Diagnosis Of Pulmonary Tuberculosis Research Articles

Combining interferon-γ release assays and metagenomic next-generation sequencing for diagnosis of pulmonary tuberculosis: a retrospective study

Combining interferon-γ release assays and metagenomic next-generation sequencing for diagnosis of pulmonary tuberculosis: a retrospective study

A qualitative study to inform the development of a decision support tool for the diagnosis of pulmonary tuberculosis in Tigray, Ethiopia.

Tuberculosis (TB) is Ethiopia's leading infectious killer disease. The war in the Tigray region of Ethiopia has resulted in the disruption of TB care services. Prediction models are recommended to aid the diagnosis of TB in resource-limited settings. However, the development of such decision-support tools without the participation of end users may not be successful. To inform the tool development, we described barriers to diagnosing TB and identified applicable and desirable parameters for the proposed tool. We conducted a qualitative study between February and June 2023 in two cities in Tigray, Northern Ethiopia. We conducted 12 in-depth interviews and four focus group discussions with healthcare workers (HCWs). Interviews were translated, coded, and analyzed to identify predefined and emergent themes during the thematic analysis. Healthcare workers used symptoms, risk factors, signs, and investigations to diagnose TB. However, failure to ask about antibiotic use, the absence and non-affordability of investigations, and patient load were barriers affecting the diagnosis of TB. Most of the classic TB symptoms and their duration were sorted as very important, simple, reliable, generalizable, and desirable indices. In addition, a trial of antibiotics, being chronically sick-looking, having HIV, having a contact history with a TB patient, and an erythrocyte sedimentation rate fulfilled the above criteria. In the TB diagnostic process, HCWs account for a variety of data, but they prefer the classic symptoms of TB to heighten their clinical suspicion. Antibiotic trials and some risk factors were also considered reasonable. However, when HCWs have a heavy workload and a shortage of investigations, they experience a suboptimal TB diagnostic process. Hence, appropriate context consideration and care providers' preferences for parameters will inform tool development.

A CT-based radiomics analyses for differentiating drug‑resistant and drug-sensitive pulmonary tuberculosis.

To explore the value of computed tomography based radiomics in the differential diagnosis of drug-sensitive and drug-resistant pulmonary tuberculosis. The clinical and computed tomography image data of 177 patients who were diagnosed with pulmonary tuberculosis through sputum culture and completed drug-susceptibility testing from April 2018 to December 2020 at the Second Hospital of Nanjing were retrospectively analyzed. Patients with drug-resistant pulmonary tuberculosis (n = 78) and drug-sensitive pulmonary tuberculosis (n = 99) were randomly divided into a training set (n = 124) and a validation set (n = 53) at a ratio of 7:3. Regions of interest were drawn to delineate the lesions and radiomics features were extracted from non-contrast computed tomography images. A radiomics signature based on the valuable radiomics features was constructed and a radiomics score was calculated. Demographic data, clinical symptoms, laboratory results and computed tomography imaging characteristics were evaluated to establish a clinical model. Combined with the Rad-score and clinical factors, a radiomics-clinical model nomogram was constructed. Thirteen features were used to construct the radiomics signature. The radiomics signature showed good discrimination in the training set (area under the curve (AUC), 0.891; 95% confidence interval (CI), 0.832-0.951) and the validation set (AUC, 0.803; 95% CI, 0.674-0.932). In the clinical model, the AUC of the training set was 0.780(95% CI, 0.700-0.859), while the AUC of the validation set was 0.692 (95% CI, 0.546-0.839). The radiomics-clinical model showed good calibration and discrimination in the training set (AUC, 0.932;95% CI, 0.888-0.977) and the validation set (AUC, 0.841; 95% CI, 0.719-0.962). Simple radiomics signature is of great value in differentiating drug-sensitive and drug-resistant pulmonary tuberculosis patients. The radiomics-clinical model nomogram showed good predictive, which may help clinicians formulate precise treatments.

