title: Evidence for chronic lung impairment in patients treated for pulmonary tuberculosis.
abstract: BACKGROUND
  Patients with pulmonary tuberculosis are likely to develop pulmonary impairment after tuberculosis (PIAT). The stability of PIAT and the relationship of PIAT to the duration of delay in tuberculosis diagnosis and treatment have not been fully characterized.
  
  
  METHODS
  We performed serial pulmonary function tests (PFTs) in a cohort treated for pulmonary tuberculosis after 20 weeks of tuberculosis therapy and again on or after treatment completion to determine the stability of PIAT. PFTs were compared with the duration of delay in tuberculosis diagnosis and treatment, as well as other demographic variables.
  
  
  RESULTS
  The median duration between the first and second tests was 15 (interquartile range 9-34) weeks. The mean change in FVC was -0.02l (95% confidence interval [CI] -0.09, 0.06), and the % predicted was -0.02 (95% CI -2.17, 2.12). FEV1 changes were 0l (95% CI -0.05, 0.06), and the % predicted was -0.11 (95% CI -1.82, 1.60). PIAT was not related to the duration of delay in tuberculosis diagnosis or treatment, age or smoking.
  
  
  CONCLUSIONS
  PIAT was not associated with the duration of delay in tuberculosis diagnosis and treatment and did not significantly change during follow-up. These data demonstrate that, for many individuals, the completion of tuberculosis treatment is the beginning, not the end, of their tuberculosis illness.
authors: Department of Medicine, University of North Texas Health Science Center at Fort Worth, TX, United States.
authors: Mauricio
authors: M
authors: Vecino
authors: Jotam G
authors: JG
authors: Pasipanodya
authors: Philip
authors: P
authors: Slocum
authors: Sejong
authors: S
authors: Bae
authors: Guadalupe
authors: G
authors: Munguia
authors: Thaddeus
authors: T
authors: Miller
authors: Michel
authors: M
authors: Fernandez
authors: Gerry
authors: G
authors: Drewyer
authors: Stephen E
authors: SE
authors: Weis
mesh_terms: D000328:Adult; D000367:Age Factors; D000368:Aged; D015331:Cohort Studies; D023801:Directly Observed Therapy; D005541:Forced Expiratory Volume / Q000502:physiology; D006801:Humans; D008168:Lung / Q000503:physiopathology*; D008875:Middle Aged; D011446:Prospective Studies; D012129:Respiratory Function Tests; D012907:Smoking / Q000503:physiopathology; D013997:Time Factors; D014397:Tuberculosis, Pulmonary / Q000188:drug therapy / Q000503:physiopathology*; D014797:Vital Capacity / Q000502:physiology