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背景:在南印度Tiruvallur区的一家综合医院及三家周边卫生机构(PHI)。目的:证实在肺结核诊断中二份与三份痰标本显微镜检查在病例发现策略上的有效性。方法:修订国家结核病控制规划(RNTCP)规定每个有症状的就诊于PHI的病人需采用萋尼氏染色方法进行三次痰涂片显微镜检查抗酸杆菌,我们对来自上述中心的结核病实验室登记册资料作了分析。结果:有胸部症状并有三次痰检结果者共7843例,其中895例(11.4%)至少有二次标本为涂阳。二次标本检查中以第1次即时痰及清晨痰(837例,93.5%)及清晨痰及第2次即时痰(843例,94.2%)的检出率最高。结论:二份痰涂片检查(即刻痰及清晨痰)与三次检查具有同等效果。
Background: A general hospital and three peripheral health facilities (PHI) in the Tiruvallur district of South India. PURPOSE: To demonstrate the effectiveness of microscopic examination of two and three sputum samples in the diagnosis of pulmonary tuberculosis in case finding strategies. METHODS: The National Tuberculosis Control Program (RNTCP) was amended to require three sputum smear microscopy of acid-fast bacilli for each symptomatic patient on PHI by Nigel’s staining method. We register the TB laboratory from the above centers Data was analyzed. Results: A total of 7843 patients with thoracic symptoms who had three sputum tests were included, of whom 895 (11.4%) had at least two smears. In the second specimen examination, the first instant sputum and early sputum (837 cases, 93.5%) and the early sputum and the second instant sputum (843 cases, 94.2%) had the highest detection rate. Conclusions: Two sputum smear tests (instant sputum and clear sputum) have the same effect as the three tests.