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1.
HIV Med ; 25(4): 504-508, 2024 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-38169077

RESUMO

OBJECTIVES: People living with HIV may find personalized access to accurate information on antiretroviral therapy (ART) challenging given the stigma and costs potentially associated with attending physical consultations. Artificial intelligence (AI) chatbots such as ChatGPT may help to lower barriers to accessing information addressing concerns around ART initiation. However, the safety and accuracy of the information provided remains to be studied. METHODS: We instructed ChatGPT to answer questions that people living with HIV frequently ask about ART, covering i) knowledge of and access to ART; ii) ART initiation, side effects, and adherence, and iii) general sexual health practices while receiving ART. We checked the accuracy of the advice against international HIV clinical practice guidelines. RESULTS: ChatGPT answered all questions accurately and comprehensively. It recognized potentially life-threatening scenarios such as abacavir hypersensitivity reaction and gave appropriate advice. However, in certain contexts, such as specific geographic locations or for pregnant individuals, the advice lacked specificity to an individual's unique circumstances and may be inadequate. Nevertheless, ChatGPT consistently re-directed the individual to seek help from a healthcare professional to obtain targeted advice. CONCLUSIONS: ChatGPT may act as a useful adjunct in the process of ART counselling for people living with HIV. Improving access to information on and knowledge about ART may improve access and adherence to ART and outcomes for people living with HIV overall.


Assuntos
Infecções por HIV , Gravidez , Feminino , Humanos , Infecções por HIV/tratamento farmacológico , Inteligência Artificial , Aconselhamento , Pessoal de Saúde
2.
mBio ; 14(4): e0129723, 2023 Aug 31.
Artigo em Inglês | MEDLINE | ID: mdl-37530523

RESUMO

Hypervirulent Klebsiella pneumoniae causes liver abscess and potentially devastating metastatic complications. The majority of Klebsiella-induced liver abscess are caused by the CG23-I sublineage of hypervirulent Klebsiella pneumoniae. This and some other lineages possess a >200-kb virulence plasmid. We discovered a novel protein IroP nestled in the virulence plasmid-encoded salmochelin operon that cross-regulates and suppresses the promoter activity of chromosomal type 3 fimbriae (T3F) gene transcription. IroP is itself repressed by iron through the ferric uptake regulator. Iron-rich conditions increase T3F and suppress capsule mucoviscosity, leading to biofilm formation and cell adhesion. Conversely, iron-poor conditions cause a transcriptional switch to hypermucoid capsule production and T3F repression. The likely acquisition of iroP on mobile genetic elements and successful adaptive integration into the genetic circuitry of a major lineage of hypervirulent K. pneumoniae reveal a powerful example of plasmid chromosomal cross talk that confers an evolutionary advantage. Our discovery also addresses the conundrum of how the hypermucoid capsule that impedes adhesion could be regulated to facilitate biofilm formation and colonization. The acquired ability of the bacteria to alternate between a state favoring dissemination and one that favors colonization in response to iron availability through transcriptional regulation offers novel insights into the evolutionary success of this pathogen. IMPORTANCE Hypervirulent Klebsiella pneumoniae contributes to the majority of monomicrobial-induced liver abscess infections that can lead to several other metastatic complications. The large virulence plasmid is highly stable in major lineages, suggesting that it provides survival benefits. We discovered a protein IroP encoded on the virulence plasmid that suppresses expression of the type 3 fimbriae. IroP itself is regulated by iron, and we showed that iron regulates hypermucoid capsule production while inversely regulating type 3 fimbriae expression through IroP. The acquisition and integration of this inverse transcriptional switch between fimbriae and capsule mucoviscosity shows an evolved sophisticated plasmid-chromosomal cross talk that changes the behavior of hypervirulent K. pneumoniae in response to a key nutrient that could contribute to the evolutionary success of this pathogen.

