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1.
N Engl J Med ; 384(6): 497-511, 2021 02 11.
Artigo em Inglês | MEDLINE | ID: mdl-33264556

RESUMO

BACKGROUND: World Health Organization expert groups recommended mortality trials of four repurposed antiviral drugs - remdesivir, hydroxychloroquine, lopinavir, and interferon beta-1a - in patients hospitalized with coronavirus disease 2019 (Covid-19). METHODS: We randomly assigned inpatients with Covid-19 equally between one of the trial drug regimens that was locally available and open control (up to five options, four active and the local standard of care). The intention-to-treat primary analyses examined in-hospital mortality in the four pairwise comparisons of each trial drug and its control (drug available but patient assigned to the same care without that drug). Rate ratios for death were calculated with stratification according to age and status regarding mechanical ventilation at trial entry. RESULTS: At 405 hospitals in 30 countries, 11,330 adults underwent randomization; 2750 were assigned to receive remdesivir, 954 to hydroxychloroquine, 1411 to lopinavir (without interferon), 2063 to interferon (including 651 to interferon plus lopinavir), and 4088 to no trial drug. Adherence was 94 to 96% midway through treatment, with 2 to 6% crossover. In total, 1253 deaths were reported (median day of death, day 8; interquartile range, 4 to 14). The Kaplan-Meier 28-day mortality was 11.8% (39.0% if the patient was already receiving ventilation at randomization and 9.5% otherwise). Death occurred in 301 of 2743 patients receiving remdesivir and in 303 of 2708 receiving its control (rate ratio, 0.95; 95% confidence interval [CI], 0.81 to 1.11; P = 0.50), in 104 of 947 patients receiving hydroxychloroquine and in 84 of 906 receiving its control (rate ratio, 1.19; 95% CI, 0.89 to 1.59; P = 0.23), in 148 of 1399 patients receiving lopinavir and in 146 of 1372 receiving its control (rate ratio, 1.00; 95% CI, 0.79 to 1.25; P = 0.97), and in 243 of 2050 patients receiving interferon and in 216 of 2050 receiving its control (rate ratio, 1.16; 95% CI, 0.96 to 1.39; P = 0.11). No drug definitely reduced mortality, overall or in any subgroup, or reduced initiation of ventilation or hospitalization duration. CONCLUSIONS: These remdesivir, hydroxychloroquine, lopinavir, and interferon regimens had little or no effect on hospitalized patients with Covid-19, as indicated by overall mortality, initiation of ventilation, and duration of hospital stay. (Funded by the World Health Organization; ISRCTN Registry number, ISRCTN83971151; ClinicalTrials.gov number, NCT04315948.).


Assuntos
Monofosfato de Adenosina/análogos & derivados , Alanina/análogos & derivados , Antivirais/uso terapêutico , Tratamento Farmacológico da COVID-19 , Hidroxicloroquina/uso terapêutico , Interferon beta-1a/uso terapêutico , Lopinavir/uso terapêutico , Monofosfato de Adenosina/uso terapêutico , Idoso , Alanina/uso terapêutico , Antivirais/administração & dosagem , Antivirais/efeitos adversos , COVID-19/mortalidade , Quimioterapia Combinada , Feminino , Mortalidade Hospitalar , Hospitalização , Humanos , Análise de Intenção de Tratamento , Estimativa de Kaplan-Meier , Tempo de Internação , Masculino , Pessoa de Meia-Idade , Respiração Artificial , Falha de Tratamento
2.
Bull World Health Organ ; 102(1): 22-31, 2024 Jan 01.
Artigo em Inglês | MEDLINE | ID: mdl-38164340

RESUMO

Objective: We evaluated the uptake of medicines licensed as orphan drugs by the United States Food and Drug Administration (FDA) or European Medicines Agency (EMA) into the WHO Model list of essential medicines and the WHO Model list of essential medicines for children from 1977 to 2021. Methods: We collated and analysed data on drug characteristics, reasons for adding or rejecting medicines, and time between regulatory approval and inclusion in the lists. We compared trends in listing orphan drugs before and after revisions to the inclusion criteria of the essential medicines lists in 2001, as well as differences in trends for listing orphan and non-orphan drugs, respectively. Findings: The proportion of orphan drugs in the essential medicines lists increased from 1.9% (4/208) in 1977 to 14.6% (70/478) in 2021. While orphan drugs for communicable diseases have remained stable over time, we observed a considerable shift towards more orphan drugs for noncommunicable diseases, particularly for cancer. The median period for inclusion in the essential medicines lists after either FDA or EMA first approval was 13.5 years (range: 1-28 years). Limited clinical evidence base and uncertainty about the magnitude of net benefit were the most frequent reasons to reject proposals to add new orphan drugs to the essential medicines lists. Conclusion: Despite lack of a global definition of rare diseases, the essential medicines lists have broadened their scope to include medicines for rare conditions. However, the high costs of many listed orphan drugs pose accessibility and reimbursement challenges in resource-constrained settings.


