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Objective To analyze the disease burden of multidrug-resistant tuberculosis (MDR-TB) in China and regions with different income levels in the world from 1990 to 2019. Methods Using the Global Burden of Disease Study 2019 (GBD2019) results, the changes of the disease burden of MDR-TB in China and regions with different income levels in the world were described and analyzed using the Joinpoint Regression Program 4.8.0.1 software. Results From 1990 to 2019, the age standardized incidence, mortality and DALY rates in China and other areas with different income levels in the world basically showed a trend of first rising and then decreasing at the turning point of the late 20th century and early 21st century, except for low-income areas where the age standardized incidence rate showed an overall upward trend. In 2019, the incidence rate, mortality and DALY rate of MDR-TB in China were 9 times, 6.67 times and 6.89 times higher than those in high-income areas, respectively. The incidence rate in China was 6 times lower than that in low and middle-income areas, while the mortality and DALY rate in China were 26 times and 32.53 times lower than those in low-income areas, respectively. The age standardized incidence, mortality rate and DALY rate of MDR-TB in men were higher than those in women. Risk factors for the burden of MDR-TB disease included alcohol consumption, smoking, and high fasting blood glucose. Conclusion From 1990 to 2019, there are significant regional and gender differences in the disease burden of multidrug-resistant tuberculosis in China and regions with different income levels in the world. Multidrug-resistant tuberculosis is still a major challenge for tuberculosis control in the world. It is necessary to develop more effective control strategies and health care systems to deal with multidrug-resistant tuberculosis.
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Introduction: An estimated 9.9 million people fell ill with tuberculosis globally in 2020 with India and China contribu?ng a major percentage to the burden of TB. India is grouped under high TB, high HIV associated TB and MDR TB burden countries and 1.24 lakh fell ill with drug resistant TB out of which 56000 were started on second line treatment in 2020. Annually India accounts for 27% of missing TB cases. Diagnosis: The major forms of drug resistant TB that are of clinical importance are INH monoresistant TB, mul?drug resistant TB, pre- XDR TB and XDR TB.WHO approved newer molecular tests for MTB detec?on and drug suscep?bility tests. Treatment: Few newer drugs and few previously used drugs are showing promise when used in combina?on which have come up in recent years. Bedaquiline based regimens are showing improved cure rates. Conclusion: Guidelines based regimens should be strictly adhered to by both public and private TB case trea?ng physicians.
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La emergencia de cepas resistentes de Mycobacterium tuberculosis a múltiples drogas, las dificultades de su diagnóstico y tratamiento constituyen un desafío a la salud pública mundial. Para afrontar esta situación, se emplean nuevas drogas antituberculosis, como bedaquilina, pretomanid y delamanid, así como drogas repropuestas, como fluoroquinolonas, linezolid y clofazimina. Con base en la evidencia brindada por estudios multicéntricos, se han descubierto fármacos asociados a un mejor pronóstico de la tuberculosis drogorresistente y, recientemente, se ha propuesto una nueva clasificación, así como nuevos esquemas totalmente orales. En esta revisión, describimos los esquemas de tratamiento actuales y los aspectos farmacológicos prácticos necesarios a la hora de la prescripción de los nuevos regímenes de tratamiento de la tuberculosis drogorresistente.
The emergence of resistant strains of Mycobacterium tuberculosis to multiple drugs and the difficulties of their diagnosis and treatment constitute a challenge to global public health. To face this challenge, new anti-tuberculosis drugs, such as bedaquiline, pretomanid, and delamanid, as well as replacement drugs, such as fluoroquinolones, linezolid and clofazimine, are used. Based on the evidence provided by multicenter studies, drugs associated with a better prognosis of drug-resistant tuberculosis have been discovered and, recently, a new classification has been proposed, as well as new totally oral regimens. In this review, we describe current treatment regimens and practi cal pharmacological aspects required when prescribing new drug-resistant tuberculosis treatment regimens.