Progress and challenges in clinical diagnosis and treatment of co-existent lung cancer and pulmonary tuberculosis

Lung cancer is the leading cause of malignancy-related morbidity and mortality in China and worldwide, posing a significant threat to human well-being. Tuberculosis (TB) is the second leading cause of death from a single infectious source, after COVID-19 infection, and represents a public health crisis. Recent research has shown that TB is an independent risk factor for lung cancer, while patients with lung cancer may also be at increased risk of TB. The occurrence of TB poses to a challenge to the implementation of the anti-cancer therapy in lung cancer. Early identification and appropriate treatment are essential for the prognosis improvement. Therefore, in this review, we aimed to highlight the research advances and challenges in the diagnosis and treatment of lung cancer and TB co-existence, with the further aim of providing new insights into the clinical management of patients and future research.

Case of delayed diagnosis of combined urogenita and pulmonary tuberculosis in a patient with abnormal uterine bleeding

According to the World Health Organization tuberculosis remains a global health issue for both adult and pediatric populations worldwide. Among women the peak incidence occurs during the active reproductive age, with pregnant women being 1.5–2 times more likely to be affected and experience more severe symptoms than non-pregnant women. In the Altai Region, the epidemiological situation of tuberculosis is characterized by instability, with the incidence rate among women reaching30.5 per 100 000 of the corresponding population in 2022. Delayed diagnosis and treatment can lead to serious complications, including fatal outcomes for both mother and fetus. This article describes a clinical observation of a case of urogenital and pulmonary tuberculosis diagnosed three months after premature abdominal delivery. The course of pregnancy was complicated by acute pleuritis at 13–14 weeks, however, negative results of bacteriological culture of pleural fluid led to the absence of specific tuberculosis treatment and the development of chronic subcompensated placental dysfunction. Three months after delivery, a 34-year-old patient was admitted to the gynecological department of the emergency hospital with abnormal uterine bleeding. The diagnosis was confirmed by histopathology of an endometrial sample revealing tuberculous granulomas without caseous necrosis with epithelioid giant cells of Pirogov – Langhans. Subsequently, generalized tuberculosis was diagnosed in the preterm infant. The negative impact of undiagnosed combined urogenital and pulmonary tuberculosis on the course and outcome of pregnancy is demonstrated, including the development of anemia, placental dysfunction, preterm delivery, puerperal complications, and adverse perinatal outcomes.

Application of γδ T cells with different memory phenotypes in clinical diagnosis of active pulmonary tuberculosis

ObjectiveTo investigate the application and clinical significance of different memory phenotypes of γδ T-cell subsets in the clinical diagnosis of pulmonary tuberculosis. MethodsIn total, 42 patients with tuberculosis (TB) according to the diagnostic criteria for tuberculosis (WS288-2017) who were treated at the Infectious Diseases Hospital affiliated with Soochow University from February 2023 to July 2023 were enrolled. Additionally, 16 patients with latent TB infection (LTBI) and 20 healthy controls (HCs) were included. Flow cytometry was used to measure the expression levels of γδ T cells, Vδ1 T-cell subsets/Vδ2 T-cell subsets, naive (CD45RA+CD27+) cells, central memory (CD45RA-CD27+) cells, effector memory (CD45RA-CD27-) cells, and terminally differentiated (CD45RA+CD27-) cells in the peripheral blood. The expression levels at different stages of TB infection were compared. ResultsThere were no significant differences in peripheral blood γδ T cells or Vδ1 T cells among the HC, LTBI and TB groups. The proportion of CD45RA-CD27+Vδ2 T cells in TB patients was significantly lower than that in HCs and LTBI patients, but the proportion of CD45RA+CD27-Vδ2 T cells was greater. ROC curve analysis revealed that CD45RA-CD27+Vδ2 T cells (AUC), CD45RA+CD27-Vδ2 T cells (AUC), and the combination of both (AUC) were effective in differentiating TB patients from LTBI patients. ConclusionThe proportions of CD45RA-CD27+Vδ2 T cells and CD45RA+CD27-Vδ2 T cells are potential biomarkers for the diagnosis of active TB infection and are helpful for distinguishing active TB infection from LTBI.

