RESUMO
Rosacea is a chronic inflammatory dermatosis mainly affecting the cheeks, nose, chin, and forehead. Rosacea is characterized by recurrent episodes of flushing or transient erythema, persistent erythema, phymatous changes, papules, pustules, and telangiectasia. The eyes may also be involved. Due to rosacea affecting the face, it has a profound negative impact on quality of life, self-esteem, and well-being. In addition to general skin care, there are several approved treatment options available for addressing these features, both topical and systemic. For some features, intense pulse light, laser, and surgery are of value. Recent advances in fundamental scientific research have underscored the roles of the innate and adaptive immune systems as well as neurovascular dysregulation underlying the spectrum of clinical features of rosacea. Endogenous and exogenous stimuli may initiate and aggravate several pathways in patients with rosacea. This review covers the new phenotype-based diagnosis and classification system reflecting pathophysiology, and new and emerging treatment options and approaches. We address new topical and systemic formulations, as well as recent evidence on treatment combinations. In addition, ongoing studies investigating novel therapeutic interventions will be summarized.
Assuntos
Fármacos Dermatológicos/uso terapêutico , Dermatoses Faciais/terapia , Rosácea/terapia , Higiene da Pele/métodos , Administração Cutânea , Administração Oral , Terapia Combinada/métodos , Terapia Combinada/tendências , Dermatoses Faciais/diagnóstico , Dermatoses Faciais/imunologia , Humanos , Rosácea/diagnóstico , Rosácea/imunologia , Higiene da Pele/tendênciasRESUMO
AIMS: Breast cancer within the region continues to present challenges to the healthcare services. Strategies to shed light on clinical gaps could better support country-specific circumstances. The aims of the mapping study were to identify the gaps in the evidence base, for the management of breast cancer with relevance to Bahrain and the Gulf Region. In parallel, focusing on areas and directions of research, which are compatible with international and local clinical interests. It was envisaged that the mapping project would expose not only opportunities to improve support to the community but also illustrate the possible engagement of a government entity and a Nongovernment Organization in a private-public partnership. METHOD: An extensive literature review of local and international publications from the period between 1979 and 2015 was undertaken. Searches were conducted using free-text terms, singularly or combined, with no limiters, to provide unrestricted retrieval of available English studies. RESULTS: A total of 326 citations were identified, which after deduplication provided 277 unique citations of which included 236 studies within 13 different categories, relevant to breast cancer within the Gulf Cooperation Council (GCC). CONCLUSION: Contextualizing gaps in literature and, therefore, providing evidence-based decisions, not only support the enduser, but better support the country-specific challenges and burdens to healthcare. Three broad but key areas were identified after mapping of the literature, covering:screening and mammography, knowledge translation and dissemination, and lymphoedema postsurgical resection. Similar mapping projects could be undertaken by other national NGO's to better support the government and solidify the framework for a public-private partnership.
Assuntos
Neoplasias da Mama/epidemiologia , Neoplasias da Mama/terapia , Mamografia/métodos , Guias de Prática Clínica como Assunto , Barein/epidemiologia , Biópsia por Agulha , Neoplasias da Mama/diagnóstico por imagem , Neoplasias da Mama/patologia , Quimioterapia Adjuvante/métodos , Países em Desenvolvimento , Medicina Baseada em Evidências , Feminino , Humanos , Imuno-Histoquímica , Mastectomia/métodos , Invasividade Neoplásica/patologia , Estadiamento de Neoplasias , Prognóstico , Radioterapia Adjuvante , Análise de SobrevidaRESUMO
Abstract Antibiotic resistance is a growing public health concern. Antibiotics continue to be prescribed by some clinicians to resolve dental pain even though research indicates that antibiotics are not effective for treating conditions such as irreversible pulpitis. The objective of this study was to determine the extent to which current research and evidence around irreversible pulpitis has been translated into dental practice and the gaps in dentists' knowledge. An on-line clinical vignette format survey questionnaire about treatment of irreversible pulpitis was distributed to the members of the Academy of Operative Dentistry and Academy of General Dentistry (US based international dental bodies). Their responses were recorded and evaluated. A total of 403 dentists participated in the survey. Over a third (39.3%) indicated they would prescribe antibiotics for symptomatic irreversible pulpitis in a permanent tooth occurring without any signs of systemic infection. The rest indicated they would not prescribe antibiotics; most of them would prescribe an analgesic combined with pulpectomy. Those who had undertaken advanced education training achieved a significantly higher mean knowledge score compared to those with just a primary dental degree (p=0.011). Similarly, full or part time academicians had a higher mean knowledge score than the clinicians who work only in private practice (p=0.014). Some dentists continue to prescribe antibiotics inappropriately for alleviating pain due to irreversible pulpitis. Antibiotic prescribing practices of dentists with advanced education or academic engagement were better as compared to the other participants. There is clear evidence of antibiotic over-prescribing for irreversible pulpitis which needs to be addressed urgently.
Resumo A resistência aos antibióticos é uma preocupação crescente para a saúde pública. Os antibióticos continuam a ser prescritos por alguns dentistas para resolver a dor dentária, embora pesquisas indiquem que os antibióticos não são eficazes no tratamento de condições como a pulpite irreversível. O objetivo deste estudo foi determinar em que medida as pesquisas atuais e as evidências em torno da pulpite irreversível foram traduzidas em prática odontológica e as lacunas existentes no conhecimento dos dentistas. Um questionário de pesquisa em formato de vinheta clínica on-line sobre o tratamento da pulpite irreversível foi distribuído para os membros da Academia de Odontologia Operatória e da Academia de Odontologia Geral (órgãos dentários internacionais dos EUA). Suas respostas foram registradas e avaliadas. Um total de 403 dentistas participou da pesquisa. Mais de um terço (39,3%) indicaram que prescreveriam antibióticos para pulpite irreversível sintomática em um dente permanente sem qualquer sinal de infecção sistêmica. O restante respondeu que eles não prescreveriam antibióticos; a maioria deles prescreveria um analgésico combinado com pulpectomia. Aqueles que realizaram o treinamento de educação avançada obtiveram uma pontuação de conhecimento médio significativamente maior em comparação com aqueles com apenas um grau primário de conhecimento odontológico (p=0,011). Da mesma forma, acadêmicos em tempo integral ou parcial tiveram uma pontuação média de conhecimento maior do que os clínicos que trabalham apenas em consultório particular (p=0,014). Alguns dentistas continuam a prescrever antibióticos inadequadamente para aliviar a dor decorrente de pulpite irreversível. Práticas de prescrição de antibióticos por dentistas com educação avançada ou envolvimento acadêmico foram melhores em comparação com os outros participantes. Há evidências claras de excesso de prescrição de antibiótico para pulpite irreversível que precisa ser tratada com urgência.
