期刊
ANNALS OF MEDICINE
卷 53, 期 1, 页码 576-580出版社
TAYLOR & FRANCIS LTD
DOI: 10.1080/07853890.2021.1908587
关键词
Post-bronchoscopy sputum; pulmonary tuberculosis; pauci-bacillary
资金
- Korea Medical Device Development Fund - Korea government [202011C07]
The study suggests that post-bronchoscopy sputum (PBS) can improve the diagnostic yield for pauci-bacillary pulmonary tuberculosis (PTB) by 20%, and about 8% of patients can be rapidly diagnosed with positive AFB smear microscopy for PBS. Therefore, the use of PBS as a complementary diagnostic approach should be considered for patients with suspected pauci-bacillary PTB.
Background A few studies have mentioned that post-bronchoscopy sputum (PBS) could improve the diagnostic yield in pauci-bacillary pulmonary tuberculosis (PTB). Therefore, we evaluated the diagnostic yield of PBS for diagnosing pauci-bacillaryPTB. Methods Clinical data of immunocompromised adult patients with pauci-bacillary PTB were retrospectively retrieved at a tertiary hospital in Seoul, South Korea over a 5-year period. We analyzed patients who underwent bronchoscopy examinations for diagnosing pauci-bacillary PTB. Results Ninety patients were finally analyzed. Of these patients, 76 patients were tested with PBS. Six (8%) of these patients had positive results on AFB smear of PBS alone. Additionally, 52 patients (68%) had positive results on mycobacterial culture and 12 (16%) had positive results on mycobacterial culture of PBS exclusively. Therefore, in this study population, a total of 18 patients (20%) were finally diagnosed as having PTB with PBS results only, even though AFB smear microscopy and culture of other specimens had negative results. Conclusions PBS could improve the diagnostic yield by 20% when diagnosing pauci-bacillary PTB. In addition, about 8% of the patients could be diagnosed rapidly because of AFB smear microscopy positivity for PBS. Therefore, PBS use should be considered as a complementary diagnostic approach in patients with suspected pauci-bacillary PTB.
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