Risk factors associated with post-tuberculosis sequelae: a systematic review and meta-analysis

Post-tuberculosis (TB) sequelae present a significant challenge in the management of TB survivors, often leading to persistent health issues even after successful treatment. Identifying risk factors associated with post-TB sequelae is important for improving outcomes and quality of life of TB survivors. This systematic review and meta-analysis aims to identify risk factors associated with long-term physical sequelae among TB survivors. We systematically searched Medline, Embase, PROQUEST, and Scopus for studies on long-term physical sequelae among TB survivors up to December 12, 2023. The primary outcome of interest was to quantify risk factors of long-term physical sequelae (i.e., respiratory, hepatic, hearing, neurological, visual, renal, and musculoskeletal sequelae). We included all forms of TB patients who experienced long-term physical sequelae. We used narrative synthesis for risk factors reported once and random-effect meta-analysis for primary outcomes with two or more studies. Findings were presented with odds ratios (OR) and 95% confidence intervals (CI). Publication bias was assessed using funnel plots and Egger regression, and heterogeneity was examined with a Galbraith radial plot. The protocol was registered on Prospero (CRD42021250909). A total of 73 articles from 28 countries representing 31,553TB-treated patients were included in the narrative synthesis, with 64 of these studies included in the meta-analysis. Risk factors associated with post-TB lung sequelae include older age (OR=1.62, 95% CI: 1.07-2.47), previous TB treatment history (OR=3.43, 95% CI: 2.37-4.97), smoking (OR=1.41, 95% CI: 1.09-1.83), alcohol consumption (OR=1.84, 95% CI: 1.04-3.25), smear-positive pulmonary TB diagnosis (OR=3.11, 95% CI: 1.77-6.44), and the presence of radiographic evidence of pulmonary lesions at the commencement of treatment (OR=2.04, 95% CI: 1.07-3.87). Risk factors associated with post-TB liver injury included pre-existing hepatitis (OR=2.41, 95% CI: 1.16-6.08), previous TB treatment (OR=2.64, 95% CI: 1.22-6.67), hypo-albuminemia (OR=2.10, 95% CI: 1.53-2.88), HIV co-infection (OR=2.72, 95% CI: 1.66-4.46), and CD4 count <200mm3 in HIV-infected individuals (OR=2.03, 95%CI: 1.26-3.27). Risk factors associated with post-TB hearing loss include baseline hearing problems (OR=1.72, 95% CI: 1.30-2.26), and HIV co-infection (OR=3.02, 95% CI: 1.96-4.64). This systematic review and meta-analysis found that long-term physical post-TB sequelae including respiratory, hepatic, and hearing impairment were associated with a range of socio-demographic, behavioral, and clinical factors. Identification of these risk factors will help to identify patients who will benefit from interventions to reduce the burden of suffering from post-TB treatment. Healy Medical Research Raine Foundation, the Australian National Health and Medical Research Council, and Curtin University Higher Degree Research Scholarship fund the study.

015. A Gastrointestinal Infantile Hemangioma: A Rare Case Report and Literature Review

Background: Small intestinal hemangioma in children is a rare case. The most common predilection is jejunum area. History taking, physical examination, and supporting examinations are needed to help establish the diagnosis. Case: 1 year old girl came with complaints of vomiting with blood since the age of 6 months with frequency 10x/day everytime she eats and drinks. The patient has been given treatment according to the diagnosis of pulmonary tuberculosis and digestive problem, then referred to dr. Kariadi hospital because there was no improvement. Based on examinations, the patient was diagnosed with obstructive ileus at the level of jejunum and exploratory laparotomy was performed. Multiple hemangiomas of 14 x 5 cm were found in the jejunum and confirmed by anatomic pathological examination. Six days after the operation, the child was allowed to go home. Conclusion: Although this case is a rare case in children and include benign tumors, it is necessary to perform a quick diagnosis and appropriate management to prevent mortality and morbidity in children due to gastrointestinal bleeding.

Factors Affecting the Early Diagnosis of Smear-positive Pulmonary Tuberculosis in Patients in Qom Province, Iran