Assuntos
Medicamentos Essenciais , Produção de Droga sem Interesse Comercial , Criança , Estados Unidos , Humanos , Doenças Raras/tratamento farmacológico , Preparações Farmacêuticas , Organização Mundial da Saúde , Aprovação de Drogas
3.
Bull World Health Organ ; 99(9): 653-660, 2021 Sep 01.
Artigo em Inglês | MEDLINE | ID: mdl-34475602

RESUMO

Poor control of cardiovascular disease accounts for a substantial proportion of the disease burden in developing countries, but often essential anticoagulant medicines for preventing strokes and embolisms are not widely available. In 2019, direct oral anticoagulants were added to the World Health Organization's WHO Model list of essential medicines. The aims of this paper are to summarize the benefits of direct oral anticoagulants for patients with cardiovascular disease and to discuss ways of increasing their usage internationally. Although the cost of direct oral anticoagulants has provoked debate, the affordability of introducing these drugs into clinical practice could be increased by: price negotiation; pooled procurement; competitive tendering; the use of patent pools; and expanded use of generics. In 2017, only 14 of 137 countries that had adopted national essential medicines lists included a direct oral anticoagulant on their lists. This number could increase rapidly if problems with availability and affordability can be tackled. Once the types of patient likely to benefit from direct oral anticoagulants have been clearly defined in clinical practice guidelines, coverage can be more accurately determined and associated costs can be better managed. Government action is required to ensure that direct oral anticoagulants are covered by national budgets because the absence of reimbursement remains an impediment to achieving universal coverage. Tackling cardiovascular disease with the aid of direct oral anticoagulants is an essential component of efforts to achieve the World Health Organization's target of reducing premature deaths due to noncommunicable disease by 25% by 2025.


L'absence de lutte efficace contre les maladies cardiovasculaires contribue grandement à la charge de morbidité pesant sur les pays en développement. Pourtant, les anticoagulants essentiels permettant d'éviter les accidents vasculaires cérébraux et les embolies sont souvent difficiles à obtenir. En 2019, les anticoagulants oraux directs ont été ajoutés à la Liste modèle des médicaments essentiels publiée par l'Organisation mondiale de la Santé. Le présent document vise à résumer les avantages des anticoagulants oraux directs pour les patients souffrant d'une maladie cardiovasculaire, et à évoquer les moyens d'encourager leur utilisation au niveau international. Bien que le coût des anticoagulants oraux directs ait fait débat, intégrer ces médicaments dans la pratique clinique les rendrait plus abordables grâce à diverses méthodes: négociation des prix; achats groupés; appels d'offres concurrentiels; communautés de brevets; et recours accru aux alternatives génériques. En 2017, seulement 14 des 137 pays ayant adopté des listes nationales de médicaments essentiels y avaient inclus des anticoagulants oraux directs. Ce chiffre pourrait augmenter rapidement si les problèmes de disponibilité et d'accessibilité peuvent être résolus. Dès que les profils des patients susceptibles d'être traités par des anticoagulants oraux directs sont clairement établis dans les directives de pratique clinique, la couverture peut être définie avec plus de précision et les dépenses correspondantes, mieux gérées. Les gouvernements doivent s'assurer que ces médicaments sont bien pris en compte dans les budgets nationaux, car l'absence de remboursement demeure un obstacle à la couverture maladie universelle. La lutte contre les maladies cardiovasculaires à l'aide des anticoagulants oraux directs est un élément essentiel des efforts destinés à atteindre l'objectif de l'OMS: faire baisser de 25% d'ici 2025 les décès prématurés dus aux maladies non transmissibles de 25% d'ici 2025.


El mal control de las enfermedades cardiovasculares representa una proporción importante de la carga de enfermedades en los países en desarrollo, y a menudo los medicamentos anticoagulantes esenciales para prevenir los accidentes cerebrovasculares y las embolias no son fácilmente accesibles. En 2019, los anticoagulantes orales directos se añadieron a la lista modelo de medicamentos esenciales de la Organización Mundial de la Salud. Los objetivos del presente artículo son resumir los beneficios de los anticoagulantes orales directos para los pacientes con enfermedades cardiovasculares y discutir las formas de aumentar su uso a nivel internacional. Aunque el coste de los anticoagulantes orales directos ha suscitado debate, la asequibilidad de introducir estos medicamentos en la práctica clínica podría aumentarse al: negociar precios; hacer adquisiciones conjuntas; hacer licitaciones competitivas; utilizar consorcios de patentes; y ampliar el uso de genéricos. En 2017, solo 14 de los 137 países que habían adoptado listas nacionales de medicamentos esenciales incluían un anticoagulante oral directo en sus listas. Este número podría aumentar rápidamente si se pueden abordar los problemas de disponibilidad y asequibilidad. Cuando los tipos de pacientes que pueden beneficiarse de los anticoagulantes orales directos se hayan definido claramente en las directrices de la práctica clínica, la cobertura podrá determinarse con mayor precisión y los costes asociados podrán gestionarse mejor. Es necesario que los gobiernos actúen para garantizar que los anticoagulantes orales directos estén cubiertos por los presupuestos nacionales, ya que la ausencia de reembolso sigue siendo un impedimento para lograr la cobertura universal. La lucha contra las enfermedades cardiovasculares con la ayuda de los anticoagulantes orales directos es un componente esencial de los esfuerzos por alcanzar el objetivo de la OMS de reducir las muertes prematuras debidas a enfermedades no transmisibles en un 25 % para 2025.


