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Related Experiment Videos

Stability of the EasyOne ultrasonic spirometer for use in general practice.

Julia A E Walters1, Richard Wood-Baker, Justin Walls

  • 1Cardio-Respiratory Research Group, School of Medicine, University of Tasmania, Hobart, Tasmania, Australia.

Respirology (Carlton, Vic.)
|April 26, 2006
PubMed
Summary

This study found that the EasyOne portable spirometer maintains accuracy without daily calibration, supporting its use in general practice for diagnosing respiratory diseases.

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Area of Science:

  • Pulmonary Medicine
  • Medical Device Technology

Background:

  • Spirometry is crucial for diagnosing and managing chronic respiratory diseases.
  • Current guidelines from the American Thoracic Society and European Respiratory Society (ATS/ERS) recommend daily spirometer calibration.
  • Many general practitioners do not meet this daily calibration recommendation.

Purpose of the Study:

  • To evaluate the accuracy and calibration stability of the portable ultrasonic EasyOne spirometer.
  • To assess if the EasyOne spirometer requires regular calibration as per ATS/ERS guidelines.

Main Methods:

  • Six EasyOne spirometers were tested in a practice-based setting.
  • Accuracy was assessed using a certified 3-L syringe for inspiratory and expiratory maneuvers.
  • Calibration checks were performed periodically over 26 weeks using dedicated and random mouthpiece assemblies.

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Main Results:

  • All spirometers met ATS/ERS accuracy criteria throughout the study period.
  • No significant change in calibration was observed during 26 weeks of routine clinical use.
  • The spirometer's accuracy was unaffected by flow rates generated during calibration.

Conclusions:

  • The EasyOne spirometer demonstrated stable calibration during routine general practice use.
  • The findings support the manufacturer's claim that daily calibration is not required for this device.
  • This may simplify spirometry procedures in community settings.