scholarly journals Evaluation of Truenat MTB/RIF Test in Comparison with Microscopy and Culture for Diagnosis of Extrapulmonary Tuberculosis in a Tertiary Care Centre

Author(s):  
Reena Anie Jose ◽  
Krishna Gopal ◽  
Abel K Samuel Johnson ◽  
Jennie Ann Johnson Samuel ◽  
Sherin Susan Abraham ◽  
...  

Introduction: Worldwide, Extrapulmonary Tuberculosis (EPTB) accounts for 15-20% of all cases of TB. The diagnosis of EPTB is a big challenge, as the number of Mycobacterium tuberculosis(MTB) bacilli in the tissues and other organs is often very low. Truenat MTB/RIF (rifampicin) is a novel method, which is battery operated, point-of-care and chip-based Real Time Polymerase Chain Reaction (RT-PCR) micro device. Aim: To evaluate Truenat as a screening test in the diagnosis of EPTB in comparison with microscopy and culture. Materials and Methods: A prospective cross-sectional study was carried out over a year in which samples from suspected cases of EPTB fitting in the inclusion criteria were subjected to Ziehl-Neelsen (ZN) staining for smear microscopy, culture on Lowenstein Jensen (LJ) medium and PCR for MTB by Truenat. Comparisons were made between the tests and the data was presented using summary statistics with 95% Confidence Interval (CI). Results: A total of 248 samples were received from suspected cases of EPTB. Out of the different samples tested, 9 (3.6%) were positive with Truenat MTB. The predominant type of EPTB observed in the study was lymph node Tuberculosis (TB) (66.6%) followed by intestinal, pleural and skeletal TB. Out of the 106 samples tested for culture, four were culture positive for MTB and out of 178 samples tested for microscopy, three were positive for acid fast bacilli. Sensitivity, specificity, Negative Predictive Value (NPV), Positive Predictive Value (PPV), observed agreement of Truenat with culture and microscopy were 100%, 95.1%, 100%, 44.4%, 95.3% and 100%, 96.6%, 100%, 33.3%, 96.6%, respectively. Conclusion: Truenat MTB test is a cost-effective rapid molecular test with good sensitivity and specificity for the diagnosis of EPTB in low resource settings.

2020 ◽  
Author(s):  
Letebrhan Weldemhret

Abstract Background: Sputum smear microscopy remains the most cost-effective tool for tuberculosis diagnosis and treatment monitoring in resource constrained settings. Random blinded rechecking is a reliable tool to measure and improve smear microscopy. So, this study was intended to assess random blinded rechecking of AFB smear microscopy performance in selected private health facilities in Tigray region, Northern Ethiopia.Methods: A cross sectional study was conducted from April 1st 2017 to May 30, 2017. The data was collected using standard data collection form. Statistical analysis was done using SPSS version 25 and the reading agreement was done using kappa statistics.Results: Of the total 269 blinded rechecked smears, 4.8% was found discrepant findings. The major and minor errors were reported by 2.6% (7/269) and 2.2% (6/269) respectively. Likewise, the major error was reported by 50% (5/10) of health facilities with microscopic center. Overall, the sensitivity, specificity, positive predictive value, and negative predictive value of the blinded rechecking smears were 87.5%, 98%, 89.7% and 97.8%, respectively with substantial reading agreement, kappa value= 0.80.Conclusions: The overall performance of blinded rechecking was satisfactory with good smear reading agreement. But, the major error reported indicated unacceptable performance. To minimize the discrepancy, private health facilities with tuberculosis smear microscopic center should adhere to national tuberculosis guidelines.


Author(s):  
Danish Zahoor ◽  
Anjum Farhana ◽  
Farhath Kanth ◽  
Munazah Bha

Background: Tuberculosis is a global health problem associated with high morbidity and mortality. Rapid diagnosis of tuberculosis is essential for early disease management. Conventional methods like microscopy and culture are associated with low sensitivity and longer time to positivity respectively. The GeneXpert is an integrated device for the rapid detection of Mycobacterium tuberculosis and its sensitivity to rifampicin. We evaluated the performance of gene expert MTB/ RIF assay for the diagnosis of pulmonary and extrapulmonary tuberculosis.Methods: A prospective cross sectional study was carried out in the Department of Microbiology. Samples were subjected to smear microscopy by ZN staining, culture on solid (LJ) and liquid media (BacT Alert) and GeneXpert assay.Results: 122 pulmonary samples and 153 extrapulmonary samples collected from 275 patients were included in the study. Out of these, 48 samples were positive by both culture and Xpert assay and 2 samples were culture positive only. Out of 225 culture negative samples, 3 were positive by GeneXpert. The sensitivity for GeneXpert was much higher compared to smear micrscopy (96 Vs 46% respectively). The Xpert assay also detected 3 rifampcin resistant cases.Conclusions: The test appeared to be as sensitive as culture for the detection of tuberculosis in smear positive, smear negative and extrapulmonary tuberculosis. We recommend the use of GeneXpert assay for the early detection of tuberculosis. We conclude that the test is simple and routine staff can perform the test with minimal training.


