Sedação com midazolam e hidroxizina por via oral em Odontopediatria: ensaio clínico randomizado, controlado e cruzado

The effectiveness of oral midazolam in pediatric dentistry is controversial. This randomized, controlled, crossover, double blind clinical trial was conducted in order to study the effect of midazolam, used either alone or in association with hydroxyzine, during child dental treatment. Thirty seven dental sedation sessions were carried out on 11 ASA I uncooperative children less than five years-old. In each appointment children were randomly assigned to groups: P - placebo, M - midazolam (1.0 mg/kg), or MH - midazolam (0.75 mg/kg) plus hydroxyzine (2.0 mg/kg). Vital signs (blood pressure, breathing rate, pulse and oxygen saturation) and behavior parameters (consciousness, crying, movement, overall behavior) were evaluated every 15 minutes. Friedman and Wilcoxon statistical tests were used to compare groups and different moments in the same group. Normal values of vital signs were usually registered. Heart rate increased in groups P and M as the session went on. Group M presented less crying and movement at the first 15 minutes of treatment. Group MH caused more drowsiness at the beginning of the session. Overall behavior was better in group M than in groups P or MH. Group M produced effective sedation in 77% of the cases, and group MH did so in 30.8%. It was concluded that midazolam was effective and safe, and its association with hydroxyzine did not lead to additional advantages in pediatric dental sedation.Há controvérsias quanto aos benefícios do midazolam na sedação de crianças durante a atenção odontológica. Conduziu-se um ensaio clínico controlado, cruzado e duplo-cego para comparar o efeito sedativo em Odontopediatria da administração oral do midazolam, associado ou não à hidroxizina. Trinta e sete sessões foram realizadas em 11 crianças menores de cinco anos, ASA I. Em cada atendimento, os pacientes receberam aleatoriamente o medicamento conforme os grupos: P - placebo, M - midazolam (1,0 mg/kg); MH - midazolam (0,75 mg/kg) associado à hidroxizina (2,0 mg/kg). Os sinais vitais (pressão arterial, freqüência respiratória, pulso e saturação de oxigênio) e os parâmetros comportamentais (consciência, choro, movimento, comportamento geral) foram avaliados a cada 15 minutos. As comparações entre grupos e entre momentos de atendimento num mesmo grupo foram estabelecidas estatisticamente através dos testes Friedman e Wilcoxon. Os grupos P, M e MH não diferiram quanto aos sinais vitais, os quais se mantiveram dentro de valores aceitáveis. A freqüência cardíaca aumentou nos grupos P e M com o transcorrer da sessão. O grupo M esteve associado a menos choro e movimento nos primeiros 15 minutos de tratamento. O grupo MH apresentou mais sonolência no início da sessão. O comportamento geral foi melhor em M do que em P e MH. M produziu sedação efetiva em 77% dos casos, e MH em 30,8%. Concluiu-se que o midazolam foi efetivo e seguro, e que sua associação à hidroxizina não repercutiu em vantagens adicionais na sedação odontopediátrica

The circulation of human astrovirus genotypes in the Central West Region of Brazil

Out of 1,588 faecal samples of children taken from three locations of the Central West Region of Brazil, 57 were positive for astroviruses (HAstVs) using reverse transcription-polymerase chain reaction (RT-PCR). They were genotyped by nested RT-PCR and/or genomic sequencing. HAstV-1 (42.8%), HAstV-2 (23.2%), HAstV-3 (3.6%), HAstV-4 (14.3%) and HAstVs -5, -6, -7 and -8 (1.8% each) were detected. In Goiânia and Campo Grande, HAstV-1 was the most frequently detected genotype while in Brasília (DF) it was HAstV-2. Shifts in the circulation of astrovirus genotypes were observed in DF and Campo Grande. All samples collected by rectal swabs were viral negative. The astrovirus genotypes were detected in all age groups and there was no correlation between genotype and age group

Detection of calicivirus from fecal samples from children with acute gastroenteritis in the West Central region of Brazil