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ABSTRACT The emergence of resistant strains of Mycobacterium tuberculosis to multiple drugs and the difficulties of their diagnosis and treatment constitute a challenge to global public health. To face this challenge, new anti-tuberculosis drugs, such as bedaquiline, pretomanid, and delamanid, as well as replacement drugs, such as fluoroquinolones, linezolid and clofazimine, are used. Based on the evidence provided by multicenter studies, drugs associated with a better prognosis of drug-resistant tuberculosis have been discovered and, recently, a new classification has been proposed, as well as new totally oral regimens. In this review, we describe current treatment regimens and practical pharmacological aspects required when prescribing new drug-resistant tuberculosis treatment regimens.
RESUMEN La emergencia de cepas resistentes de Mycobacterium tuberculosis a múltiples drogas, las dificultades de su diagnóstico y tratamiento constituyen un desafío a la salud pública mundial. Para afrontar esta situación, se emplean nuevas drogas antituberculosis, como bedaquilina, pretomanid y delamanid, así como drogas repropuestas, como fluoroquinolonas, linezolid y clofazimina. Con base en la evidencia brindada por estudios multicéntricos, se han descubierto fármacos asociados a un mejor pronóstico de la tuberculosis drogorresistente y, recientemente, se ha propuesto una nueva clasificación, así como nuevos esquemas totalmente orales. En esta revisión, describimos los esquemas de tratamiento actuales y los aspectos farmacológicos prácticos necesarios a la hora de la prescripción de los nuevos regímenes de tratamiento de la tuberculosis drogorresistente.
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BACKGROUND: Multi-drug resistant tuberculosis has become major public health problem and obstacle to effective control of tuberculosis. Over a period of time, there are several landmark achievements including policy and system preparedness for universal access to TB care including mandatory noti?cation of TB cases, development of standard for TB care in India, comprehensive real time TB information management system-NIKSHAY, use of rapid molecular diagnostics, successful innovations in private sector engagement for TB care-Universal access to TB care. Objective was to ?nd out the challenges in initiation of treatment of Multi Drug Resistant-TB patients get admitted in ITKI Sanatorium Ranchi Jharkhand. METHODS: It was a hospital based cross sectional study carried out from August 2016 to Nov.2018 on Multi drug resistant tuberculosis patients admitted in MDR-TB centre Itki Sanatorium Ranchi after approved from institutional ethics committee. Total study subjects included in study was 64. RESULTS: Most of the study subjects 58 (90.6%) did not know about the MDR-TB. Most of the study subjects 40 (62.5%) had been given reports of CB-NAAT test on same day followed by study subjects 24 (37.5%) on alternate day. No one study subjects 64 (100%) had been given any type of incentive for travelling to pretreatment evaluation centre. In above table, most of the patients 51 (79.7%) had made payment for investigations at district hospital/ SDH level followed by 13 (20.3%) who were free of any expenditure for investigations. Most of the study subjects 60 (93.7%) were not visited by any health staff between ?nal diagnosis of MDR-TB and initiation of treatment for MDR-TB followed by subjects 4 (6.3%) who were being visited by health staff. Most of the study subjects 48 (75%) were unaware about the NIKSHAY POSHAN SCHEME for MDR-TB patients followed by subjects 16 (25%) who knew about the NIKSHAY POSHAN SCHEME for MDR-TB patients by means of various medium.
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ABSTRACT Background: Rapid molecular methods such as the line probe assay (LPA) and Xpert® MTB/RIF assay (Xpert) have been recommended by the World Health Organization for drug-resistant tuberculosis (DR-TB) diagnosis. We conducted an interventional trial in DR-TB reference centers in Brazil to evaluate the impact of the use of LPA and Xpert. Methods: Patients with DR-TB were eligible if their drug susceptibility testing results were available to the treating physician at the time of consultation. The standard reference MGITTM 960 was compared with Xpert (arm 1) and LPA (arm 2). Effectiveness was considered as the start of the appropriate TB regimen that matched drug susceptibility testing (DST) and the proportions of culture conversion and favorable treatment outcomes after 6 months. Results: A higher rate of empirical treatment was observed with MGIT alone than with the Xpert assay (97.0% vs. 45.0%) and LPA (98.2% vs. 67.5%). Patients started appropriate TB treatment more quickly than those in the MGIT group (median 15.0 vs. 40.5 days; p<0.01) in arm 1. Compared to the MGIT group, culture conversion after 6 months was higher for Xpert in arm 1 (90.9% vs. 79.3%, p=0.39) and LPA in arm 2 (80.0% vs. 83.0%, p=0.81). Conclusions: In the Xpert arm, there was a significant reduction in days to the start of appropriate anti-TB treatment and a trend towards greater culture conversion in the sixth month.
