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Abstract Obstetric brachial plexus palsy is a rather common injury in newborns, caused by traction to the brachial plexus during labor. In this context, with the present systematic review, we aimed to explore the use of nerve graft and nerve transfer as procedures to improve elbow flexion in children with obstetric palsy. For the present review, we followed the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines. We searched the MEDLINE, EMBASE, LILACS, The Cochrane Central Register of Controlled Trials, Web of Science, Wholis and SCOPUS databases. Predetermined criteria defined the following requirements for inclusion of a study: Clinical trials, quasi-experiments, and cohort studies that performed nerve graft and nerve transfer in children (≤ 3 years old) with diagnosis of obstetric palsy. The risk of bias in nonrandomized studies of interventions assessment tool was used for nonrandomized studies. Out of seven studies that used both procedures, three of them compared the procedures of nerve graft with nerve transfer, and the other four combined them as a reconstructive method for children with obstetric palsy. According to the Medical Research Council grading system, both methods improved equally elbow flexion in the children. Overall, our results showed that both techniques of nerve graft and nerve transfer are equally good options for nerve reconstruction in cases of obstetric palsy. More studies approaching nerve reconstruction techniques in obstetric palsy should be made, preferably randomized clinical trials, to validate the results of the present systematic review.

Resumo A paralisia obstétrica do plexo braquial é uma lesão bastante comum em neonatos, sendo causada pela tração do plexo braquial durante o trabalho de parto. A presente revisão sistemática tem como objetivo exploraro uso de enxertose transferências de nervo como procedimentos para melhora da flexão do cotovelo em crianças com paralisia obstétrica. A presente revisão sistemática seguiu as diretrizes Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA, na sigla em inglês) e foi baseada em pesquisa nos bancos de dados MEDLINE, EMBASE, LILACS, The Cochrane Central Register of Controlled Trials, Web of Science, Wholis e SCOPUS. De acordo com os critérios pré-determinados, os artigos incluídos eram ensaios clínicos, quase-experimentos, e estudos de coortes sobre enxertos e transferências de nervos em crianças (de até 3 anos de idade) com diagnóstico de paralisia obstétrica. A ferramenta de avaliação Risk of Bias in Non-Randomized Studies of Interventions foi usada em estudos não randomizados. Sete estudos utilizaram os dois procedimentos; três deles compararam os procedimentos de enxerto e transferência de nervo, enquanto os outros quatro os combinaram como método reconstrutivo em crianças com paralisia obstétrica. Segundo o sistema de classificação do Medical Research Council, os dois métodos melhoraram a flexão do cotovelo das crianças de maneira similar. De modo geral, nossos resultados mostraram que o enxerto de nervo e a transferência de nervo são opções igualmente boas para a reconstrução nervosa em casos de paralisia obstétrica. Mais estudos sobre as técnicas de reconstrução nervosa na paralisia obstétrica devem ser realizados, de preferência ensaios clínicos randomizados, para validação dos resultados dessa revisão sistemática.

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Objective To assess the effectiveness and harm of music to reduce anxiety and pain in a plastic surgery setting. Materials and Methods A search strategy was conducted in the MEDLINE, CENTRAL, EMBASE, and LILACS databases. Searches were also conducted in other databases and unpublished literature. Clinical trials were included without language restrictions. The risk of bias was evaluated with the Cochrane Collaboration's tool. An analysis of random effects was conducted. The primary outcomes were anxiety and pain. The secondary outcomes were length of stay, physiological parameters, and adverse effects. The measure of the effect was the mean difference (MD) and standardized MD (SMD) with a 95% confidence interval (CI). The planned interventions were music versus no music. Results Four articles were included in the qualitative and quantitative analysis. A total of 306 patients were found among the four studies. A low risk of bias was shown for most of the study items. The overall standardized mean difference (SMD) for anxiety -3.64 [95%CI -5.71 to -1.56 (p-value = 0.0006)] favoring music compared with no intervention, and for pain the mean difference (MD) was -12.06 [95%CI -33.47 to 9.35 (p-value = 0.2696)] showing no statistical differences. Conclusion Playing music is a safe and free intervention that diminishes anxiety in patients who undergo plastic surgery procedures.

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Background To assess the effectiveness and harms of music to reduce anxiety and pain in cystoscopy. Methods We searched MEDLINE (OVID), EMBASE, LILACS and the Cochrane Central Register of Controlled Trials (CENTRAL) from inception to nowadays. We included clinical trials, involving the assessment of the effect of music in cystoscopy. The primary outcomes were pain and anxiety measured by any scale and the secondary outcomes were length of stay, physiological parameters (blood pressure or heart rate) and adverse effects. Cochrane Collaboration tool was used to assess the risk of bias. We performed the statistical analysis in R and reported information about mean difference (MD) with 95% CI. Heterogeneity was evaluated using the I2 test. Results We included six studies in our qualitative and quantitative analysis. Five studies used a flexible cystoscope and the other one performed the procedure with a rigid cystoscope. Music was played during the procedure in five studies, while the other was before it. All studies compared music vs. no intervention. Almost all items were assessed as low risk of bias; however, the allocation concealment was unclear in all the studies. We found a MD of -1.33 (95% CI -2.45 to -0.21) (I2=97.2%) favoring music for pain and a MD of -8.42 (95% CI -15.02, -1.82) (I2=99.6%) was found, favoring music for anxiety. Conclusions Playing music might be an effective intervention that lowers pain and anxiety in patients who undergo cystoscopy.