Assuntos
Humanos , Pulpite , Antibacterianos , Odontalgia , Odontólogos , Odontologia GeralRESUMO
Abstract Antibiotics do not cure toothache. This headline message of the United Kingdom's (UK) Dental Antimicrobial Stewardship (AMS) toolkit's posters and leaflets is aimed at patients; clinicians are expected to know this already. Evidence based clinical guidelines exist to set clear standards for good clinical practice yet there are barriers to compliance. The national AMS audit tool is designed for clinicians to review their management of acute dental conditions, including but not limited to the prescription of antibiotics. In this article we aim to help dental teams protect their patients and themselves from adverse events related to antibiotic prescription. It explores the emergent problem of Clostridium difficile, antibiotic resistance and severe sepsis, and considers some of the barriers, which clinicians have suggested, contribute to the unjustified prescription of antibiotics. Dentists must weigh the risks against the benefits before prescribing any antibiotic.
Resumo Antibióticos não curam dor de dente. Tal mensagem, encontrada no título dos panfletos e cartazes da caixa de ferramentas Gerenciamento Antimicrobiano Odontológico (AMS) do Reino Unido, é direcionada aos pacientes; os clínicos já deveriam saber disso. Diretrizes clínicas baseadas em evidência existem para estabelecer padrões claros à boa prática clínica, ainda que existam barreiras para sua observância. A ferramenta AMS para monitoramento nacional é voltada para clínicos revisarem sua conduta frente às condições dentais agudas, inclusive mas não limitada à prescrição de antibióticos. Neste artigo, visa-se colaborar com equipes odontológicas a fim de protegerem a si e a seus pacientes contra situações adversas relacionadas ao uso de antibióticos. Explora-se o problema emergente do Clostridium difficile, resistência bacteriana a antimicrobianos e sepsis severa, além de considerar algumas das barreiras que clínicos têm sugerido como geradoras de prescrições inapropriadas de antibióticos. Os dentistas devem pesar riscos e benefícios antes de prescrever qualquer antibiótico.
Assuntos
Humanos , Prescrições de Medicamentos , Odontalgia/tratamento farmacológico , Padrões de Prática Odontológica , Antibacterianos/uso terapêutico , Revisão de Uso de Medicamentos , Reino UnidoRESUMO
BACKGROUND: Recognition of some of the limitations of titanium plates and screws used for the fixation of bones has led to the development of plates manufactured from bioresorbable materials. Whilst resorbable plates appear to offer clinical advantages over metal plates in orthognathic surgery, concerns remain about the stability of fixation and the length of time required for their degradation and the possibility of foreign body reactions. This review compares the use of titanium versus bioresorbable plates in orthognathic surgery and is an update of the Cochrane Review first published in 2007. OBJECTIVES: To compare the effects of bioresorbable fixation systems with titanium systems used during orthognathic surgery. SEARCH METHODS: Cochrane Oral Health's Information Specialist searched the following databases: Cochrane Oral Health's Trials Register (to 20 January 2017); the Cochrane Central Register of Controlled Trials (CENTRAL; 2016, Issue 11) in the Cochrane Library (searched 20 January 2017); MEDLINE Ovid (1946 to 20 January 2017); and Embase Ovid (1980 to 20 January 2017). We searched the US National Institutes of Health Ongoing Trials Register ClinicalTrials.gov (clinicaltrials.gov; searched 20 January 2017), and the World Health Organization International Clinical Trials Registry Platform (searched 20 January 2017) for ongoing trials. No restrictions were placed on the language or date of publication when searching the electronic databases. SELECTION CRITERIA: Randomised controlled trials comparing bioresorbable versus titanium fixation systems used for orthognathic surgery in adults. DATA COLLECTION AND ANALYSIS: Two review authors independently screened the results of the electronic searches, extracted data and assessed the risk of bias of the included studies. We resolved disagreement by discussion. Clinical heterogeneity between the included trials precluded pooling of data, and only a descriptive summary is presented. MAIN RESULTS: This review included two trials, involving 103 participants, one comparing titanium with resorbable plates and screws and the other titanium with resorbable screws. Both studies were at high risk of bias and provided very limited data for the primary outcomes of this review. All participants in one trial suffered mild to moderate postoperative discomfort with no statistically significant difference between the two plating groups at different follow-up times. Mean scores of patient satisfaction were 7.43 to 8.63 (range 0 to 10) with no statistically significant difference between the two groups throughout follow-up. Adverse effects reported in one study were two plate exposures in each group occurring between the third and ninth months. Plate exposures occurred mainly in the posterior maxillary region, except for one titanium plate exposure in the mandibular premolar region. Known causes of infection were associated with loosened screws and wound dehiscence with no statistically significant difference in the infection rate between titanium (3/196), and resorbable (3/165) plates. AUTHORS' CONCLUSIONS: We do not have sufficient evidence to determine if titanium plates or resorbable plates are superior for fixation of bones after orthognathic surgery. This review provides insufficient evidence to show any difference in postoperative pain and discomfort, level of patient satisfaction, plate exposure or infection for plate and screw fixation using either titanium or resorbable materials.
Assuntos
Implantes Absorvíveis , Placas Ósseas , Fixadores Internos , Mandíbula/cirurgia , Maxila/cirurgia , Titânio , Parafusos Ósseos , Remoção de Dispositivo , Humanos , Osteotomia/métodos , Ensaios Clínicos Controlados Aleatórios como AssuntoRESUMO
BACKGROUND: Thalassemia is an inherited autosomal recessive blood disorder, caused by mutations in globin genes or their regulatory regions. This results in a reduced rate of synthesis of one of the globin chains that make up haemoglobin. In ß-thalassaemia major there is an underproduction of ß-globin chains combined with excess of free α-globin chains. The excess free α-globin chains precipitate in red blood cells, leading to their destruction (haemolysis) and ineffective erythropoiesis. The conventional approach to treatment is based on the correction of haemoglobin status through regular blood transfusions and iron chelation therapy for iron overload. Although conventional treatment has the capacity to improve the quality of life of people with ß-thalassaemia major, allogeneic hematopoietic stem cell transplantation is the only currently available procedure which has the curative potential. This is an update of a previously published Cochrane Review. OBJECTIVES: To evaluate the effectiveness and safety of different types of allogeneic hematopoietic stem cell transplantation, in people with severe transfusion-dependant ß-thalassaemia major, ß-thalassaemia intermedia or ß0/+- thalassaemia variants requiring chronic blood transfusion. SEARCH METHODS: We searched the Cochrane Cystic Fibrosis and Genetic Disorders Group Haemoglobinopathies Trials Register comprising references identified from comprehensive electronic database searches and handsearches of relevant journals and abstract books of conference proceedings.Date of the most recent search: 18 August 2016. SELECTION CRITERIA: Randomised controlled trials and quasi-randomised controlled trials comparing allogeneic hematopoietic stem cell transplantation with each other or with standard therapy (regular transfusion and chelation regimen). DATA COLLECTION AND ANALYSIS: Two review authors independently screened studies and had planned to extract data and assess risk of bias using standard Cochrane methodologies but no studies were identified for inclusion. MAIN RESULTS: No relevant studies were retrieved after a comprehensive search of the literature. AUTHORS' CONCLUSIONS: We were unable to identify any randomised controlled trials or quasi-randomised controlled trials on the effectiveness and safety of different types of allogeneic stem cell transplantation in people with severe transfusion-dependant ß-thalassaemia major or ß0/+- thalassaemia variants requiring chronic blood transfusion. The absence of high-level evidence for the effectiveness of these interventions emphasises the need for well-designed, adequately-powered, randomised controlled clinical trials.