Assuntos
Anticoagulantes/economia , Custos de Medicamentos , Medicamentos Essenciais/provisão & distribuição , Medicamentos Genéricos/provisão & distribuição , Acessibilidade aos Serviços de Saúde/estatística & dados numéricos , Anticoagulantes/administração & dosagem , Anticoagulantes/uso terapêutico , Custos e Análise de Custo , Medicamentos Essenciais/economia , Medicamentos Genéricos/economia , Custos de Cuidados de Saúde , Humanos
4.
Bull World Health Organ ; 99(8): 550-561, 2021 Aug 01.
Artigo em Inglês | MEDLINE | ID: mdl-34354310

RESUMO

OBJECTIVE: To compare antibiotic sales in eight high-income countries using the 2019 World Health Organization (WHO) Access, Watch and Reserve (AWaRe) classification and the target of 60% consumption of Access category antibiotics. METHODS: We analysed data from a commercial database of sales of systemic antibiotics in France, Germany, Italy, Japan, Spain, Switzerland, United Kingdom of Great Britain and Northern Ireland, and United States of America over the years 2013-2018. We classified antibiotics according to the 2019 AWaRe categories: Access, Watch, Reserve and Not Recommended. We measured antibiotic sales per capita in standard units (SU) per capita and calculated Access group sales as a percentage of total antibiotic sales. FINDINGS: In 2018, per capita antibiotic sales ranged from 7.4 SU (Switzerland) to 20.0 SU (France); median sales of Access group antibiotics were 10.9 SU per capita (range: 3.5-15.0). Per capita sales declined moderately over 2013-2018. The median percentage of Access group antibiotics was 68% (range: 22-77 %); the Access group proportion increased in most countries between 2013 and 2018. Five countries exceeded the 60% target; two countries narrowly missed it (> 55% in Germany and Italy). Sales of Access antibiotics in Japan were low (22%), driven by relatively high sales of oral cephalosporins and macrolides. CONCLUSION: We have identified changes to prescribing that could allow countries to achieve the WHO target. The 60% Access group target provides a framework to inform national antibiotic policies and could be complemented by absolute measures and more ambitious values in specific settings.


Assuntos
Antibacterianos/economia , Comércio , Monitoramento de Medicamentos/métodos , Antibacterianos/uso terapêutico , Países Desenvolvidos , Europa (Continente) , Humanos , Medicina Estatal , Estados Unidos , Organização Mundial da Saúde
6.
J Pediatr ; 220: 125-131.e5, 2020 05.
Artigo em Inglês | MEDLINE | ID: mdl-32093934

RESUMO

OBJECTIVES: To assess clinical indication-specific antibiotic prescribing in pediatric practice in China based on the World Health Organization (WHO) Access, Watch, and Reserve (AWaRe) metrics and to detect potential problem areas. STUDY DESIGN: Pediatric prescription records on the 16th of each month during 2018 were sampled for all encounters at outpatient and emergency departments of 16 tertiary care hospitals via hospital information systems. Antibiotic prescribing patterns were analyzed across and within diagnostic conditions according to WHO AWaRe metrics and Anatomical Therapeutic Chemical (ATC) classification. RESULTS: A total of 260 001 pediatric encounters were assessed, and antibiotics were prescribed in 94 453 (36.3%). In 35 167 encounters (37.2%), at least 1 intravenous antibiotic was administered. WHO Watch group antibiotics accounted for 82.2% (n = 84 176) of all antibiotic therapies. Azithromycin (n = 15 791; 15.4%) was the most commonly prescribed antibiotic, and third-generation cephalosporins (n = 44 387; 43.3%) were the most commonly prescribed antibiotic class. In at least 66 098 encounters (70.0%), antibiotics were prescribed for respiratory tract conditions, mainly for bronchitis/bronchiolitis (n = 25 815; 27.3%), upper respiratory tract infection (n = 25 184; 26.7%), and pneumonia (n = 13 392; 14.2%). CONCLUSIONS: Overuse and misuse of WHO Watch group antibiotics for respiratory tract conditions and viral infectious diseases is common in pediatric outpatients in China. Pediatric antimicrobial stewardship should be strengthened using WHO AWaRe metrics.


