Diagnostic Test For Tb Pdf Download
This statement was endorsed by the Council of the Infectious Disease Society of America, September 1999. AJR Am J Roentgenol. If the NAA result is positive and the AFB smear result is negative, the clinician must consider the case as TB positive and begin anti-TB treatment while awaiting culture results11,25. tuberculosis in 50%-80% of AFB smear-negative, culture-positive specimens. Conventional fluorescence microscopy is more sensitive (10%) than the Ziehl-Neelsen and takes less time, but it is limited by the high cost of mercury vapor light sources, the need for regular maintenance, and the dark room requirement20. Am J Respir Crit Care Med. Int J Tuberc Lung Dis. [PubMed]39.
2009;58:710. Standard guidelines and recent advances for diagnosing pulmonary TB are summarized in this article. Smear-negative pulmonary TBCurrent TB diagnostics are still suboptimal in performance, especially for smear-negative TB. With increased sensitivity and reduced delays, liquid systems may contribute significantly to improved patient management. The descriptive terms 'inactive' or 'old' TB should be discarded in favor of radiographically stable TB, as viable bacilli may persist despite adequate therapy. However, in certain TB cases that are caused by pauci-bacillary disease, where only a small number of M. [PubMed]45. 2010;35:851857.
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