Evaluation of Gene Xpert Test of Stool Specimen with that of Induced Sputum as Gold Standard

Abstract

Background: Globally Tuberculosis (TB) is a major infectious disease. In 2011, there were an estimated 8.7 million new cases with 6% childhood tuberculosis. The majority of the cases occurring in high TB burden countries worldwide. Confirmed diagnosis of childhood TB remains challenging for physicians. MT test and Chest X-ray usually has very little diagnostic value for the diagnosis of pulmonary tuberculosis in children who has symptom criteria suggestive of PTB. Objectives: This study was done to evaluate of Gene Xpert Test of Stool Specimen with that of Induced Sputum as Gold Standard. Methods: The cross-sectional study was conducted in the Department of Pediatrics, Sir Salimullah Medical College & Mitford Hospital from January 2020 to June 2021. A total of 48 subjects of both sexes with the age range from 1 month to 59 months were included in the study. Data were collected over a period of eleven months and analyzed by appropriate computer based programmed software Statistical Package for the Social Sciences (SPSS), version 22. Results: In this study, most of the children 14 (29.2%) lies between 13 months to 24 months. About most of the children 28 (58.33%) were male and 20 (41.67%) children were female. According to the clinical presentation majority of the children present with fever 39(75.0%), followed by cough (72.9%) and weight loss (50%), history of contact was present in 15 (31.3%) children. Chest X-ray of 54% children was suggestive of PTB (as Consolidation, Milliary mottling, patchy opacity etc) 46% showed normal X-ray findings. Gene X-pert of Induced sputum could detect M.Tuberculosis in case of 12.5% children and in 87.5% cases Gene X-pert could not detect M.Tuberculosis in induced sputum. M.Tuberculosis was detected by Stool X-pert in 18% of children who were clinically diagnosed as PTB. In 82% of patient stool X-pert could not detect M.Tuberculosis. Conclusion: Gene Xpert test of stool specimen is a relatively easy test for the diagnosis ........