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Background: Multidrug resistant tuberculosis (MDR TB) requires treatment with expensive, toxic, anti-tubercular drugs over a longer duration. Adverse drug reaction (ADR) to second line anti tubercular drugs affect compliance and hence treatment outcome. The primary objective of this study was to analyse ADRs and if these resulted in change or permanent suspension of drug. We also analysed treatment outcome, treatment adherence and co morbidities associated with MDR patients.Methods: A retrospective study was carried out at DOTS plus site in department of Pulmonary Medicine, Goa Medical College on registered MDR cases from November 2011 to October 2016. Socio demographic profile, diagnosis, treatment and ADRs were evaluated, ADRs were evaluated for frequency, causative drugs, management aspect and impact on treatment outcome.Results: Out of 201 MDR cases, 99 cases had 167 ADRs. Majority of patients having ADRs were in age group of 30-50 years with mean眘tandard deviation 36.82�.47, 59 (59.59%) males and 40 (40.40%) females, 92 (92.92%) retreatment cases and 7 (7.07%) newly diagnosed. Majority of ADRs were vomiting 31(18.56%), joint pain 31 (18.56%), gastritis 21 (12.57%), hearing impairment 16 (9.58%), numbness in leg 14 (8.38%), depression 12 (7.18%). Treatment outcome of cases with ADR was cured 45 (45.45%), treatment completed16 (16.16%), progressed to XDR 6 (6.06%), transferred out 5 (5.05%), defaulter 14 (14.14%), death 13 (13.13%).Conclusions: It is very important to recognise at the earliest and treat the ADRs with least modification of the treatment regimen to have a good treatment outcome.
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The emergence of drug resistant mycobacterium has become a significant public health problem creating an obstacle to effective tuberculosis (TB) control. Freedom from TB is possible with timely, regular, complete treatment, with assurance, prevention and management of side effects of antitubercular drugs. Present study was conducted to evaluate common and rare adverse drug reactions (ADR) of CAT IV and CAT V to analyse demographic, radiological and bacteriological profile and treatment outcome in MDR & XDR patients. We wanted to evaluate the common and rare adverse drug reactions of intensive phase treatment of Multi Drug Resistant Tuberculosis (MDR) and Extensively Drug Resistant Tuberculosis (XDR) as per WHO-UMC Causality Assessment Scale.METHODS76 patients of MDR and XDR Tuberculosis were admitted in DR-TB (Drug Resistant TB) centre, Burdwan Medical College and Hospital and the adverse drug reaction profile of 2nd line drugs were analysed during the intensive phase from April 2016 to September 2017 after fulfilling the inclusion and exclusion criteria. Treatment was given as per the guidelines of Revised National TB Control Program PMDT (Programmatic Management of Drug-Resistant TB).RESULTSAdverse drug reactions on GI system were nausea 73 patients (96.10%), vomiting 70 (92.10%), acidity 41 (53.9%), and sulphurous belching and hepatitis 1 (1.31%) each. Peripheral neuropathy, hearing deficit, myopathy, skin rashes, hepatitis, nephrotoxicity, cardiac toxicity and convulsion were also observed. In psychosis, 3 (3.95%) had depression and made suicidal attempt. 1 each (1.31%) in hallucination and paranoia. 5 patients (6.58%) had blurring of vision, 2 patients (3.95%) had redness of eyes and one (1.31%) had eye irritation. Reactions were common in first 60 days of the regimen and in patients with BMI ≤18.CONCLUSIONSVigilant monitoring is required for these patients during the initial period and sputum smear and culture conversion is very well correlated with clinical and radiological improvement.