Author(s):  
M. Reeta Devi ◽  
Babina Sarangthem ◽  
Keerthivasan .

Background: Thyroid lesions are one of the commonly encountered disorders in any hospital. Majority are non neoplastic and malignancy accounts for about 5-10%. Fine needle aspiration cytology is a simple, cost effective, reliable and minimally invasive tool for the evaluation of these lesions and it can differentiate benign from malignancy. Material and methods: This cross sectional study was conducted on the thyroid swelling attending the cytology OPD of Regional Institute of Medical Sciences (RIMS) during October, 2016 to October, 2019 a tertiary care hospital. All smears are air dried and stained with Giemsa stain. Results: The most common age group affected is 41-50 years of age followed by 31-40 years age group. Females outnumbered males with female to male ratio of 16.9:1. Out of 729 cases, colloid goiter constitute a total of 387 (53%), Hashimto's thyroiditis 318 cases (43.3%), adenomatous goiter (1.2%) and Graves disease contribute 1.1% Conclusion: Thyroid Swelling are very common clinical presentation. FNAC is a cost effective, reliable, easy to perform test with commendable sensitivity. It can spare patients to undergo unnecessary surgery. It also helps in differentiating solid from cystic lesions.


2021 ◽  
Vol 6 (2) ◽  
pp. 1517-1521
Author(s):  
Rajneesh Jha ◽  
Ram Kumar Mehata ◽  
Puru Koirala

Introduction: Tuberculosis is a common infection in our community. Tubercular pleural effusion is the second most common form of extrapulmonary tuberculosis. Among the several causes of exudative pleural effusison tubercular remains the most common form in clinical practice. The aim of this study was to evaluate the significance of lymphocyte-neutrophil ratio(LN ratio) in cases of exudative effusion for diagnosis of tubercular effusion. Methods: This was a hospital based cross sectional studydone in Patients at tertiary care hospital from 1st September 2020 to 1st april 2021after taking ethical clearance from institutional reviw committee. Convienience samplingwas done. Statistical Analysis of data like percentages and frequencies  were used for categorical variables. Mean and SD (standard deviation) were used for describing continuous variables. Inferential statistical tools like Chi-Square test and Student’s t-test were used. P-value of <0.05 was considered statistically significant. Results: out of 200 cases 75% were tubercular pleural effusion and these cases were found have high levels of LN ratio (0.89 ± 0.11 for females and 0.97 ± 0.14 for males) and ADA (137.79 ± 44.61for females and 147.61 ± 51.64 for males) and more than 90% sensitivity and specificity of LN ratio and ADA level. Conclusion: Exudative pleural fluid L/N ratio >0.75 is an efficient means of diagnosing tuberculous pleural effusion and its combination with ADA level gives us more accuracy and surety about the diagnosis of tubercular pleural effusion.


2021 ◽  
Vol 7 (3) ◽  
pp. 233
Author(s):  
Philipp Foessleitner ◽  
Herbert Kiss ◽  
Julia Deinsberger ◽  
Julia Ott ◽  
Lorenz Zierhut ◽  
...  

Pregnant women have an increased risk of vulvovaginal candidosis. Recurrent candidosis is under debate as a contributor to preterm birth, and vertical transmission may cause diaper dermatitis and oral thrush in the newborn. Apart from cultural methods, the gold standard for diagnosing candidosis is Gram staining, which is time-consuming and requires laboratory facilities. The objective of this prospective study was to validate a point-of-care vaginal yeast detection assay (SavvyCheckÔ Vaginal Yeast Test) and to evaluate it in asymptomatic pregnant women. We enrolled 200 participants, 100 of whom had vulvovaginal candidosis according to Gram stain (study group) and 100 were healthy pregnant controls (control group). Of these, 22 participants (11%) had invalid test results. The point-of-care test of the remaining 85 and 93 study participants in the study and control groups, respectively, showed a sensitivity of 94.1%, specificity of 98.9%, positive predictive value of 90.3%, and negative predictive value of 99.4% when compared with Gram stain. In conclusion, we found a high correlation between the SavvyCheckÔ Vaginal Yeast Test and Gram-stained smears during pregnancy. This suggests a potential role of this point-of-care test as a screening tool for asymptomatic pregnant women in early gestation.


2013 ◽  
Vol 24 (1) ◽  
pp. 27-31 ◽  
Author(s):  
Marissa L Becker ◽  
Laura H Thompson ◽  
Carla Pindera ◽  
Natalie Bridger ◽  
Carmen Lopez ◽  
...  