Assuntos
Antibacterianos/uso terapêutico , Prescrições de Medicamentos/estatística & dados numéricos , Uso de Medicamentos/estatística & dados numéricos , Padrões de Prática Médica , Adolescente , Antibacterianos/classificação , Criança , Pré-Escolar , China , Estudos Transversais , Humanos , Lactente , Estudos Prospectivos , Organização Mundial da Saúde
7.
Bull World Health Organ ; 98(3): 177-187C, 2020 Mar 01.
Artigo em Inglês | MEDLINE | ID: mdl-32132752

RESUMO

OBJECTIVE: To assess antibiotic availability and use in health facilities in low- and middle-income countries, using the service provision assessment and service availability and readiness assessment surveys. METHODS: We obtained data on antibiotic availability at 13 561 health facilities in 13 service provision assessment and 8 service availability and readiness assessment surveys. In 10 service provision assessment surveys, child consultations with health-care providers were observed, giving data on antibiotic use in 22 699 children. Antibiotics were classified as access, watch or reserve, according to the World Health Organization's AWaRe categories. The percentage of health-care facilities across countries with specific antibiotics available and the proportion of children receiving antibiotics for key clinical syndromes were estimated. FINDINGS: The surveys assessed the availability of 27 antibiotics (19 access, 7 watch, 1 unclassified). Co-trimoxazole and metronidazole were most widely available, being in stock at 89.5% (interquartile range, IQR: 11.6%) and 87.1% (IQR: 15.9%) of health facilities, respectively. In contrast, 17 other access and watch antibiotics were stocked, by fewer than a median of 50% of facilities. Of the 22 699 children observed, 60.1% (13 638) were prescribed antibiotics (mostly co-trimoxazole or amoxicillin). Children with respiratory conditions were most often prescribed antibiotics (76.1%; 8972/11 796) followed by undifferentiated fever (50.1%; 760/1518), diarrhoea (45.7%; 1293/2832) and malaria (30.3%; 352/1160). CONCLUSION: Routine health facility surveys provided a valuable data source on the availability and use of antibiotics in low- and middle-income countries. Many access antibiotics were unavailable in a majority of most health-care facilities.


Assuntos
Antibacterianos/provisão & distribuição , Infecções Bacterianas/tratamento farmacológico , Instalações de Saúde/estatística & dados numéricos , Serviços de Saúde/estatística & dados numéricos , Antibacterianos/uso terapêutico , Criança , Pré-Escolar , Países em Desenvolvimento , Humanos , Lactente , Organização Mundial da Saúde
8.
Bull World Health Organ ; 97(6): 394-404C, 2019 Jun 01.
Artigo em Inglês | MEDLINE | ID: mdl-31210677

RESUMO

OBJECTIVE: To compare the medicines included in national essential medicines lists with the World Health Organization's (WHO's) Model list of essential medicines, and assess the extent to which countries' characteristics, such as WHO region, size and health care expenditure, account for the differences. METHODS: We searched the WHO's Essential Medicines and Health Products Information Portal for national essential medicines lists. We compared each national list of essential medicines with both the 2017 WHO model list and other national lists. We used linear regression to determine whether differences were dependent on WHO Region, population size, life expectancy, infant mortality, gross domestic product and health-care expenditure. FINDINGS: We identified 137 national lists of essential medicines that collectively included 2068 unique medicines. Each national list contained between 44 and 983 medicines (median 310: interquartile range, IQR: 269 to 422). The number of differences between each country's essential medicines list and WHO's model list ranged from 93 to 815 (median: 296; IQR: 265 to 381). Linear regression showed that only WHO region and health-care expenditure were significantly associated with the number of differences (adjusted R2 : 0.33; P < 0.05). Most medicines (1248; 60%) were listed by no more than 10% (14) of countries. CONCLUSION: The substantial differences between national lists of essential medicines are only partly explained by differences in country characteristics and thus may not be related to different priority needs. This information helps to identify opportunities to improve essential medicines lists.


Assuntos
Países em Desenvolvimento/estatística & dados numéricos , Medicamentos Essenciais , Medicamentos Essenciais/economia , Europa (Continente) , Produto Interno Bruto , Gastos em Saúde , Humanos , Modelos Lineares , Análise de Regressão , Organização Mundial da Saúde
9.
Bull World Health Organ ; 94(10): 735-742, 2016 Oct 01.
Artigo em Inglês | MEDLINE | ID: mdl-27843163