Assuntos
Transplante de Células-Tronco Hematopoéticas , Talassemia beta/terapia , HumanosRESUMO
Rosacea is a chronic disease with a profound impact on quality of life. Although there are a range of treatments for its many manifestations, some cases are difficult to treat. Sbidian et al. show in this double-blind, randomized, placebo-controlled trial that low-dose isotretinoin can be effective in treating difficult-to-treat and frequently relapsing papulopustular rosacea.
Assuntos
Isotretinoína/uso terapêutico , Ceratolíticos/uso terapêutico , Rosácea/diagnóstico , Rosácea/tratamento farmacológico , Ensaios Clínicos Fase II como Assunto , Estudos de Coortes , Relação Dose-Resposta a Droga , Método Duplo-Cego , Esquema de Medicação , Feminino , Humanos , Masculino , Prognóstico , Ensaios Clínicos Controlados Aleatórios como Assunto , Reprodutibilidade dos Testes , Medição de Risco , Índice de Gravidade de Doença , Resultado do TratamentoRESUMO
Guideline development is challenging, expensive and labor-intensive. A high-quality guideline with 90 recommendations for breast cancer treatment was developed within 6 months with limited resources in Costa Rica. We describe the experience and propose a process others can use and adapt.The ADAPTE method (using existing guidelines to minimize repeating work that has been done) was used but existing guidelines were not current. The method was extended to use databases that systematically identify, appraise and synthesize evidence for clinical application (DynaMed, EBM Guidelines) to provide current evidence searches and critical appraisal of evidence. The Grading of Recommendations Assessment, Development and Evaluation (GRADE) approach was used to rate the quality of evidence and the strength of recommendations. Draft recommendations with supporting evidence were provided to panel members for facilitated voting to target panel discussion to areas necessary for reaching consensus.Training panelists in guideline development methodology facilitated rapid consensus development. Extending 'guideline adaptation' to 'evidence database adaptation' was highly effective and efficient. Methods were created to simplify mapping DynaMed evidence ratings to GRADE ratings. Twelve steps are presented to facilitate rapid guideline development and enable further adaptation by others.This is a case report and the RAPADAPTE method was retrospectively derived. Prospective replication and validation will support advances for the guideline development community. If guideline development can be accelerated without compromising validity and relevance of the resulting recommendations this would greatly improve our ability to impact clinical care.
Assuntos
Medicina Baseada em Evidências/organização & administração , Guias de Prática Clínica como Assunto , Qualidade da Assistência à Saúde/organização & administração , Neoplasias da Mama/terapia , Consenso , Bases de Dados Factuais , Humanos , Relações Interprofissionais , Estudos de Casos Organizacionais , Qualidade da Assistência à Saúde/normasRESUMO
BACKGROUND: Sickle cell disease is one of the most common genetic disorders. Sickle cell crises in which irregular and dehydrated cells contribute to blocking of blood vessels are characterised by episodes of pain. Treatment is mainly supportive and symptomatic. In vitro studies with piracetam indicate that it has the potential for inhibition and a reversal of the process of sickling of erythrocytes. This is an update of a previously published Cochrane review. OBJECTIVES: To assess the effectiveness of piracetam for reducing the incidence of painful sickle cell disease crises. SEARCH METHODS: We searched the Cochrane Cystic Fibrosis and Genetic Disorders Group Haemoglobinopathies Trials Register which comprises of references identified from comprehensive electronic database searches and handsearches of relevant journals and abstract books of conference proceedings.Last search of the Group's Haemoglobinopathies Trials Register: 21 September 2015. SELECTION CRITERIA: Randomised controlled trials comparing orally administered piracetam to placebo or standard care in people, of all ages and both sexes, with sickle cell disease. DATA COLLECTION AND ANALYSIS: Two authors independently assessed trial quality and extracted data. Trial authors were contacted for additional information. Adverse effects data were collected from the trials. MAIN RESULTS: Three trials involving 169 participants were included in the review. A limited amount of data addressing some of the primary and some of the secondary outcomes were provided, but data were incomplete and based on un-validated assumptions used in the evaluation of outcomes. One trial reported a reduction in the number of pain crises and their severity with active intervention than placebo but presented no data to confirm these results. A second trial presented a monthly global pain score based on the number of sickle cell crises and severity of pain but included no separate data for these primary outcomes. Although there was no significant difference between the piracetam and placebo periods for the number of days of hospitalisation (P = 0.87) in one trial, inconsistencies in the criteria necessary for hospitalisation during sickle crises did not permit accurate conclusions to be drawn. Two of the trials reported participant satisfaction with piracetam but provided no details as to how this satisfaction had been assessed. There were no reports of toxicity or adverse effects with piracetam other than one participant who experienced dizziness. AUTHORS' CONCLUSIONS: The small number of included trials and their poor methodological quality provided insufficient reliable evidence to support the routine use of this medication for preventing the incidence of painful sickle cell disease crises.We will continue to run searches to identify any potentially relevant trials; however, we do not plan to update other sections of the review until new trials are published.
