2 results on '"LJ: Lowenstein-Jensen"'
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2. Comparação de diferentes modalidades de diagnóstico para isolamento de Mycobacterium tuberculosis entre pacientes com suspeita de linfadenite tuberculosa
- Author
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Muhammad Hassan Khan, Z Qasim, Dawood Ahmed, Huda Ahmed Alghamdi, Nadim Sharif, Nasib Zaman, Usman Ayub Awan, Waqas Ahmed, Abdul Jabbar, S N Khan, Raja Tahir Mahmood, Sajida Noureen, Ume Habiba, Aamer Ali Khattak, and Muhammad Asad
- Subjects
medicine.medical_specialty ,DST: Drug Susceptibility Testing ,Tuberculosis ,QH301-705.5 ,Science ,MGIT: Mycobacterium Growth Indicator Tube ,Tuberculosis, Lymph Node ,EPTB: Extra-pulmonary Tuberculosis ,Gastroenterology ,Tubo indicador de crescimento de Mycobacterium [MGIT] ,Mycobacterium tuberculosis ,Extra-pulmonary Tuberculosis [EPTB] ,Internal medicine ,Tuberculosis, Multidrug-Resistant ,medicine ,Humans ,Mycobacteria growth indicator tube ,Biology (General) ,Lymph node ,Drug Susceptibility Testing [DST] ,Communicable disease ,GeneXpert MTB/RIF ,biology ,Mycobacterium Growth Indicator Tube [MGIT] ,Botany ,Ziehl-Neelsen [ZN] ,Teste de susceptibilidade a drogas [DST] ,biology.organism_classification ,medicine.disease ,bacterial infections and mycoses ,Tuberculose extrapulmonar [EPTB] ,Tuberculous lymphadenitis ,medicine.anatomical_structure ,ZN: Ziehl-Neelsen ,QL1-991 ,Lowenstein-Jensen [LJ] ,QK1-989 ,Histopathology ,Rifampin ,General Agricultural and Biological Sciences ,Zoology ,LJ: Lowenstein-Jensen - Abstract
Tuberculosis is a communicable disease with high morbidity and mortality rates in developing countries. The study's primary objective is to compare conventional methods such as acid-fast bacillus (AFB) culture and microscopy with rapid diagnostic methods. The secondary objective is to compare histopathological and microbiological findings in suspected patients with tubercular lymphadenitis. A total of 111 samples (August 2018 to September 2019) of lymph nodes were processed for AFB microscopy, AFB cultures, drug-susceptibility testing (DST), histopathology, and Xpert Mycobacterium Tuberculosis (MTB)/resistance to Rifampin (RIF) assays. Out of 111 lymph node samples, 6 (5.4%) were positive for AFB smear microscopy, 84 (75.6%) were positive for AFB culture, 80 (70.7%) were positive on Gene Xpert, and 102 (91.8%) were indicative of tuberculosis for histopathology studies. Mycobacteria growth indicator tube (MGIT) culture positivity was 84 (75.6%) higher than solid Lowenstein-Jensen (LJ) culture 74 (66.6%). Positive cultures underwent phenotypic DST. Two cases were Multidrug-resistant (MDR) on DST, while three cases were Rifampicin resistant on Gene Xpert. The sensitivity of Genexpert was (62%) against the conventional AFB culture method. The poor performance of conventional lymphadenitis diagnostic methods requires early and accurate diagnostic methodology. Xpert MTB/RIF test can help in the treatment of multidrug-resistant TB cases. Nonetheless, rapid and conventional methods should be used for complete isolation of Mycobacterium tuberculosis. Resumo A tuberculose é uma doença transmissível com altas taxas de morbimortalidade nos países em desenvolvimento. O objetivo principal do estudo é comparar métodos convencionais, como cultura de bacilo álcool-ácido resistente (BAAR) e microscopia, com métodos de diagnóstico rápido. O objetivo secundário é comparar os achados histopatológicos e microbiológicos em pacientes com suspeita de linfadenite tubercular. Um total de 111 amostras (agosto de 2018 a setembro de 2019) de gânglios linfáticos foi processado para microscopia de AFB, culturas de AFB, teste de susceptibilidade a drogas (DST), histopatologia e Xpert Mycobacterium tuberculosis (MTB)/ensaios de resistência à rifampicina (RIF). Das 111 amostras de linfonodos, 6 (5,4%) foram positivas para baciloscopia de AFB, 84 (75,6%) foram positivas para cultura de AFB, 80 (70,7%) foram positivas para o GeneXpert e 102 (91,8%) foram indicativas de tuberculose para estudos histopatológicos. A positividade da cultura do tubo indicador de crescimento de micobactérias (MGIT) foi 84 (75,6%), maior que a cultura sólida de Lowenstein-Jensen (LJ), 74 (66,6%). As culturas positivas foram submetidas a DST fenotípico. Dois casos eram multirresistentes (MDR) ao DST, enquanto três casos eram resistentes à rifampicina no GeneXpert. A sensibilidade do GeneXpert foi 62% contra o método convencional de cultura AFB. O fraco desempenho dos métodos convencionais de diagnóstico de linfadenite requer metodologia de diagnóstico precoce e precisa. O teste Xpert MTB/RIF pode ajudar no tratamento de casos de tuberculose multirresistente. No entanto, métodos rápidos e convencionais devem ser usados para o isolamento completo do Mycobacterium tuberculosis.
- Published
- 2021
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