RESUMO

OBJECTIVE: To examine, for essential anti-cancer medicines, the alignment of national lists of essential medicines and national reimbursable medicines lists with the World Health Organization's (WHO's) Model Lists. METHODS: National medicine lists for 135 countries with per-capita gross national incomes below 25 000 United States dollars in 2015 were compared with WHO's 2013 and 2015 Model Lists of Essential Medicines. Correlations between numbers of anti-cancer medicines included in national lists and gross national income (GNI), government health expenditure and number of physicians per 1000 population were evaluated. FINDINGS: Of the 25 anti-cancer medicines on the 2013 Model List and the 16 added via the 2015 revision of the Model List, 0-25 (median: 17) and 0-15 (median: 3) appeared in national lists, respectively. There was considerable variability in these numbers within and between World Bank income groups. Of the 16 new medicines included in the 2015 Model List, for example, 0-10 (median: 1) and 2-15 (median: 10) were included in the national lists of low-income and high-income countries, respectively. The numbers of these new medicines included in national lists were significantly correlated (P ≤ 0.0001) with per-capita GNI (r = 0.45), per-capita annual government health expenditure (r = 0.33) and number of physicians per 1000 population (r = 0.48). Twenty-one countries (16%) included the targeted anti-cancer medicines imatinib, rituximab and trastuzumab in their national lists. CONCLUSION: Substantial numbers of anti-cancer medicines are included in national lists of low- and middle-income countries but the availability, affordability, accessibility and administration feasibility of these medicines, at country-level, need assessment.


Assuntos
Antineoplásicos , Medicamentos Essenciais , Neoplasias/tratamento farmacológico , Bases de Dados Factuais , Organização Mundial da Saúde
10.
Cochrane Database Syst Rev ; 10: CD008536, 2016 Oct 12.
Artigo em Inglês | MEDLINE | ID: mdl-27733017

RESUMO

BACKGROUND: Tibolone is a synthetic steroid used for the treatment of menopausal symptoms, on the basis of short-term data suggesting its efficacy. We considered the balance between the benefits and risks of tibolone. OBJECTIVES: To evaluate the effectiveness and safety of tibolone for treatment of postmenopausal and perimenopausal women. SEARCH METHODS: In October 2015, we searched the Gynaecology and Fertility Group (CGF) Specialised Register, the Cochrane Central Register of Controlled Trials (CENTRAL), MEDLINE, Embase and PsycINFO (from inception), the Cumulative Index to Nursing and Allied Health Literature (CINAHL) and clinicaltrials.gov. We checked the reference lists in articles retrieved. SELECTION CRITERIA: We included randomised controlled trials (RCTs) comparing tibolone versus placebo, oestrogens and/or combined hormone therapy (HT) in postmenopausal and perimenopausal women. DATA COLLECTION AND ANALYSIS: We used standard methodological procedures of The Cochrane Collaboration. Primary outcomes were vasomotor symptoms, unscheduled vaginal bleeding and long-term adverse events. We evaluated safety outcomes and bleeding in studies including women either with or without menopausal symptoms. MAIN RESULTS: We included 46 RCTs (19,976 women). Most RCTs evaluated tibolone for treating menopausal vasomotor symptoms. Some had other objectives, such as assessment of bleeding patterns, endometrial safety, bone health, sexuality and safety in women with a history of breast cancer. Two included women with uterine leiomyoma or lupus erythematosus. Tibolone versus placebo Vasomotor symptomsTibolone was more effective than placebo (standard mean difference (SMD) -0.99, 95% confidence interval (CI) -1.10 to -0.89; seven RCTs; 1657 women; moderate-quality evidence), but removing trials at high risk of attrition bias attenuated this effect (SMD -0.61, 95% CI -0.73 to -0.49; odds ratio (OR) 0.33, 85% CI 0.27 to 0.41). This suggests that if 67% of women taking placebo experience vasomotor symptoms, between 35% and 45% of women taking tibolone will do so. Unscheduled bleedingTibolone was associated with greater likelihood of bleeding (OR 2.79, 95% CI 2.10 to 3.70; nine RCTs; 7814 women; I2 = 43%; moderate-quality evidence). This suggests that if 18% of women taking placebo experience unscheduled bleeding, between 31% and 44% of women taking tibolone will do so. Long-term adverse eventsMost of the studies reporting these outcomes provided follow-up of two to three years (range three months to three years). Breast cancerWe found no evidence of differences between groups among women with no history of breast cancer (OR 0.52, 95% CI 0.21 to 1.25; four RCTs; 5500 women; I2= 17%; very low-quality evidence). Among women with a history of breast cancer, tibolone was associated with increased risk (OR 1.5, 95% CI 1.21 to 1.85; two RCTs; 3165 women; moderate-quality evidence). Cerebrovascular eventsWe found no conclusive evidence of differences between groups in cerebrovascular events (OR 1.74, 95% CI 0.99 to 3.04; four RCTs; 7930 women; I2 = 0%; very low-quality evidence). We obtained most data from a single RCT (n = 4506) of osteoporotic women aged 60 to 85 years, which was stopped prematurely for increased risk of stroke. Other outcomesEvidence on other outcomes was of low or very low quality, with no clear evidence of any differences between the groups. Effect estimates were as follows:• Endometrial cancer: OR 2.04, 95% CI 0.79 to 5.24; nine RCTs; 8504 women; I2 = 0%.• Cardiovascular events: OR 1.38, 95% CI 0.84 to 2.27; four RCTs; 8401 women; I2 = 0%.• Venous thromboembolic events: OR 0.85, 95% CI 0.37 to 1.97; 9176 women; I2 = 0%.• Mortality from any cause: OR 1.06, 95% CI 0.79 to 1.41; four RCTs; 8242 women; I2 = 0%. Tibolone versus combined HT Vasomotor symptomsCombined HT was more effective than tibolone (SMD 0.17, 95% CI 0.06 to 0.28; OR 1.36, 95% CI 1.11 to 1.66; nine studies; 1336 women; moderate-quality evidence). This result was robust to a sensitivity analysis that excluded trials with high risk of attrition bias, suggesting a slightly greater disadvantage of tibolone (SMD 0.25, 95% CI 0.09 to 0.41; OR 1.57, 95% CI 1.18 to 2.10). This suggests that if 7% of women taking combined HT experience vasomotor symptoms, between 8% and 14% of women taking tibolone will do so. Unscheduled bleedingTibolone was associated with a lower rate of bleeding (OR 0.32, 95% CI 0.24 to 0.41; 16 RCTs; 6438 women; I2 = 72%; moderate-quality evidence). This suggests that if 47% of women taking combined HT experience unscheduled bleeding, between 18% and 27% of women taking tibolone will do so. Long-term adverse eventsMost studies reporting these outcomes provided follow-up of two to three years (range three months to three years). Evidence was of very low quality, with no clear evidence of any differences between the groups. Effect estimates were as follows:• Endometrial cancer: OR 1.47, 95% CI 0.23 to 9.33; five RCTs; 3689 women; I2 = 0%.• Breast cancer: OR 1.69, 95% CI 0.78 to 3.67; five RCTs; 4835 women; I2 = 0%.• Venous thromboembolic events: OR 0.44, 95% CI 0.09 to 2.14; four RCTs; 4529 women; I2 = 0%.• Cardiovascular events: OR 0.63, 95% CI 0.24 to 1.66; two RCTs; 3794 women; I2 = 0%.• Cerebrovascular events: OR 0.76, 95% CI 0.16 to 3.66; four RCTs; 4562 women; I2 = 0%.• Mortality from any cause: only one event reported (two RCTs; 970 women). AUTHORS' CONCLUSIONS: Moderate-quality evidence suggests that tibolone is more effective than placebo but less effective than HT in reducing menopausal vasomotor symptoms, and that tibolone is associated with a higher rate of unscheduled bleeding than placebo but with a lower rate than HT.Compared with placebo, tibolone increases recurrent breast cancer rates in women with a history of breast cancer, and may increase stroke rates in women over 60 years of age. No evidence indicates that tibolone increases the risk of other long-term adverse events, or that it differs from HT with respect to long-term safety.Much of the evidence was of low or very low quality. Limitations included high risk of bias and imprecision. Most studies were financed by drug manufacturers or failed to disclose their funding source.


