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- Rogelio Perez-Padilla, Fernando C Wehrmeister, Montes de Oca Maria M Pulmonary Division, Hospital Universitario de Caracas, Universidad Central de Venezuela, Caracas, Venezuela., Maria Victorina Lopez, Jose R Jardim, Adriana Muino, Gonzalo Valdivia, Julio Pertuze, Ana Maria B Menezes, and PLATINO group.
- Sleep Clinic, National Institute of Respiratory Diseases, Mexico City, Mexico.
- Plos One. 2015 Jan 1; 10 (3): e0121832.
BackgroundA low FEV1/FVC from post-bronchodilator spirometry is required to diagnose COPD. Both the FEV1 and the FVC can vary over time; therefore, individuals can be given a diagnosis of mild COPD at one visit, but have normal spirometry during the next appointment, even without an intervention.MethodsWe analyzed two population-based surveys of adults with spirometry carried out for the same individuals 5-9 years after their baseline examination. We determined the factors associated with a change in the spirometry interpretation from one exam to the next utilizing different criteria commonly used to diagnose COPD.ResultsThe rate of an inconsistent diagnosis of mild COPD was 11.7% using FEV1/FVC <0.70, 5.9% using FEV1/FEV6
ConclusionsUsing FEV1/FEV6 Notes
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