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1.
Artigo | IMSEAR | ID: sea-223522

RESUMO

Background & objectives: Female genital tuberculosis (FGTB) is an important variety of extrapulmonary TB causing significant morbidity, especially infertility, in developing countries like India. The aim of this study was to evaluate the laparoscopic findings of the FGTB. Methods: This was a cross-sectional study on 374 cases of diagnostic laparoscopy performed on FGTB cases with infertility. All patients underwent history taking and clinical examination and endometrial sampling/biopsy for acid-fast bacilli, microscopy, culture, PCR, GeneXpert (only last 167 cases) and histopathological evidence of epithelioid granuloma. Diagnostic laparoscopy was performed in all the cases to evaluate the findings of FGTB. Results: Mean age, parity, body mass index and duration of infertility were 27.5 yr, 0.29, 22.6 kg/m2 and 3.78 years, respectively. Primary infertility was found in 81 per cent and secondary infertility in 18.18 per cent of cases. Endometrial biopsy was positive for AFB microscopy in 4.8 per cent, culture in 6.4 per cent and epithelioid granuloma in 15.5 per cent. Positive peritoneal biopsy granuloma was seen in 5.88 per cent, PCR in 314 (83.95%) and GeneXpert in 31 (18.56%, out of last 167 cases) cases. Definite findings of FGTB were seen in 164 (43.86%) cases with beaded tubes (12.29%), tubercles (32.88%) and caseous nodules (14.96%). Probable findings of FGTB were seen in 210 (56.14%) cases with pelvic adhesions (23.52%), perihepatic adhesions (47.86%), shaggy areas (11.7%), pelvic adhesions (11.71%), encysted ascites (10.42%) and frozen pelvis in 3.7 per cent of cases. Interpretation & conclusions: The finding of this study suggests that laparoscopy is a useful modality to diagnose FGTB with a higher pickup rate of cases. Hence it should be included as a part of composite reference standard.

2.
J. vasc. bras ; 20: e20210008, 2021. tab, graf
Artigo em Inglês | LILACS | ID: biblio-1279376

RESUMO

Abstract Background Variations in the upper limb arterial pattern are commonplace and necessitate complete familiarity for successful surgical and interventional procedures. Variance in the vascular tree may involve any part of the axis artery of the upper limb, including the axillary artery and brachial artery or its branches, in the form of radial and ulnar arteries, which eventually supply the hand via anastomosing arches. Objectives To study the peculiarities of the arterial pattern of the upper limb and to correlate them with embryological development. Methods The entire arterial branching of forty-two upper limbs of formalin fixed adult human cadavers was examined during routine dissection for educational purposes, conducted over a 3-year period in the Department of Anatomy, Lady Hardinge Medical College, New Delhi. Results The study found: 1) One case in which a common trunk arose from the third part of the axillary artery, which immediately splayed into four branches (2.4%); 2) High division of the brachial artery into ulnar and radial arteries, in 3 cases (7.1%); 3) Pentafurcation of the brachial artery into ulnar, interosseus, radial, and radial recurrent arteries and a muscular twig to the brachioradialis in 1/42 cases (2.4%); 4) Incomplete Superficial Palmar arch in 3/42 cases (7.1%); and 5) Presence of a median artery in 2/42 case(4.8%) Conclusions This study observed and described the varied arterial patterns of the upper limb and identified the various anomalous patterns, supplementing the surgeon's armamentarium in various surgical procedures, thereby helping to prevent complications or failures of reconstructive surgeries, bypass angiography, and many similar procedures.


Resumo Contexto As variações no padrão arterial dos membros superiores são comuns e, assim, necessitam de total familiaridade para que os procedimentos cirúrgicos e de intervenção sejam bem-sucedidos. A variância na árvore vascular pode envolver qualquer parte da artéria axial dos membros superiores, incluindo a artéria axilar, a artéria braquial ou os seus ramos, na forma das artérias radial e ulnar, as quais, em algum momento, suprem as mãos através dos arcos anastomosados. Objetivos Avaliar as peculiaridades do padrão arterial dos membros superiores e correlacioná-las ao desenvolvimento embriológico. Métodos Foram examinados os ramos arteriais completos de 42 membros superiores de cadáveres adultos conservados em formalina, os quais eram rotineiramente dissecados para fins educacionais durante 3 anos no Departamento de Anatomia Lady Hardinge Medical College, Nova Delhi. Resultados O estudo apresentou cinco desfechos. 1. Foi constatado um caso em que um tronco comum surgiu da terceira parte da artéria axilar que imediatamente se disseminou em quatro ramos (2,4%). 2. Houve divisão maior da artéria braquial em artérias ulnar e radial em três casos (7,1%). 3. Em um caso, ocorreu pentafurcação da artéria braquial em ulnar, interóssea, radial, radial recorrente e de um galho muscular em braquiorradial (2,4%). 4. Foi constatado arco palmar superficial incompleto em três dos 42 casos (7,1%). 5. Foi observada a presença da artéria mediana em 2 dos 42 casos (4,8%). Conclusões Este estudo compreende o padrão arterial do membro superior e identifica os diversos padrões anômalos para agregar ao arsenal terapêutico de cirurgiões para diversos procedimentos cirúrgicos, com o objetivo de combater quaisquer complicações ou falhas de cirurgias reconstrutivas, de angiografias de cirurgias de revascularização e muitas outras.