BACKGROUND: Approximately 26% of Canadians living with HIV are unaware of their status. Point-of-care (POC) HIV tests have been introduced to simplify and expand HIV testing.OBJECTIVE: To evaluate the feasibility and acceptability of POC testing in an emergency department (ED) setting in Winnipeg, Manitoba.METHODS: A cross-sectional study of unselected adults presenting to the ED at the Health Sciences Centre Hospital (Winnipeg, Manitoba) was performed. Study procedures included pre- and post-test counselling, administration of the INSTI HIV-1/HIV-2 Antibody Test (bioLytical Laboratories, Canada) and a brief questionnaire. Venous blood samples were collected from participants for confirmatory testing on all reactive and indeterminate specimens.RESULTS: In total, 501 adults participated in the study. The majority of participants were younger than 40 years of age, approximately one-half (48.5%) were women and 53% self-identified as Aboriginal. Nearly one-half (49.1%) of the participants had undergone previous HIV testing, although 63% of these tests were performed more than a year earlier. A total of seven individuals tested reactive with the POC test, all of whom were confirmed positive using serological testing (1.4%) and were linked to an HIV specialist within 24 h. Nearly all of the participants (96%) reported satisfaction with the test and believed it belonged in the ED (93%).CONCLUSIONS: Of the participants tested, 1.4% tested reactive for HIV, which is significantly higher than the reported prevalence in Manitoba and in other similar studies conducted in North America. Furthermore, all individuals were linked to timely care. The present study demonstrated that this particular busy tertiary care ED is an important and feasible location for HIV POC testing.


Author(s):  
Ambika R. Bhaskar ◽  
Mridula Solanki

Background: Immunization is one of the most cost-effective interventions to prevent the suffering that comes from avoidable sickness, disability and death. Outreach immunization services ensure that immunization is available to children who are unable to access a general practice in a timely fashion for their immunization events. Effective supervision and monitoring will help in improving quality and coverage of immunization.Methods: This was an observational cross-sectional study conducted in the rural field practice area of a tertiary care hospital. 50 outreach sessions held in various outdoor places including Anganwadi were supervised and monitored using checklist. 110 mothers and 20 stakeholders were interviewed. Immunization records were assessed.Results: Outreach immunization sessions were found to be of good quality. 89% children were fully immunized. ANMs and ASHAs were of the opinion that outreach session has significantly raised immunization coverage. 75.4% mothers had knowledge about services provided by outreach sessions.Conclusions: There was increase in immunization coverage due to outreach sessions. There is need for adequate supervision on safety injection practices and regular timely incentive to ASHA.


2020 ◽  
pp. 1-3
Author(s):  
Anup Latne ◽  
Prabhakar Jirvankar

Hypertension is a major public health problem all over the world. The incidence of hypertension is increasing year after year and the prevalence of hypertension is increasing day by day due to increased life expectancy and aging population and their sedentary lifestyle. Hypertension is known to cause microvascular changes and increased cardiovascular risk from it. Microalbuminuria possibly reflects a state of increased renal endothelial permeability and is an easily measured marker of rather diffuse endothelial dysfunction, low grade inflammation and vascular disease burden2. Microalbuminuria has been determined as an important prognostic indicator and has been reported to be associated with increased cardiovascular risk and progressive renal damage. Reliable data on the prevalence of microalbuminuria in the general population and its association with cardiovascular risk factors is limited. Till now, there is little data available regarding screening and early treatment of hypertensive patients with microalbuminuria, as in the case of microalbuminuric non diabetic subjects. With these perspective this cross sectional study of microalbuminuria in non-diabetic hypertensive patients was undertaken to study prevalence of microalbuminuria in Non Diabetic hypertensive patients. Objectives: To determine the prevalence of microalbuminuria in non-diabetic hypertensive patients and to correlate the presence of microalbuminuria with the patients of different clinical profiles. Materials and Methods: This was observational, cross sectional study of Patients diagnosed with hypertension either admitted in ward or attending OPD of Medical College and Tertiary Care Centre. Urine microalbumin creatinine ratio was used for estimation of microalbuminuria. Conclusion: It was proved that microalbuminuria prevalence was directly proportional to the duration of hypertension, the stage of hypertension. Prevalence of microalbuminria was low in ACE inhibitor and ARB treated hypertensive patients.


2020 ◽  
Vol 58 (232) ◽  
Author(s):  
Badri Rijal ◽  
Krishna Rana ◽  
Srijana KC ◽  
Jamuna Lamsal

Introduction: Orthopedic conditions include a range of condition varying from traumatic injuries, congenital anomalies, chronic back-pain, arthritis, rheumatologic conditions, and other. In Nepal, approximately 2.35 million people are living with musculoskeletal conditions in which 175,000 people are suffering with MSD from non-traumatic causes. The aim of the study is to observe the clinical and demographic pattern of orthopedic problems presenting in the hospital. Methods: A descriptive cross-sectional study was done in All Nepal Hospital Private Limited in the month of November. The data from the medical record section was retrospectively collected. Sample size of 384 was included and convenience sampling technique was used. The descriptive statistical analysis was done. Results: Eight hundred forty four cases were included in the study. Implant removal was the main condition for admission in the hospital 105 (12.44%) followed by Forearm Bone Fracture 84 (9.95%) and Cut Injury 64 (7.58%). Most cases presented during the time 6 PM to 12 AM 312 (36.96%). Conclusions: Most of the orthopedic cases presented in the evening and night time. Implant removal, forearm bone fracture and cut injury form the major bulk of the cases.


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