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Search Results: 1 - 10 of 14209 matches for " Mariza Ribeiro;Alvarenga "
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Correlation analysis of the long latency auditory evoked potential N2 and cognitive P3 with the level of lead poisoning in children
Alvarenga, Kátia de Freitas;Bernardez-Braga, Gabriela Rosito Alvarez;Zucki, Fernanda;Duarte, Josilene Luciene;Lopes, Andrea Cintra;Feniman, Mariza Ribeiro;
International Archives of Otorhinolaryngology , 2013, DOI: 10.7162/S1809-97772013000100007
Abstract: introduction: the effects of lead on children's health have been widely studied. aim: to analyze the correlation between the long latency auditory evoked potential n2 and cognitive p3 with the level of lead poisoning in brazilian children. methods: this retrospective study evaluated 20 children ranging in age from 7 to 14 years at the time of audiological and electrophysiological evaluations. we performed periodic surveys of the lead concentration in the blood and basic audiological evaluations. furthermore, we studied the auditory evoked potential long latency n2 and cognitive p3 by analyzing the absolute latency of the n2 and p3 potentials and the p3 amplitude recorded at cz. at the time of audiological and electrophysiological evaluations, the average concentration of lead in the blood was less than 10 ug/dl. results: in conventional audiologic evaluations, all children had hearing thresholds below 20 dbhl for the frequencies tested and normal tympanometry findings; the auditory evoked potential long latency n2 and cognitive p3 were present in 95% of children. no significant correlations were found between the blood lead concentration and latency (p = 0.821) or amplitude (p = 0.411) of the p3 potential. however, the latency of the n2 potential increased with the concentration of lead in the blood, with a significant correlation (p = 0.030). conclusion: among brazilian children with low lead exposure, a significant correlation was found between blood lead levels and the average latency of the auditory evoked potential long latency n2; however, a significant correlation was not observed for the amplitude and latency of the cognitive potential p3.
Hearing loss and acquired immune deficiency syndrome: systematic review
Araújo, Eliene da Silva;Zucki, Fernanda;Corteletti, Lilian Cássia Bórnia Jacob;Lopes, Andrea Cintra;Feniman, Mariza Ribeiro;Alvarenga, Kátia de Freitas;
Jornal da Sociedade Brasileira de Fonoaudiologia , 2012, DOI: 10.1590/S2179-64912012000200017
Abstract: purpose: to investigate the occurrence of hearing loss in individuals with hiv/aids and their characterization regarding type and degree. research strategy: it was conducted a systematic review of the literature found on the electronic databases pubmed, embase, adolec, ibecs, web of science, scopus, lilacs and scielo. selection criteria: the search strategy was directed by a specific question: "is hearing loss part of the framework of hiv/aids manifestations?", and the selection criteria of the studies involved coherence with the proposed theme, evidence levels 1, 2 or 3, and language (portuguese, english and spanish). data analysis: we found 698 studies. after an analysis of the title and abstract, 91 were selected for full reading. out of these, 38 met the proposed criteria and were included on the review. results: the studies reported presence of conductive, sensorineural, and mixed hearing loss, of variable degrees and audiometric configurations, in addition to tinnitus and vestibular disorders. the etiology can be attributed to opportunistic infections, ototoxic drugs or to the action of virus itself. the auditory evoked potentials have been used as markers of neurological alterations, even in patients with normal hearing. conclusion: hiv/aids patients may present hearing loss. thus, programs for prevention and treatment of aids must involve actions aimed at auditory health.
Rela??o entre nível de chumbo no sangue e desempenho nas habilidades do processamento auditivo
Moraes, Tamyne Ferreira Duarte de;Gon?alves, Thaís dos Santos;Salvador, Karina Kr?hembühl;Lopes, Andréa Cintra;Alvarenga, Kátia de Freitas;Feniman, Mariza Ribeiro;
Arquivos Internacionais de Otorrinolaringologia , 2012, DOI: 10.7162/S1809-48722012000100005
Abstract: introduction: the contamination by lead affects all the nervous systems from the human body, mostly the nervous system. objective: investigate if there is correlation between the blood lead levels and the performance in tests of hearing process. method: retrospective study. 73 children, with ages between 7 to 15 years, residents in a area where happened emission of lead above the permitted, with level of blood lead level bigger or equal to 10 micrograms/dl, audiological exams (audiometry and tympanometry) inside the normality patterns. to evaluate the hearing process were used the auditory fusion test-revised (aft-r), subtest 1, and the dichotic test of digits (binaural integration stage). was used the spearman test to verify the correlation between the data. results: the blood lead level varieties from 10 to 30,2 micrograms/dl, being the average corresponding to 15,8 micrograms/dl (standard deviation of 4,8). from those children, 60,3% presented a bad performance for the right ear and 67,3% presented a bad performance of the left ear. according to the results of the tests of correlation of spearman, there were no significant statistical between the level of lead and the results of hearing processing tests. conclusion: there were no correlation between the blood lead level and the performance in the abilities of the hearing process; however the contaminated children by the lead presented a lower performance in the abilities of the hearing processing.