Assuntos
Moduladores de Receptor Estrogênico/uso terapêutico , Terapia de Reposição de Estrogênios/métodos , Fogachos/tratamento farmacológico , Norpregnenos/uso terapêutico , Pós-Menopausa/efeitos dos fármacos , Idoso , Neoplasias da Mama/induzido quimicamente , Neoplasias da Mama/prevenção & controle , Dispareunia/tratamento farmacológico , Moduladores de Receptor Estrogênico/efeitos adversos , Terapia de Reposição de Estrogênios/efeitos adversos , Feminino , Humanos , Pessoa de Meia-Idade , Recidiva Local de Neoplasia/induzido quimicamente , Norpregnenos/efeitos adversos , Ensaios Clínicos Controlados Aleatórios como Assunto , Acidente Vascular Cerebral/induzido quimicamente , Sudorese/efeitos dos fármacos , Hemorragia Uterina/induzido quimicamente
13.
Pediatr Blood Cancer ; 62(10): 1689-93, 2015 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-25929524

RESUMO

Pressures to include more cancer medicines in the WHO Model List of Essential Medicines (EML) pose challenges for the Expert Committee responsible for recommending changes to the list. How do medicines for cancer fit within a definition of essential medicines as those meeting the priority health needs of the population? Will identifying a medicine as "essential" offer some leverage to improve access to effective cancer medicines in low and middle-income countries (LMICs)? The addition of a number of medicines for the treatment of cancers in children to the Model List of Essential Medicines for Children (EMLc) in 2011 provides important insights into previous Expert Committee decision-making and offers a platform for future deliberations. As combination chemotherapy is required for effective treatment of many malignancies, a disease-based approach makes more sense than an agent-based approach. Inadequate financing to purchase essential medicines is a reality in many LMICs, thus a consideration of health impact is central to decisions on the selection and procurement of medicines. Inclusion in national EMLs should identify medicines that have priority for procurement in the public sector. This article will discuss some of the factors taken into account by the Expert Committee in developing the WHO EMLc. We argue that the disease-based approach coupled with the assessment of the magnitude of the clinical benefit provides an appropriate approach for considering further additions of medicines for pediatric cancers and for the review of the adult cancer section of the Model List.


