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1.
Am J Transplant ; 24(5): 733-742, 2024 May.
Artigo em Inglês | MEDLINE | ID: mdl-38387623

RESUMO

Decompensated cirrhosis and hepatocellular cancer are major risk factors for mortality worldwide. Liver transplantation (LT), both live-donor LT or deceased-donor LT, are lifesaving, but there are several barriers toward equitable access. These barriers are exacerbated in the setting of critical illness or acute-on-chronic liver failure. Rates of LT vary widely worldwide but are lowest in lower-income countries owing to lack of resources, infrastructure, late disease presentation, and limited donor awareness. A recent experience by the Chronic Liver Disease Evolution and Registry for Events and Decompensation consortium defined these barriers toward LT as critical in determining overall survival in hospitalized cirrhosis patients. A major focus should be on appropriate, affordable, and early cirrhosis and hepatocellular cancer care to prevent the need for LT. Live-donor LT is predominant across Asian countries, whereas deceased-donor LT is more common in Western countries; both approaches have unique challenges that add to the access disparities. There are many challenges toward equitable access but uniform definitions of acute-on-chronic liver failure, improving transplant expertise, enhancing availability of resources and encouraging knowledge between centers, and preventing disease progression are critical to reduce LT disparities.


Assuntos
Disparidades em Assistência à Saúde , Cirrose Hepática , Transplante de Fígado , Humanos , Acessibilidade aos Serviços de Saúde , Disparidades em Assistência à Saúde/estatística & dados numéricos , Cirrose Hepática/cirurgia , Cirrose Hepática/complicações
2.
Rural Remote Health ; 23(4): 7999, 2023 11.
Artigo em Inglês | MEDLINE | ID: mdl-37915227

RESUMO

INTRODUCTION: International conferences offer an excellent opportunity for career development and are global academic opportunities with the potential to foster educational and professional growth. However, equitable access to participation and meaningful involvement in such events remains an issue. In this article we describe the novel Rural Early Career Ambassador Integration project and its implications for the 2022 World Rural Health Conference, held at the University of Limerick, Ireland. METHODS: The project offered vertical and cross-country collaborative opportunities to early career professionals with a passion for rural medicine. Three ambassadors of diverse nationalities, ethnicities and professional backgrounds were selected. They bore no personal cost for travel, transport or accommodation relating to the conference. Each ambassador was matched to and clinically shadowed an expert rural GP for a week preceding the conference, who provided mentorship. Mentors and ambassadors collaborated on goal-setting and work-planning throughout the conference, and were offered one-on-one career and networking support. The ambassadors were welcomed and integrated within a larger working party, the WONCA Working Party for Rural Health. RESULTS: The project was well received by conference delegates and organisers, and achieved its stated goal of enhancing conference equity through the representation and meaningful involvement of diverse early career professionals. Vertical and cross-country collaboration generated actionable policy implications as is evidenced by the ambassadors' co-authorship on the Limerick Declaration on Rural Healthcare. CONCLUSION: Although sponsorship for these initiatives remains a challenge, this project highlights the importance of actively including early career professionals at international conferences.


Assuntos
Serviços de Saúde Rural , Saúde da População Rural , Humanos , População Rural , Saúde Global , Irlanda
3.
Frontline Gastroenterol ; 14(5): 359-370, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37581186

RESUMO

As a result of the increasing incidence of cirrhosis in the UK, more patients with chronic liver disease are being considered for elective non-hepatic surgery. A historical reluctance to offer surgery to such patients stems from general perceptions of poor postoperative outcomes. While this is true for those with decompensated cirrhosis, selected patients with compensated early-stage cirrhosis can have good outcomes after careful risk assessment. Well-recognised risks include those of general anaesthesia, bleeding, infections, impaired wound healing, acute kidney injury and cardiovascular compromise. Intra-abdominal or cardiothoracic surgery are particularly high-risk interventions. Clinical assessment supplemented by blood tests, imaging, liver stiffness measurement, endoscopy and assessment of portal pressure (derived from the hepatic venous pressure gradient) can facilitate risk stratification. Traditional prognostic scoring systems including the Child-Turcotte-Pugh and Model for End-stage Liver Disease are helpful but may overestimate surgical risk. Specific prognostic scores like Mayo Risk Score, VOCAL-Penn and ADOPT-LC can add precision to risk assessment. Measures to mitigate risk include careful management of varices, nutritional optimisation and where possible addressing any ongoing aetiological drivers such as alcohol consumption. The role of portal decompression such as transjugular intrahepatic portosystemic shunting can be considered in selected high-risk patients, but further prospective study of this approach is required. It is of paramount importance that patients are discussed in a multidisciplinary forum, and that patients are carefully counselled about potential risks and benefits.