Background and Objectives: According to the report of the World Health Organization (WHO), almost one-third of the world’s population is infected with tuberculosis (TB). The delay in TB diagnosis, in addition to increasing mortality, can increase the duration of disease transmission. This study aims to identify the factors affecting the early detection of smear-positive pulmonary TB in Patients in Qom Province, Iran. Methods: In this case-control study, 120 patients with smear-positive pulmonary TB (60 with a diagnosis delayed for more than three months and 60 with a timely diagnosis) diagnosed from 2018 to 2021 in Qom Province participated. To determine the factors effective in early diagnosis of pulmonary TB, the odds ratio of each factor was calculated, and logistic regression analysis was used for data analysis. Results: The prescription of the sputum test at the first visit had the most significant effect on the early diagnosis of pulmonary TB (odds ratio=161, P&lt;0.001). The TB in patients who visited the clinics and those visited by general practitioners was diagnosed with a higher delay. The lack of knowledge of existing TB diagnosis and treatment services in health centers had increased the diagnosis delay by 2.3. Occupation, gender, and place of residence were not found to be effective factors. Conclusion: It seems that most doctors in Iran neglect to prescribe a sputum test for patients suspected of pulmonary TB and only prescribe chest x-rays. Training and informing doctors, private medical centers, and pharmacies in referring patients suspected of pulmonary TB to the health centers where the patients live can cause timely diagnosis of pulmonary TB.

Does the Third Sputum Exam has an Added Value in the Diagnosis of Pulmonary Tuberculosis?

Abstract Introduction/Objective Introduction: Current practice of examining three sputum for the diagnosis of pulmonary tuberculosis (PTB) has tended to overburden the already scarce human resources in all-purpose laboratories, and to increase the turn- around- time for patients seeking treatment. Therefore, assessing the added value of the third sputum in the diagnosis of PTB in resource-limited country with less functional External Quality Assurance (EQA) system is critical. Methods/Case Report Materials and methods: Data on patients diagnosed with smear-positive PTB during 2012- 2016 was collected retrospectively from laboratory register of nine hospitals in Eritrea. The data was extracted and analyzed for incremental yield of three sputum samples. Results (if a Case Study enter NA) Results: Data from 2,484 microscopically confirmed acid-fast bacilli (AFB) smear positive PTB patients were reviewed. AFB was detected in the first sputum in 87.5% of patients, and 99.1% for the combined first and second sputum specimens. The incremental yield of the third sputum specimen as a diagnostic value was only 0.9%. No significant variation was detected by region, residence, gender or HIV. Background information Number of cases Percent Region Maekel 649 26.10% Anseba 293 11.80% Gash-Barka 815 32.80% Debub 297 12.00% Northern Red Sea 337 13.60% Southern Red Sea 93 3.70% Sex Male 1,251 50.40% Female 1,233 49.60% Residence Urban 1,296 52.20% Rural 1,188 47.80% Age group &amp;lt;15 35 1.40% 15 + 2,449 98.60% Total 2,484 100 Conclusion Conclusion: The added value of the third sputum is so minimal that its omission will reduce patient visits, workload and cost for patients and health services. Therefore, even countries like Eritrea, with limited EQA, should consider limiting the number of sputum examinations to improve quality.

Stool Xpert® MTB/RIF Ultra for TB diagnosis in children: experience from a national scale-up programme.

We describe the programmatic scale-up of stool testing using Xpert® MTB/RIF Ultra (Ultra), as recommended by the WHO to improve childhood pulmonary TB (PTB) diagnosis. USAID's Alliance for Combating TB in Bangladesh Activity, in collaboration with the National TB Control Programme, is implementing a stool-based diagnostic approach at 51 healthcare facilities in Bangladesh to improve PTB detection. Specimens from children (<15 years) with presumptive TB were tested using 'stool Ultra' with routine TB diagnostics. Physicians confirmed TB diagnosis and provided treatment as per national guidelines. Between March 2022 and December 2023, 16,429 specimens were tested, 871 (5.3%) were positive, and 642 (73.7%) showed 'trace detected' results. Positivity was significantly higher among females, and children presented with 'only cough ≥2 weeks', 'cough ≥2 weeks + weight loss', or 'fever ≥2 weeks, weight loss, fatigue + contact history'. Positivity was higher among '10-14 years old' children; however, 'trace detected' was highest among '5-9 years', followed by children aged '>2-<5 years' and '0-2 years'. Testing stools using Ultra provides a more effective way of diagnosing bacteriologically positive PTB in children. However, positivity varies with presenting symptoms/criteria, highlighting the need for careful diagnostic evaluation to ensure optimum use of limited diagnostic resources.

