Real life spirometry analysis according to age groups

Introduction: Forced spirometry (FS) is essential for diagnosis and control of respiratory diseases. The aim is to analyze demographic, clinical and spirometric variables by age groups. Method: Retrospective study including all high quality FS (according to clinical guidelines) performed in 140 primary care centers from Sep 2011 to Feb 2019. Variables were divided by age ranges (≤14, 14-65, 65-80 and >80 years). Results: 56,515 FS were performed: 6,149 in ≤14 years (y), 36,732 in 14-65y, 11,662 in 65-80y and 1,972 in >80y. Asthma was the main previous diagnosis in the 0-65y group and COPD in the 65-95y group. In 14-65y group most of the tests are done for diagnosis and in the rest of ranges for control. In the FS performed for diagnosis, positive Post-Bronchodilator test (PBD) was detected in 2.4% of patients ≤14y, 22.1% in 14-65y, 17.4% in 65-80y and 11.7% in >80y. FEV1/FVC PBD 80y (45.3% smoking history). Tables 1 and 2 show spirometric data classified by age groups and subclassified by previous diagnoses of asthma and COPD. Conclusions: The main pre-diagnosis 80y. Considerable number of patients had previous COPD diagnosed without obstruction in PDB spirometry.