4.
Rural Remote Health ; 23(1): 7905, 2023 01.
Artigo em Inglês | MEDLINE | ID: mdl-36631080

RESUMO

The 19th World Rural Health Conference, hosted in rural Ireland and the University of Limerick, with over 650 participants coming from 40 countries and an additional 1600 engaging online, has carefully considered how best rural communities can be empowered to improve their own health and the health of those around them. The conference also considered the role of national health systems and all stakeholders, in keeping with the commitments made through the Sustainable Development Goals and the enjoyment of the highest attainable standard of health as one of the fundamental rights of every human being. This conference declaration, the Limerick Declaration on Rural Healthcare, is designed to inform rural communities, academics and policymakers about how to achieve the goal of delivering high quality health care in rural and remote areas most effectively, with a particular focus on the Irish healthcare system. Congruent with current evidence and best international practice, the participants of the conference endorsed a series of recommendations for the creation of high quality, sustainable and cost-effective healthcare delivery for rural communities in Ireland and globally. The recommendations focused on four major themes: rural healthcare needs and delivery, rural workforce, advocacy and policy, and research for rural health care. Equal access to health care is a crucial marker of democracy. Hence, we call on all governments, policymakers, academic institutions and communities globally to commit to providing their rural dwellers with equitable access to health care that is properly resourced and fundamentally patient-centred in its design.


Assuntos
Serviços de Saúde Rural , Saúde da População Rural , Humanos , Atenção à Saúde , População Rural , Recursos Humanos
5.
Front Immunol ; 13: 1029029, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-36532063

RESUMO

Introduction: Immunological protection against human immunodeficiency virus-1 (HIV-1) infection is likely to require both humoral and cell-mediated immune responses, the latter involving cytotoxic CD8 T-cells. Characterisation of CD8 T-cell mediated direct anti-viral activity would provide understanding of potential correlates of immune protection and identification of critical epitopes associated with HIV-1 control. Methods: The present report describes a functional viral inhibition assay (VIA) to assess CD8 T-cell-mediated inhibition of replication of a large and diverse panel of 45 HIV-1 infectious molecular clones (IMC) engineered with a Renilla reniformis luciferase reporter gene (LucR), referred to as IMC-LucR. HIV-1 IMC replication in CD4 T-cells and CD8 T-cell mediated inhibition was characterised in both ART naive subjects living with HIV-1 covering a broad human leukocyte antigen (HLA) distribution and compared with uninfected subjects. Results & discussion: CD4 and CD8 T-cell lines were established from subjects vaccinated with a candidate HIV-1 vaccine and provided standard positive controls for both assay quality control and facilitating training and technology transfer. The assay was successfully established across 3 clinical research centres in Kenya, Uganda and the United Kingdom and shown to be reproducible. This IMC-LucR VIA enables characterisation of functional CD8 T-cell responses providing a tool for rational T-cell immunogen design of HIV-1 vaccine candidates and evaluation of vaccine-induced T-cell responses in HIV-1 clinical trials.


Assuntos
Infecções por HIV , HIV-1 , Humanos , Linfócitos T CD8-Positivos , Luciferases , Células Clonais
6.
BMC Fam Pract ; 21(1): 139, 2020 07 10.
Artigo em Inglês | MEDLINE | ID: mdl-32650725

RESUMO

BACKGROUND: Uncontrolled blood pressure (BP) is an important modifiable risk factor for recurrent stroke. Secondary prevention measures when implemented can reduce stroke re-occurrence by 80%. However, hypertension control rates remain sub-optimal, and little data is available from primary care where most management occurs. The aim of this study was to describe BP control in primary care-based patients with a previous stroke or transient ischaemic attack (TIA) in Ireland, and to concurrently examine antihypertensive medication-dosing. METHODS: Study participants most recent office-based BP reading was compared with the NICE (NG136) and European Society of Hypertension/ European Society of Cardiology (ESH/ESC 2013) goal of BP < 140/90 mmHg. Optimal anti-hypertensive medication dosing was determined by benchmarking prescribed doses for each drug with the World Health Organisation-Defined Daily Dosing (WHO-DDD) recommendations. RESULTS: We identified 328 patients with a previous stroke or TIA in 10 practices. Blood pressure was controlled in almost two thirds of patients when measured against the ESH/ESC and NICE guidelines (63.1%, n = 207). Of those with BP ≥140/90 (n = 116), just under half (n = 44, 47.3%) were adequately dosed in all anti-hypertensive medications when compared with the WHO-DDD recommendations. CONCLUSION: Blood pressure control in patients post stroke/TIA appears sub-optimal in over one third of patients. A comparison of drug doses with WHO-DDD recommendations suggests that 47% of patients may benefit from drug-dose improvements. Further work is required to assess how best to manage blood pressure in patients with a previous stroke or TIA in Primary Care, as most consultations for hypertension take place in this setting.


