Publications by authors named "Viet N Nguyen"

Article Synopsis
  • In Viet Nam, a study utilizing the "Double X" strategy was implemented to diagnose tuberculosis (TB) by combining chest radiographs, computer-aided detection, and GeneXpert testing, revealing that many individuals with pulmonary TB might be asymptomatic.
  • The research analyzed the characteristics of symptomatic and asymptomatic participants, finding that over half of those with confirmed TB were subclinical, with particular demographic trends noted (e.g., older age groups, non-smokers).
  • Results suggested that computer-aided detection of specific radiographic abnormalities, such as fibrosis, could be effective in identifying subclinical TB cases, emphasizing its role in community TB screening efforts.
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Background: Computer-aided detection (CAD) algorithms for automated chest X-ray (CXR) reading have been endorsed by the World Health Organization for tuberculosis (TB) triage, but independent, multi-country assessment and comparison of current products are needed to guide implementation.

Methods: We conducted a head-to-head evaluation of five CAD algorithms for TB triage across seven countries. We included CXRs from adults who presented to outpatient facilities with at least two weeks of cough in India, Madagascar, the Philippines, South Africa, Tanzania, Uganda, and Vietnam.

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Countries that are high burden for TB must reverse the COVID-19 pandemic's devastating effects to accelerate progress toward ending TB. Vietnam's Double X (2X) strategy uses chest radiography (CXR) and GeneXpert (Xpert) rapid diagnostic testing to improve early detection of TB disease. Household contacts and vulnerable populations (e.

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Introduction: The Strengthen the Management of Multidrug-Resistant Tuberculosis in Vietnam (V-SMART) trial is a randomised controlled trial of using mobile health (mHealth) technologies to improve adherence to medications and management of adverse events (AEs) in people with multidrug-resistant tuberculosis (MDR-TB) undergoing treatment in Vietnam. This economic evaluation seeks to quantify the cost-effectiveness of this mHealth intervention from a healthcare provider and societal perspective.

Methods And Analysis: The V-SMART trial will recruit 902 patients treated for MDR-TB across seven participating provinces in Vietnam.

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In Vietnam, chest radiography (CXR) is used to refer people for GeneXpert (Xpert) testing to diagnose tuberculosis (TB), demonstrating high yield for TB but a wide range of CXR abnormality rates. In a multi-center implementation study, computer-aided detection (CAD) was integrated into facility-based TB case finding to standardize CXR interpretation. CAD integration was guided by a programmatic framework developed for routine implementation.

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Introduction: The health and economic burden of tuberculosis (TB) in urban Viet Nam is high. Social protection and support interventions can improve treatment outcomes and reduce costs. However, evidence regarding optimal strategies in this context is lacking.

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Chronic obstructive pulmonary disease (COPD) out-patient clinic is for stable patients but it requires patient's adherence to medicine and medical checkups. Our study aimed to assess COPD out-patient clinics management efficacy with respect to medication adherence and treatment costs at 3 out-patient clinics. Data were collected through 514 patient interviews and from medical records for statistical analysis.

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Stigma and isolation are common in people with tuberculosis (TB). Social isolation contributes to reduced health outcomes and TB treatment adherence. Stigma and the drivers of isolation in people with Drug-Resistant (DR)-TB may include modifiable advice and practices of family and Health Care Workers (HCW).

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In the present study, distribution characteristics of ten typical phthalic acid esters (PAEs) were investigated in 90 air samples collected from the urban areas in Hanoi, Vietnam from May to August 2022. The total concentrations of PAEs in indoor and ambient air samples were in the range of 320-4770 ng/m and 35.9-133 ng/m, respectively.

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Objectives: To end tuberculosis (TB), the vast reservoir of 1.7-2.3 billion TB infections (TBIs) must be addressed, but achieving global TB preventive therapy (TPT) targets seems unlikely.

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Introduction: Tuberculosis preventive treatment (TPT) is an essential component for TB elimination. In order to be successfully implemented on a large scale, TPT needs to be safe, affordable and widely available in all settings. Short TPT regimens, that are less burdensome than longer regimens, to patients and health systems, are needed.

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Background The role of uric acid is gaining increasing importance in the evaluation of cardiovascular disease, but its relationship with atrial fibrillation (AF) is unclear. This study aims to investigate the association between uric acid levels and risk of new-onset AF. Methods and Results A total of 339 604 individuals 30 to 60 years of age and free from cardiovascular disease at baseline (1985-1996) in the Swedish AMORIS (Apolipoprotein-Mortality Risk) cohort were followed until December 31, 2019 for incident AF.

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Objectives: World Health Organization recommends a 7-drug 9-11-month rifampicin-resistant tuberculosis (RR-TB) short treatment regimen (STR). To reduce the pill burden, we assessed the safety and effectiveness of a 5-drug 9-11-month modified STR (mSTR).

Methods: Prospective cohort study of an all-oral mSTR (comprising bedaquiline, levofloxacin, linezolid [LZD], clofazimine, and/or pyrazinamide) for patients with RR-TB without confirmed fluoroquinolone resistance, enrolled in Vietnam between 2020-2021.

