Relevance of a portable spirometer for detection of small airways obstruction
| Autor: | Vivian Leske, Ha Trang, Nadia Ezzahir, Claudine Peiffer |
|---|---|
| Rok vydání: | 2004 |
| Předmět: |
Pulmonary and Respiratory Medicine
Male medicine.medical_specialty Adolescent Intraclass correlation Sensitivity and Specificity law.invention law Internal medicine Administration Inhalation medicine Humans Albuterol Child Small airways business.industry Reproducibility of Results Mean age Equipment Design Forced Expiratory Flow Rates Surgery Highly sensitive Bronchodilator Agents Airway Obstruction Spirometry Pediatrics Perinatology and Child Health Cardiology Female business Spirometer |
| Zdroj: | Pediatric pulmonology. 39(2) |
| ISSN: | 8755-6863 |
| Popis: | While portable spirometers are increasingly used, little attention has been paid to test their validity for measurement of flows in small airways. The aim of this study was to compare the Spirotel portable spirometer to a laboratory spirometer (Jeager PFT), with regard to accuracy in measuring forced expiratory flows, and more specifically those influenced by small airways (FEF25–75). Fifty-nine children (mean age, 12 years; range, 7–17), were studied at baseline and after a bronchodilator inhalation. Spirometers were tested separately in a randomly designed order. A total of 117 sessions of flow-volume curves was performed with each spirometer. We obtained at least two acceptable and reproducible curves in 88% and 76% of the sessions, with the laboratory and the portable spirometers, respectively. Unacceptable curves were easily detected by visual inspection of flow-time and flow-volume waveforms. Agreement was excellent between spirometers for the measurement of all expiratory flows, both at baseline and postbronchodilator. More specifically, agreement between spirometers was as high for measurements of FEF25–75 (intraclass correlation coefficients 0.97) as for proximal flows. High correlations were found between baseline expiratory flows measured by each spirometer (and expressed as percent of predicted values), both in large and small airways (P |
| Databáze: | OpenAIRE |
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