Assuntos
Anti-Hipertensivos/administração & dosagem , Determinação da Pressão Arterial , Hipertensão , Ataque Isquêmico Transitório , Atenção Primária à Saúde , Prevenção Secundária , Acidente Vascular Cerebral , Idoso , Determinação da Pressão Arterial/métodos , Determinação da Pressão Arterial/estatística & dados numéricos , Relação Dose-Resposta a Droga , Prescrições de Medicamentos/normas , Prescrições de Medicamentos/estatística & dados numéricos , Feminino , Humanos , Hipertensão/complicações , Hipertensão/diagnóstico , Hipertensão/tratamento farmacológico , Irlanda/epidemiologia , Ataque Isquêmico Transitório/diagnóstico , Ataque Isquêmico Transitório/epidemiologia , Ataque Isquêmico Transitório/prevenção & controle , Masculino , Guias de Prática Clínica como Assunto , Prevalência , Atenção Primária à Saúde/métodos , Atenção Primária à Saúde/estatística & dados numéricos , Melhoria de Qualidade , Prevenção Secundária/métodos , Prevenção Secundária/normas , Prevenção Secundária/estatística & dados numéricos , Acidente Vascular Cerebral/epidemiologia , Acidente Vascular Cerebral/etiologia , Acidente Vascular Cerebral/prevenção & controle
7.
BMC Med Educ ; 20(1): 183, 2020 Jun 03.
Artigo em Inglês | MEDLINE | ID: mdl-32493427

RESUMO

BACKGROUND: Medical School programme workloads challenge the physical and mental health of students particularly in compressed graduate entry programmes. There is evidence that physical activity (PA) can improve holistic care and help maintain wellness among medical students. We tested the feasibility of introducing an exercise programme to the medical school curriculum which would educate and promote health and well-being among its students. METHODS: This study was conducted in a single graduate entry medical school at the University of Limerick (UL). The 'MED-WELL' programme was a six-week programme of 1 hour-long weekly sessions, each involving a different type of PA (45 min). These sessions were prefaced by an interactive lecture about how to incorporate exercise theory into daily medical practice (15 min). The study was conducted in a single graduate entry medical school at UL and involved year one and year two graduate entry medical students. Three parameters were used to test feasibility: 1. Recruitment and retention of participants, 2. Acceptability of the programme and 3. Efficacy in terms of health and well-being. The latter was assessed by administering questionnaires pre and post the intervention. The questionnaires used the following validated measurement scales: EQ-VAS; WHO-5 Well-Being Index; 3-item Loneliness Scale; Social Support Measure 3-item scale. Free text boxes also encouraged participants to discuss the merits of the programme. RESULTS: In total, 26% (74/286 students) participated in the programme. Of those who participated, 69 students (93%) attended one or more sessions of the programme and completed questionnaires at baseline and at follow-up. Significant improvements were seen in scores after the programme in the WHO-5 Well-Being Index which increased from 63.2 (95%CI: 48-78.4) to 67.5 (95%CI: 55.1-79.9); (P < 0.01), the sleep scale which increased from 3.1 (95%CI: 2.2-4.0) to 3.5 (95%CI: 2.5-4.5); (P < 0.001), and the loneliness scale which decreased from 4.1 (95%CI: 2.7-5.5) to 3.5 (95%CI: 2.5-4.5); (P < 0.005). Students level of PA during a typical week also increased from 3.7 (95%CI: 2.1-5.4) to 4.0 (95%CI, 3.5-4.5); (P < 0.05). CONCLUSION: This study has shown it is feasible to deliver this programme in a medical school's curriculum. The programme seems to be of benefit and is acceptable to students. Well-designed randomised controlled trials are needed to measure outcomes, durability of effect, and cost effectiveness.


Assuntos
Currículo , Educação de Graduação em Medicina , Exercício Físico , Promoção da Saúde/métodos , Saúde Mental , Estudantes de Medicina/psicologia , Adulto , Estudos de Viabilidade , Feminino , Humanos , Masculino , Inquéritos e Questionários , Adulto Jovem
8.
Mar Pollut Bull ; 129(1): 241-244, 2018 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-29680543

RESUMO

The spatial extent of human activities must be understood for consistent and proportionate regulation, and effective marine planning. Redundant offshore pipelines can be removed or left in situ, but data on the footprint of these options are not readily available. The extents of three North Sea in situ decommissioning scenarios are presented. Leaving pipelines in situ would occupy <0.01% (12.3 km2) of UK waters, and this was similar to, or smaller than, other regulated activities (e.g. aggregate extraction). Adding armouring to large pipelines occupied up to 95 km2, while creating fisheries exclusion zones occupied up to 1119 km2. Removal of pipelines >30″ would be required to regain 50% or more of the seabed currently occupied. At present, the technology to remove pipelines >16″ safely and cost-efficiently is untested for large-scale decommissioning projects. The summaries presented inform the debate over the significance of decommissioning, and the regional consequences of different options.