Assuntos
Anemia Falciforme/tratamento farmacológico , Antidrepanocíticos/uso terapêutico , Dor/tratamento farmacológico , Piracetam/uso terapêutico , Adolescente , Anemia Falciforme/complicações , Criança , Pré-Escolar , Humanos , Ensaios Clínicos Controlados Aleatórios como AssuntoRESUMO
BACKGROUND: Cystic fibrosis is the most common, life-threatening, recessively inherited disease of Caucasian populations. It is a multisystem disorder caused by a mutation in the gene encoding the cystic fibrosis transmembrane conductance regulator protein which is important in producing sweat, digestive juices and mucus.The impaired or absent function of this protein results in the production of viscous mucus within the lungs and an environment that is susceptible to chronic airway obstruction and pulmonary colonization by a range of pathogenic bacteria. Morbidity and mortality of cystic fibrosis is related to chronic pulmonary sepsis and its complications by these bacteria.Influenza can worsen the course of the disease in cystic fibrosis by increasing the risk of pneumonia and secondary respiratory complications. Antiviral agents form an important part of influenza management and include the neuraminidase inhibitors zanamivir and oseltamivir. These inhibitors can limit the infection and prevent the spread of the virus. OBJECTIVES: To assess the effects of neuraminidase inhibitors for the treatment of influenza infection in people with cystic fibrosis. SEARCH METHODS: We searched the Cochrane Cystic Fibrosis and Genetic Disorders Group Trials Register comprising references identified from comprehensive electronic database searches and handsearches of relevant journals and abstract books of conference proceedings.Most recent search: 02 November 2015. SELECTION CRITERIA: Randomised controlled trials and quasi-randomised controlled trials comparing neuraminidase inhibitors with placebo or other antiviral drugs. DATA COLLECTION AND ANALYSIS: Two review authors had planned to independently screen studies, extract data and assess risk of bias using standard Cochrane methodologies. No studies were identified for inclusion. MAIN RESULTS: No relevant studies were retrieved after a comprehensive search of the literature. AUTHORS' CONCLUSIONS: We were unable to identify any randomised controlled studies or quasi-randomised controlled studies on the efficacy of neuraminidase inhibitors for the treatment of influenza infection in people with cystic fibrosis. The absence of high level evidence for the effectiveness of these interventions emphasises the need for well-designed, adequately powered, randomised controlled clinical studies.
Assuntos
Fibrose Cística/complicações , Inibidores Enzimáticos/uso terapêutico , Influenza Humana/tratamento farmacológico , Neuraminidase/antagonistas & inibidores , HumanosRESUMO
CLINICAL QUESTION: Which interventions are associated with highest efficacy and fewest adverse events for treating rosacea? BOTTOM LINE: There is high-quality evidence that topical brimonidine, azelaic acid, and ivermectin, as well as oral doxycycline and isotretinoin, are associated with improvements in rosacea. Lower-quality evidence is available for topical metronidazole, oral tetracycline, laser and light-based therapy, and topical cyclosporine for ocular rosacea. Most treatments are not associated with higher adverse event rates than placebo.
Assuntos
Fármacos Dermatológicos/uso terapêutico , Rosácea/tratamento farmacológico , Feminino , Humanos , MasculinoRESUMO
BACKGROUND: Sickle cell disease is one of the most common and severe genetic disorders in the world. It can be broadly divided into two distinct clinical phenotypes characterized by either haemolysis or vaso-occlusion. Pain is the most prominent symptom of vaso-occlusion, and hypercoagulability is a well-established pathogenic phenomenon in people with sickle cell disease. Low-molecular-weight heparins might control this hypercoagulable state through their anticoagulant effect. This is an update of a previously published version of this review. OBJECTIVES: To assess the effects of low-molecular-weight heparins for managing vaso-occlusive crises in people with sickle cell disease. SEARCH METHODS: We searched the Cochrane Cystic Fibrosis and Genetic Disorders Group Haemoglobinopathies Trials Register comprising references identified from comprehensive electronic database searches. We also searched abstract books of conference proceedings and several online trials registries for ongoing trials.Date of the last search of the Cochrane Cystic Fibrosis and Genetic Disorders Group Haemoglobinopathies Trials Register: 28 September 2015. SELECTION CRITERIA: Randomised controlled clinical trials and controlled clinical trials that assessed the effects of low-molecular-weight heparins in the management of vaso-occlusive crises in people with sickle cell disease. DATA COLLECTION AND ANALYSIS: Study selection, data extraction, assessment of risk of bias and analyses were carried out independently by the two review authors. MAIN RESULTS: Two studies comprising 287 participants were included. One study (with an overall unclear to high risk of bias) involved 253 participants and the quality of the evidence for most outcomes was very low. This study, reported that pain severity at day two and day three was lower in the tinzaparin group than in the placebo group (P < 0.01, analysis of variance (ANOVA)) and additionally at day 4 (P < 0.05 (ANOVA)). Thus tinzaparin resulted in more rapid resolution of pain, as measured with a numerical pain scale. The mean difference in duration of painful crises was statistically significant at -1.78 days in favour of the tinzaparin group (95% confidence interval -1.94 to -1.62). Participants treated with tinzaparin had statistically significantly fewer hospitalisation days than participants in the group treated with placebo, with a mean difference of -4.98 days (95% confidence interval -5.48 to -4.48). Two minor bleeding events were reported as adverse events in the tinzaparin group, and none were reported in the placebo group. The second study (unclear risk of bias) including 34 participants and was a conference abstract with limited data and only addressed one of the predefined outcomes of the review; i.e. pain intensity. After one day pain intensity reduced more, as reported on a visual analogue scale, in the dalteparin group than in the placebo group, mean difference -1.30 (95% confidence interval -1.60 to -1.00), with the quality of evidence rated very low. The most important reasons for downgrading the quality of evidence were serious risk of bias and imprecision (due to low sample size or low occurrence of events). AUTHORS' CONCLUSIONS: Based on the results of two studies, evidence is incomplete to support or refute the effectiveness of low-molecular-weight heparins in people with sickle cell disease. Vaso-occlusive crises are extremely debilitating for sufferers of sickle cell disease; therefore well-designed placebo-controlled studies with other types of low-molecular-weight heparins, and in participants with different genotypes of sickle cell disease, still need to be carried out to confirm or dismiss the results of this single study.
