title: Primary antituberculosis drug resistance at Turkish military chest diseases hospital in Istanbul.
abstract: OBJECTIVE
  The aim of this study was to investigate the prevalence of primary drug resistance to tuberculosis.
  
  
  METHODS
  We evaluated the clinical data, radiological features and sputum samples from 365 newly diagnosed patients with a positive culture of pulmonary tuberculosis at the Turkish Military Chest Diseases Hospital, Istanbul, Turkey. No patients had taken antituberculosis drugs previously. The Bactec method was used to perform drug susceptibility testing for isoniazid, rifampicin, ethambutol, and streptomycin.
  
  
  RESULTS
  Primary resistance to one or more drugs was detected in 87 (23.8%) patients; resistance to isoniazid was most common (54 patients) followed by resistance to ethambutol (n = 39), rifampicin (n = 11), and streptomycin (n = 9). One-drug resistance was detected in 69 patients; two-drug resistance in 11, three-drug resistance in 6, and four-drug resistance in 1. Multidrug resistance (resistance to at least isoniazid and rifampicin) was detected in 10 patients. In logistic-regression analysis, primary drug resistance was associated with radiological advanced tuberculosis (p < 0.001).
  
  
  CONCLUSIONS
  Primary resistance to one or more drugs used in treating tuberculosis is relatively high. It is necessary to regularly screen for and treat drug resistance among those who live in close quarters, such as army barracks, school dormitories and prisons. Regular surveillance of drug sensitivity patterns should be maintained to determine appropriate alternate drug regimens and detect the spread of resistant stains in the population.
authors.affiliation: Gata Camlica Chest Diseases Hospital, Istanbul, Turkey. zkartaloglu@hotmail.com
authors.forename: Zafer
authors.initials: Z
authors.lastname: Kartaloglu
authors.forename: Erkan
authors.initials: E
authors.lastname: Bozkanat
authors.forename: Hakan
authors.initials: H
authors.lastname: Ozturkeri
authors.forename: Oguzhan
authors.initials: O
authors.lastname: Okutan
authors.forename: Ahmet
authors.initials: A
authors.lastname: Ilvan
mesh_terms: D000328:Adult; D000368:Aged; D000995:Antitubercular Agents / Q000145:classification / Q000494:pharmacology* / Q000627:therapeutic use; D005260:Female; D006772:Hospitals, Military; D006801:Humans; D008297:Male; D008826:Microbial Sensitivity Tests; D008875:Middle Aged; D008889:Military Personnel / Q000706:statistics & numerical data; D009169:Mycobacterium tuberculosis / Q000187:drug effects*; D015995:Prevalence; D018088:Tuberculosis, Multidrug-Resistant / Q000453:epidemiology*; D014397:Tuberculosis, Pulmonary / Q000188:drug therapy*; D014421:Turkey / Q000453:epidemiology
chemical_list: D000995:Antitubercular Agents