Assuntos
Conservação dos Recursos Naturais , Pesqueiros , Campos de Petróleo e Gás , Indústria de Petróleo e Gás , Conservação dos Recursos Naturais/economia , Conservação dos Recursos Naturais/legislação & jurisprudência , Política Ambiental , Mar do Norte , Reino Unido
9.
Endosc Int Open ; 6(3): E292-E299, 2018 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-29507869

RESUMO

BACKGROUND AND STUDY AIMS: Polypoid lesions found during upper gastrointestinal endoscopy (UGIE) are occasionally found in patients with portal hypertension (PH). This study aimed to assess the true nature of such polypoid lesions using endoscopic ultrasound (EUS) and determine the accuracy of UGIE in differentiating between vascular and non-vascular lesions in PH. PATIENTS AND METHODS: We retrospectively assessed all patients with PH referred for EUS due to polypoid lesions of unknown nature at UGIE over a 7-year period. Cases of known varices were excluded. UGIE findings were compared to EUS findings. RESULTS: 66 patients were included (26 male). Commonest UGIE findings were: possible varices (19.4 %), polypoid/neoplastic lesion (52.8 %) and submucosal lesion (16.7 %). After EUS, the final diagnoses were: varices in 25 %, polypoid lesion with underlying vessel/varix in 27.8 % and non-vascular lesion or submucosal lesion in 47.2 %. The diagnostic accuracy of UGIE was suboptimal, since 28.6 % of possible varices were eventually found to be non-vascular, while 15.8 % of polyp/neoplastic looking lesions proved to be varices and 42.1 % were lesions with underlying vessel/varix. 50 % of submucosal lesions were eventually found to be varices. CONCLUSION: Endoscopists should have a high index of suspicion of varices or polyps related to varices when assessing atypical looking polypoid lesions in patients with PH. In such cases EUS should be considered before obtaining biopsies.

10.
Liver Int ; 38(8): 1402-1410, 2018 08.
Artigo em Inglês | MEDLINE | ID: mdl-29288595

RESUMO

BACKGROUND & AIMS: To describe the burden on inpatient hospital resources over time from patients diagnosed with hepatitis C virus (HCV) infection and who have reached the decompensated stage of cirrhosis (DC), as existing estimates of hospital stay in these patients are limited. METHODS: A retrospective longitudinal dataset was formed via record-linkage between the national HCV diagnosis database and inpatient/daycase hospitalisation and death registers in Scotland. The study population consisted of HCV-diagnosed patients with a first DC admission in 1996-2013, with follow-up available until 31 May 2014. We investigated and quantified the mean cumulative length of hospital stay, distributions over discharge diagnosis categories, and trends in admission rates. RESULTS: Among our study population (n = 1543), we identified 10 179 admissions with any diagnosis post-first DC admission. Between 1996 and 2013 there was a 16-fold rise in annual total admissions (from 112 to 1791) and an 11-fold rise in hospital stay (719-8045). When restricting minimum possible follow-up to 2 years, DC patients (n = 1312) had an overall admission rate of 7.3 per person-year, and spent on average 43 days (26 days during first 6 months) in hospital; for all liver-related, liver-related other than HCC/DC, and non-liver related only admissions, this was 39, 14, and 5 days respectively. CONCLUSIONS: HCV-infected DC patients impose a considerable inpatient hospital burden, mostly from DC- and other liver-related admissions, but also from admissions associated with non-liver comorbidities. Estimates will be useful for monitoring the impact of prevention and treatment, and for computing the cost-effectiveness of new therapies.


Assuntos
Efeitos Psicossociais da Doença , Hepatite C Crônica/complicações , Pacientes Internados/estatística & dados numéricos , Tempo de Internação/estatística & dados numéricos , Cirrose Hepática/epidemiologia , Adulto , Idoso , Análise Custo-Benefício , Bases de Dados Factuais , Feminino , Hepacivirus/genética , Hepatite C Crônica/epidemiologia , Humanos , Cirrose Hepática/terapia , Estudos Longitudinais , Masculino , Pessoa de Meia-Idade , Modelos de Riscos Proporcionais , Estudos Retrospectivos , Escócia/epidemiologia
11.
Patient Educ Couns ; 101(1): 147-151, 2018 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-28838631

RESUMO

BACKGROUND: Comparing outcome of clinical skills assessment is challenging. This study proposes reliable and valid comparison of communication skills (1) assessment as practiced in Objective Structured Clinical Examinations (2). The aim of the present study is to compare CS assessment, as standardized according to the MAAS Global, between stations in a single undergraduate medical year. METHODS: An OSCE delivered in an Irish undergraduate curriculum was studied. We chose the MAAS-Global as an internationally recognized and validated instrument to calibrate the OSCE station items. The MAAS-Global proportion is the percentage of station checklist items that can be considered as 'true' CS. The reliability of the OSCE was calculated with G-Theory analysis and nested ANOVA was used to compare mean scores of all years. RESULTS: MAAS-Global scores in psychiatry stations were significantly higher than those in other disciplines (p<0.03) and above the initial pass mark of 50%. The higher students' scores in psychiatry stations were related to higher MAAS-Global proportions when compared to the general practice stations. CONCLUSION: Comparison of outcome measurements, using the MAAS Global as a standardization instrument, between interdisciplinary station checklists was valid and reliable. PRACTICE IMPLICATIONS: The MAAS-Global was used as a single validated instrument and is suggested as gold standard.