Assuntos
Anemia Falciforme/complicações , Anticoagulantes/uso terapêutico , Dalteparina/uso terapêutico , Heparina de Baixo Peso Molecular/uso terapêutico , Doenças Vasculares Periféricas/tratamento farmacológico , Humanos , Medição da Dor , Doenças Vasculares Periféricas/etiologia , Ensaios Clínicos Controlados Aleatórios como Assunto , TinzaparinaRESUMO
BACKGROUND: Age-related cataract accounts for more than 40% of cases of blindness in the world with the majority of people who are blind from cataract living in lower income countries. With the increased number of people with cataract, it is important to review the evidence on the effectiveness of day care cataract surgery. OBJECTIVES: To provide authoritative, reliable evidence regarding the safety, feasibility, effectiveness and cost-effectiveness of day case cataract extraction by comparing clinical outcomes, cost-effectiveness, patient satisfaction or a combination of these in cataract operations performed in day care versus in-patient units. SEARCH METHODS: We searched CENTRAL (which contains the Cochrane Eyes and Vision Group Trials Register) (2015, Issue 7), Ovid MEDLINE, Ovid MEDLINE In-Process and Other Non-Indexed Citations, Ovid MEDLINE Daily, Ovid OLDMEDLINE (January 1946 to August 2015), EMBASE (January 1980 to August 2015), Latin American and Caribbean Health Sciences Literature Database (LILACS) (January 1982 to August 2015), the ISRCTN registry (www.isrctn.com/editAdvancedSearch), ClinicalTrials.gov (www.clinicaltrials.gov) and the World Health Organization (WHO) International Clinical Trials Registry Platform (ICTRP) (www.who.int/ictrp/search/en). We did not use any date or language restrictions in the electronic searches for trials. We last searched the electronic databases on 17 August 2015. SELECTION CRITERIA: We included randomised controlled trials comparing day care and in-patient surgery for age-related cataract. The primary outcome was the achievement of a satisfactory visual acuity six weeks after the operation. DATA COLLECTION AND ANALYSIS: Two review authors independently assessed trial quality and extracted data. We contacted study authors for additional information. We collected adverse effects information from the trials. MAIN RESULTS: We included two trials. One study was conducted in the USA in 1981 (250 people randomised and completed trial) and one study conducted in Spain in 2001 (1034 randomised, 935 completed trial). Both trials used extracapsular cataract extraction techniques that are not commonly used in higher income countries now. Most of the data in this review came from the larger trial, which we judged to be at low risk of bias.The mean change in visual acuity (in Snellen lines) of the operated eye four months postoperatively was similar in people given day care surgery (mean 4.1 lines standard deviation (SD) 2.3, 464 participants) compared to people treated as in-patients (mean 4.1 lines, SD 2.2, 471 participants) (P value = 0.74). No data were available from either study on intra-operative complications.Wound leakage, intraocular pressure (IOP) and corneal oedema were reported in the first day postoperatively and at four months after surgery. There was an increased risk of high IOP in the day care group in the first day after surgery (risk ratio (RR) 3.33, 95% confidence intervals (CI) 1.21 to 9.16, 935 participants) but not at four months (RR 0.61, 95% CI 0.14 to 2.55, 935 participants). The findings for the other outcomes were inconclusive with wide CIs. There were two cases of endophthalmitis observed at four months in the day care group and none in the in-patient group. The smaller study stated that there were no infections or severe hyphaemas.In a subset of participants evaluated for quality of life (VF14 questionnaire) similar change in quality of life before and four months after surgery was observed (mean change in VF14 score: day care group 25.2, SD 21.2, 150 participants; in-patient group: 23.5, SD 25.7, 155 participants; P value = 0.30). Subjective assessment of patient satisfaction in the smaller study suggested that participants preferred to recuperate at home, were more comfortable in their familiar surroundings and enjoyed the family support that they received at home. Costs were 20% more for the in-patient group and this was attributed to higher costs for overnight stay. AUTHORS' CONCLUSIONS: This review provides evidence that there is cost saving with day care cataract surgery compared to in-patient cataract surgery. Although effects on visual acuity and quality of life appeared similar, the evidence with respect to postoperative complications was inconclusive because the effect estimates were imprecise. Given the wide-spread adoption of day care cataract surgery, future research in cataract clinical pathways should focus on evidence provided by high quality clinical databases (registers), which would enable clinicians and healthcare planners to agree clinical and social indications for in-patient care and so make better use of resources.
Assuntos
Procedimentos Cirúrgicos Ambulatórios , Extração de Catarata , Hospitalização , Procedimentos Cirúrgicos Ambulatórios/economia , Procedimentos Cirúrgicos Ambulatórios/métodos , Extração de Catarata/economia , Extração de Catarata/métodos , Estudos de Viabilidade , Hospitalização/economia , Humanos , Complicações Pós-Operatórias , Qualidade de Vida , Ensaios Clínicos Controlados Aleatórios como Assunto , Acuidade VisualRESUMO
BACKGROUND: A range of surgical and non-surgical techniques have received increasing attention in recent years in an effort to reduce the duration of a course of orthodontic treatment. Various surgical techniques have been used; however, uncertainty exists in relation to the effectiveness of these procedures and the possible adverse effects related to them. OBJECTIVES: To assess the effects of surgically assisted orthodontics on the duration and outcome of orthodontic treatment. SEARCH METHODS: We searched the following electronic databases: the Cochrane Oral Health Group's Trials Register (to 10 September 2014), the Cochrane Central Register of Controlled Trials (CENTRAL) (The Cochrane Library 2014, Issue 8), MEDLINE via OVID (1946 to 10 September 2014), EMBASE via OVID (1980 to 10 September 2014), LILACS via BIREME (1980 to 10 September 2014), metaRegister of Controlled Trials (to 10 September 2014), ClinicalTrials.gov (to 10 September 2014), and the World Health Organization (WHO) International Clinical Trials Registry Platform (to 10 September 2014). We checked the reference lists of all trials identified for further studies. There were no restrictions regarding language or date of publication in the electronic searches. SELECTION CRITERIA: Randomised controlled trials (RCTs) evaluating the effect of surgical adjunctive procedures for accelerating tooth movement compared with conventional treatment (no surgical adjunctive procedure). DATA COLLECTION AND ANALYSIS: At least two review authors independently assessed the risk of bias in the trials and extracted data. We used the fixed-effect model and expressed results as mean differences (MD) with 95% confidence intervals (CI). We investigated heterogeneity with reference to both clinical and methodological factors. MAIN RESULTS: We included four RCTs involving a total of 57 participants ranging in age from 11 to 33 years. The interventions evaluated were corticotomies to facilitate orthodontic space closure or alignment of an ectopic maxillary canine, with the effect of repeated surgical procedures assessed in one of these studies. The studies did not report directly on the primary outcome as prespecified in our protocol: duration of orthodontic treatment, number of visits during active treatment (scheduled and unscheduled) and duration of visits. The main outcome assessed within the trials was the rate of tooth movement, with periodontal effects assessed in one trial and pain assessed in one trial. A maximum of just three trials with small sample sizes were available for each comparison and outcome. We assessed all of the studies as being at unclear risk of bias.Tooth movement was found to be slightly quicker with surgically assisted orthodontics in comparison with conventional treatment over periods of one month (MD 0.61 mm; 95% CI 0.49 to 0.72; P value < 0.001) and three months (MD 2.03 mm, 95% CI 1.52 to 2.54; P value < 0.001). Our results and conclusions should be interpreted with caution given the small number of included studies. Information on adverse events was sought; however, no data were reported in the included studies. AUTHORS' CONCLUSIONS: This review found that there is limited research concerning the effectiveness of surgical interventions to accelerate orthodontic treatment, with no studies directly assessing our prespecified primary outcome. The available evidence is of low quality, which indicates that further research is likely to change the estimate of the effect. Based on measured outcomes in the short-term, these procedures do appear to show promise as a means of accelerating tooth movement. It is therefore possible that these procedures may prove useful; however, further prospective research comprising assessment of the entirety of treatment with longer follow-up is required to confirm any possible benefit.