Altera??es auditivas em trabalhadores de indústrias madeireiras do interior de Rond?nia
Lopes, Andréa Cintra;Santos, Cibele Carméllo;Alvarenga, Kátia de Freitas;Feniman, Mariza Ribeiro;Caldana, Magali de Lourdes;Oliveira, Ariádnes Nobrega de;Jorge, Tatiane Martins;Bastos, José Roberto Magalh?es;
Revista Brasileira de Saúde Ocupacional , 2009, DOI: 10.1590/S0303-76572009000100010
Abstract: occupational noise is considered a physical risk that is frequent in almost all industrial segments. that is why occupational safety and health professionals give it special attention. the present study investigated the presence of audiometric alterations in wood industry workers from the countryside of rond?nia, brazil. sixteen workers of three industries took part in the study. they were interviewed on their hearing capacities and went through audiologic examination by means of preliminary tonal audiometry and acustic impedance tests. all the participants were male, most of them under 25 years old. they reported not having finished elementary school. half of the sample presented auditory complaints and mentioned use of hearing protectors. audiometric tracings disclosed alterations in half of the sample.
Auditory complaints and audiologic assessment in children with surgically repaired cleft lip and palate
Cerom, Jaqueline Louren?o;José, Maria Renata;Azenha, Fabiana de Souza Pinto;Macedo, Camila de Cássia;Alvarenga, Kátia de Freitas;Lopes, Andréa Cintra;Feniman, Mariza Ribeiro;
International Archives of Otorhinolaryngology , 2013, DOI: 10.7162/S1809-97772013000200011
Abstract: introduction: at the initial consultation, the speech-language pathologist and audiologist may consider possible diagnostic hypotheses based on the child's history and the parents' complaint. aim:to investigate the association of hearing complaints with the findings obtained in the conventional audiologic assessment in children with cleft lip and palate. retrospective study. methods: we analyzed medical charts of 1000 patients with cleft lip and palate who underwent surgical repair between 1988 and 1995 at a mean age of 6 years 8 months. we excluded charts with records of inconsistent audiological responses and charts with missing data for any of the audiologic evaluations considered. thus, the sample consisted of 393 records. results: two hundred thirty-nine patients presented hearing loss in one or both ears, but only 3.8% reported hearing complaints. the most frequent were otorrhea followed by otalgia. there was no statistical significance between the complaint and gender (p = 0.26) nor between the complaint and hearing loss (p = 0.83). conclusion: this study showed no association between the hearing complaint and the conventional audiologic assessment.
Algumas considera es sobre o fazer científico realizadas a partir da análise dos modelos de ciência propostos por Taylor, Wundt e Watson Some considerations about the scientific makings acomplished from the science models analyses proposed by Taylor, Wundt and Watson
Bruno Alvarenga Ribeiro
Psicologia: Ciência e Profiss?o , 2003, DOI: 10.1590/s1414-98932003000200013
Abstract: A história das ciências como um todo, incluindo a história das ciências humanas e, particularmente, a história da Psicologia, nos presenteia com exemplos de como às vezes o fazer científico é restringido aos lugares comuns da metodologia. Dessa forma, o objetivo deste artigo é refletir sobre a cren a de que a ciência é o próprio método que ela utiliza, demonstrando que metodologias particulares decorrem da ado o de determinados pressupostos filosóficos também particulares, que podem levar o fazer científico a algumas incorre es, nem sempre refutáveis por quest es de lógica. Science history as a whole, including the history of the human sciences and particularly Psychology history, offers good exemples of how scientific development can be inserted in the common place of methodology. Thus, the main goal of this article is to reflect about the belief that science itself is the proper method used. It shows that specific methodologies result from the acceptance of certain philosophical statements, also espefic, which can cause some inaccuracy to scientific development, not always refutable by logics matters.