Assuntos
Lista de Checagem , Competência Clínica/normas , Comunicação , Educação de Graduação em Medicina , Avaliação Educacional/normas , Estudantes de Medicina , Adulto , Avaliação Educacional/métodos , Feminino , Humanos , Masculino , Reprodutibilidade dos Testes
12.
J Hepatol ; 68(3): 393-401, 2018 03.
Artigo em Inglês | MEDLINE | ID: mdl-29107152

RESUMO

BACKGROUND & AIMS: The advent of direct-acting antivirals (DAAs) has led to ambitious targets for hepatitis C virus (HCV) elimination. However, in the context of alcohol use disorder the ability of DAAs to achieve these targets may be compromised. The aim of this study was to evaluate the contribution of alcohol use disorder to HCV-related decompensated cirrhosis in three settings. METHODS: HCV notifications from British Columbia, Canada; New South Wales, Australia, and Scotland (1995-2011/2012/2013, respectively) were linked to hospital admissions (2001-2012/2013/2014, respectively). Alcohol use disorder was defined as non-liver-related hospitalisation due to alcohol use. Age-standardised decompensated cirrhosis incidence rates were plotted, associated factors were assessed using Cox regression, and alcohol use disorder-associated population attributable fractions (PAFs) were computed. RESULTS: Among 58,487, 84,529, and 31,924 people with HCV in British Columbia, New South Wales, and Scotland, 2,689 (4.6%), 3,169 (3.7%), and 1,375 (4.3%) had a decompensated cirrhosis diagnosis, and 28%, 32%, and 50% of those with decompensated cirrhosis had an alcohol use disorder, respectively. Age-standardised decompensated cirrhosis incidence rates were considerably higher in people with alcohol use disorder in New South Wales and Scotland. Decompensated cirrhosis was independently associated with alcohol use disorder in British Columbia (aHR 1.92; 95% CI 1.76-2.10), New South Wales (aHR 3.68; 95% CI 3.38-4.00) and Scotland (aHR 3.88; 95% CI 3.42-4.40). The PAFs of decompensated cirrhosis-related to alcohol use disorder were 13%, 25%, and 40% in British Columbia, New South Wales and Scotland, respectively. CONCLUSIONS: Alcohol use disorder was a major contributor to HCV liver disease burden in all settings, more distinctly in Scotland. The extent to which alcohol use would compromise the individual and population-level benefits of DAA therapy needs to be closely monitored. Countries, where appropriate, must develop strategies combining promotion of DAA treatment uptake with management of alcohol use disorders, if World Health Organization 2030 HCV mortality reduction targets are going to be achieved. LAY SUMMARY: The burden of liver disease has been rising among people with hepatitis C globally. The recent introduction of highly effective medicines against hepatitis C (called direct-acting antivirals or DAAs) has brought renewed optimism to the sector. DAA scale-up could eliminate hepatitis C as a public health threat in the coming decades. However, our findings show heavy alcohol use is a major risk factor for liver disease among people with hepatitis C. If continued, heavy alcohol use could compromise the benefits of new antiviral treatments at the individual- and population-level. To tackle hepatitis C as a public health threat, where needed, DAA therapy should be combined with management of heavy alcohol use.


Assuntos
Alcoolismo , Efeitos Psicossociais da Doença , Hepatite C Crônica , Hospitalização/estatística & dados numéricos , Cirrose Hepática , Alcoolismo/complicações , Alcoolismo/economia , Alcoolismo/epidemiologia , Alcoolismo/prevenção & controle , Austrália/epidemiologia , Colúmbia Britânica/epidemiologia , Progressão da Doença , Feminino , Promoção da Saúde , Hepatite C Crônica/complicações , Hepatite C Crônica/epidemiologia , Humanos , Incidência , Cirrose Hepática/economia , Cirrose Hepática/epidemiologia , Cirrose Hepática/etiologia , Cirrose Hepática/terapia , Masculino , Pessoa de Meia-Idade , Avaliação das Necessidades , Fatores de Risco , Escócia/epidemiologia
13.
Biomed Res Int ; 2017: 9281450, 2017.
Artigo em Inglês | MEDLINE | ID: mdl-28698881

RESUMO

A significant unmet need exists for accurate, reproducible, noninvasive diagnostic tools to assess and monitor portal hypertension (PHT). We report the first use of quantitative MRI markers for the haemodynamic assessment of nonselective beta-blockers (NSBB) in PHT. In a randomized parallel feasibility study in 22 adult patients with PHT and a clinical indication for NSBB, we acquired haemodynamic data at baseline and after 4 weeks of NSBB (propranolol or carvedilol) using phase-contrast MR angiography (PC-MRA) in selected intra-abdominal vessels. T1 mapping of liver and spleen was undertaken to assess changes in tissue composition. Target NSBB dose was achieved in 82%. There was a substantial reduction from baseline in mean average flow in the superior abdominal aorta after 4 weeks of NSBB therapy (4.49 ± 0.98 versus 3.82 ± 0.86 L/min, P = 0.03) but there were no statistically significant differences in flow in any other vessels, even in patients with >25% decrease in heart rate (47% of patients). Mean percentage change in liver and spleen T1 following NSBB was small and highly variable. In conclusion, PC-MRA was able to detect reduction in cardiac output by NSBB but did not detect significant changes in visceral blood flow or T1. This trial was registered with the ISRCTN registry (ISRCTN98001632).