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BACKGROUND Tuberculosis (TB) is an infectious disease caused by the bacterium Mycobacterium tuberculosis, and the number of new cases of multidrug resistant TB (MDR-TB), pre extensively drug-resistant TB (pre-XDR-TB) and extensively drug-resistant TB (XDR-TB) has increased considerably worldwide. OBJECTIVES Herein, using 156 M. tuberculosis isolates from 106 patients previously classified as MDR or pre-XDR or XDR isolates, we investigated the genetic mutation profiles associated with phenotypic resistances in patients with MDR-TB, pre-XDR-TB and XDR-TB, treatment outcomes and resistance evolution. METHODS Molecular analyses were performed by partial sequencing of the rpoB, katG, gyrA, gyrB, rrs genes and analysis of the fabG-inhA promoter region. Clinical, epidemiologic and demographic data were obtained from the TB Notification database system of São Paulo (TB-WEB) and the Information System for Special Tuberculosis Treatments (SITE-TB). FINDINGS Drug resistance was attributed to previously known mutations and a novel Asp449Val mutation in gyrB was observed in four isolates from the same patient. Ten patients had more than one isolate evaluated and eight of these patients displayed resistance progression. MAIN CONCLUSIONS The present study is the first to report the frequency of mutations related to second-line drug resistance in MDR-TB, pre-XDR-TB and XDR-TB isolates. The results could lead to the improvement of available technologies for the rapid detection of drug resistant TB.
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Humans , Male , Female , Adolescent , Adult , Young Adult , Tuberculosis, Multidrug-Resistant/microbiology , Drug Resistance, Multiple, Bacterial/genetics , Mutation/genetics , Mycobacterium tuberculosis/drug effects , Mycobacterium tuberculosis/genetics , Antitubercular Agents/pharmacology , Socioeconomic Factors , Brazil , Microbial Sensitivity Tests , Extensively Drug-Resistant Tuberculosis/microbiology , Middle Aged , Mycobacterium tuberculosis/isolation & purificationABSTRACT
Background: India is the country with highest burden of TB. There is paucity of data as far as Pediatric TB is concern. TB in children directly reflects intensity of on-going transmission of TB in a given community. This study was done including indoor cases of Pediatric pulmonary TB in a medical college hospital, a tertiary care institute in the city of Mumbai. The aim and objectives of this study the clinical profile and outcome of Pediatric pulmonary tuberculosis/MDR TB in an indoor setting of a tertiary care center. It was a clinical observational study in a setting of medical college hospital.Methods: All admitted children with newly diagnosed pulmonary TB were included in study. A detailed clinical analysis was done. Statistical Analysis Association between two qualitative data was assessed by Chi-Square test, Fisher's exact test for all 2 X 2 tables where Chi-Square test was not valid due to small counts. Comparison of quantitative data measured between two outcomes was done using unpaired t-test. PSPP version 0.8.5 was used for statistical analysis.Results: Total of 41 patients with pulmonary TB were included in the study, making admission rate of 0.7% of total admission. Three out of 41 children had MDRTB making incidence 7% of total TB patients. Severe acute malnutrition was a major risk factor for dissemination of disease and mortality (p value 0.031and 0.0017).Conclusions: The study estimates 0.7% admission rate and 7% as incidence of MDRTB in indoor patients. Severe malnutrition was found to be risk factor for dissemination of disease [p value 0.031].
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BACKGROUND - Multi-drug resistant tuberculosis (MDR-TB) is an increasing health problem in India. Globally,3.5% of new TB cases and 18% of previously treated cases had MDR/RR-TB.(GLOBAL TUBERCULOSIS REPORT 2018). As per the India TB Report 2018 the estimated incidence of MDRTB/RR in India was approximately 1,47,000.Outcome of MDR patient put on MDR regime is poor due to high cost, long duration of treatment, and various side effect of second line ATT. MATERIAL & METHOD - Study comprised patients who were diagnosed MDR by culture and DST method from RNTCP accredited lab and initiated CAT–IV treatment in D.R.TB Centre, Department of Tuberculosis & Chest Diseases, S. N. Medical College, Agra. Detailed history and pre clinical evaluation as per guideline were done and at the end of 3rd ,4th,5th and 6th month sputum were send for AFB staining and culture. RESULT – Out of 109 MDR patient put on CAT-IV, culture conversion at 3rd month occur in 52(47.70%) patients, at 4th month in 58 patients (53.21%), and in 5th month 66 patients (60.55%). Out of 109 MDR TB patients 12 patients (11.01%) were found suspected XDR. CONCLUSION – MDR TB is major health problem worldwide. Due to less efficacy and more side effect of second line ATT, longer duration of treatment, MDR TB is difficult to treat even with free supply of ATT through DOTS PLUS. Close attention is needed for early diagnosis of MDR TB , and adequate clinically monitoring of during treatment is essential.
