title: COPD: clinical phenotypes.
abstract: Different phenotypic presentations in advanced stages of COPD are less common than in years past because of therapies that alter the manifestations of disease. Early stages of COPD are often asymptotic, but may present as asthma, chronic bronchitis, emphysema or combinations. Unusual presentations at young age are not common, but may be dramatic.
authors.affiliation: University of Colorado Health Sciences, NLHEP, 1850 High Street, Denver, CO 80218, USA. tlpdoc@aol.com
authors.forename: Thomas L
authors.initials: TL
authors.lastname: Petty
mesh_terms: D000293:Adolescent; D000318:Adrenergic beta-Agonists / Q000627:therapeutic use; D000328:Adult; D000368:Aged; D001249:Asthma / Q000175:diagnosis / Q000188:drug therapy; D001993:Bronchodilator Agents / Q000627:therapeutic use; D003937:Diagnosis, Differential; D005541:Forced Expiratory Volume / Q000187:drug effects / Q000502:physiology; D006801:Humans; D008297:Male; D008875:Middle Aged; D010641:Phenotype; D011379:Prognosis; D029424:Pulmonary Disease, Chronic Obstructive / Q000175:diagnosis* / Q000188:drug therapy / Q000503:physiopathology*; D012129:Respiratory Function Tests; D012307:Risk Factors
chemical_list: D000318:Adrenergic beta-Agonists; D001993:Bronchodilator Agents