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FEV1 to FVC Ratio and the Lung Age Formula of Hansen et al

Purpose:	To determine the ratio of FEV1 to FVC and to assess a patient's apparent lung age using the equation of Hansen et al.
Specialty:	Allergy, Allergy/Immunology, Internal Medicine, Sports Medicine - Internal Medicine, Internal Medicine/Pediatrics, Pulmonary Critical Care Medicine, Pulmonary Disease, Pediatric Critical Care Medicine, Internal Medicine/Pediatrics, Pediatrics, Pediatric Allergy, Pediatric Pulmonology, Pediatric Emergency Medicine, Sports Medicine - Pediatrics
Objective:	clinical diagnosis, including family history for genetics, other testing, severity, prognosis, stage, complications
ICD-10:	J20-J22, J40-J47, R94.2
Description:	Hansen et al used the actual to predict ratio of FEV1-to-FVC to estimate a smoker's lung age. Demonstrating a significant lung problem may be helpful for convincing a smoker to quit. The authors are from the University of California David Geffen School of Medicine.

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