3.
Open Forum Infect Dis ; 10(7): ofad337, 2023 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-37496601

RESUMO

Background: The Combination Antibiotic Therapy for Methicillin-Resistant Staphylococcus aureus (CAMERA2) trial ceased recruitment in July 2018, noting that a higher proportion of patients in the intervention arm (combination therapy) developed acute kidney injury (AKI) compared to the standard therapy (monotherapy) arm. We analyzed the long-term outcomes of participants in CAMERA2 to understand the impact of combination antibiotic therapy and AKI. Methods: Trial sites obtained additional follow-up data. The primary outcome was all-cause mortality, censored at death or the date of last known follow-up. Secondary outcomes included kidney failure or a reduction in kidney function (a 40% reduction in estimated glomerular filtration rate to <60 mL/minute/1.73 m2). To determine independent predictors of mortality in this cohort, adjusted hazard ratios were calculated using a Cox proportional hazards regression model. Results: This post hoc analysis included extended follow-up data for 260 patients. Overall, 123 of 260 (47%) of participants died, with a median population survival estimate of 3.4 years (235 deaths per 1000 person-years). Fifty-five patients died within 90 days after CAMERA2 trial randomization; another 68 deaths occurred after day 90. Using univariable Cox proportional hazards regression, mortality was not associated with either the assigned treatment arm in CAMERA2 (hazard ratio [HR], 0.84 [95% confidence interval [CI], .59-1.19]; P = .33) or experiencing an AKI (HR at 1 year, 1.04 [95% CI, .64-1.68]; P = .88). Conclusions: In this cohort of patients hospitalized with methicillin-resistant S aureus bacteremia, we found no association between either treatment arm of the CAMERA2 trial or AKI (using CAMERA2 trial definition) and longer-term mortality.

4.
Sci Rep ; 13(1): 9774, 2023 06 16.
Artigo em Inglês | MEDLINE | ID: mdl-37328522

RESUMO

A cost-minimization analysis was conducted for Klebsiella pneumoniae liver abscess (KLA) patients enrolled in a randomized controlled trial which found oral ciprofloxacin to be non-inferior to intravenous (IV) ceftriaxone in terms of clinical outcomes. Healthcare service utilization and cost data were obtained from medical records and estimated from self-reported patient surveys in a non-inferiority trial of oral ciprofloxacin versus IV ceftriaxone administered to 152 hospitalized adults with KLA in Singapore between November 2013 and October 2017. Total costs were evaluated by category and payer, and compared between oral and IV antibiotic groups over the trial period of 12 weeks. Among the subset of 139 patients for whom cost data were collected, average total cost over 12 weeks was $16,378 (95% CI, $14,620-$18,136) for the oral ciprofloxacin group and $20,569 (95% CI, $18,296-$22,842) for the IV ceftriaxone group, largely driven by lower average outpatient costs, as the average number of outpatient visits was halved for the oral ciprofloxacin group. There were no other statistically significant differences, either in inpatient costs or in other informal healthcare costs. Oral ciprofloxacin is less costly than IV ceftriaxone in the treatment of Klebsiella liver abscess, largely driven by reduced outpatient service costs.Trial registration: ClinicalTrials.gov Identifier NCT01723150 (7/11/2012).


Assuntos
Antibacterianos , Abscesso Hepático , Adulto , Humanos , Antibacterianos/uso terapêutico , Ceftriaxona/uso terapêutico , Klebsiella pneumoniae , Ciprofloxacina/uso terapêutico , Abscesso Hepático/tratamento farmacológico , Custos e Análise de Custo , Administração Oral
5.
Singapore Med J ; 2023 May 19.
Artigo em Inglês | MEDLINE | ID: mdl-37338488

RESUMO

In recognition of the morbidity and mortality associated with human immunodeficiency virus (HIV), the Joint United Nations Programme on HIV/acquired immunodeficiency syndrome (AIDS) (UNAIDS) aims to end the epidemic by setting and striving to achieve the ambitious 95-95-95 targets. However, Singapore is still not performing well in the first UNAIDS target. The National HIV Programme (NHIVP) developed this set of recommendations based on an adaptation of major international guidelines from the World Health Organization and the US Centers for Disease Control and Prevention. The goals of this recommendation are: (1) to increase the uptake of HIV testing; (2) to allow earlier detection and identification of individuals with unrecognised HIV infection; (3) to facilitate linkage to clinical services; and (4) reduce further transmission of HIV infection in Singapore.

