title: Prevalence of chronic obstructive pulmonary disease among patients with systemic arterial hypertension without respiratory symptoms.
abstract: BACKGROUND
  The diagnosis of chronic obstructive pulmonary disease (COPD) is often delayed until later stages of the disease. The purpose of the present study was to determine the prevalence of COPD among adults on treatment for systemic arterial hypertension independently of the presence of respiratory symptoms.
  
  
  METHODS
  This cross-sectional study included adults aged ≥40 years with tobacco/occupational exposure and systemic arterial hypertension diagnosed at three Primary Health Care facilities in Goiania, Brazil. Patients were evaluated using a standardized respiratory questionnaire and spirometry. COPD prevalence was measured considering the value of forced vital capacity and/or forced expiratory volume in 1 second <0.70.
  
  
  RESULTS
  Of a total of 570 subjects, 316 (55%) met inclusion criteria and were invited to participate. Two hundred and thirty-three (73.7%) patients with arterial hypertension reported at least one respiratory symptom, while 83 (26.3%) reported no respiratory symptoms; 41 (17.6%) patients with arterial hypertension and at least one respiratory symptom, and 10 (12%) patients with arterial hypertension but no respiratory symptoms were diagnosed with COPD (P=0.24). The prevalence of COPD in people with no previous COPD diagnosis was greater among those with no respiratory symptoms (100%) than among those with respiratory symptoms (56.1%) (P=0.01).
  
  
  CONCLUSIONS
  Our findings suggest that regardless of the presence of respiratory symptoms, individuals aged ≥40 years with tobacco/occupational exposure and arterial hypertension may benefit from spirometric evaluation.
authors.affiliation: School of Medicine, Federal University of Goiás, Goiania, Brazil ; Clínica do Aparelho Respiratório (CLARE), Goiania, Brazil.
authors.forename: Marcelo Fouad
authors.initials: MF
authors.lastname: Rabahi
authors.affiliation: School of Medicine, Federal University of Goiás, Goiania, Brazil.
authors.forename: Sheila Alves
authors.initials: SA
authors.lastname: Pereira
authors.affiliation: School of Medicine, Federal University of Goiás, Goiania, Brazil ; Clínica do Aparelho Respiratório (CLARE), Goiania, Brazil.
authors.forename: José Laerte Rodrigues
authors.initials: JL
authors.lastname: Silva Júnior
authors.affiliation: School of Medicine, Federal University of Goiás, Goiania, Brazil.
authors.forename: Aline Pacheco
authors.initials: AP
authors.lastname: de Rezende
authors.affiliation: Clínica do Aparelho Respiratório (CLARE), Goiania, Brazil.
authors.forename: Adeliane
authors.initials: A
authors.lastname: Castro da Costa
authors.affiliation: Clínica do Aparelho Respiratório (CLARE), Goiania, Brazil ; Pontifical Catholic University of Goiás, Goiania, Brazil.
authors.forename: Krislainy
authors.initials: K
authors.lastname: de Sousa Corrêa
authors.affiliation: Faculdade de Medicina de Petrópolis/FASE, Petrópolis, Brazil ; Instituto de Doenças do Tórax da Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil.
authors.forename: Marcus Barreto
authors.initials: MB
authors.lastname: Conde
mesh_terms: D000368:Aged; D000395:Air Pollutants, Occupational / Q000009:adverse effects; D000959:Antihypertensive Agents / Q000627:therapeutic use; D062186:Arterial Pressure / Q000187:drug effects; D001938:Brazil / Q000453:epidemiology; D003430:Cross-Sectional Studies; D005260:Female; D005541:Forced Expiratory Volume; D006801:Humans; D006973:Hypertension / Q000175:diagnosis / Q000188:drug therapy / Q000453:epidemiology* / Q000503:physiopathology; D019570:Inhalation Exposure / Q000009:adverse effects; D008168:Lung / Q000503:physiopathology*; D008297:Male; D008875:Middle Aged; D016273:Occupational Exposure / Q000009:adverse effects; D015995:Prevalence; D029424:Pulmonary Disease, Chronic Obstructive / Q000175:diagnosis / Q000453:epidemiology* / Q000503:physiopathology; D012307:Risk Factors; D012907:Smoking / Q000009:adverse effects / Q000453:epidemiology; D013147:Spirometry; D011795:Surveys and Questionnaires; D014797:Vital Capacity
chemical_list: D000395:Air Pollutants, Occupational; D000959:Antihypertensive Agents
keywords: COPD; hypertension; public health