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Background: The aims and objectives were to study the progression from tuberculosis to multi drug resistance-TB in revised national tuberculosis control programme: perspectives from health system care givers.Methods: The study was carried out in TB Sanatorium ITKI, Sadar Hospital Ranchi and RIMS Ranchi. The interview of various health personnel including SAHIYAs was taken using a semi-structured questionnaire based on programmatic management of multi drug resistant tuberculosis guidelines -2016.Results: Among Doctors knowledge level was good compared to other health personnel which had mean value 7.33 (±2.79), laboratory technician 3.45 (±2.64), STS 4.67 (±1.59), Sahiya 2.1 (±0.73). Regarding capacity enhancement level all health personnel needed refresher trainings in which doctors got 4.67 (±1.58), laboratory technician 3.45±2.64, STS 1.72±0.34, and Sahiya 0.5±0.52. Specially sahiya needs training regarding MDR-TB because they are the connecting link between health system and community. Regarding execution level, Doctors got 1.86 (±0.74), laboratory technician 1.64 (±0.56), STS 1.64 (±0.56) and Sahiya (ASHA) 2.2 (±0.44). Sahiya were better than other health personnel at execution level.Conclusions: Advocacy, communication, and social mobilization are important aspects of TB control, Policy makers and administrators should be sensitized for need of adequate and sustained funding for TB control to ensure quality capacity building. They need to provide continuous and quality training of staff at different levels and retention of trained staff and periodic reviews to identify gaps and take corrective steps.
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Background: Multidrug resistant tuberculosis (MDR-TB) has become a major public health problem. It is associated with significant morbidity and mortality. The treatment success rate worldwide is around 50%.Methods: This cross-sectional study was conducted on all MDR-TB patients who were registered and being treated under PMDT services in Amritsar district from 1st April 2014 to 31st March 2015. The treatment outcome with their socio-demographic determinants was ascertained. Data management and analysis was done by using Microsoft excel and SPSS.Results: Out of 87 MDR-TB patients, 57 (65.5%) were males and 30 (34.4%) were females. The various treatment outcomes observed were- 30 (34.5%) cured, 19 (21.8%) treatment completed, 18 (20.7%) died, 13 (14.9%) defaulted, 4 (4.6%) shifted to XDR TB regime and 3 (3.4%) failure.Conclusions: On statistical analysis, it was observed that age (p=0.000), marital status (p=0.024), educational status (p=0.011) and occupation (p=0.002) were significantly associated with the treatment outcome. Other factors like sex, type of family and socio-economic status did not affect the treatment outcome.
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Tuberculosis caused by Mycobacterium tuberculosis has remained a major global health problem worldwide. TB requires prolonged period of time for isolation by conventional culture methods. The emergence and spread of multi drug resistant (MDR-TB) poses great threats and challenges in controlling the infection. MDR-TB is resistant to both first line drugs rifampicin and isoniazid. PCR tests are based on targeting the mutation in rpoB, katG and inhA genes which can detect resistance to these drugs. To compare microscopy, conventional culture and Line probe assay for the detection of M. tuberculosis & detect rifampicin and isoniazid resistance using Lineprobe assay in various clinical samples. A total of 347 suspected patients of tuberculosis were included in the study. Demographic details & clinical presentation was noted. Various samples were received & processed for ZN staining, culture on LJ media and Line probe assay. Out of 347 cases, majority of cases were in the age group of 51-60 years (18.4%). Majority of the population was males (65.1%). Among suspected tuberculosis patients, cough with expectoration (55.9%) was the commonest complaint. Microscopy was positive in 17.3%, conventional culture was positive in 16.1% and line probe assay was positive in 26.2%. Out of 347, 91 were diagnosed with MTB, out of which 85.7% were sensitive to both rifampicin and isoniazid whereas 14.3% showed resistance to either rifampicin / isoniazid or both. LPA & direct microscopy are a good screening method for early diagnosis and detection of drug resistance but are not a complete replacement of conventional culture which is still a gold standard.