Assuntos
Ortodontia Corretiva/métodos , Adolescente , Adulto , Processo Alveolar/cirurgia , Criança , Dente Canino , Humanos , Má Oclusão/terapia , Osteogênese por Distração/métodos , Ensaios Clínicos Controlados Aleatórios como Assunto , Reoperação , Fatores de Tempo , Técnicas de Movimentação Dentária/métodos , Técnicas de Movimentação Dentária/estatística & dados numéricosRESUMO
BACKGROUND: Cystic fibrosis is an inherited condition causing disease most noticeably in the lungs, digestive tract and pancreas. People with cystic fibrosis often have malnutrition and growth delay. Adequate nutritional supplementation does not improve growth optimally and hence an anabolic agent, recombinant growth hormone, has been proposed as a potential intervention. OBJECTIVES: To evaluate the effectiveness and safety of recombinant human growth hormone therapy in improving lung function, quality of life and clinical status of children and young adults with cystic fibrosis. SEARCH METHODS: We searched the Cochrane Cystic Fibrosis and Genetic Disorders Group's Trials Register comprising references identified from comprehensive electronic database searches and handsearches of relevant journals and abstract books of conference proceedings. Date of latest search: 11 February 2015.We conducted a search of relevant endocrine journals and proceedings of the Endocrinology Society meetings using Scopus and Proceedings First. Date of latest search: 04 March 2015. SELECTION CRITERIA: Randomised and quasi-randomised controlled trials of all preparations of recombinant growth hormone compared to either no treatment, or placebo, or each other at any dose (high-dose and low-dose) or route and for any duration, in children or young adults aged up to 25 years diagnosed with cystic fibrosis (by sweat test or genetic testing). DATA COLLECTION AND ANALYSIS: Two authors independently screened papers, extracted trial details and assessed their risk of bias. MAIN RESULTS: Four controlled trials were included in this review (with 161 participants in total), each with an unclear risk of bias. Analysis of data obtained from these trials shows improvement in height for all comparisons, but improvements in weight and lean tissue mass were only reported in the comparison of standard dose recombinant growth hormone versus no treatment. One study showed moderate improvement at one time point in one parameter of pulmonary function tests, forced vital capacity (per cent predicted) when comparing standard dose recombinant growth hormone and no treatment, but there was no consistent benefit in lung function across all studies. Little evidence was found for improvement in quality of life. An improvement in fasting blood glucose levels was reported when comparing rhGH to placebo only. Exercise capacity improved in participants receiving standard dose recombinant growth hormone versus no treatment, but not for any other comparison. There is insufficient evidence to conclude any changes in hospitalisations, antibiotic use or significant adverse effects. AUTHORS' CONCLUSIONS: Recombinant growth hormone therapy is effective in improving the intermediate outcomes in height, weight and lean tissue mass when compared with no treatment. One measure of pulmonary function test showed moderate improvement at a single time point, but no consistent benefit was seen across all studies. No significant changes in quality of life, clinical status or side-effects were observed in this review. Long-term, well-designed randomised controlled trials of recombinant growth hormone therapy in people with cystic fibrosis are required prior to evaluation of human growth hormone treatment for routine use.
Assuntos
Estatura/efeitos dos fármacos , Fibrose Cística/tratamento farmacológico , Hormônio do Crescimento Humano/uso terapêutico , Adolescente , Glicemia/metabolismo , Índice de Massa Corporal , Peso Corporal/efeitos dos fármacos , Peso Corporal/fisiologia , Criança , Fibrose Cística/complicações , Tolerância ao Exercício/efeitos dos fármacos , Tolerância ao Exercício/fisiologia , Jejum/sangue , Humanos , Qualidade de Vida , Ensaios Clínicos Controlados Aleatórios como Assunto , Proteínas Recombinantes/uso terapêutico , Capacidade Vital/efeitos dos fármacos , Capacidade Vital/fisiologia , Adulto JovemRESUMO
BACKGROUND: Rosacea is a common chronic skin condition affecting the face, characterised by flushing, redness, pimples, pustules and dilated blood vessels. The eyes are often involved and thickening of the skin with enlargement (phymas), especially of the nose, can occur in some people. A range of treatment options are available but it is unclear which are most effective. OBJECTIVES: To assess the efficacy and safety of treatments for rosacea. SEARCH METHODS: We updated our searches, to July 2014, of: the Cochrane Skin Group Specialised Register, CENTRAL in The Cochrane Library (2014, Issue 6), MEDLINE (from 1946), EMBASE (from 1974) and Science Citation Index (from 1988). We searched five trials registers and checked reference lists for further relevant studies. SELECTION CRITERIA: Randomised controlled trials in people with moderate to severe rosacea. DATA COLLECTION AND ANALYSIS: Study selection, data extraction, risk of bias assessment and analyses were carried out independently by two authors. MAIN RESULTS: We included 106 studies, comprising 13,631 participants. Sample sizes of 30-100 and study duration of two to three months were most common. More women than men were included, mean age of 48.6 years, and the majority had papulopustular rosacea, followed by erythematotelangiectatic rosacea.A wide range of comparisons (67) were evaluated. Topical interventions: metronidazole, azelaic acid, ivermectin, brimonidine or other topical treatments. Systemic interventions: oral antibiotics, combinations with topical treatments or other systemic treatments, i.e. isotretinoin. Several studies evaluated laser or light-based treatment.The majority of studies (57/106) were assessed as 'unclear risk of bias', 37 'high risk ' and 12 'low risk'. Twenty-two studies provided no usable or retrievable data i.e. none of our outcomes were addressed, no separate data reported for rosacea or limited data in abstracts.Eleven studies assessed our primary outcome 'change in quality of life', 52 studies participant-assessed changes in rosacea severity and almost all studies addressed adverse events, although often only limited data were provided. In most comparisons there were no statistically significant differences in number of adverse events, most were mild and transient. Physician assessments including investigators' global assessments, lesion counts and erythema were evaluated in three-quarters of the studies, but time needed for improvement and duration of remission were incompletely or not reported.The quality of the body of evidence was rated moderate to high for most outcomes, but for some outcomes low to very low.Data for several outcomes could only be pooled for topical metronidazole