Assuntos
Antagonistas Adrenérgicos beta/administração & dosagem , Aorta Abdominal , Carbazóis/administração & dosagem , Meios de Contraste/administração & dosagem , Hemodinâmica/efeitos dos fármacos , Hipertensão Portal , Angiografia por Ressonância Magnética , Propanolaminas/administração & dosagem , Propranolol/administração & dosagem , Idoso , Aorta Abdominal/diagnóstico por imagem , Aorta Abdominal/fisiopatologia , Carvedilol , Feminino , Humanos , Hipertensão Portal/diagnóstico por imagem , Hipertensão Portal/tratamento farmacológico , Hipertensão Portal/fisiopatologia , Masculino , Pessoa de Meia-Idade
14.
Ann Intern Med ; 164(5): 313-22, 2016 Mar 01.
Artigo em Inglês | MEDLINE | ID: mdl-26833336

RESUMO

BACKGROUND: A prophylactic HIV-1 vaccine is a global health priority. OBJECTIVE: To assess a novel vaccine platform as a prophylactic HIV-1 regimen. DESIGN: Randomized, double-blind, placebo-controlled trial. Both participants and study personnel were blinded to treatment allocation. (ClinicalTrials.gov: NCT01215149). SETTING: United States, East Africa, and South Africa. PATIENTS: Healthy adults without HIV infection. INTERVENTION: 2 HIV-1 vaccines (adenovirus serotype 26 with an HIV-1 envelope A insert [Ad26.EnvA] and adenovirus serotype 35 with an HIV-1 envelope A insert [Ad35.Env], both administered at a dose of 5 × 1010 viral particles) in homologous and heterologous combinations. MEASUREMENTS: Safety and immunogenicity and the effect of baseline vector immunity. RESULTS: 217 participants received at least 1 vaccination, and 210 (>96%) completed follow-up. No vaccine-associated serious adverse events occurred. All regimens were generally well-tolerated. All regimens elicited humoral and cellular immune responses in nearly all participants. Preexisting Ad26- or Ad35-neutralizing antibody titers had no effect on vaccine safety and little effect on immunogenicity. In both homologous and heterologous regimens, the second vaccination significantly increased EnvA antibody titers (approximately 20-fold from the median enzyme-linked immunosorbent assay titers of 30-300 to 3000). The heterologous regimen of Ad26-Ad35 elicited significantly higher EnvA antibody titers than Ad35-Ad26. T-cell responses were modest and lower in East Africa than in South Africa and the United States. LIMITATIONS: Because the 2 envelope inserts were not identical, the boosting responses were complex to interpret. Durability of the immune responses elicited beyond 1 year is unknown. CONCLUSION: Both vaccines elicited significant immune responses in all populations. Baseline vector immunity did not significantly affect responses. Second vaccinations in all regimens significantly boosted EnvA antibody titers, although vaccine order in the heterologous regimen had a modest effect on the immune response. PRIMARY FUNDING SOURCE: International AIDS Vaccine Initiative, National Institutes of Health, Ragon Institute, Crucell Holland.


Assuntos
Vacinas contra a AIDS/efeitos adversos , Vacinas contra a AIDS/imunologia , Infecções por HIV/prevenção & controle , HIV-1 , Adenoviridae , Adolescente , Adulto , África Oriental , Formação de Anticorpos , Método Duplo-Cego , Ensaio de Imunoadsorção Enzimática , Feminino , Vetores Genéticos , HIV-1/imunologia , Humanos , Imunidade Celular , Imunidade Humoral , Masculino , Pessoa de Meia-Idade , África do Sul , Estados Unidos , Adulto Jovem
15.
Liver Transpl ; 22(4): 527-35, 2016 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-26823231

RESUMO

The etiology and outcomes of acute liver failure (ALF) have changed since the definition of this disease entity in the 1970s. In particular, the role of emergency liver transplantation has evolved over time, with the development of prognostic scoring systems to facilitate listing of appropriate patients, and a better understanding of transplant benefit in patients with ALF. This review examines the changing etiology of ALF, transplant benefit, outcomes following transplantation, and future alternatives to emergency liver transplantation in this devastating condition.


Assuntos
Falência Hepática Aguda/cirurgia , Transplante de Fígado/tendências , Doenças Raras/cirurgia , Acetaminofen/efeitos adversos , Acetilcisteína/uso terapêutico , Analgésicos não Narcóticos/efeitos adversos , Doença Hepática Induzida por Substâncias e Drogas/tratamento farmacológico , Contraindicações , Sequestradores de Radicais Livres/uso terapêutico , Humanos , Falência Hepática Aguda/tratamento farmacológico , Falência Hepática Aguda/etiologia , Falência Hepática Aguda/mortalidade , Prognóstico , Qualidade de Vida , Doenças Raras/tratamento farmacológico , Doenças Raras/etiologia , Taxa de Sobrevida , Resultado do Tratamento , Listas de Espera/mortalidade
16.
Clin Liver Dis ; 18(3): 529-41, 2014 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-25017074

RESUMO

With the incidence of liver disease increasing worldwide, a growing number of patients are being referred for assessment for liver transplant (LT). Unfortunately, the donor pool is not expanding at the same rate, which consequentially results in increasing demand on a finite resource. It is therefore imperative that the candidate who undergoes an LT gets maximal benefit with a resultant maximal increase in life expectancy. This article addresses some of the main cardiac and pulmonary issues that may occur in LT assessment candidates.


