infections.
  • Accurate and timely diagnosis of respiratory pathogens is crucial for effective CF management.
  • Sputum culture is a standard diagnostic method, but obtaining sputum samples can be challenging in young children.

Purpose of the Study:

  • To evaluate the diagnostic utility of cough swabs in identifying respiratory pathogens in children with cystic fibrosis.
  • To compare the yield of cough swabs with traditional sputum cultures.

Main Methods:

  • Prospective audit of 322 cough swabs from pediatric CF patients.
  • Comparison of cough swab results with concomitant sputum samples in 30 expectorating CF patients.

Main Results:

  • A positive cough swab result was a strong predictor of a positive sputum culture.
  • A negative cough swab did not reliably exclude the presence of infection.

Conclusions:

  • Cough swabs can be a useful non-invasive tool for CF respiratory infection screening.
  • Persistent symptoms in CF patients warrant further investigation regardless of initial cough swab results.

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