Enhancing the Accuracy of Peripheral Pulmonary Tuberculosis Diagnosis: A Comparative Evaluation of CapitalBioTM Mycobacterium Nucleic Acid Detection Test and Mycobacterium tuberculosis Isothermal RNA Amplification Assay Using Endobronchial Ultrasonography with Guide Sheath.

The diagnosis of tuberculosis located in the peripheral zone remains challenging and requires ultrasound bronchoscopy-guided maneuvers. We assessed the precision of CapitalBioTM Mycobacterium nucleic acid detection test (CapitalBio MTB test) and Mycobacterium tuberculosis isothermal RNA amplification test (MTB-RNA) using endobronchial ultrasonography with a guide sheath (EBUS-GS) for peripheral pulmonary tuberculosis (PTB) and compared it with those of acid-fast bacilli (AFB) smear and MTB culture tests. This retrospective analysis included 287 patients suspected of peripheral pulmonary tuberculosis who underwent EBUS-GS examinations, medical examination results of AFB smears, MTB culture, CapitalBio MTB test, and MTB-RNA were analyzed. We evaluated the sensitivity, specificity, positive predictive value (PPV), negative predictive value (NPV), and area under the receiver operating characteristic curve (AUC), and its diagnostic accuracy for peripheral PTB was evaluated in comparison with the final clinical diagnosis. The overall sensitivity, specificity, PPV, NPV, and AUC of CapitalBio MTB test were 44.83%, 100.00%, 100.00%, 54.07%, and 0.72, respectively; those of MTB-RNA were 22.99%, 100.00%, 100.00%, 45.75%, and 0.61, respectively, and those for parallel test (CapitalBio MTB test or MTB-RNA) were 46.55%, 100.00%, 100.00%, 54.85%, and 0.73, respectively. These values for AFB smear were 9.2%, 97.35%, 84.21%, 41.04%, and 0.53, respectively, and those of MTB culture were 31.03%, 100.00%, 100.00%, 48.50%, and 0.69, respectively. The CapitalBio MTB test showed the best diagnostic performance compared with AFB smear, MTB culture, and MTB-RNA assays and was similar to the parallel test (CapitalBio MTB test or MTB-RNA). The CapitalBio MTB test combined with EBUS-GS had satisfactory diagnostic accuracy for diagnosing peripheral PTB.

ANALYSIS OF RISK FACTORS FOR DELAYED DIAGNOSIS IN PULMONARY TUBERCULOSIS CASES IN BENGKULU CITY

This study aims to analyse the factors associated with delayed diagnosis of Pulmonary Tuberculosis and the frequency distribution of TB patients. The research method was analytic-observational with cross sectional approach. The research sample was patients in Bengkulu City total of 64 respondents. The results of the analysis showed that the majority of TB patients were male, age group 16-25 years, people who had jobs, and secondary education, had initial symptoms of cough, lived in the central area of the city, the distance from home to the nearest health facility was 1 &lt; 2 km, had a good level of knowledge, the majority had low stigma towards TB disease. There was no significant association between delay in diagnosis and gender, age, education, income, occupation, distance from home to health centre, location of residence, initial symptoms, first action of health centre, first health service visited. There was a significant association between the time between initial symptoms and seeking treatment and the incidence of delayed diagnosis. However, there was no significant association between delayed diagnosis, patient stigma about TB disease and knowledge.

Epidemiological characteristics, diagnosis and treatment effect of rifampicin-resistant pulmonary tuberculosis (RR-PTB) in Guizhou Province

