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Technical and functional assessment of 10 office spirometers: A multicenter comparative study
Giuseppe Liistro1, Carl Vanwelde, Walter Vincken
1Pneumology Unit, Cliniques Universitaires Saint-Luc, Avenue Hippocrate 10, 1200 Bruxelles, Belgium. Giuseppe.liistro@clin.ucl.ac.be
Chest
|September 12, 2006
Summary
Office spirometers show good user-friendliness for COPD detection. However, some models may increase misclassification rates due to technical variations compared to standard spirometers.
Area of Science:
- Pulmonary Function Testing
- Medical Device Evaluation
- General Practice Diagnostics
Background:
- Office spirometers are increasingly used in general practice for respiratory assessments.
- Evaluating the technical performance and usability of these devices is crucial for accurate diagnosis.
Purpose of the Study:
- To assess the technical properties and user-friendliness of 10 office spirometers.
- To compare their performance against standard diagnostic spirometers.
Main Methods:
- A multicenter study involving 3 pulmonary function laboratories and 3 general practitioners (GPs).
- Technical quality assessed via precision and agreement with standard spirometers.
- User friendliness evaluated by GPs using a questionnaire.
- 399 subjects participated in FVC and FEV1 measurements.
Main Results:
- FEV1 precision was comparable between office and standard spirometers.
- Three office spirometers showed >200 mL precision limits for FVC.
- Some devices underestimated small FEV1 values and had >10% agreement limits for FEV1/FVC ratio.
- Overall user friendliness was rated as good.
Conclusions:
- Several office spirometers are acceptable for COPD detection due to their global quality and user-friendliness.
- Potential for increased misclassification rates exists with certain office spirometer models due to technical discrepancies.
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