The objective of this study was to describe the circulation of caliciviruses in the West Central region of Brazil and its correlation with children's gender and age, as well as with the year and months of the sample collection. Reverse transcriptase-polymerase chain reaction was performed to detect the human calicivirus genome in 1006 fecal samples that were collected in Goiânia (n = 696) and Brasília (n = 310). Viral RNA was detected in 8.6% of the samples. No significant difference in viral prevalence was found regarding gender, age or year of the sample. However, it was observed that in Goiânia, there is a higher incidence of caliciviruses from September to March. The analysis employing three primer pairs demonstrated that the Ni/E3 or JV12/13 primer pairs, which detect norovirus (NoV), detected 41 positive samples while the 289/290 primer pair, which detects NoV or sapovirus, detected the remaining 46 samples. Calicivirus circulates in the West Central region of Brazil and for better detection of this virus it is important to use more than one primer pair. Also, we conclude that the seasonality presented by this virus is related to higher humidity in the period

Perfil clínico-epidemiológico da criptococose associada e não associada à infecção pelo HIV na região Centro-Oeste do Brasil / Clinical and epidemiological aspects of cryptococcosis associated and non-associated to HIV infection in Central Western region of Brazil

Objetivo: Analisar as características clínicas-epidemiológicas, segundo a infecção pelo HIV, dos casos de criptococose no estado de Goiás. Métodos: Estudo transversal dos casos de criptococose no período de 2011 a 2014. Utilizou-se registros laboratoriais e prontuários médicos de unidades de saúde referência para a doença. Aplicou testes estatísticos para comparar o grupo HIV positivos e HIV negativos com as variáveis estudadas. Resultados: Identificou 130 casos de criptococose, 116(89,2%) HIV positivos e 14(10,8%) negativos. A meningoencefalite foi a forma clínica predominante em ambos os grupos, assim como a espécie Cryptococcus neoformans. Entre os casos HIV negativos (64,3%) usavam medicamentos imunossupressores. A média da contagem de células TCD4 dos casos HIV positivos foi 58,7 células/mm3e 60,8% foram a óbito, entre os sobreviventes, 43,1% ficaram com sequelas, sendo o déficit visual o mais frequente. Conclusões:  A criptococose é uma doença grave, dada a elevada letalidade e potencial de provocar danos funcionais

Molecular characterization of the NSP4 gene of human group A rotavirus samples from the West Central region of Brazil

Nonstructural protein 4 (NSP4), encoded by group A rotavirus genome segment 10, is a multifunctional protein and the first recognized virus-encoded enterotoxin. The NSP4 gene has been sequenced, and five distinct genetic groups have been described: genotypes A-E. NSP4 genotypes A, B, and C have been detected in humans. In this study, the NSP4-encoding gene of human rotavirus strains of different G and P genotypes collected from children between 1987 and 2003 in three cities of West Central region of Brazil was characterized. NSP4 gene of 153 rotavirus-positive fecal samples was amplified by reverse transcriptase-polymerase chain reaction and then sequenced. For phylogenetic analysis, NSP4 nucleotide sequences of these samples were compared to nucleotide sequences of reference strains available in GenBank. Two distinct NSP4 genotypes could be identified: 141 (92.2%) sequences clustered with NSP4 genotype B, and 12 sequences (7.8%) clustered with NSP4 genotype A. These results reinforce that further investigations are needed to assess the validity of NSP4 as a suitable target for epidemiologic surveillance of rotavirus infections and vaccine development

Reviewing the use of corticosteroids in bronchopulmonary dysplasia

AbstractObjectiveReview the risks and benefits of postnatal corticosteroid use for the treatment of bronchopulmonary dysplasia, considering that there is not a more effective therapy.Data sourcesThe literature review was carried out in the BIREME database, using the terms “bronchopulmonary dysplasia and corticosteroid” in the LILACS, IBECS, MEDLINE, Cochrane Library, and SciELO databases, selecting the most relevant articles on the subject, with emphasis on recent literature published in the last five years.Summary of the dataIn preterm infants, bronchopulmonary dysplasia is still a common problem and remains without a specific therapy, despite knowledge of the several risk factors. The treatment essentially consists of supportive measures, but in the past, corticosteroids were widely used, as they are the only medications that have an impact on disease progression. However, the emergence of cerebral palsy associated with the indiscriminate use of corticosteroids has prevented the prescription of this drug in the last 15 years. Since then, no new measures have been taken, and the incidence of the disease tended to increase during this period, creating the need for a review of corticosteroid use and, possibly, more restricted indications.ConclusionsThe association between risks and benefits of corticosteroid use in preterm infants needs to be considered due to the fact that some infant subpopulations may show more benefits than risks, such as those using mechanical ventilation with difficult weaning