7.
BMC Infect Dis ; 23(1): 102, 2023 Feb 21.
Artigo em Inglês | MEDLINE | ID: mdl-36809977

RESUMO

BACKGROUND: To address the hospital bed demand for Delta and Omicron surges in Singapore, the National University Health System (NUHS) developed a COVID Virtual Ward to relieve bed pressures on its three acute hospitals-National University Hospital, Ng Teng Fong General Hospital, Alexandra Hospital. To serve a multilingual population, the COVID Virtual Ward featuring protocolized teleconsultation of high-risk patients, use of a vital signs chatbot, supplemented by home visits where necessary. This study aims to evaluate the safety, outcomes and utilisation of the Virtual Ward as a scalable response to COVID-19 surges. METHODS: This is a retrospective cohort study of all patients admitted to the COVID Virtual Ward between 23 September to 9 November 2021. Patients were defined as "early discharge" if they were referred from inpatient COVID-19 wards and "admission avoidance" if they were referred directly from primary care or emergency services. Patient demographics, utilisation measures and clinical outcomes were extracted from the electronic health record system. The primary outcomes were escalation to hospital and mortality. Use of the vital signs chatbot was evaluated by examining compliance levels, need for automated reminders and alerts triggered. Patient experience was evaluated using data extracted from a quality improvement feedback form. RESULTS: 238 patients were admitted to the COVID Virtual Ward from 23 September to 9 November, of whom 42% were male, 67.6% of Chinese ethnicity. 43.7% were over the age of 70, 20.5% were immunocompromised, and 36.6% were not fully vaccinated. 17.2% of patients were escalated to hospital and 2.1% of patients died. Patients who were escalated to hospital were more likely to be immunocompromised or to have a higher ISARIC 4C-Mortality Score. There were no missed deteriorations. All patients received teleconsults (median of 5 teleconsults per patient, IQR 3-7). 21.4% of patients received home visits. 77.7% of patients engaged with the vital signs chatbot, with a compliance rate of 84%. All patients would recommend the programme to others in their situation. CONCLUSIONS: Virtual Wards are a scalable, safe and patient-centered strategy to care for high risk COVID-19 patients at home. TRIAL REGISTRATION: NA.


Assuntos
COVID-19 , Serviço Hospitalar de Emergência , Humanos , Masculino , Idoso , Feminino , Estudos Retrospectivos , Singapura , Hospitais Universitários
8.
Qual Health Res ; 33(3): 154-164, 2023 02.
Artigo em Inglês | MEDLINE | ID: mdl-36527203

RESUMO

Healthcare organizations offer numerous clinical and academic leadership pathways for physicians, among which the position of program director (PD) is considered to be a prominent educational leadership role. As PDs are instrumental in the recruitment and training of the next generations of physicians, PD gender distribution can affect the present and future of a medical specialty. This study offers a dialectical perspective in understanding how international PDs negotiate gendered understanding of their work/role by using the framework of Relational Dialectics Theory 2.0. Thirty-three interviews of PDs from Qatar, Singapore, and the United Arab Emirates were conducted and, using contrapuntal analysis, the competing discourses of meanings of gender in the PD work/role were examined. Competing discourses where structural, cultural, and professional meanings of gender were interrogated revealed inherent multiple meanings of how gender is understood in PD work/roles. In making sense of these meanings of gender, PDs express dilemmas of traditional gender binaries of masculine/feminine work/role meanings to explain the term in different ways in their everyday organizational and cultural struggles. The findings have implications for PD recruitment and retention in teaching hospitals.


Assuntos
Internato e Residência , Médicos , Humanos , Educação de Pós-Graduação em Medicina , Liderança , Catar
9.
Trials ; 23(1): 572, 2022 Jul 19.
Artigo em Inglês | MEDLINE | ID: mdl-35854360