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INTRODUCTION: The amount of information and knowledge about pathways and genetic alterations regarding prostate cancer, including the tools available for its study has been recently increasing. Additionally, a variety of molecular signaling pathways control cell proliferation, however, this incompletely understood process is disturbed in cancer cells. MATERIALS AND METHODS: A literature review was made using the MEDLINE, Embase and LILACS databases searching for the following keywords: prostate neoplasms, prostate cancer, molecular medicine, genomics, pathways, and cell cycle. RESULTS: Different biological mechanisms have been associated with the development of prostate cancer, such as alterations in tumor suppressor genes, oncogenes (TP53, RB1, among others) and CDKIs; DNA methylation; chromosomal alterations and rearrangements; changes in PTEN and PI3K / mTOR; global defects in apoptosis; alterations in the androgen receptor (AR); and epigenetic mechanisms. CONCLUSIONS: Good clinical practice and a practical approach have to be based on basic knowledge, thus, in this article, the main genetic alterations, mutations and pathways involved in prostate cancer development were reviewed.

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OBJECTIVE: To determine the effectiveness and harms of using antibiotic prophylaxis (ABP) versus placebo/no intervention in patients undergoing elective laparoscopic cholecystectomy (eLCC) to prevent surgical site infection (SSI). METHODS: We searched MEDLINE (OVID), EMBASE, LILACS, and the Cochrane Central Register of Controlled Trials (CENTRAL) from inception to October 2017. We included clinical trials which involved adults at low risk undergoing eLCC and compared ABP versus placebo/no intervention. The primary outcome was SSI and secondary outcomes were other infections and adverse effects. Cochrane Collaboration tool was used to assess the risk of bias. We performed the statistical analysis in R and reported information about risk difference (RD) with a 95% confidence interval (CI). Heterogeneity was evaluated using the I2 test. We produced network diagrams to show the amount of evidence available for each outcome and the most frequent comparison. RESULTS: We included 18 studies in qualitative and quantitative analysis. The antibiotics most commonly studied were cefazolin and cefuroxime. We found high risk of detection bias in one study and attrition bias in another. Unclear risks of selection, performance, and detection bias were frequent. For SSI, we found no heterogeneity I2 = 0% and no inconsistency p = 0.9780. No significant differences were found when compared ABP versus placebo/no intervention. Cefazolin had a RD of - 0.00 (95% CI - 0.01 to 0.01). We found no differences in regular meta-analysis, with a RD of - 0.00 (95% CI - 0.01 to 0.01) as well as for intra-abdominal and distant infections. Adverse effects were only assessed in one study, without any case reported. CONCLUSIONS: This systematic review demonstrated no differences between ABP versus placebo/no intervention when using to prevent SSI and intra-abdominal and distant infections in patients at low risk undergoing eLCC.

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Purpose: To determine the effectiveness and harm of cytoreductive nephrectomy versus no intervention in patients with metastatic renal carcinoma who undergo targeted therapy to improve overall survival. Materials and Methods: A search strategy was conducted in the MEDLINE, CENTRAL, Embase, HTA, DARE, NHS, and LILACS databases. Searches were also conducted for unpublished literature through references from relevant articles identified through the search, conferences, thesis databases, OpenGrey, Google Scholar, and clinicaltrials.gov, among others. Studies were included without language restrictions. The risk of bias assessment was made by using a modified Cochrane Collaboration tool. A meta-analysis of fixed effects was conducted. The expected outcomes were overall survival, quality of life, adverse effects, mortality, and progression- free survival. The measure of the effect was the hazard ratio (HR) with a 95% confidence interval (CI). The planned comparison was cytoreductive nephrectomy versus no intervention. Results: A total of 22,507 patients were found among seven studies. Seven studies were included in the qualitative analysis (eight publications) and five in the quantitative analysis for overall survival. One study reported progression-free survival and one reported targeted therapy toxicities. A low risk of bias was shown for most of the study items. The HR for overall survival was 0.58 (95% CI, 0.50 to 0.65) favoring cytoreductive nephrectomy compared with no intervention. Conclusions: Cytoreductive nephrectomy is effective for improving overall survival in patients with metastatic renal carcinoma who undergo targeted therapy compared with no intervention.

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