Assuntos
Transplante de Fígado , Seleção de Pacientes , Doenças Cardiovasculares/complicações , Doença Hepática Terminal/complicações , Doença Hepática Terminal/cirurgia , Síndrome Hepatopulmonar/complicações , Humanos , Hipertensão Portal/complicações , Hipertensão Pulmonar/complicações , Transplante de Fígado/efeitos adversos , Pneumopatias/complicações , Prognóstico , Medição de Risco
17.
J Hepatol ; 60(6): 1118-26, 2014 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-24509410

RESUMO

BACKGROUND & AIMS: Given an appreciable risk of adverse-effects, current therapies for chronic hepatitis C virus (HCV) infection pose a dilemma to patients. We explored, via simulation modelling, patient-important benefits of attaining a sustained viral response (SVR). METHODS: We created the HCV Individualised Treatment-decision model (the HIT-model) to simulate, on a per patient basis, the lifetime course of HCV-related liver disease according to two distinct scenarios: (i) SVR attained, and (ii) SVR not attained. Then, for each model subject, the course of liver disease under these alternative scenarios was compared. The benefit of SVR was considered in terms of two patient-important outcomes: (1) the percent-probability that SVR confers additional life-years, and (2) the percent-probability that SVR confers additional healthy life-years, where "healthy" refers to years spent in compensated disease states (i.e., the avoidance of liver failure). RESULTS: The benefit of SVR varied strikingly. It was lowest for patients aged 60 years with initially mild fibrosis; 1.6% (95% CI: 0.8-2.7) and 2.9% (95% CI: 1.5-4.7) probability of gaining life-years and healthy life-years, respectively. Whereas it was highest for patients with initially compensated cirrhosis aged 30 years; 57.9% (95% CI: 46.0-69.0) and 67.1% (95% CI: 54.1-78.2) probability of gaining life-years and healthy life-years, respectively. CONCLUSIONS: For older patients with less advanced liver fibrosis, SVR is less likely to confer benefit when measured in terms of averting liver failure and premature death. These data have important implications. Foremost, it may inform the contemporary patient dilemma of immediate treatment with existing therapies (that have poor adverse effect profiles) vs. awaiting future regimens that promise better tolerability.


Assuntos
Antivirais/efeitos adversos , Técnicas de Apoio para a Decisão , Hepacivirus/efeitos dos fármacos , Hepatite C Crônica/tratamento farmacológico , Hepatite C Crônica/mortalidade , Cirrose Hepática/tratamento farmacológico , Cirrose Hepática/mortalidade , Adulto , Antivirais/administração & dosagem , Quimioterapia Combinada , Humanos , Interferon-alfa/uso terapêutico , Cirrose Hepática/virologia , Cadeias de Markov , Pessoa de Meia-Idade , Modelos Estatísticos , Prognóstico , Ribavirina/uso terapêutico , Medição de Risco/métodos , Índice de Gravidade de Doença
18.
Orthopedics ; 36(8): e1065-70, 2013 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-23937755

RESUMO

The purpose of this study was to determine the incidence of and evaluate the risk for complications and mortality following open treatment of acetabular fractures in the Medicare population. Patients treated with open reduction and internal fixation (ORIF) for acetabular fractures were identified using current procedural terminology codes in a 5% national sample of Medicare records. Complications within 90 days and within 1 year were evaluated based on the presence of ICD-9-CM diagnosis codes and Current Procedural Terminology reoperation codes. A total of 1286 fractures were treated closed and 359 were treated with ORIF. Multivariate Cox regression was performed to compare complication rates and risk factors. The incidence of acetabular fractures in the Medicare population has increased by 29% since 1998. Complications in the ORIF group included cardiac complications, deep venous thrombosis, infection, pulmonary embolism, refixation, and conversion to total hip arthroplasty. Risk factors for complications with ORIF included advanced age and comorbidities. Mortality in the ORIF group was 14.4% at 1 year. The incidence of reoperation with conversion to total hip arthroplasty or revision fixation following ORIF is 10% and 15%, respectively. Further investigation is required to improve outcomes and decrease complications in this group of patients, especially cardiac, deep vein thrombosis, and infection.