RESUMO

BACKGROUND: The incidence of Gram-negative bacteraemia is rising globally and remains a major cause of morbidity and mortality. The majority of patients with Gram-negative bacteraemia initially receive intravenous (IV) antibiotic therapy. However, it remains unclear whether patients can step down to oral antibiotics after appropriate clinical response has been observed without compromising outcomes. Compared with IV therapy, oral therapy eliminates the risk of catheter-associated adverse events, enhances patient quality of life and reduces healthcare costs. As current management of Gram-negative bacteraemia entails a duration of IV therapy with limited evidence to guide oral conversion, we aim to evaluate the clinical efficacy and economic impact of early stepdown to oral antibiotics. METHODS: This is an international, multicentre, randomised controlled, open-label, phase III, non-inferiority trial. To be eligible, adult participants must be clinically stable / non-critically ill inpatients with uncomplicated Gram-negative bacteraemia. Randomisation to the intervention or standard arms will be performed with 1:1 allocation ratio. Participants randomised to the intervention arm (within 72 h from index blood culture collection) will be immediately switched to an oral fluoroquinolone or trimethoprim-sulfamethoxazole. Participants randomised to the standard arm will continue to receive IV therapy for at least 24 h post-randomisation before clinical re-assessment and decision-making by the treating doctor. The recommended treatment duration is 7 days of active antibiotics (including empiric therapy), although treatment regimen may be longer than 7 days if clinically indicated. Primary outcome is 30-day all-cause mortality, and the key secondary outcome is health economic evaluation, including estimation of total healthcare cost as well as assessment of patient quality of life and number of quality-adjusted life years saved. Assuming a 30-day mortality of 8% in the standard and intervention arms, with 6% non-inferiority margin, the target sample size is 720 participants which provides 80% power with a one-sided 0.025 α-level after adjustment for 5% drop-out. DISCUSSION: A finding of non-inferiority in efficacy of oral fluoroquinolones or trimethoprim-sulfamethoxazole versus IV standard of care antibiotics may hypothetically translate to wider adoption of a more cost-effective treatment strategy with better quality of life outcomes. TRIAL REGISTRATION: ClinicalTrials.gov NCT05199324 . Registered 20 January 2022.


Assuntos
Bacteriemia , Qualidade de Vida , Administração Oral , Adulto , Antibacterianos/administração & dosagem , Antibacterianos/uso terapêutico , Bacteriemia/tratamento farmacológico , Ensaios Clínicos Fase III como Assunto , Estudos de Equivalência como Asunto , Humanos , Estudos Multicêntricos como Assunto , Ensaios Clínicos Controlados Aleatórios como Assunto , Combinação Trimetoprima e Sulfametoxazol/uso terapêutico
11.
Singapore Med J ; 2022 Apr 03.
Artigo em Inglês | MEDLINE | ID: mdl-35366662

RESUMO

Since the advent of combination antiretroviral therapy (ART), the mortality attributable to HIV infection has been reduced by 80%. Newer antiretroviral agents are highly efficacious, have minimal side effects as compared to older drugs, and can be formulated as combination tablets, which reduces patients' pill burden. Despite these advances, 680,000 people died of AIDS-related illnesses worldwide in 2020. The National ART and Monitoring Recommendations by the National HIV Programme are created to guide physicians on the prescribing of ART based on the patients' needs. These recommendations are based on international guidelines and tailored to the local context and unique domestic considerations. It is hoped that with the publication of these recommendations, the care of people living with HIV can be enhanced, bringing us closer to the ending of HIV in our lifetime.

12.
Am J Trop Med Hyg ; 106(3): 805-808, 2022 01 24.
Artigo em Inglês | MEDLINE | ID: mdl-35073511

RESUMO

Metastatic infection resulting from Klebsiella pneumoniae liver abscess (KPLA) results in high mortality and morbidity. This study aimed to determine the risk factors associated with metastatic infection among patients with KPLA in Singapore. A retrospective case-control analysis among adult patients admitted to the National University Hospital with KPLA between 2013 and 2017 was conducted. Univariate and multivariate regression analysis was conducted. Of the 116 KPLA patients, 38.8% had pulmonary metastatic infection. Length of hospital stay (P = 0.001) and intensive care unit admissions (P = 0.044) were significantly longer and greater, respectively, among the patients with metastatic infection. Sepsis-induced hypotension (adjusted odds ratio [AOR], 4.88; 95% CI, 1.1-21.69), breathlessness (AOR, 5.10; 95% CI, 1.42-18.27), and abscess size (AOR, 1.02; 95% CI, 1.01-1.03) were associated independently with septic metastatic infection. Patients with KPLA who had breathlessness and larger abscess size are at a greater risk of septic metastatic infection.


