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Validation of the portable Air-Smart Spirometer.
Cristina Ramos Hernández1,2, Marta Núñez Fernández1, Abel Pallares Sanmartín3
1Department of Pneumonology, University Hospital Complex of Vigo, Pontevedra, Spain.
Plos One
|February 24, 2018
Summary
The Air-Smart Spirometer accurately detects airway obstructions, showing high concordance with conventional spirometry. This portable device offers precision and ease of use for diagnosing respiratory conditions.
Area of Science:
- Pulmonary Medicine
- Medical Devices
- Diagnostic Technology
Background:
- The Air-Smart Spirometer is the first portable, European Community (EC) accepted device for spirometric measurements.
- It utilizes a turbine mechanism and displays results on smartphones or tablets.
Purpose of the Study:
- To compare spirometric measurements (FEV1, FVC, FEV1/FVC ratio) between the Air-Smart Spirometer and a conventional spirometer.
- To analyze the portable device's ability to detect airway obstructions.
Main Methods:
- A multicenter, descriptive, cross-sectional prospective study involving 200 patients.
- Comparison of FEV1, FVC, and FEV1/FVC ratio using statistical measures including Kappa Index, sensitivity, specificity, PPV, NPV, LR+/-, ICC, and Pearson correlation coefficient (r).
Main Results:
- The Air-Smart Spirometer demonstrated high accuracy in detecting obstructions (Kappa index 0.88).
- Sensitivity was 90.4%, specificity 97.2%, PPV 95.7%, and NPV 93.7%.
- Intraclass correlation coefficient (ICC) and Pearson correlation coefficient (r) for FEV1, FVC, and FEV1/FVC ratio exceeded 0.94, indicating strong agreement.
Conclusions:
- The Air-Smart Spirometer is a precise and simple instrument for detecting obstructive airway diseases.
- Its ease of use makes it suitable for non-specialized care settings.
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