Assuntos
Antineoplásicos , Neoplasias/tratamento farmacológico , Guias de Prática Clínica como Assunto , Organização Mundial da Saúde , Criança , Medicamentos Essenciais , Prioridades em Saúde , Humanos , Pediatria
14.
BMC Infect Dis ; 15: 432, 2015 Oct 16.
Artigo em Inglês | MEDLINE | ID: mdl-26471197

RESUMO

BACKGROUND: In the current Ebola epidemic in Western Africa, many healthcare workers have become infected. Some of these have been medically evacuated to hospitals in Europe and the USA. These clinical experiences provide unique insights into the course of Ebola virus disease under optimized condition within high level isolation units. CASE PRESENTATION: A 50-year-old Caucasian male physician contracted Ebola virus diseases in Sierra Leone and was medically evacuated to Italy. Few days after the admission the course of the illness was characterized by severe gastro-intestinal symptoms followed by respiratory failure, accompanied by pulmonary infiltration and high Ebola viral load in the bronchial aspirate and Plasmodium vivax co-infection. The patient received experimental antiviral therapy with favipiravir, convalescent plasma and ZMAb. Ebola viral load started to steadily decrease in the blood after ZMAb administration and became undetectable by day 19 after admission, while it persisted longer in urine samples. No temporal association was observed between viral load decay in plasma and administration of favipiravir. The patient completely recovered and was discharged 39 days after admission. CONCLUSIONS: This is the first case of Ebola-related interstitial pneumonia documented by molecular testing of lung fluid specimens. This reports underlines the pivotal role of fluid replacement and advanced life support with mechanical ventilation in the management of patients with Ebola virus diseases respiratory failure. Beside our finding indicates a close temporal association between administration of cZMAb and Ebola virus clearance from blood.


Assuntos
Doença pelo Vírus Ebola/diagnóstico , Doenças Pulmonares Intersticiais/diagnóstico , Amidas/uso terapêutico , Anticorpos Monoclonais/uso terapêutico , Antivirais/uso terapêutico , Coinfecção , Ebolavirus/genética , Ebolavirus/isolamento & purificação , Ebolavirus/fisiologia , Doença pelo Vírus Ebola/complicações , Doença pelo Vírus Ebola/tratamento farmacológico , Humanos , Doenças Pulmonares Intersticiais/complicações , Doenças Pulmonares Intersticiais/virologia , Malária Vivax/complicações , Malária Vivax/diagnóstico , Masculino , Pessoa de Meia-Idade , Plasmodium vivax/isolamento & purificação , Pirazinas/uso terapêutico , RNA Viral/sangue , RNA Viral/urina , Respiração Artificial , Insuficiência Respiratória/etiologia , Carga Viral
15.
Cochrane Database Syst Rev ; (10): CD006171, 2015 Oct 23.
Artigo em Inglês | MEDLINE | ID: mdl-26493047

RESUMO

BACKGROUND: Congenital toxoplasmosis is considered a rare but potentially severe infection. Prenatal education about congenital toxoplasmosis could be the most efficient and least harmful intervention, yet its effectiveness is uncertain. OBJECTIVES: To assess the effects of prenatal education for preventing congenital toxoplasmosis. SEARCH METHODS: We searched the Cochrane Pregnancy and Childbirth Group's Trials Register (31 May 2015), and reference lists of relevant papers, reviews and websites. SELECTION CRITERIA: Randomized and quasi-randomized controlled trials of all types of prenatal education on toxoplasmosis infection during pregnancy. Cluster-randomized trials were eligible for inclusion. DATA COLLECTION AND ANALYSIS: Two review authors independently assessed trials for inclusion and risk of bias, extracted data and checked them for accuracy. MAIN RESULTS: Two cluster-randomized controlled trials (RCTs) (involving a total of 5455 women) met the inclusion criteria. The two included trials measured the effectiveness of the intervention in different ways, which meant that meta-analysis of the results was not possible. The overall quality of the two studies, as assessed using the GRADE approach, was low, with high risk of detection and attrition bias in both included trials.One trial (432 women enrolled) conducted in Canada was judged of low methodological quality. This trial did not report on any of the review's pre-specified primary outcomes and the secondary outcomes reported results only as P values. Moreover, losses to follow-up were high (34%, 147 out of 432 women initially enrolled). The authors concluded that prenatal education can effectively change pregnant women's behavior as it increased pet, personal and food hygiene. The second trial conducted in France was also judged of low methodological quality. Losses to follow-up were also high (44.5%, 2233 out of 5023 women initially enrolled) and differential (40% in the intervention group and 52% in the control group). The authors concluded that prenatal education for congenital toxoplasmoses has a significant effect on improving women's knowledge, whereas it has no effect on changing women's behavior. In this trial 17/3949 pregnant women seroconverted for toxoplasmosis: 13/2591 (0.5%) in the intervention group and 4/1358 (0.3%) in the control group. The rate of seroconversion detected during the study did not differ between groups (risk ratio (RR) 1.70, 95% confidence interval (CI) 0.56 to 5.21; participants = 3949; studies = one, low quality evidence). The number of events was too small to reach conclusions about the effect of prenatal education on seroconversion rate during pregnancy.No other randomized trials on the effect of prenatal education on congenital toxoplasmosis rate, or toxoplasmosis seroconversion rate during pregnancy were detected. AUTHORS' CONCLUSIONS: Even though primary prevention of congenital toxoplasmosis is considered a desirable intervention, given the lack of related risks compared to secondary and tertiary prevention, its effectiveness has not been adequately evaluated. There is very little evidence from RCTs that prenatal education is effective in reducing congenital toxoplasmosis even though evidence from observational studies suggests it is. Given the lack of good evidence supporting prenatal education for congenital toxoplasmosis prevention, further RCTs are needed to confirm any potential benefits and to further quantify the impact of different sets of educational intervention.