Assuntos
Humanos , Artéria Axilar/anatomia & histologia , Artéria Braquial/anatomia & histologia , Variação Anatômica , Artéria Axilar/embriologia , Artéria Braquial/embriologia , Procedimentos de Cirurgia Plástica , Extremidade Superior/anatomia & histologia , Extremidade Superior/embriologia
3.
Artigo | IMSEAR | ID: sea-208026

RESUMO

Background: Objective of this study was to calculate the maternal mortality rate in our hospital and to assess the epidemiological aspects and causes of maternal mortality to further analyse ways to reduce the maternal mortality rate (MMR).Methods: This was a retrospective analytical study done in the department of obstetrics and gynecology, MLN Medical College and District Women Hospital, Prayagraj over a time period of 10 years i.e., October 2009 to October 2019. Retrospective analysis and evaluation of the medical records and statistics was done to find out and collect specific causes of maternal deaths in the give time period.Results: There were 357 maternal deaths from October 2009 to October 2019. Maternal mortality rate in the study was calculated to be 498.42 per 1 lakh live births. Maximum deaths were in 21-30 years age group with multipara, unbooked and illiterate cases. Majority of the deaths reported were from direct causes of maternal mortality i.e., hemorrhage, hypertensive disorders and sepsis.Conclusions: In the selected hospitals, the mean maternal mortality rate in the study period was 498.42/100000 births. 71.4% had direct cause and 21.56% had indirect cause of maternal mortality several factors like regular antenatal visits, early identification of high-risk cases, timely referral, institutional deliveries, adequate post-partum care and follow-up can contribute to decrease the maternal mortality rate effectively.

4.
Artigo | IMSEAR | ID: sea-207664

RESUMO

Background: Recurrent Miscarriage is defined as three or more failed clinical pregnancies at less than 20 weeks of gestation or fetal weight less than 500 grams that ends spontaneously. Ovarian reserve demonstrates reproductive potential and includes FSH, estradiol, inhibin B, and S. AMH levels. Women with very low AMH levels may have altered folliculogenesis that may influence early implantation to increase the risk of miscarriage. This study aimed to determine the serum AMH levels in patients with recurrent miscarriage and pregnancy outcomes in low (<1 ng/ml), normal (1-3.5 ng/ml) and high (>3.5 ng/ml) AMH groups and to evaluate the role of serum ovarian biomarkers in prediction of miscarriages.Methods: This was a case-control study conducted over a time period of 1 year, on 120 women attending the antenatal clinic in department of obstetrics and gynecology, Swaroop Rani Nehru Hospital, Prayagraj. The patients were divided into two groups, Group 1 (n=80) included women with previous history of abortions and Group 2 (n=40) included women with no history of abortions. S. AMH levels were analyzed and compared in both the groups.Results: In the present study, a significant negative correlation was seen between S. AMH and rate of miscarriages (p <0.05). Low AMH values were observed in patients with history of previous pregnancy loss.Conclusions: Diminished ovarian reserve contributes to recurrent pregnancy loss and should be considered part of the work-up for RPL. AMH levels in recurrent miscarriage patients were lower than those in a normal population.