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The World health organization (WHO) recently recommended standardized all-oral shorter regimens for rifampicin resistant Tuberculosis (RR-TB). For highly resistant Tuberculosis patients such as pre-XDR-TB: RR-TB plus additional resistance to fluoroquinolones (FQ), the 6-9-months bedaquiline (bedaquiline)-based regimens or BDQ-based long regimens are recommended. The role of second-line injectable (SLI) drugs in the treatment of drug resistant TB is restricted because of safety concerns.

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Hormone imbalance and female sexual dysfunction immensely affect perimenopausal female health and quality of life. Hormone therapy can improve female hormone deficiency, but long-term use increases the risk of cardiovascular diseases and cancer. Therefore, it is necessary to develop a novel effective treatment to achieve long-term improvement in female general and sexual health.

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Background: While the safety and efficacy of inhaled budesonide-formoterol, used as-needed for symptoms, has been established for patients with asthma, it has not been trialed in undifferentiated patients with chronic respiratory diseases. We aimed to assess the feasibility of a pragmatic intervention that entails a stepped algorithm using inhaled budesonide-formoterol (dry powder inhaler, 160μg/4.5μg per dose) for patients presenting with chronic respiratory diseases to three rural district hospitals in Hanoi, Vietnam.

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Introduction: Multidrug-resistant tuberculosis (MDR-TB) remains a major public health problem globally. Long, complex treatment regimens coupled with frequent adverse events have resulted in poor treatment adherence and patient outcomes. Smartphone-based mobile health (mHealth) technologies offer national TB programmes an appealing platform to improve patient care and management; however, clinical trial evidence to support their use is lacking.

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Article Synopsis
  • Mycobacterium tuberculosis (Mtb) causes around 1.5 million deaths annually, with a significant portion of infections remaining latent rather than developing into active tuberculosis (TB).
  • Research indicates that M1-polarized macrophages (M1-MΦs) can effectively inhibit Mtb in vitro, suggesting their key role in regulating TB immunity, while M2-polarized macrophages (M2-MΦs) allow Mtb proliferation.
  • The findings reveal that M1-MΦs show increased expression of specific regulatory genes that help degrade Mtb and enhance immune response, while M2-MΦs have reduced expression of these genes, highlighting the distinct contributions of different macrophage types to TB control and potential therapeutic
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Article Synopsis
  • The study explored a smoking cessation intervention in Vietnam, combining counselling phone calls, text messages, and doctor advice to help smokers quit.
  • Out of 431 referrals to the Quitline, 221 smokers enrolled, with 40.7% self-reporting abstinence after 12 months, although only 5.9% verified their quit status through testing.
  • The findings indicate that this integrated approach is feasible in rural health settings, suggesting potential for broader applications in similar low- and middle-income countries.
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We evaluated the effects of the coronavirus disease pandemic on diagnosis of and treatment for tuberculosis (TB) in Vietnam. We obtained quarterly notifications for TB and multidrug-resistant/rifampin-resistant (MDR/RR) TB from 2015-2020 and evaluated changes in monthly TB case notifications. We used an interrupted time series to assess the change in notifications and treatment outcomes.

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Article Synopsis
  • A study in Vietnam assessed treatment success rates for multidrug-resistant tuberculosis (MDR-TB) between 2014 and 2016, finding a 65.5% success rate among patients.
  • Factors such as being male, living with HIV, and having extensive antibiotic resistance were linked to lower treatment success odds, while early culture conversion significantly improved success rates.
  • Recommendations include addressing co-morbidities like HIV, facilitating quicker bacteriological improvement, and ensuring financial support for patients to enhance treatment outcomes.
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Objectives: Tuberculosis (TB) stigma contributes to diagnostic delay, disease concealment, and reduced wellbeing for affected individuals. Despite the availability of several TB stigma scales, most high-TB burden countries do not have a culturally validated version available. This study evaluated the Van Rie TB stigma scale (VTSS) among people with TB in Vietnam.

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Background: Attendance at healthcare facilities provides an opportunity for smoking cessation interventions. However, the smoking behaviours of patients seeking healthcare in Vietnam are not well-understood. We aimed to evaluate behaviours related to smoking among patients presenting to health facilities in Vietnam.

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Background: The aim of the study was to establish syndromic diagnoses in patients presenting with respiratory symptoms to healthcare facilities in Vietnam and to compare the diagnoses with facility-level clinical diagnoses and treatment decisions.

Methods: A representative sample of patients aged ≥5 years, presenting with dyspnoea, cough, wheezing, and/or chest tightness to healthcare facilities in four provinces of Vietnam were systematically evaluated. Eight common syndromes were defined using data obtained.

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Objectives: Stigma contributes to diagnostic delay, disease concealment, and reduced wellbeing for people with multidrug-resistant tuberculosis (MDR-TB) and their communities. Despite the negative effects of stigma, there are no scales to measure stigma in people with MDR-TB. This study aimed to develop and validate a scale to measure stigma in people affected by MDR-TB in Vietnam.

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