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KMID : 0383820080640020095
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Tuberculosis and Respiratory Diseases
2008 Volume.64 No. 2 p.95 ~ p.101
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The Prevalence of Initial Drug Resistance among Pulmonary Tuberculosis Patients
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Kong Jae-Hwan
Lee Sang-Seok
Kang Ha-Yan
Park Jae-Seuk
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Abstract
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Background: Drug resistant tuberculosis (TB) in patients who have not received previous TB treatment (initial drug
resistance) is a serious problem for the control of TB. However, prevalence of initial drug resistance among pulmonary TB patients has not been well characterized in Korea, especially in the private sector. We assessed the prevalence of initial drug resistance and evaluated the risk factors for drug resistance in pulmonary TB patients, at a regional tertiary hospital in Cheonan.
Methods: We performed a drug susceptibility test for both first and second line anti-TB drugs in all culture-confirmed pulmonary TB patients who had not received a previous TB treatment at Dankook University Hospital from September 2005 to September 2007. In addition, we evaluated the initial drug resistance pattern and clinical characteristics of patients to evaluate the risk factors for initial drug resistance. We also assessed the influence of the drug susceptibility test results on the treatment regimen.
Results: Of the total 156 cases where the drug susceptibility test was performed, resistance to at least one anti-TB drug was found in 21 cases (15.6%) and multidrug resistance, where TB was resistant to at least isoniazid and rifampin, was found in one case (0.6%). Multivariate logistic regression showed no clinical characteristics were independently associated with initial drug resistance. Of the total 156 patients who underwent the drug susceptibility test, the treatment regimen was changed for 15 patients (9.6%) according to the results of the drug susceptibility test.
Conclusion: Initial drug resistance is common and the drug susceptibility test is informative for pulmonary TB patients who have not received previous TB treatment. (Tuberc Respir Dis 2008;64:95-101)
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KEYWORD
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Drug resistance, Initial, Pulmonary tuberculosis
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