5.
Indian Pediatr ; 2019 Dec; 55(12): 1062-1065
Artigo | IMSEAR | ID: sea-199114

RESUMO

Objective: To evaluate utility of XpertMTB/RIF in bronchoalveolar lavage fluid in childrenwith probable pulmonary tuberculosis. Methods: Children with probable pulmonarytuberculosis with negative smear and Xpert on induced sputum/gastric aspirate weresubjected to bronchoalveolar lavage (BAL) for Xpert assay and mycobacterial liquid culture.Data of children <14 y undergoing bronchoscopy for suspected MDR-TB (n=12) were alsoanalyzed. The sensitivity of Xpert in BAL fluid for diagnosis of probable and confirmedpulmonary tuberculosis was calculated with clinico-radiological diagnosis and culture as goldstandards, respectively. Results: Of 41 enrolled children, 24 (58.5%) had Xpert positive inBAL fluid and 11 (26.8%) had culture confirmed tuberculosis (BAL fluid;10; sputum,1). Thesensitivity of Xpert in BAL fluid among probable and culture confirmed tuberculosis caseswas 58.5% (24/41) and 81.8% (9/11), respectively. Conclusion: Xpert in bronchoalveolarlavage fluid has good sensitivity in both probable and confirmed pulmonary tuberculosis inchildren

6.
Artigo em Inglês | IMSEAR | ID: sea-170153

RESUMO

Background & objectives: Tuberculosis (TB) is a common infection in patients on haemodialysis. There is a definite role of treatment of latent TB (LTB) in these patients. However, diagnosis of LTB in these patients by tuberculin skin test (TST) is unreliable. There is suggestion that interferon gamma release assay (IGRA) will be more reliable test for diagnosis of LTB in this setting. Thus, we evaluated value of IGRA and TST for the diagnosis of LTB in patients on dialysis in an Indian setting. Methods: Patients with end stage kidney disease on dialysis were included. Patients with active TB were excluded. Each patient was subjected to TST (induration of ≥10 mm was taken as positive) and QuantiFERON TB Gold In-Tube test (QFT-GIT) for diagnosis of LTB. Results: A total of 185 patients were included; 129 (69.7%) were males and mean age was 36.7 ± 12.3 yr. Past history of TB was present in 18 (9.7%) patients. One hundred and thirty four (72.4%) patients had scar of BCG vaccination. QFT-GIT test was positive in 66 (36%), TST in 32 (17%) and both in 13 (7%) patients. Of the 66 patients positive with QFT-GIT, only 13 (19.6%) were positive for TST. Of the 32 patients positive with TST, only 13 (40.6%) were positive with QFT-GIT; 100 (54%) patients were negative for both the tests. Overall, 85 (45.9%) patients were positive for either of the two tests. Poor agreement was shown between the two methods. On logistic regression analysis, odds of QFT-GIT to be positive in patients with BCG vaccination was 1.23 and with history of TB 0.99, both being insignificant. odds of tuberculin skin test to be positive in patients with BCG vaccination was 1.04 and with history of TB 0.99, both again being insignificant. Interpretation & conclusions: Our findings showed that more number of patients (36%) on haemodialysis were positive for QuantiFERON Gold In-Tube test as compared to TST (17%). There was poor agreement between the two tests. no significant effect of BCG vaccination and history of TB in past was observed on both tests.

7.
Indian J Dermatol Venereol Leprol ; 2013 Jan-Feb; 79(1): 65-69
Artigo em Inglês | IMSEAR | ID: sea-147395

RESUMO

Background: The microbiologic diagnosis of cutaneous tuberculosis is difficult because most lesions harbor only a small number of mycobacteria that cannot usually be detected by staining for the organism or by culture. Nucleic acid amplification tests based on the polymerase chain reaction (PCR) are potentially useful in this situation. Aims: To evaluate the utility of mRNA PCR and DNA PCR in the diagnosis of cutaneous tuberculosis. Methods: Biopsies from 28 cases of cutaneous tuberculosis and 19 controls with other diseases were subjected to microbiologic tests including direct smears for mycobacteria, culture and both mRNA PCR and DNA PCR. The laboratory was blinded to the clinical diagnosis. Results: None of the patients or controls showed a positive reaction on mRNA PCR test. Seven of 28 cases and 5 out of 19 controls showed a positive result on DNA PCR test yielding a sensitivity of 25% and a specificity of 73.7%. Conclusion: The results of PCR tests in cutaneous tuberculosis should be interpreted in the light of clinical and histopathological findings.