BackgroundRifampicin-resistant pulmonary tuberculosis (RR-PTB) presents a significant threat to global public health security. China bears a substantial burden of RR-PTB cases globally, with Guizhou Province experiencing particularly alarming trends, marked by a continual increase in patient numbers. Understanding the population characteristics and treatment modalities for RR-PTB is crucial for mitigating morbidity and mortality associated with this disease.MethodsWe gathered epidemiological, diagnostic, and treatment data of all RR-PTB cases recorded in Guizhou Province from January 1, 2017 to December 31, 2023. Utilizing composition ratios as the analytical metric, we employed Chi-square tests to examine the spatiotemporal distribution patterns of RR-PTB patients and the evolving trends among different patient classifications over the study period.ResultsIn our study, 3396 cases of RR-PTB were analyzed, with an average age of 45 years. The number of RR-PTB patients rose significantly from 176 in 2017 to 960 in 2023, peaking notably among individuals aged 23–28 and 44–54, with a rising proportion in the 51–80 age group (P < 0.001). Since 2021, there has been a notable increase in the proportion of female patients. While individuals of Han ethnic group comprised the largest group, their proportion decreased over time (P < 0.001). Conversely, the Miao ethnicity showed an increasing trend (P < 0.05). The majority of patients were farmers, with their proportion showing an upward trajectory (P < 0.001), while students represented 4.33% of the cases. Geographically, most patients were registered in Guiyang and Zunyi, with a declining trend (P < 0.001), yet household addresses primarily clustered in Bijie, Tongren, and Zunyi. The proportion of floating population patients gradually decreased, alongside an increase in newly treated patients and those without prior anti-tuberculosis therapy. Additionally, there was a notable rise in molecular biological diagnostic drug sensitivity (real-time PCR and melting curve analysis) (P < 0.001). However, the cure rate declined, coupled with an increasing proportion of RR-PTB patients lost to follow-up and untreated (P < 0.05).ConclusionsEnhanced surveillance is crucial for detecting tuberculosis patients aged 23–28 and 44–54 years. The distribution of cases varies among nationalities and occupations, potentially influenced by cultural and environmental factors. Regional patterns in RR-PTB incidence suggest tailored prevention and control strategies are necessary. Despite molecular tests advances, challenges persist with low cure rates and high loss to follow-up. Strengthening long-term management, resource allocation, and social support systems for RR-PTB patients is essential.

New advances in diagnosis in pulmonary tuberculosis.

New advances in diagnosis in pulmonary tuberculosis.

Exhaled breath analysis: A promising triage test for tuberculosis in young children

The diagnosis of paediatric pulmonary tuberculosis is difficult, especially in young infants who cannot expectorate sputum spontaneously. Breath testing has shown promise in diagnosing respiratory tract infections, but data on paediatric tuberculosis are limited.We performed a prospective cross-sectional study in Kenya in children younger than five years with symptoms of tuberculosis. We analysed exhaled breath with a hand-held battery-powered nose device. For data analysis, machine learning was applied using samples classified as positive (microbiologically confirmed) or negative (unlikely tuberculosis) to assess diagnostic accuracy.Breath analysis was performed in 118 children. The area under the curve of the optimal model was 0.73. At a sensitivity of 86 % (CI 62–96 %), this resulted in a specificity of 42 % (95 % CI 30–55 %).Exhaled breath analysis shows promise as a triage test for TB in young children, although the WHO target product characteristics were not met.

Diagnostic accuracy of Truenat MTB Plus, Truenat MTB Ultima and Xpert MTB/RIF Ultra for the diagnosis of pulmonary TB in an HIV-endemic setting.

Truenat MTB Plus (MTB Plus) and MTB Ultima (Ultima) are World Health Organization-endorsed low-complexity tuberculosis (TB) tests, however, performance data are scarce. Adults (≥18 years; n=498) self-presenting with symptoms to primary care clinics in Cape Town, South Africa (19/02/2016-22/02/2023) provided sputa. We evaluated the accuracy of MTB Plus and Ultima, with Xpert MTB/RIF Ultra (Ultra) as a comparator, vs. a single culture (TB reference standard) or MTBDRplus on an isolate (rifampicin susceptibility reference standard). The proportion of MTB Plus and Ultima unsuccessful results was 20% (95% confidence interval 17, 23) and 14 (11, 16), respectively, with ≥half resolving upon retesting the same eluate. In a three-way analysis, MTB Plus, Ultima and Ultra had sensitivities of 84% (78, 88), 90% (85, 93), and 92% (87, 95), and specificities of 95% (92, 97), 85% (80, 88) and 95% (92, 97) for TB. The proportion of unsuccessful results for MTB-RIF Dx done the same day as DNA extraction was 9% (3, 16; MTB Plus-positives) and 18% (10, 26; Ultima-positives) [if after day-of-extraction, these were 27% (18, 35) and 44% (35, 51)]. Same-day rifampicin susceptibility testing was often unsuccessful in samples with "very low" load [73% (58, 89) MTB Plus, 75% (65, 86) Ultima] but had 100% (40, 100) sensitivity and 99% (96, 100) specificity (for both MTB Plus- or Ultima-positive DNA). Lot variation in unsuccessful and false-positive results was observed. Ultima showed comparable sensitivity to Ultra but specificity, lot variation, and, like MTB-RIF Dx, unsuccessful result rates were suboptimal. European & Developing Countries Clinical Trials Partnership, and South African Medical Research Council.