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Background: There were 4.1% of all new cases and 19% of previously treated patients were diagnosed with either multidrug resistant or rifampicin resistant tuberculosis in 2016. In the state of Uttar Pradesh, there were 2.16 new cases and 44,531 previously treated cases. The objectives of the study were to assess the predisposing factors, causality assessment, severity grading and avoidability of the adverse drug reactions (ADRs) of the antitubercular drugs in MDR-TB patients in a tertiary care hospital of northern India.Methods: This prospective observational study was conducted for 12 months at a tertiary care hospital. The patients with MDR tuberculosis on treatment with DOTS Plus regimen under RNTCP and who met the inclusion exclusion criteria were recruited after informed consent. ADRs were monitored daily till the patients remained admitted and thereafter monthly. Predisposing factors were recorded. Causality assessment was performed by Naranjo scale and WHO UMC scale, severity by Hartwig’s scale and avoidability by Halla’s scale.Results: There were 115 patients were recruited, 70 developed at least one ADR. 98 ADRs were reported. The commonest ADR reported were – gastrointestinal (38.76%), neurological (21.24%) and hepatobiliary (8.16%). Diabetes and HIV predisposed to development of ADRs. 58.18% ADRs were classified as possible and 37.5% as probable by Naranjo’s scale. 51.02% ADRs were classified as probable and 42.83% as possible by WHO-UMC. 56% were classified as mild, 36% moderate, and 6% severe via Hartwig’s scale. 51 ADRs were classified as avoidable and 40 ADRs were possibly avoidable.Conclusions: Monitoring and assessment of ADRs is necessary to promote awareness, curb resistance and maintain adherence.
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Background: Between 2006 and 2015, the prevalence of MDR-TB has been found to be as high as 39.9% in some states. Approximately 35.8% of all previously treated patients developed MDR-TB. The objective of the present study was to identify demographic and health characteristics of patients as well as incidence and pattern of the adverse drug reactions caused by antitubercular drugs in MDR-TB patients in a tertiary care hospital of northern India.Methods: This 12 months study of observational study was conducted at a DOTS centre. MDR-TB diagnosed patients treated with DOTS Plus regimen were enrolled after getting informed consent. Patient information was recorded. Patient follow-up was conducted to identify the incidence and pattern of ADRs.Results: A total of 115 patients were enrolled. Maximum number of cases were in the 31-40 age group (25.21%) followed by the 41-50 age group (20.86%). 76 (66.08%) were males and 39 (33.91%) were females. 52 patients (45.21%) had concomitant diseases, out of which 15 (13.04%) were HIV positive and 21 (18.26%) were diabetic. 70 patients (60.86%) developed ADRs. The adverse drug reaction that were seen are -38 (38.76%) cases of gastrointestinal adverse drug reactions, 8 (8.16%) jaundice/hepatitis, 7 (7.14%) impaired hearing/vertigo, 21 (21.24%) central nervous system adverse drug reaction, 6 (6.12%) peripheral neuropathy, 6 (6.12%) rash and itching, 5 (5.10%) arthralgia, 3 (3.06%) renal impairment, 2 (2.04%) hypothyroidism and 2 (2.04%) blurred vision.Conclusions: Determining which population groups are affected most by ADRs can help physicians to better monitor and make an early diagnosis to reduce ADR-related morbidity and mortality.