Assuntos
Infecções por Klebsiella , Abscesso Hepático , Adulto , Estudos de Casos e Controles , Dispneia , Humanos , Infecções por Klebsiella/complicações , Infecções por Klebsiella/epidemiologia , Klebsiella pneumoniae , Abscesso Hepático/epidemiologia , Estudos Retrospectivos , Fatores de Risco , Singapura/epidemiologia
13.
Teach Learn Med ; 34(5): 473-480, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-34839762

RESUMO

PHENOMENON: Program director (PD)-resident relationships are important in shaping resident experiences and educational outcomes. Yet, there is limited literature on the development or meaning of these relationships, particularly from the PD perspective. Through qualitative interviews, we explore how PDs navigate their role to develop and maintain relationships with their trainees, and elucidate how these relationships impact the PDs personally and professionally. APPROACH: Qualitative study using individual semi-structured interviews of former and current PDs (n = 33) from multiple specialties and hospitals in accredited residency programs in Qatar, Singapore, and the United Arab Emirates. We used attachment theory and narrative analysis to investigate how PDs perceive and describe relationship building with their residents amidst tensions of familiarizing themselves with their new role. FINDINGS: PD-resident relationships are complex and multidimensional, shifting over time, changing patterns and evolving to respond to different contexts. PDs initially negotiate their own roles, while navigating their relationships with residents and other stakeholders to create their professional identities. PDs develop professional alliances, defining for the resident the profession and its expectations. As residents negotiate the various challenges of their training, the role of the PD emerges into one of providing emotional support and advocacy. The support and attachment are often enduring and extend beyond the period of residency training. INSIGHTS: Our study examines the experiences of program directors as they negotiate complex educator-learner relationships. The PDs described roles that extended beyond their job description. Although all interviewees reported that the PD position was challenging, they focused on the rewarding aspects of the job and how their relationships helped sustain them through the difficulties. Through their reflections, the PDs described the personal satisfaction and benefits of their interactions with the residents, and how the engagement contributed to personal and professional success.


Assuntos
Internato e Residência , Medicina , Humanos , Educação de Pós-Graduação em Medicina/métodos , Satisfação Pessoal , Catar
15.
Int J Infect Dis ; 113: 178-183, 2021 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-34563709

RESUMO

OBJECTIVES: To examine the prevalence and characteristics of HIV-tuberculosis (TB) co-infected patients in Singapore, an intermediate TB-burden country. METHODS: Retrospective data across 11 years was obtained from the National University Hospital (NUH), a quaternary hospital and the National Centre for Infectious Diseases (NCID), the national HIV center. RESULTS: From December 2005 to December 2016, 4015 HIV-infected patients were managed at NUH and NCID, of whom, respectively, 48 and 272 were diagnosed with active TB disease. Only 2 patients (0.6%) were screened for latent TB infection on HIV diagnosis. Mean CD4 count at TB diagnosis was 125.0 ± 153.9 cells/mm3. More patients with HIV diagnosed ≥6 weeks before TB (41%) were associated with CD4 counts >200 cells/mm3 than patients with TB diagnosed ≥6 weeks before HIV (2%). Of 124 (38.6%) HIV-TB patients with CD4 count ≤50 cells/mm3, only 18 (14.2%) started anti-retroviral therapy (ART) in <2 weeks. Of patients with pulmonary TB, 33.5% had normal chest x-ray. CONCLUSIONS: Latent TB infection screening in HIV-infected patients is low, and ART initiation is delayed in HIV-TB patients with CD4 ≤50 cells/mm3. Pulmonary TB patients with HIV can be infectious despite normal chest x-ray. Clinical practices can be further improved to benefit HIV-TB patients.


Assuntos
Coinfecção , Infecções por HIV , Tuberculose Latente , Tuberculose , Coinfecção/epidemiologia , Infecções por HIV/complicações , Infecções por HIV/tratamento farmacológico , Infecções por HIV/epidemiologia , Hospitais Universitários , Humanos , Tuberculose Latente/complicações , Tuberculose Latente/diagnóstico , Tuberculose Latente/tratamento farmacológico , Estudos Retrospectivos
16.
Open Forum Infect Dis ; 8(8): ofab387, 2021 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-34395716