Assuntos
Higiene/educação , Complicações Parasitárias na Gravidez/prevenção & controle , Cuidado Pré-Natal/métodos , Doenças Raras/prevenção & controle , Toxoplasmose Congênita/prevenção & controle , Feminino , Humanos , Gravidez , Ensaios Clínicos Controlados Aleatórios como Assunto , Doenças Raras/parasitologia
16.
PLoS Med ; 11(12): e1001769, 2014 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-25514024

RESUMO

Wietse Tol and colleagues discuss some of the key challenges for implementation of new WHO guidelines for stress-related mental health disorders in low- and middle-income countries. Please see later in the article for the Editors' Summary.


Assuntos
Luto , Saúde Mental/normas , Transtornos de Estresse Pós-Traumáticos , Estresse Psicológico , Gerenciamento Clínico , Humanos , Organização Mundial da Saúde
19.
Recenti Prog Med ; 105(2): 51-5, 2014 Feb.
Artigo em Italiano | MEDLINE | ID: mdl-24625908

RESUMO

In May 2013 the American Psychiatric Association approved the 5th revised edition of the Diagnostic and Statistical Manual of Mental Disorders (DSM), that since 1958 has been a reference document for the classification of psychiatric conditions. Even before its publication the DSM-5 has raised a controversy widely covered by media, the strongest argument of its critics being the fact that DSM-5 favors the medicalization of conditions that belong to ordinary human experiences. Using DSM-5 as a diagnostic tool in clinical practice may favor over-diagnosis and over-treatment, for example by labeling many healthy people experiencing forgetfulness as affected by "cognitive impairment", while grieving after the death of a loved one may be diagnosed as a "major depressive disorder". Moreover, the scientific integrity of the committee that produced the DSM-5 has been questioned, arguing that the tendency to expand the boundaries of mental illness may have been driven by financial and intellectual conflicts of interest and by ties with drug companies of some of its members.


Assuntos
Transtornos Cognitivos/diagnóstico , Manual Diagnóstico e Estatístico de Transtornos Mentais , Transtornos Mentais/diagnóstico , Transtornos Cognitivos/classificação , Erros de Diagnóstico , Humanos , Transtornos Mentais/classificação
20.
Recenti Prog Med ; 105(9): 333-40, 2014 Sep.
Artigo em Italiano | MEDLINE | ID: mdl-25229762

RESUMO

Novel direct oral anticoagulants (NAO) represent an innovative and potentially relevant option for the prevention of cardiac embolism in patients with atrial fibrillation. Their recent introduction has been followed by a wide debate on their appropriate use, considering that they do not require regular monitoring of INR values as Vitamin K Antagonists (VKA) do, but that are much less tested in everyday clinical practice and much more expensive than VKA. Starting from the quite favourable results of the available RCTs - showing that NAO are at least non-inferior to VKA and that may be even better for some outcomes - this article discusses the clinical relevance of these results, their transferability into clinical practice looking at the methods of those RCTs and potential risks related to their widespread introduction. Final considerations on possible strategies for their appropriate and progressive introduction are also provided, using the experience developing in the Emilia-Romagna region.


Assuntos
Anticoagulantes/uso terapêutico , Fibrilação Atrial/tratamento farmacológico , Embolia/prevenção & controle , Administração Oral , Anticoagulantes/administração & dosagem , Anticoagulantes/efeitos adversos , Fibrilação Atrial/complicações , Monitoramento de Medicamentos/métodos , Embolia/etiologia , Humanos , Coeficiente Internacional Normatizado , Ensaios Clínicos Controlados Aleatórios como Assunto
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