and azelaic acid. Both were shown to be more effective than placebo in papulopustular rosacea (moderate quality evidence for metronidazole and high for azelaic acid). Pooled data from physician assessments in three trials demonstrated that metronidazole was more effective compared to placebo (risk ratio (RR) 1.98, 95% confidence interval (CI) 1.29 to 3.02). Four trials provided data on participants' assessments, illustrating that azelaic acid was more effective than placebo (RR 1.46, 95% CI 1.30 to 1.63). The results from three studies were contradictory on which of these two treatments was most effective.Two studies showed a statistically significant and clinically important improvement in favour of topical ivermectin when compared to placebo (high quality evidence). Participants' assessments in these studies showed a RR of 1.78 (95% CI 1.50 to 2.11) and RR of 1.92 (95% CI 1.59 to 2.32),which were supported by physicians' assessments. Topical ivermectin appeared to be slightly more effective than topical metronidazole for papulopustular rosacea, based on one study, for improving quality of life and participant and physician assessed outcomes (high quality evidence for these outcomes).Topical brimonidine in two studies was more effective than vehicle in reducing erythema in rosacea at all time points over 12 hours (high quality evidence). At three hours the participants' assessments had a RR of 2.21 (95% CI 1.52 to 3.22) and RR of 2.00 (95% CI 1.33 to 3.01) in favour of brimonidine. Physicians' assessments confirmed these data. There was no rebound or worsening of erythema after treatment cessation.Topical clindamycin phosphate combined with tretinoin was not considered to be effective compared to placebo (moderate quality evidence).Topical ciclosporin ophthalmic emulsion demonstrated effectiveness and improved quality of life for people with ocular rosacea (low quality evidence).Of the comparisons assessing oral treatments for papulopustular rosacea there was moderate quality evidence that tetracycline was effective but this was based on two old studies of short duration. Physician-based assessments in two trials indicated that doxycycline appeared to be significantly more effective than placebo (RR 1.59, 95% CI 1.02 to 2.47 and RR 2.37, 95% CI 1.12 to 4.99) (high quality evidence). There was no statistically significant difference in effectiveness between 100 mg and 40 mg doxycycline, but there was evidence of fewer adverse effects with the lower dose (RR 0.25, 95% CI 0.11 to 0.54) (low quality evidence). There was very low quality evidence from one study (assessed at high risk of bias) that doxycycline 100 mg was as effective as azithromycin. Low dose minocycline (45 mg) was effective for papulopustular rosacea (low quality evidence).Oral tetracycline was compared with topical metronidazole in four studies and showed no statistically significant difference between the two treatments for any outcome (low to moderate quality evidence).Low dose isotretinoin was considered by both the participants (RR 1.23, 95% CI 1.05 to 1.43) and physicians (RR 1.18, 95% CI 1.03 to 1.36) to be slightly more effective than doxycycline 50-100 mg (high quality evidence).Pulsed dye laser was more effective than yttrium-aluminium-garnet (Nd:YAG) laser based on one study, and it appeared to be as effective as intense pulsed light therapy (both low quality evidence). AUTHORS' CONCLUSIONS: There was high quality evidence to support the effectiveness of topical azelaic acid, topical ivermectin, brimonidine, doxycycline and isotretinoin for rosacea. Moderate quality evidence was available for topical metronidazole and oral tetracycline. There was low quality evidence for low dose minocycline, laser and intense pulsed light therapy and ciclosporin ophthalmic emulsion for ocular rosacea. Time needed to response and response duration should be addressed more completely, with more rigorous reporting of adverse events. Further studies on treatment of ocular rosacea are warranted.
Assuntos
Fármacos Dermatológicos/uso terapêutico , Rosácea/tratamento farmacológico , Anti-Infecciosos/uso terapêutico , Tartarato de Brimonidina , Ciclosporina/uso terapêutico , Ácidos Dicarboxílicos/uso terapêutico , Doxiciclina/uso terapêutico , Feminino , Humanos , Ivermectina/uso terapêutico , Masculino , Metronidazol/uso terapêutico , Pessoa de Meia-Idade , Soluções Oftálmicas/uso terapêutico , Quinoxalinas/uso terapêutico , Ensaios Clínicos Controlados Aleatórios como Assunto , Tetraciclina/uso terapêuticoRESUMO
BACKGROUND: Cystic fibrosis is a genetic disorder which can lead to multiorgan dysfunction. Malabsorption of fat and fat-soluble vitamins (A, D, E, K) may occur and can cause subclinical deficiencies of some of these vitamins. Vitamin K is known to play an important role in both blood coagulation and bone formation. Supplementation with vitamin K appears to be one way of addressing the deficiency, but there is very limited agreement on the appropriate dose and frequency of use of these supplements. OBJECTIVES: To assess the effects of vitamin K supplementation in people with cystic fibrosis and to determine the optimal dose and route of administration of vitamin K for both routine and therapeutic use. SEARCH METHODS: We searched the Cochrane Cystic Fibrosis and Genetic Disorders Group's Trials Register comprising references identified from comprehensive electronic database searches and handsearches of relevant journals and abstract books of conference proceedings.Most recent search: 08 October 2014. SELECTION CRITERIA: Randomised and quasi-randomised controlled trials of all preparations of vitamin K used as a supplement compared to either no supplementation (or placebo) at any dose or route and for any duration, in children or adults diagnosed with cystic fibrosis (by sweat test or genetic testing). DATA COLLECTION AND ANALYSIS: Two authors independently screened papers, extracted trial details and assessed their risk of bias. MAIN RESULTS: Two trials (total of 32 participants) each lasting one month were included in the review and were assessed as having a moderate risk of bias. One was a dose-ranging parallel group trial in children (aged 8 to 18 years); and the other (with an older cohort) had a cross-over design comparing supplements to no treatment, but no separate data were reported for the first intervention period. Neither of the trials addressed any of the primary outcomes (coagulation, bone formation and quality of life). Both trials reported the restoration of serum vitamin K and undercarboxylated osteocalcin levels to the normal range after one month of daily supplementation with 1 mg of vitamin K. AUTHORS' CONCLUSIONS: Evidence from randomised controlled trials on the benefits of routine vitamin K supplementation for people with CF is currently weak and limited to two small trials of short duration. However, no harm was found and until further evidence is available, the present recommendations should be adhered to.