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Background: Despite availability of good quality anti-tubercular drugs and its administration through Directly Observed Therapy Short Course (DOTS) strategy of Revised National Tuberculosis Control Programme (RNTCP), tuberculosis remains a major cause of morbidity and mortality in India. The emergence of drug resistance necessitates the timely detection of susceptibility of anti-TB drugs. This can help in appropriate modification in treatment strategies.Methods: A total of 50 patients of pulmonary TB with AFB positive sputum smears attending the OPD of TB and Chest department of B.R.D. Medical College, Gorakhpur were included. Patients were grouped based on history into new (cat-I) and previously treated patients (cat-II). Cat-II patients were further subdivided into defaulter, treatment failure and relapse groups. The culture and DST of AFB positive sputum smears of these patients was done in VersaTREK™®. At the end of study, patients were grouped according to age, sex, category and drug sensitivity pattern for Isoniazid (INH) and Rifampicin (RIF) viz mono resistance (resistance to either INH or RIF) or multi drug resistance (M.D.R.) and the resultant data were analysed.Results: Of the total 50 patients included in this study, 18 (36%) patients were sensitive to both the drugs INH and RIF, of which 11 (22%) were of cat-I and 7 (14%) of category-II. Twenty-two (44%) patients were resistant to INH only of which 8 (16%) were of cat-I and 14 (28%) of cat-II. One (2%) case of cat-I showed resistance to RIF only, while M.D.R. type of resistance is seen in 1 (2%) patient of cat-I and 8 (16%) patients of cat-II. Pattern of resistance to both INH and RIF together (i.e. M.D.R. type) showed significant difference between cat-I and cat-II.Conclusions: Most of the patients showing resistance to INH, RIF or both INH and RIF (M.D.R.) belonged to category-II (previously treated) patients.
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Objectivo: Evaluar la utilidad de Anyplex™II_MTB/MDR/XDR para la detección de Mycobacterium tuberculosis y sensibilidad a medicamentos de primera y segunda línea, además del impacto en la conducta terapéutica en pacientes con sospecha de tuberculosis pulmonar atendidos en una institución de alta complejidad de Medellín, 2014-2015. Material y Metodos: Estudio descriptivo de corte trasversal retrospectivo, de pacientes en cuyo proceso de atención se les realizó: baciloscopia, cultivo Ogawa- Kudoh, prueba molecular Anyplex™II_MTB/MDR/XDR y registro adecuado de historia clínica. Se realizaron medidas estadísticas descriptivas univariadas y de validez diagnóstica. Resultados: Se incluyeron 156 muestras de 154 pacientes, de los cuales el 65,6% fueron hombres. El diagnóstico de ingreso más frecuente fue el Virus de la Inmunodeficiencia Humana (VIH) (46,1%). La sensibilidad y especificidad global fue del 96,36% (IC 95%. 90,51 - 100) y 90,51% (IC 95%: 83,62 - 96,38) respectivamente. Se detectó algún tipo de resistencia en el 12,6%. El 57% de los resultados fueron tomados en cuenta por el médico tratante para definir conductas terapéuticas. Discusión: Se obtuvo una sensibilidad mayor respecto a otros estudios previos. Entre las limitaciones a destacar están: el diseño retrospectivo y la no disponibilidad de medios de cultivo líquido (MIGIT). Conclusión: Anyplex™II_MTB/MDR/XDR fue útil en la identificación del complejo M. tuberculosis y sensibilidad a medicamentos en muestra directa. El resultado de la prueba influyó en la toma de conductas terapéuticas en más de la mitad de los pacientes con resultados positivos. La implementación de nuevas ayudas diagnósticas, deben estar en concordancia con las necesidades en la atención del paciente.
Objective: To evaluate the utility of Anyplex™II_MTB/MDR/XDR for detection of Mycobacterium tuberculosis and drug susceptibility testing to first and second line, and the impact on the therapeutic approach, in patients with suspected pulmonary tuberculosis at a reference hospital. Medellin, 2014-2015. Material and Methods: This is a retrospective, descriptive, observational study in patients that during its hospitalization were studied by: ZN-smear, Ogawa-Kudoh culture, Anyplex™II_MTB/MDR/XDR assay and had an adequate record of medical history. Univariate descriptive statistics was performed and accuracy of the test was analyzed. Results: 156 samples of 154 patients were included, 65.6% were men. The most frequent diagnosis of admission was the Human Immunodeficiency Virus (46.1%). Sensitivity and specificity was 96.36% (95% CI 90.51 to 100) and 90.51% (95% CI 83.62 to 96.38) respectively. Some type of resistance was found in 12.6% of cases. 57% of the results were taken into account to make treatment decisions. Discussions: The sensitivity was higher than regarding in previous studies were obtained, comparing with cultures available at institution. Among limitations, this study was retrospective and the unavailability liquid culture medium (MIGIT). Conclusions: Anyplex™II_MTB/MDR/XDR was useful in the identification of mycobacteria and drug susceptibility in direct sample. The result influenced therapeutic decisions in more than half of patients with positive result. The implementation of new diagnostic aids must be in accordance with the needs in patient care.
