Martin Anandi, Munga Waweru Peter, Babu Okatch Fred, Amondi Ouma Naureen, Bonte Laurence, Varaine Francis, Portaels Françoise
Institute of Tropical Medicine, Antwerp, Belgium.
J Clin Microbiol. 2009 Aug;47(8):2632-4. doi: 10.1128/JCM.00264-09. Epub 2009 Jun 3.
The objective of this study was to evaluate the performance of a low-cost method, the thin layer agar (TLA) method, for the diagnosis of smear-negative patients. This prospective study was performed in Homa Bay District Hospital in Kenya. Out of 1,584 smear-negative sputum samples, 212 (13.5%) were positive by culture in Löwenstein-Jensen medium (LJ) and 220 (14%) were positive by the TLA method. The sensitivities of LJ and TLA were 71% and 74%, respectively. TLA could become an affordable method for the diagnosis of smear-negative tuberculosis in resource-limited settings, with results available within 2 weeks.
本研究的目的是评估一种低成本方法——薄层琼脂(TLA)法在诊断涂片阴性患者中的性能。这项前瞻性研究在肯尼亚霍马湾地区医院进行。在1584份涂片阴性的痰标本中,212份(13.5%)在罗氏培养基(LJ)上培养呈阳性,220份(14%)通过TLA法检测呈阳性。LJ和TLA的敏感性分别为71%和74%。TLA可能成为资源有限地区诊断涂片阴性结核病的一种经济实惠的方法,且在2周内可获得结果。