Assuntos
Fibrose Cística/sangue , Deficiência de Vitamina K/tratamento farmacológico , Vitamina K/administração & dosagem , Vitaminas/administração & dosagem , Adolescente , Adulto , Coagulação Sanguínea/efeitos dos fármacos , Criança , Fibrose Cística/complicações , Suplementos Nutricionais , Humanos , Osteogênese/efeitos dos fármacos , Qualidade de Vida , Ensaios Clínicos Controlados Aleatórios como Assunto , Deficiência de Vitamina K/complicaçõesRESUMO
This study was carried out to verify if composites could be bleached using chlorine dioxide as compared with hydrogen peroxide. 3M ESPE Filtek Z350 Universal Restorative discs were prepared (n=40), with dimensions 5 mm diameter x 2 mm thickness. The discs were divided into 4 groups of 10 discs each. Color assessment was performed by CIEDE2000. The discs were stained with coffee, tea, wine and distilled water (control) solutions for 14 days, 5 hours daily. Color assessment was repeated on stained discs and followed by bleaching of 5 discs from each group using chlorine dioxide and hydrogen peroxide in-office systems. Finally, a last color assessment was performed and compared statistically. DE2000 after bleaching was very close to baseline for both the bleaching agents, although chlorine dioxide showed better results than hydrogen peroxide. After staining, there was a clinically significant discoloration (∆E2000≥3.43) for the tea, coffee and wine groups, and discoloration (∆E2000) was seen more in the wine group as compared to tea and coffee. Overall, the control group (distilled water) had the least color change in the three intervals. After bleaching, the color in all specimens returned close to the baseline. The color differences between bleaching and baseline were less than 3.43 for all groups. The obtained results show that chlorine dioxide is slightly superior to hydrogen peroxide in the bleaching of composites, while maintaining the shade of the composite close to the baseline.
Este estudo foi realizado para verificar se resinas compostas podem ser clareadas com uso do dióxido de cloro, em comparação com peróxido de hidrogênio. Foram preparados discos com resina restauradora Filtek Z350 3M ESPE (n=40), com dimensões 5 mm de diâmetro × 2 mm de espessura. Os discos foram divididos em 4 grupos de 10 discos cada. A avaliação da cor foi realizada por meio do CIEDE2000. Os discos foram manchados com soluções de café, chá, vinho e água destilada (controle) por 5 h diárias durante 14 dias. A avaliação da cor foi repetida nos discos manchados e seguida por clareamento de 5 discos de cada grupo, utilizando dióxido de cloro ou peróxido de hidrogênio pela técnica de consultório. Finalmente, uma última avaliação da cor foi realizada e as técnicas comparadas estatisticamente. DE2000 após o clareamento foi muito próxima ao baseline, para ambos os agentes clareadores, embora o dióxido de cloro tenha mostrado melhores resultados do que o peróxido de hidrogênio. Após o manchamento, houve uma descoloração clinicamente significativa (ΔE2000≥3,43) para os grupos de chá, café e vinho, sendo que o clareamento (ΔE2000) foi melhor obtido com o grupo do vinho, em comparação com chá e café. No geral, o grupo controle (água destilada) teve a menor mudança de cor nos três intervalos. Após o clareamento, a cor em todos os espécimes voltou próxima ao baseline. As diferenças de cor entre o clareamento e o baseline foram inferiores a 3,43 para todos os grupos. Os resultados indicam que o dióxido de cloro é ligeiramente superior ao peróxido de hidrogênio no clareamento de resinas compostas, mantendo a cor próxima à escala do baseline.
Assuntos
Humanos , Autoanticorpos/análise , Imunoglobulina G/imunologia , L-Lactato Desidrogenase/imunologia , Malonatos/efeitos adversos , Nicardipino/efeitos adversos , Doença Crônica , Insuficiência Cardíaca/tratamento farmacológico , Insuficiência Cardíaca/imunologia , Hepatite/tratamento farmacológico , Hepatite/imunologia , L-Lactato Desidrogenase/sangue , Malonatos/administração & dosagem , Nicardipino/administração & dosagemRESUMO
BACKGROUND: Thalassemia is an inherited blood disorder, caused by mutations in regulatory genes and transmitted as an autosomal recessive disorder, which results in a reduced rate of synthesis of one of the globin chains that make up haemoglobin. In ß-thalassaemia major there is an underproduction of ß-globin chains combined with excess of free α-globin chains. The excess free α-globin chains damage the red blood cell membranes, leading to their destruction and a phenomenon termed ineffective erythropoiesis. The conventional approach to treatment is based on the correction of haemoglobin status through regular blood transfusions and iron chelation therapy for iron overload. Although conventional treatment has the capacity to improve the quality of life of people with ß-thalassaemia major, allogeneic hematopoietic stem cell transplantation is the only currently available procedure which has the potential to definitively cure the disease. OBJECTIVES: To evaluate the effectiveness and safety of different types of allogeneic hematopoietic stem cell transplantation, in people with severe transfusion-dependant ß-thalassaemia major, ß-thalassaemia intermedia or ß0/+- thalassaemia variants requiring chronic blood transfusion. SEARCH METHODS: We searched the Cochrane Cystic Fibrosis and Genetic Disorders Group Haemoglobinopathies Trials Register comprising references identified from comprehensive electronic database searches and handsearches of relevant journals and abstract books of conference proceedings.Date of the most recent search: 11 November 2013. SELECTION CRITERIA: Randomised controlled trials and quasi-randomised controlled trials comparing allogeneic hematopoietic stem cell transplantation with each other or with standard therapy (regular transfusion and chelation regimen). DATA COLLECTION AND ANALYSIS: Two review authors independently screened studies and had planned to extract data and assess risk of bias using standard Cochrane Collaboration methodologies but no studies were identified for inclusion. MAIN RESULTS: No relevant studies were retrieved after a comprehensive search of the literature. AUTHORS' CONCLUSIONS: We were unable to identify any randomised controlled trials or quasi-randomised controlled trials on the effectiveness and safety of different types of allogeneic stem cell transplantation in people with severe transfusion-dependant ß-thalassaemia major or ß0/+- thalassaemia variants requiring chronic blood transfusion. The absence of high-level evidence for the effectiveness of these interventions emphasises the need for well-designed, adequately-powered, randomised controlled clinical trials.