Assuntos
Acetábulo/lesões , Fixação Interna de Fraturas/mortalidade , Fraturas Ósseas/mortalidade , Fraturas Ósseas/cirurgia , Medicare/estatística & dados numéricos , Osteotomia/mortalidade , Complicações Pós-Operatórias/mortalidade , Idoso , Idoso de 80 Anos ou mais , Animais , Gatos , Feminino , Humanos , Masculino , Prevalência , Fatores de Risco , Taxa de Sobrevida , Resultado do Tratamento , Estados Unidos/epidemiologia
19.
Hepatology ; 57(2): 451-60, 2013 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-22961861

RESUMO

UNLABELLED: A substantial baseline risk of liver cirrhosis exists for patients with chronic hepatitis C virus (HCV) infection. However, the extent to which this could be driven by heavy alcohol use is unclear. Therefore, our principal aim was to determine the fraction of cirrhosis attributable to heavy alcohol use among chronic HCV patients attending a liver clinic. The study population comprised chronic HCV patients who had attended one of five liver clinics in Scotland during 1996-2010 and had (1) remained in follow-up for at least 6 months, (2) acquired HCV through either injecting drugs or blood transfusion, and (3) an estimated date of acquiring infection. Predictors of cirrhosis were determined from multivariate logistic regression. Regression parameters were used to determine the fraction of cirrhosis attributable to heavy alcohol use. Among 1,620 patients, 9% were diagnosed with cirrhosis, and 34% had ever engaged in heavy alcohol use (>50 units/week for a sustained period). Significant predictors of cirrhosis were age, duration of infection, and ever heavy alcohol use. The fraction of cirrhosis attributable to ever heavy alcohol use was 36.1% (95% confidence interval [CI]: 24.4-47.4). Moreover, among patients who had ever engaged in heavy alcohol use specifically, this attributable fraction exceeded 50% (61.6%; 95% CI: 47.0-72.2). CONCLUSIONS: A substantial proportion of patients with chronic HCV develop liver cirrhosis as a consequence of heavy alcohol use. This has not been adequately acknowledged by cost utility analyses (CUAs). As such, estimates of cost-effectiveness may be exaggerated. Thus, these data are important to guide forthcoming CUAs in terms of taking better account of the factors leading to cirrhosis among patients with chronic HCV.


Assuntos
Hepatite C Crônica/complicações , Cirrose Hepática Alcoólica/etiologia , Cirrose Hepática/virologia , Adulto , Alcoolismo/complicações , Análise Custo-Benefício , Progressão da Doença , Feminino , Hepatite C Crônica/economia , Humanos , Cirrose Hepática/complicações , Cirrose Hepática/economia , Cirrose Hepática/epidemiologia , Cirrose Hepática Alcoólica/economia , Masculino , Pessoa de Meia-Idade , Escócia/epidemiologia
20.
Hepatology ; 54(5): 1547-58, 2011 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-22045672

RESUMO

UNLABELLED: Our objective was to address two shortfalls in the hepatitis C virus (HCV) literature: (1) Few data exist comparing post-treatment liver-related mortality/morbidity in HCV-sustained virologic response (SVR) patients to non-SVR patients and (2) no data exist examining liver-related morbidity among treatment response subgroups,particularly among noncirrhotic SVR patients, a group who in the main are discharged from care without further follow-up. A retrospective cohort of 1,215 previously naïve HCV interferon patients (treated 1996-2007)was derived using HCV clinical databases from nine Scottish clinics. Patients were followed up post-treatment for a mean of 5.3 years. (1) By Cox-regression, liver-related hospital episodes (adjusted hazard ratio [AHR]:0.22; 95% confidence interval [CI]: 0.15-0.34) and liver-related mortality [corrected] (AHR: 0.22; 95% CI: 0.09-0.58)were significantly lower in SVR patients, compared to non-SVR patients. (2) Rates of liver-related hospitalization were elevated among all treatment subgroups compared to the general population: Among noncirrhotic SVR patients, adjusted standardized morbidity ratio (SMBR) up to 5.9 (95% CI: 4.5-8.0); among all SVR patients,SMBR up to 10.5 (95% CI: 8.7-12.9); and among non-SVR patients, SMBR up to 53.2 (95% CI: 49.4-57.2).Considerable elevation was also noted among patients who have spontaneously resolved their HCV infection(a control group used to gauge the extent to which lifestyle factors, and not chronic HCV, can contribute toliver-related morbidity), SMBR up to 26.8 (95% CI: 25.3-28.3). CONCLUSIONS: (1) Patients achieving an SVR were more than four times less likely to be hospitalized, or die for a liver-related reason, than non-SVR patients and (2) although discharged, noncirrhotic SVR patients harbor a disproportionate burden of liver-related morbidity; up to six times that of the general population. Further, alarming levels of liver-related morbidity in spontaneous resolvers is an important finding warranting further study..


Assuntos
Antivirais/uso terapêutico , Hepatite C Crônica/tratamento farmacológico , Hepatite C Crônica/mortalidade , Cirrose Hepática/mortalidade , Hepatopatias Alcoólicas/mortalidade , Adulto , Antivirais/economia , Bases de Dados Factuais/estatística & dados numéricos , Custos de Medicamentos/estatística & dados numéricos , Feminino , Hepatite C Crônica/economia , Hospitalização/economia , Hospitalização/estatística & dados numéricos , Humanos , Masculino , Morbidade , Alta do Paciente/estatística & dados numéricos , Prevalência , Modelos de Riscos Proporcionais , Estudos Retrospectivos , Escócia/epidemiologia
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