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Background: India has one of the highest TB burden globally. Children contribute a significant proportion of TB burden, in whom the diagnosis can be challenging because many childhood diseases mimic TB. Therefore, a high index of suspicion is required for early diagnosis of childhood tuberculosis to prevent poor outcome. Objectives was to evaluate the prevalence and profile of childhood tuberculosis cases and to determine the risk factorsMethods: An observational cross-sectional study was conducted over a period of 6 months at a hospital in north India and the prevalence and profile of the children admitted with the clinical suspicion of tuberculosis was studied. Case specific diagnostic approach was used for diagnosis and the appropriate treatment was instituted.Results: The prevalence of childhood TB was 2.3% among hospitalized children. Of these, 66.5% were males and 33.49% were females. The majority of cases were more than 8 years. The history of contact was present only in 31.1%. Tuberculin skin test was positive in 53.11%. Pulmonary tuberculosis was the most common type of childhood tuberculosis (45.45%) followed by neurological tuberculosis (42.8%), abdominal tuberculosis (6.45%), tuberculous lymphadenitis (2.63%), others (2.61%). Malnutrition was a potent contributing factor present in 91.86%. The mortality rate observed in the study was 9.56%.Conclusions: Owing to the high burden of tuberculosis among pediatric population in India, there is an alarming need to develop more economical and advanced diagnostic methods for better patient management and above all there is urgent need of the hour to educate the masses about the transmission and risk factors for this disease.
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Background: Female genital tuberculosis (FGTB) is often a silent disease sparing no age group but majority of patients are in the reproductive age. In infertility patient’s incidence of FGTB varies from 3-16% in India but the actual incidence of genital tuberculosis may be under reported due to asymptomatic presentation and paucity of investigations.Methods: Prospective case control study was conducted from June 2018 to May 2019 in LLRM Medical College Meerut. A total 100 Endometrial samples were collected during diagnostic laparoscopy from all suspected case of genital TB, presented with either primary or secondary infertility and samples sent for histopathology, Gene-xpert and Bactec culture.Results: Out of 100 samples Bactec culture was positive in 2 samples, Gene-xpert positive in 3 samples. On histopathology out of 100 cases, non-specific endometritis was found in 1 case, tubercular-endometritis in 1 case, proliferative enometrium (anovulatory) in 40 cases and secretory endometrium found in 58 cases.Conclusions: Female genital TB poses a diagnostic dilemma because of its varied presentation and lack of sensitive and specific method of diagnosis. Culture though remains the gold standard of diagnosis of female genital TB, gene-xpert, histopathology, Bactec culture or laparoscopy can be used for starting treatment. Endometrial biopsy on histopathology shows not only Tubercular endometritis but also gives hormone response on endometrium, local factors of endometrium concerning non-specific and specific infections and anovulatory cycles.
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Background: Timely diagnosis and treatment of tuberculosis is important to treat the disease and to reduce transmission. The WHO recommends using GeneXpert MTB in developing, high-burden countries. A study was conducted to evaluate the performance of Xpert assay for the detection of M. tuberculosis and rifampicin resistance in clinical specimen.Methods: About 615 consecutive samples were simultaneously subjected to culture and phenotypic drug susceptibility test for M. tuberculosis and analysis by GeneXpert assay. Confirmed Mycobacterium tuberculosis in a positive culture was used as a reference standard for TB diagnosis.Results: The assay achieved a sensitivity of 96.75% (268/277) and 76.47% (26/34) for smear positive and smear negative pulmonary specimen respectively. In extrapulmonary specimen, the sensitivity was 50% (1/2) and 42.8% (3/7) for smear positive and smear negative specimen respectively. An additional 48 M. tuberculosis were detected by Xpert assay which were smear and culture negative. The Xpert assay identified 100% of the phenotypic rifampicin susceptible isolates and 74.19% of the phenotypic rifampicin resistant isolates. Discordant results were seen in 8 (2.76%) isolates. 6 of these isolates were confirmed to be rifampicin resistant by the reference lab.Conclusions: Present study indicates that Xpert MTB/RIF assay is an effective and rapid tool for the rapid diagnosis of Mycobacterium tuberculosis. The sensitivity is comparable to culture in smear positive specimen but less sensitive than culture for smear negative specimen. In cases with high index of suspicion or discordance for rifampicin results, confirmation should be done by other methods due to false negative results on Xpert assay.