RESUMO

BACKGROUND: Carbapenems are recommended treatment for serious infections caused by AmpC-producing gram-negative bacteria but can select for carbapenem resistance. Piperacillin-tazobactam may be a suitable alternative. METHODS: We enrolled adult patients with bloodstream infection due to chromosomal AmpC producers in a multicenter randomized controlled trial. Patients were assigned 1:1 to receive piperacillin-tazobactam 4.5 g every 6 hours or meropenem 1 g every 8 hours. The primary efficacy outcome was a composite of death, clinical failure, microbiological failure, and microbiological relapse at 30 days. RESULTS: Seventy-two patients underwent randomization and were included in the primary analysis population. Eleven of 38 patients (29%) randomized to piperacillin-tazobactam met the primary outcome compared with 7 of 34 patients (21%) in the meropenem group (risk difference, 8% [95% confidence interval {CI}, -12% to 28%]). Effects were consistent in an analysis of the per-protocol population. Within the subcomponents of the primary outcome, 5 of 38 (13%) experienced microbiological failure in the piperacillin-tazobactam group compared to 0 of 34 patients (0%) in the meropenem group (risk difference, 13% [95% CI, 2% to 24%]). In contrast, 0% vs 9% of microbiological relapses were seen in the piperacillin-tazobactam and meropenem arms, respectively. Susceptibility to piperacillin-tazobactam and meropenem using broth microdilution was found in 96.5% and 100% of isolates, respectively. The most common AmpC ß-lactamase genes identified were bla CMY-2, bla DHA-17, bla CMH-3, and bla ACT-17. No ESBL, OXA, or other carbapenemase genes were identified. CONCLUSIONS: Among patients with bloodstream infection due to AmpC producers, piperacillin-tazobactam may lead to more microbiological failures, although fewer microbiological relapses were seen. CLINICAL TRIALS REGISTRATION: NCT02437045.

17.
J Grad Med Educ ; 13(4): 526-533, 2021 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-34434513

RESUMO

BACKGROUND: Residency program directors (PDs) need to navigate diverse roles and responsibilities as clinical teachers, administrators, and drivers of educational improvement. Little is known about the experience of PDs leading transformation of international residency programs. OBJECTIVE: We explored the lived experiences of international residency PDs and developed an understanding of how PDs manage educational program transformation. METHODS: Using a phenomenological approach, semi-structured interviews were conducted with current and former PDs involved in the transformation to competency-based medical education in the first international settings to be accredited by the Accreditation Council for Graduate Medical Education-International (ACGME-I). Thirty-three interviews with PDs from Qatar, Singapore, and the United Arab Emirates were conducted from September 2018 to July 2019, audio-recorded, and transcribed. Data were independently coded by 2 researchers. A thematic analysis was conducted and patterns that reflected coping and managing educational reform were identified. RESULTS: PDs described distinctive patterns of navigating the educational transformation. Five themes emerged: PDs (1) embraced continuous learning and self-development; (2) managed change in the context of their local settings; (3) anticipated problems and built support networks to effectively problem-solve; (4) maintained relationships with stakeholders for meaningful and constructive interactions; and (5) focused on intrinsic qualities that helped them navigate challenges. CONCLUSIONS: International PDs were presented with significant challenges in implementing educational transformation but coped successfully through distinctive patterns and methods.


Assuntos
Internato e Residência , Acreditação , Educação de Pós-Graduação em Medicina , Humanos , Aprendizagem , Pesquisa Qualitativa
18.
BMJ Open ; 11(8): e050133, 2021 08 17.
Artigo em Inglês | MEDLINE | ID: mdl-34404712

RESUMO

OBJECTIVE: To assess the temporal trend and identify risk factors associated with the absence of previous HIV testing prior to their diagnosis among HIV-positive persons in Singapore. STUDY DESIGN: Cross-sectional. SETTING AND PARTICIPANTS: We analysed data of HIV-positive persons infected via sexual transmission, who were notified to the National HIV Registry in 2012-2017. OUTCOMES: Epidemiological factors associated with the absence of HIV testing prior to diagnosis were determined separately for two groups of HIV-positive persons: early and late stages of HIV infection at diagnosis. RESULTS: 2188 HIV-positive persons with information on HIV testing history and CD4 cell count were included in the study. The median age at HIV diagnosis was 40 years (IQR 30-51). Nearly half (45.1%) had never been tested for HIV prior to their diagnosis. The most common reason cited for no previous HIV testing was 'not necessary to test' (73.7%). The proportion diagnosed at late-stage HIV infection was significantly higher among HIV-positive persons who had never been tested for HIV (63.9%) compared with those who had undergone previous HIV tests (29.0%). Common risk factors associated with no previous HIV testing in multivariable logistic regression analysis stratified by stage of HIV infection were: older age at HIV diagnosis, lower educational level, detection via medical care and HIV infection via heterosexual transmission. In the stratified analysis for persons diagnosed at early-stage of HIV infection, in addition to the four risk factors, women and those of Malay ethnicity were also less likely to have previous HIV testing prior to their diagnosis. CONCLUSION: Targeted prevention efforts and strategies are needed to raise the level of awareness of HIV/AIDS and to encourage early and regular screening among the at-risk groups by making HIV testing more accessible.


