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일개 2차 의료기관에서의 비결핵성 마이코박테리아 분리비율 및 폐질환의 임상 경과
이재광 ( Jae Kwang Lee ),권혁용 ( Hwuck Young Kwon ),권종규 ( Jong Kyu Kwon ),이화정 ( Hwa Jeong Lee ),이동욱 ( Dong Wook Lee ),이유진 ( Yu Jin Lee ),윤경화 ( Kyung Hwa Yoon ),송도영 ( Do Young Song ),이병기 ( Byung Ki Lee ),김연 대한결핵 및 호흡기학회 2009 Tuberculosis and Respiratory Diseases Vol.67 No.3
Background: To examine the recovery rate of nontuberculous mycobacteria (NTM) from respiratory specimens and the clinical course of NTM pulmonary disease at a 700-bed secondary hospital. Methods: This study analyzed the results of 843 acid-fast bacilli (AFB) culture-positive respiratory specimens from 650 subjects collected between May 2003 and April 2008. In addition, the clinical course of NTM pulmonary disease, diagnosed using criteria established by the American Thoracic Society, was examined. Results: There were 67 (7.9%) NTM isolates recovered from 52 (8.0%) subjects. Among the 535 AFB smear-positive specimens, 34 (6.3%) NTM isolates were recovered. There were 33 (10.7%) NTM isolates were recovered from 308 AFB smear-negative specimens. Of 52 subjects with isolated NTM, M. intracellulare was the most common species at 73.1% (n=33), followed by M. kansassi (n=7), M. abscessus (n=2), M. fortuitum (n=2), and M. avium (n=1). Sixteen (30.8%) patients had NTM pulmonary disease and the most common causative organism was M. intracellulare (n=14, 87.5%). Of these, 6 cases attained negative conversion in culture, 4 cases failed to attain negative conversion because of poor cooperation or expiration from complicated underlying lung disease, and 5 cases were transferred to a higher-grade hospital. Conclusion: The recovery rate of NTM from respiratory specimens was relatively low and the most common species was M. intracellulare. Patients with NTM pulmonary disease showed variable clinical outcomes.