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Background: Multidrug-resistant tuberculosis (MDR-TB) prevalence is increasing throughout the world. Although, most important risk factor for development of MDR-TB is inadequate and irregular previous treatment for tuberculosis, but newly treated patients are also at risk due to either spontaneous mutations or transmission of drug-resistant strains. The conventional tuberculosis drug susceptibility tests are sensitive and specific but they are not rapid. Newer molecular methods help in rapid diagnosis. GeneXpert MTB/RIF is a rapid method to detect MTB and rifampicin resistance. Rifampicin resistance is an initial indicator of multidrug resistance. We have tried to ascertain the prevalence of Rifampicin resistance in newly diagnosed and previously treated pulmonary tuberculosis patients. Methods: This study was a prospective cross sectional study that involved all newly diagnosed and previously treated pulmonary tuberculosis patients attending the Department of Pulmonary Medicine, Muzaffarnagar Medical College, Muzaffarnagar from January 2018 to Dec 2018. In the District Hospital, Muzaffarnagar,the sputum specimens were sent for GeneXpert MTB/RIF .On the basis of the result, the patients were labelled as Rifampicin resistance. Results: A total no of 118 sputum samples were sent to District Hospital,Muzaffarnagar for GeneXpert MTB/RIF . Among these 118 patients, 102 patients were newly diagnosed pulmonary tuberculosis and 16 patients were previously treated pulmonary tuberculosis . Prevalence of Rifampicin resistance TB was found to be 0.98 % among newly diagnosed pulmonary tuberculosis, and 25 % among previously treated pulmonary tuberculosis patients. Conclusion: In conclusion, our results showed that the prevalence of Rifampicin resistance TB was high in previously treated pulmonary tuberculosis patient in comparison to newly diagnosed pulmonary tuberculosis patient. Proper administration of first line drugs for susceptible cases is most efficient method in preventing drug resistance.
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Introducción: La tuberculosis (TB) en niños posee limitaciones en la confirmación microbiológica. Por su naturaleza paucibacilar y la dificultad para obtener muestras microbiológicas adecuadas, la positividad de cultivos es baja. En adultos, la prueba Gene Xpert MTB/RIF(r) ha mostrado utilidad por su buen rendimiento, rapidez de resultados y facilidad en su realización. La Organización Mundial de la Salud (OMS) recomienda el empleo de esta prueba en niños, sin embargo, los datos de esta prueba en nuestro medio son limitados. Objetivo: Estudio de cohorte retrospectivo para describir nuestra experiencia con la prueba Gene Xpert MTB/RIF en menores de 15 años hospitalizados en un centro de alta complejidad con sospecha de TB pulmonar. Método: Se revisaron 116 historias clínicas con resultados disponibles de Xpert MTB/RIF en muestras respiratorias tomadas entre junio de 2012 y diciembre de 2013. Se excluyeron 33 casos. Los 83 pacientes incluidos se clasificaron como: TB confirmada 8 (10%), probable 16 (19%) y descartada 59 (71%) según criterios de la OMS. El análisis estadístico se realizó en SPSS 20 y EpiDat 3.1. Resultados: Xpert MTB/RIF mostró para TB confirmada una sensibilidad del 50%, especificidad 96% y valores predictivos positivos y negativos del 57,14 y 94,7%, respectivamente. Al evaluarla en el total de niños que ameritaron inicio de tratamiento (TB confirmada y probable), la sensibilidad fue del 29% con especificidad del 100%. Xpert MTB/RIF detectó una cepa resistente a rifampicina. Conclusión: Xpert MTB/RIF mostró ser útil para el diagnóstico de TB, con una sensibilidad superior a la baciloscopia. Un resultado positivo puede definir el inicio temprano de tratamiento en casos dudosos, confirma el diagnóstico y permite conocer rápidamente si existe resistencia a rifampicina. Un resultado negativo no descarta el diagnóstico ni debe impedir el inicio del tratamiento si cumple con la sumatoria de los otros criterios recomendados por la OMS.
