[Spirometric pulmonary age and its correlation with the chronological age of asthma patients]. 
Pulmonary age as a linear regression spirometric index, expresses pulmonary ventilatory function.  A pilot study was done to assess the differences of the values of the pulmonary age index and chronological age in patients with bronchial asthma and healthy volunteers.  We studies 111 subjects, 31 healthy and 80 with asthma.  All of them underwent spirometry.  Healthy individuals showed a mean chronological age of 35 years, and a pulmonary age of 26 years.  Asthmatic patients showed a mean chronological age of 38 years, and a pulmonary age of 59 years.  Both the time course and the severity of the disease increased pulmonary age.