Assuntos
Adolescente , Adulto , Idoso , Biópsia , Estudos de Casos e Controles , Criança , DNA Bacteriano/análise , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Mycobacterium tuberculosis/genética , Mycobacterium tuberculosis/isolamento & purificação , Reação em Cadeia da Polimerase/métodos , RNA Mensageiro/análise , Tuberculose Cutânea/diagnóstico , Adulto Jovem
8.
Artigo em Inglês | IMSEAR | ID: sea-140274

RESUMO

Background & objectives: Tuberculosis (TB) is a public health problem worldwide. Rapid and accurate diagnosis of tuberculosis is crucial to facilitate early treatment of infectious cases and to reduce its spread. The present study was aimed to evaluation of 16 kDa antigen as a serodiagnostic tool in pulmonary and extra-pulmonary tuberculosis patients in an effort to improve diagnostic algorithm for tuberculosis. Methods: In this study, 200 serum samples were collected from smear positive and culture confirmed pulmonary tuberculosis patients, 30 tubercular pleural effusions and 21 tubercular meningitis (TBM) patients. Serum samples from 36 healthy, age matched controls (hospital staff), along with 60 patients with non-tubercular respiratory diseases were also collected and evaluated. Humoral response (both IgG and IgA) was looked for 16 kDa antigen using indirect ELISA. Results: Sensitivity of detection in various categories of pulmonary TB patients ranged between 73.8 and 81.2 per cent. While in the extra-pulmonary TB samples the sensitivity was 42.8 per cent (TBM) and 63.3 per cent (tubercular pleural effusion). The test specificity in both the groups was high (94.7%). All of the non-disease controls were negative. Among non-tubercular disease controls, five patients gave a positive humoral response against 16 kDa. Interpretation & conclusions: Serodiagnostic tests for TB have always had drawbacks of suboptimal sensitivity and specificity. The antigen used in this study gave encouraging results in pulmonary TB only, while in extra-pulmonary TB (tubercular meningitis and tubercular pleural effusion), this has shown a limited role in terms of sensitivity. Further work is required to validate its role in serodiagnosis of TB especially extra-pulmonary TB.


Assuntos
Antígenos de Bactérias , Ensaio de Imunoadsorção Enzimática , Pacientes , Derrame Pleural/análise , Fosfotransferases (Aceptor do Grupo Álcool)/análise , Soro , Testes Sorológicos , Tuberculose/diagnóstico , Tuberculose Pulmonar/diagnóstico , Tuberculose Meníngea/diagnóstico
9.
Mem. Inst. Oswaldo Cruz ; 106(5): 524-535, Aug. 2011.
Artigo em Inglês | LILACS | ID: lil-597710

RESUMO

The aim of the present study was to compare polymerase chain reaction (PCR)-based methods - spoligotyping and mycobacterial interspersed repetitive units (MIRU) typing - with the gold-standard IS6110 restriction fragment length polymorphism (RFLP) analysis in 101 isolates of Mycobacterium tuberculosis to determine the genetic diversity of M. tuberculosis clinical isolates from Delhi, North India. Spoligotyping resulted in 49 patterns (14 clusters); the largest cluster was composed of Spoligotype International Types (SITs)26 [Central-Asian (CAS)1-Delhi lineage], followed by SIT11 [East-African-Indian (EAI) 3-Indian lineage]. A large number of isolates (75 percent) belonged to genotypic lineages, such as CAS, EAI and Manu, with a high specificity for the Indian subcontinent, emphasising the complex diversity of the phylogenetically coherent M. tuberculosis in North India. MIRU typing, using 11 discriminatory loci, was able to distinguish between all but two strains based on individual patterns. IS6110-RFLP analysis (n = 80 strains) resulted in 67 unique isolates and four clusters containing 13 strains. MIRUs discriminated all 13 strains, whereas spoligotyping discriminated 11 strains. Our results validate the use of PCR-based molecular typing of M. tuberculosis using repetitive elements in Indian isolates and demonstrate the usefulness of MIRUs for discriminating low-IS6110-copy isolates, which accounted for more than one-fifth of the strains in the present study.


Assuntos
Adulto , Feminino , Humanos , Masculino , Adulto Jovem , DNA Bacteriano , Variação Genética , Repetições Minissatélites , Mycobacterium tuberculosis , Técnicas de Tipagem Bacteriana , Análise por Conglomerados , Genótipo , Índia , Reação em Cadeia da Polimerase , Polimorfismo de Fragmento de Restrição , Sequências Repetitivas de Ácido Nucleico
10.
Artigo em Inglês | IMSEAR | ID: sea-135390