Introduction: Microbiological confirmation of tuberculosis (TB) in children is difficult. Due to its paucibacillary course, the positivity of cultures is low and samples are not easy to obtain. In adults, Genexpert MTB/RIF is useful for diagnosing TB. It shows good test performance, offers fast results and is a simple technique for laboratory personnel. The World Health Organization (WHO) recommends its use for children, but clinical studies on this age group are scarce. Objective: This was a retrospective, descriptive cohort study. The purpose of this study was to describe our experience with Gene Xpert MTB/RIF in children younger than 15 years of age with clinical suspicion of pulmonary TB, who were admitted to a high complexity hospital. Methods: A total of 116 clinical charts with available results of Xpert MTB/RIF in respiratory samples taken between June 2012 and December 2013 were reviewed and of these, 33 were excluded. The 83 included patients were classified according to the WHO criteria into confirmed TB (n = 8; 10%), probable (n = 16; 19%) and no TB (n = 59; 71%). An analysis was performed using SPSS 20 and EpiDat 3.1. Results: The Xpert MTB/RIF was 50% sensitive and 96% specific, with a positive predictive value of 57.14% and an negative predictive value of 94.7% for children with confirmed TB. When evaluating Xpert MTB/RIF in all children who received TB treatment (confirmed plus probable TB disease) the sensitivity was 29% with 100% specificity. Among our cohort, the Xpert MTB/RIF detected one child with rifampicin resistance. Conclusions: Xpert MTB/RIF was useful for the diagnosis of TB. A positive result can lead to the early initiation of treatment in doubtful cases. It confirms the diagnosis and quickly reveals rifampicin resistance. A negative result, however, just as with cultures, does not exclude the diagnosis and should not prevent the initiation of treatment, if it is considered needed based on other criteria.
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Humans , Child, Preschool , Child , Tuberculosis, Pulmonary , Laboratory Equipment , Mycobacterium tuberculosis , Cohort Studies , Molecular Diagnostic Techniques , HospitalsABSTRACT
Aims and objectives: To diagnose and treat the MDR Tuberculosis by XPERT MTB/RIF assay as early as possible so that transmission of infection can be minimized and To find out prevalence of MDR TB in our rural district of Maharashtra. Methods: This is a observational ,prospective study conducted over a period of 14 months ( Jan 15 to April 16 ) in the Dept. of Pulmonary Medicine, Shri Vasantrao Naik Gov.t Medical College, Yavatmal, Maharashtra. We have subjected 613 patients who fulfill the clinical criteria for RNTCP - MDRTB suspect 1.Treatment failure. 2. Retreatment case sputum positive at the end of 4 months, 3.Contact of known MDRTB case, 4.Sputum positive at diagnosis, retreatment case, 5. Any follow up sputum positive, 6.Other category (sputum negative retreatment cases), and 7. HIV-TB Cases. We have excluded all new cases (sputum positive, sputum negative and extrapulmonary cases ). With all precautions two sputum samples collected in the designated microscopy centre. One sample was subjected for routine ZN staining and other one for GENE X-PERT MTB/RIF assay. Result. Out of 613 MDR suspect subjects, 314 (51.23%) were found in the age group 30 to 50 which is economically productive age group. There were 428 (69.82%) male and 185 (30.18%) female. Out of total study patient 44 (7.18 %) were detected Rifampicin resistance by X-PERT MTB/RIF assay. Amongst MDR suspect criteria highest no (4.07 %) of Rifampicin resistant were found in Retreatment cases ( group 4 ) followed by 1.47 % in any follow up sputum positive ( group 5 ) , 0.65 % in sputum negative retreatment cases ( group 6), 0.32 % in treatment failure ( group 1 ) , 0.49 % in HIV TB cases (group7 and0.16 % in contacts of known MDR ( group 3) .There were 144 ( 23 .5 ) were co infected with HIV.TB. Conclusion: We conclude that GENE XPERT MTB /RIF assay has significant role in detecting Rifampicin resistance, patient can be started on treatment at the earliest thereby reducing morbidity, progression to XDR, mortality and transmission of MDR/XDR TB in the community can be minimized. However it has some shortcomings that it cannot detect resistance of other anti- tubercular drugs and atypical mycobacteria.[B.B.Bhadke NJIRM 2016; 7(5):33-39]