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Related Experiment Videos

Infection risks associated with spirometry.

D R Rutala1, W A Rutala, D J Weber

  • 1Department of Hospital Epidemiology, University of North Carolina Hospitals, Chapel Hill.

Infection Control and Hospital Epidemiology
|February 1, 1991
PubMed
Summary
This summary is machine-generated.

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Spirometry mouthpieces and tubing can become contaminated with respiratory pathogens. To prevent cross-transmission, these components should not be shared between patients. Cleaning the internal spirometer surfaces is unnecessary.

Area of Science:

  • Pulmonary Medicine
  • Infectious Disease Control
  • Medical Device Safety

Background:

  • Spirometry is a crucial pulmonary function test.
  • Assessing cross-transmission risk from spirometers is vital for patient safety.
  • Dry-rolling seal spirometers are commonly used in clinical settings.

Purpose of the Study:

  • To evaluate microbial contamination of spirometers after patient use.
  • To identify the risk of cross-transmission of respiratory pathogens via spirometers.
  • To inform best practices for spirometer hygiene and reprocessing.

Main Methods:

  • Prospective study design involving 14 patients with pulmonary disease.
  • Sputum and equipment samples (mouthpiece, tubing, piston) collected pre-spirometry.

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  • Simulations performed post-patient testing to assess potential for cross-transmission.

    • Main Results:

    • Mouthpieces showed contamination with oral flora and respiratory pathogens.
    • 14% of associated tubing samples tested positive for respiratory pathogens.
    • Internal spirometer surfaces and simulated patient samples remained negative for pathogens.

    Conclusions:

    • Spirometry mouthpieces and tubing pose a risk for microbial contamination.
    • Sharing of spirometry mouthpieces and tubing between patients should be avoided.
    • Routine cleaning of internal spirometer surfaces is not indicated due to low contamination risk.