RESUMO

Background & objectives: Multidrug-resistant tuberculosis (MDR-TB) has emerged as a significant global health concern. The most important risk factor for the development of MDR-TB is previous anti-tuberculosis therapy. Category II pulmonary TB includes those patients who had failed previous TB treatment, relapsed after treatment, or defaulted during previous treatment. We carried out this study to ascertain the prevalence of MDR-TB among category II pulmonary TB patients. Methods: This was a cross-sectional, descriptive study involving category II pulmonary TB patients diagnosed between 2005 and 2008. All sputum-positive category II TB cases were subjected to mycobacterial culture and drug-susceptibility testing (DST). MDR-TB was defined as TB caused by bacilli showing resistance to at least isoniazid and rifampicin. Results: A total of 196 cases of sputum-positive category II pulmonary tuberculosis patients were included. Of these, 40 patients (20.4%) had MDR-TB. The mean age of MDR-TB patients was 33.25 ± 12.04 yr; 9 patients (22.5%) were female. Thirty six patients showed resistance to rifampicin and isoniazid; while 4 patients showed resistance to rifampicin, isoniazid and streptomycin. The prevalence of MDR-TB among category-II pulmonary tuberculosis patients was 20.4 per cent. Interpretation & conclusions : The prevalence of MDR-TB in category II TB patients was significant. However, nation-wide and State-wide representative data on prevalence of MDR-TB are lacking. We stress the importance of continuous monitoring of drug resistance trends, in order to assess the efficacy of current interventions and their impact on the TB epidemic.


Assuntos
Adolescente , Adulto , Estudos Transversais , Feminino , Humanos , Índia/epidemiologia , Masculino , Pessoa de Meia-Idade , Prevalência , Tuberculose Resistente a Múltiplos Medicamentos/epidemiologia , Tuberculose Pulmonar/epidemiologia , Adulto Jovem
11.
Artigo em Inglês | IMSEAR | ID: sea-135389

RESUMO

Background & objectives: The prevalence of multidrug-resistant tuberculosis (MDR-TB) is increasing throughout the world. Although previous treatment for TB is the most important risk factor for development of MDR-TB, treatment-naïve patients are also at risk due to either spontaneous mutations or transmission of drug-resistant strains. We sought to ascertain the prevalence of MDR-TB among new cases of sputum-positive pulmonary TB. Methods: This was a prospective, observational study involving newly diagnosed cases of sputum-positive pulmonary tuberculosis diagnosed between 2008 and 2009 carried out in New Delhi, India. All sputum-positive TB cases were subjected to mycobacterial culture and first-line drug-susceptibility testing (DST). MDR-TB was defined as TB caused by bacilli showing resistance to at least isoniazid and rifampicin. Results: A total of 218 cases of sputum-positive pulmonary tuberculosis were enrolled between 2008 and 2009. Of these, 41 cases had negative mycobacterial cultures and DST was carried out in 177 cases. The mean age of the patients was 27.8 ± 10.2 yr; 59 patients (27%) were female. All patients tested negative for HIV infection. Out of 177 cases, two cases of MDR-TB were detected. Thus, the prevalence of MDR-TB among newly diagnosed pulmonary tuberculosis patients was 1.1 per cent. Interpretation & conclusions: MDR-TB prevalence is low among new cases of sputum-positive pulmonary TB treated at primary care level in Delhi. Nation-wide and State-wide representative data on prevalence of MDR-TB are lacking. Efforts should be directed towards continued surveillance for MDR-TB among newly diagnosed TB cases.


Assuntos
Adolescente , Adulto , Feminino , Humanos , Índia/epidemiologia , Masculino , Prevalência , Estudos Prospectivos , Escarro/microbiologia , Tuberculose Resistente a Múltiplos Medicamentos/diagnóstico , Tuberculose Resistente a Múltiplos Medicamentos/epidemiologia , Tuberculose Resistente a Múltiplos Medicamentos/microbiologia , Tuberculose Pulmonar/diagnóstico , Tuberculose Pulmonar/epidemiologia , Tuberculose Pulmonar/microbiologia , Adulto Jovem
12.
Indian J Dermatol Venereol Leprol ; 2011 Jan-Feb; 77(1): 47-50
Artigo em Inglês | IMSEAR | ID: sea-140764

