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The utility of hand-held mobile spirometer technology in a resource-constrained setting
E Du Plessis1, F Swart, D Maree
1Division of Pulmonology, Department of Medicine, Faculty of Medicine and Health Sciences, Stellenbosch University and Tygerberg Academic Hospital, Cape Town, South Africa. elanadup@live.co.za.
The mobile Air-Smart Spirometer accurately measures lung function (FEV1 and FVC) and detects obstructive ventilatory impairment in primary care. This affordable device shows high sensitivity and negative predictive value for screening respiratory diseases.
Area of Science:
- Pulmonary Medicine
- Medical Technology
- Primary Care Diagnostics
Background:
- Mobile spirometry offers a novel approach for lung function assessment in primary care.
- The Air-Smart Spirometer is the first European-accepted mobile device for chronic respiratory disease screening.
Purpose of the Study:
- To evaluate the accuracy of the Air-Smart Spirometer for measuring FEV1 and FVC in South Africa.
- To assess the device's capability in identifying obstructive ventilatory impairment.
Main Methods:
- 200 participants performed spirometry using both mobile and desktop devices.
- Agreement was analyzed using Pearson correlation and Bland-Altman analysis.
- Obstructive ventilatory impairment was defined as FEV1/FVC <0.7.
Main Results:
- Strong correlations (r=0.951 for FEV1, r=0.955 for FVC, r=0.898 for FEV1/FVC) were found between the Air-Smart Spirometer and conventional spirometry.
- The device demonstrated 97.6% sensitivity and 97.8% negative predictive value for obstructive ventilatory impairment.
Conclusions:
- The Air-Smart Spirometer demonstrates comparable performance to conventional spirometry.
- It is a suitable, potentially affordable tool for primary care screening of respiratory conditions.
- The device exhibits high sensitivity and NPV for detecting obstructive ventilatory impairment.
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