Assuntos
Síndrome da Imunodeficiência Adquirida , Infecções por HIV , Idoso , Estudos Transversais , Feminino , Infecções por HIV/diagnóstico , Infecções por HIV/epidemiologia , Teste de HIV , Humanos , Singapura/epidemiologia
20.
Medicine (Baltimore) ; 100(26): e26507, 2021 Jul 02.
Artigo em Inglês | MEDLINE | ID: mdl-34190180

RESUMO

ABSTRACT: We investigated the temporal trends of short-term mortality (death within 1 year of diagnosis) and cause-specific deaths in human immunodeficiency virus (HIV)-infected persons by stage of HIV infection at diagnosis. We also assessed the impact of late diagnosis (LD) on short-term mortality.Epidemiological records of HIV-infected Singapore residents from the National HIV Registry were linked to death records from the Registry of Births and Deaths for observational analyses. Newly-diagnosed HIV cases with available cluster of differentiation 4 count at time of diagnosis in a 5-year period from 2012 to 2016 were included in the study. Hazard ratios (HRs) and 95% confidence interval (CI) of LD for all deaths excluding suicides and self-inflicted or accidental injuries, and HIV/ acquired immunodeficiency syndrome (AIDS)-related deaths occurring within 1 year post-diagnosis were calculated using Cox proportional hazards regression models with adjustment for age at HIV/AIDS diagnosis. Population attributable risk proportions (PARPs) were then calculated using the adjusted HRs.Of the 1990 newly-diagnosed HIV cases included in the study, 7.2% had died by end of 2017, giving an overall mortality rate of 2.16 per 100 person-years (PY) (95% CI 1.82-2.54). The mortality rate was 3.81 per 100 PY (95% CI 3.15-4.56) in HIV cases with LD, compared with 0.71 (95% CI 0.46-1.05) in non-LD (nLD) cases. Short-term mortality was significantly higher in LD (9.1%) than nLD cases (1.1%). Of the 143 deaths reported between 2012 and 2017, 58.0% were HIV/AIDS-related (nLD 28.0% vs LD 64.4%). HIV/AIDS-related causes represented 70.4% of all deaths which occurred during the first year of diagnosis (nLD 36.4% vs LD 74.7%). The PARP of short-term mortality due to LD was 77.8% for all deaths by natural causes, and 87.8% for HIV/AIDS-related deaths.The mortality rate of HIV-infected persons with LD was higher than nLD, especially within 1 year of diagnosis, and HIV/AIDS-related causes constituted majority of these deaths. To reduce short-term mortality, persons at high risk of late-stage HIV infection should be targeted in outreach efforts to promote health screening and remove barriers to HIV testing and treatment.


Assuntos
Síndrome da Imunodeficiência Adquirida , Terapia Antirretroviral de Alta Atividade , Diagnóstico Tardio , Infecções por HIV , Mortalidade/tendências , Síndrome da Imunodeficiência Adquirida/diagnóstico , Síndrome da Imunodeficiência Adquirida/etiologia , Síndrome da Imunodeficiência Adquirida/mortalidade , Adulto , Terapia Antirretroviral de Alta Atividade/métodos , Terapia Antirretroviral de Alta Atividade/estatística & dados numéricos , Causas de Morte , Diagnóstico Tardio/efeitos adversos , Diagnóstico Tardio/mortalidade , Diagnóstico Tardio/prevenção & controle , Demografia , Feminino , Infecções por HIV/complicações , Infecções por HIV/diagnóstico , Infecções por HIV/tratamento farmacológico , Infecções por HIV/mortalidade , Humanos , Masculino , Risco Ajustado/métodos , Fatores de Risco , Singapura/epidemiologia , Fatores Socioeconômicos , Tempo para o Tratamento/estatística & dados numéricos
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