RESUMO

A 55-year-old male with carcinoma in situ of urinary bladder was treated with weekly intravesical injections of Bacillus Calmette Guerin (BCG) vaccine. Three days after the sixth injection, he developed low grade fever and multiple grouped punched out, 2-3 mm ulcers around meatus and corona glandis. In addition, multiple, firm, indurated, nontender papules and few deeper nodules were present on the proximal part of glans penis, along with bilateral enlarged, matted and nontender inguinal lymph nodes. There was no history suggestive of sexually transmitted diseases and high risk behavior. Chest X-ray was within normal limits, and Mantoux, Venereal Disease Research Laboratory (VDRL) and HIV antibody tests were negative. The biopsy from the penile ulcer revealed epithelioid cell granuloma with Langhans giant cells. Fine needle aspiration cytology from the lymph node also revealed epithelioid cell granuloma and acid fast bacilli on Ziehl Neelsen's stain. The tissue biopsy grew Mycobacterium tuberculosis. The BCG immunotherapy was stopped and patient was treated with four drug antitubercular therapy with isoniazid, rifampicin, ethambutol, and pyrazinamide in standard daily doses along with pyridoxine. The edema resolved and the ulcers started healing within 2 weeks, and at 6 weeks after starting antitubercular therapy almost complete healing occurred. To the best of our knowledge, we describe the first case of an Indian patient with BCG induced primary tuberculosis of penis after immunotherapy for carcinoma urinary bladder and review the previously described cases to increase awareness of this condition in dermatologists and venereologists.

14.
Artigo em Inglês | IMSEAR | ID: sea-110493

RESUMO

BACKGROUND: There is high prevalence of tuberculosis in patients with HIV infection; hence the role of non-tuberculous mycobacteria (NTM) in HIV patients has always been undermined. NTM may be responsible for clinical disease in a substantial number of immuno-compromised HIV sero-positive individuals even in a country endemic for Mycobacterium tuberculosis (M. tuberculosis). The study was designed to look for the contribution of NTM to morbidity in HIV seropositive patients. MATERIAL AND METHODS: In a prospective study of ninety-four HIV seropositive individuals presenting with pulmonary or extra-pulmonary symptoms suggestive of mycobacterial infection, appropriate samples were collected and processed. Detailed clinical history was utilized to differentiate colonization or contamination by NTM from true lung disease. RESULTS: Fourteen samples grew mycobacterial species, 8(57.2%) being NTM. The distribution of NTM was--3 M. avium complex, 2 M. fortuitum, 2 M. vaccae, 1 M. phlei. 6 isolates were M. tuberculosis. CONCLUSION: NTM may be responsible for a significant proportion of mycobacterial infections in HIV seropositive individuals. Despite the high endemicity of tuberculosis in developing countries like India, the presence of NTM should be ruled out; especially in immuno-compromised HIV seropositive individuals before instituting anti-tubercular therapy empirically. In addition, non-response of NTM to ATT may be wrongly attributed to multi-drug resistant tuberculosis.


Assuntos
Adolescente , Adulto , Feminino , Soropositividade para HIV/complicações , Humanos , Masculino , Testes de Sensibilidade Microbiana , Pessoa de Meia-Idade , Infecções por Mycobacterium/complicações , Complexo Mycobacterium avium/isolamento & purificação , Mycobacterium fortuitum/isolamento & purificação , Mycobacterium phlei/isolamento & purificação , Estudos Prospectivos
15.
Indian J Pediatr ; 2002 Nov; 69 Suppl 1(): S20-4
Artigo em Inglês | IMSEAR | ID: sea-78501

RESUMO

Rapid and accurate diagnosis of tuberculosis is the cornerstone of global tuberculosis control programmes. With increasing incidence of tuberculosis epidemics, the low sensitivity and the length of time taken by traditional diagnostic modalities have hampered the efforts to interrupt disease transmission. Introduction of Polymerase Chain Reaction has enhanced the diagnostic predictability of the disease especially in the extrapulmonary, paucibacillary samples. High specificity and sensitivity have been reported in different samples. The technique is capable of picking as few as ten to fifty tubercle bacilli. When PCR technique is performed under quality controlled conditions, false negatives (due to underfined polymerase inhibitors) and false positives (due to cross contamination during sample collection or in the laboratory) can easily by avoided. Samples from sites with a possible latent infection focus or DNA from dead bacilli may give a positive reaction. The use of PCR with traditional diagnostic tools along with clinical presentation can prove helpful in patients presenting with a diagnostic dilemma.


Assuntos
Humanos , Índia/epidemiologia , Biologia Molecular/métodos , Infecções por Mycobacterium/complicações , Mycobacterium tuberculosis/isolamento & purificação , Reação em Cadeia da Polimerase/métodos , RNA Ribossômico/genética , Tuberculose/diagnóstico
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