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Humans , Male , Adult , Middle Aged , Tuberculosis , Polymerase Chain Reaction , Mycobacterium tuberculosis , Tuberculosis, Pulmonary , Tuberculosis, Pulmonary/therapy , Clinical Laboratory Techniques , Hospital CareABSTRACT
La tuberculosis (TB) es una enfermedad que representa un gran problema de salud pública en países en vías de desarrollo, como lo es el Ecuador, en el que, pese a una incidencia cada vez menor de casos reportados, sigue presente dentro de los grupos vulnerables de la población, como son los pacientes inmunodeprimidos, e incluso existen formas de difícil tratamiento como las multidrogorresistentes (TB-MDR). En este estudio presentamos la frecuencia de casos diagnosticados positivos a través del uso del kit Xpert MTB/RIF (GeneXpert®, Cepheid Innovation) y la frecuencia de casos resistentes a la rifampicina (Rifr). De este estudio, evidenciamos la aplicabilidad y utilidad del ensayo molecular para la detección de TB en muestras pulmonares y extrapulmonares, consiguiendo resultados de positividad del 13 %, y de ellos 7 % Rifr, resultados que superan los obtenidos con técnicas tradicionales de laboratorio.
The tuberculosis (TB),is a major Public Health Issue in the Developing Countries, like Ecuador, in which, in spite of the low incidence of reported infections, TB still exist among the vulnerable population groups, like the immune compromised patients, and also as the multidrug-resistant TB (MDR-TB). In this study, we present the frequency of positive diagnosed cases, using the Xpert MTB/RIF Assay kit (GeneXpert®, Cepheid Innovation) and the frequency of Rifampicin-resistant cases (Rifr). From this study, we evidenced the applicability and utility of this assay in the TB detection in pulmonary and extra-pulmonary samples: 13% were TB positive and 7 % of them were Rifr. These results surpass those obtained through traditional laboratory techniques.
Subject(s)
Humans , Reagent Kits, Diagnostic , Tuberculosis , Tuberculosis, Pulmonary , Risk Groups , Mycobacterium , IncidenceABSTRACT
Abstract Tuberculosis, in particular drug-resistant tuberculosis, is of global concern due to the high mortality and morbidity associated with it annually. The aim of this study was to determine the prevalence of and the risk factors for multidrug-resistant tuberculosis in Iran and its neighboring countries. Four databases (PubMed, BioMed Central, EMBASE, and Web of Science) were searched using key terms. Nineteen eligible articles were identified, of which 12 and seven were used for quantitative and qualitative analysis, respectively. The overall pooled estimate of the prevalence of multidrug-resistant tuberculosis, including both new and previously treated tuberculosis cases, in Iran, Iraq, Turkey and Pakistan was 16% (95% confidence interval [CI] 11-20). The patients with a previous tuberculosis treatment history (odds ratio [OR] = 6.45; 95% CI 5.12-7.79), those aged <45 years (OR = 1.57; 95% CI 1.12-2.03), and those who were males (OR = 1.83; 95% CI 1.19-2.48) had an increased pool risk of developing multidrug-resistant tuberculosis. The forest plot revealed that the pooled odds for the development of multidrug- resistant tuberculosis were 2.01 (95% CI 1.65-2.36). Poor adherence to treatment was one of the predictors of unsuccessful treatment outcomes. Multidrug-resistant tuberculosis is a great concern for public health programs in many countries globally, including those included in this review. The risk factors for the development of multidrug-resistant tuberculosis, specifically a previous tuberculosis treatment history, should be targeted through the implementation of specialized interventions.