A decision tree-based study of pulmonary tuberculosis diagnosis-related groups.

Globally, pulmonary tuberculosis is a significant public health and social problem. We investigated the factors influencing the hospitalization cost of patients with pulmonary tuberculosis and grouped cases based on a decision tree model to provide a reference for enhancing the management of diagnosis-related groups (DRGs) of this disease. The data on the first page of the medical records of patients with the primary diagnosis of pulmonary tuberculosis were extracted from the designated tuberculosis hospital. The influencing factors of hospitalization cost were determined using the Wilcoxon rank sum test and multiple linear stepwise regression analysis, and the included cases were grouped using the chi-squared automated interaction test decision tree model, with these influential factors used as classification nodes. In addition, the included cases were grouped according to the ZJ-DRG grouping scheme piloted in Zhejiang Province, and the differences between the two grouping methods were compared. The length of hospital stay, respiratory failure, sex, and age were the determining factors of the hospitalization cost of patients with pulmonary tuberculosis, and these factors were incorporated into the decision tree model to form eight case combinations. The reduction in variance (RIV) using this grouping method was 60.60%, the heterogeneity between groups was high, the coefficients of variance ranged from 0.29 to 0.47, and the intra-group difference was small. The patients were also divided into four groups based on the ZJ-DRG grouping scheme piloted in Zhejiang Province. The RIV using this grouping method was 55.24, the differences between groups were acceptable, the coefficients of variance were 1.00, 0.61, 0.77, and 0.87, respectively, and the intra-group difference was significant. When the pulmonary tuberculosis cases were grouped according to the duration of hospital stay, respiratory failure, and age, the results were rather reasonable, providing a reference for DRG management and cost control of this disease.

Combination of exhaled breath condensate samples with lipoarabinomannan point of care assay for pulmonary tuberculosis (TB) diagnosis: protocol for a diagnostic accuracy study

IntroductionThe WHO estimates a gap of about 30% between the incident (10.6 million) and notified (7.5 million) cases of tuberculosis (TB). Combined with the growing recognition in prevalence surveys of...

Predictive Positive Value Xpert MTB/RIF in Detecting Mycobacterium tuberculosis on Adult Pulmonary Tuberculosis Patients in Dr. Soetomo Referral Hospital Surabaya Indonesia

Pulmonary tuberculosis is an infectious disease caused by Mycobacterium tuberculosis (Mtb) and transmitted via droplets. Southeast Asia is the largest contributor of TB, and Indonesia itself has the second-highest number in the world with an incidence of approximately 824000 cases. The most common symptoms of active TB are cough, fever, weight loss, and night sweats. The diagnosis can be established upon the confirmation that one of the specimens contains M. tuberculosis. Xpert MTB/RIF provides results in less than 2 hours, whereas culture takes approximately 2-6 weeks. This research aims to evaluate the characteristics and determine the Predictive Positive Value (PPV) percentage of GeneXpert MTB/RIF, utilizing parameters derived from the gold standard examination results, namely culture. This research method is descriptive- analytic based on secondary data extracted from medical records of patients receiving care at the multi-drug resistant TB (MDR-TB) Outpatient Management at Dr. Soetomo Referral Hospital Surabaya from the period January 2019 – April 2022. The results showed that the PPV level of GeneXpert MTB/RIF in detecting the presence of M. tuberculosis is 90%. The diagnosis of pulmonary TB is also supported by the chest X-ray infiltrate's appearance and clinical symptoms of cough, weight loss, fever, and night sweats. Smoking and diabetes are the most common comorbid and risk factors in TB. The conclusion of this study is that the PPV for diagnosing adult pulmonary TB using the Xpert MTB/RIF is relatively high. This suggests the potential use of this method as a diagnosing tool for accurately diagnosing pulmonary tuberculosis.