title: Impact of fluoroquinolones on the diagnosis of pulmonary tuberculosis initially treated as bacterial pneumonia.
abstract: OBJECTIVE
  The excellent in vitro activity of fluoroquinolones against Mycobacterium tuberculosis has raised concerns about the delayed diagnosis of pulmonary tuberculosis (PTB) initially misdiagnosed as pneumonia. The aim of this study was to assess the effect of empiric fluoroquinolone therapy on delays in diagnosis in patients with PTB initially misdiagnosed as bacterial pneumonia.
  
  
  METHODS
  Patients with PTB initially treated as having community-acquired pneumonia and treated with fluoroquinolones for more than 5 consecutive days, from January 2000 to December 2004, were enrolled. As a control group, TB patients initially treated with nonfluoroquinolone antibiotics were enrolled. We reviewed the clinical data and compared treatment responses between the two groups.
  
  
  RESULTS
  Nine patients in the fluoroquinolone group and 19 patients in the non-fluoroquinolone group were enrolled. In the fluoroquinolone group, eight patients (89%) improved clinically or radiographically, whereas only eight patients (42%) in the non-fluoroquinolone group improved (P = 0.04). The delay in initiation of anti-tuberculosis medication was longer in the fluoroquinolone group than in the non-fluoroquinolone group (43.1 - 40.0 vs. 18.7 +/- 16.9 days, P = 0.04).
  
  
  CONCLUSIONS
  Delay in the initiation of anti-tuberculosis treatment is possible in patients administered fluoroquinolone and initially misdiagnosed as having bacterial pneumonia.
authors.affiliation: Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Seoul National University College of Medicine, Republic of Korea.
authors.forename: Y S
authors.initials: YS
authors.lastname: Yoon
authors.forename: H J
authors.initials: HJ
authors.lastname: Lee
authors.forename: H I
authors.initials: HI
authors.lastname: Yoon
authors.forename: C-G
authors.initials: CG
authors.lastname: Yoo
authors.forename: Y W
authors.initials: YW
authors.lastname: Kim
authors.forename: S K
authors.initials: SK
authors.lastname: Han
authors.forename: Y-S
authors.initials: YS
authors.lastname: Shim
authors.forename: J-J
authors.initials: JJ
authors.lastname: Yim
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D016022:Case-Control Studies; D003951:Diagnostic Errors; D005260:Female; D024841:Fluoroquinolones / Q000494:pharmacology* / Q000627:therapeutic use; D006801:Humans; D008297:Male; D008875:Middle Aged; D018410:Pneumonia, Bacterial / Q000175:diagnosis* / Q000188:drug therapy; D012189:Retrospective Studies; D013997:Time Factors; D014397:Tuberculosis, Pulmonary / Q000175:diagnosis*
chemical_list: D024841:Fluoroquinolones