Teste de Habilidade de Aten??o Auditiva Sustentada (THAAS) em crian?as de sete anos com fissura labiopalatina
Lemos, Isabel Cristina Cavalcanti;Feniman, Mariza Ribeiro;
Brazilian Journal of Otorhinolaryngology , 2010, DOI: 10.1590/S1808-86942010000200009
Abstract: cleft lip and palate (clp) is a risk indicator to middle ear alterations, which may damage the development of auditory abilities such as attention that is essential to learn new skills, oral and written communication. studies on attention process with clp population are recent and poorly explored in the specific literature. thus, this study aims to contribute with new subsidies in the field as it investigates the performance of children with clp in sustained auditory attention ability test (saaat). material and method: comparison of saaat performance between children with clp and children without it. prospective study. results: anova was used as variance analysis model with two factors to study the variables such as group and gender. the clp group showed an average of 2.5 units higher than the control group. this difference is between 0.7 and 4.4 with 95% certain. conclusion: children with cleft lip and palate had poorer performance on saaat when compared to those without such craniofacial anomaly, considering attention reduction only.
Crian?as com fissura isolada de palato: desempenho nos testes de processamento auditivo
Boscariol, Mirela;André, Karina Delgado;Feniman, Mariza Ribeiro;
Revista Brasileira de Otorrinolaringologia , 2009, DOI: 10.1590/S0034-72992009000200009
Abstract: many children with auditory processing disorders have a high prevalence of otitis media, a middle ear alterations greatly prevalent in children with palatine and lip clefts. aim: to check the performance of children with palate cleft alone (pc) in auditory processing tests. prospective study. materials and methods: twenty children (7 to 11 years) with cp were submitted to sound location tests (sl), memory for verbal sounds (mssv) and non verbal sounds in sequence (mssnv), revised auditory fusion (aft-r), pediatric test of speech intelligibility/synthetic sentences (psi/ssi), alternate disyllables (ssw) and digit dichotic (dd). the children performances in the tests were classified in bad and good. results: there was no statistically significant difference between genders and ears. the average values obtained were 2.16, 2.42, 4.37, 60.50ms; 40.71 to 67.33%; 96.25 to 99.38%; 73.55 to 73.88% and 58.38 to 65.47% respectively for the mssnv, mssv, ls, aft-r, psi/ssi tests with ipsilateral (psi/ssimci) and contralateral (psi/ssi/mcc) competitive message, dd and ssw tests. conclusion: a high percentage of children showed worse results in the aft-r, dd, ssw tests and in the psi/ssimci tests. the best performances happened in the sound location tests, verbal and non-verbal sounds for sequential memory and for psi/ssimcc tests.
Impacts of Climate Change on the Hydrology of a Small Brazilian Headwater Catchment Using the Distributed Hydrology-Soil-Vegetation Model  [PDF]
Lívia Alves Alvarenga, Carlos Rogério de Mello, Alberto Colombo, Sin Chan Chou, Luz Adriana Cuartas, Marcelo Ribeiro Viola
American Journal of Climate Change (AJCC) , 2018, DOI: 10.4236/ajcc.2018.72021
Abstract: Climate change is one of the greatest issues for human society. The objective of this study is to assess the impacts of future climate change on seasonal average discharge and monthly water budget in a small headwater catchment, located on the Grande River basin, in Minas Gerais, Brazil. The assessment is carried out using the hydrology model, DHSVM. The atmospheric forcing to drive the Distributed Hydrology-Soil-Vegetation Model (DHSVM) is derived from the downscaling of the HadGEM2-ES projections by the Eta Regional Climate Model, at 5-km high resolution. The projections assume the RCP4.5 and RCP8.5 IPCC AR5 emission scenarios. Baseline period was taken between 1961 and 1990. The projections are assessed in three time slices (2011-2040, 2041-2070 and 2071-2099). The climate change is assessed in time slices of 30 years and in comparison against the baseline period to evaluate the hydrological changes in the catchment. The results showed differences in the hydrological behavior between the emission scenarios and though time slices. Reductions in the magnitude of the seasonal average discharge and monthly water budget may alter the water availability. Under the RCP4.5 scenario, results show greater reductions in the water availability in the first time slice, whereas under RCP8.5 scenario greater reductions are indicated in the third time slice.
Evaluation of different rotary devices on bone repair in rabbits
Ribeiro Junior, Paulo Domingos;Barleto, Christiane Vespasiano;Ribeiro, Daniel Araki;Matsumoto, Mariza Akemi;
Brazilian Dental Journal , 2007, DOI: 10.1590/S0103-64402007000300007
Abstract: in oral surgery, the quality of bone repair may be influenced by several factors that can increase the morbidity of the procedure. the type of equipment used for ostectomy can directly affect bone healing. the aim of this study was to evaluate bone repair of mandible bone defects prepared in rabbits using three different rotary devices. fifteen new zealand rabbits were randomly assigned to 3 groups (n=5) according to type of rotary device used to create bone defects: i - pneumatic low-speed rotation engine, ii - pneumatic high-speed rotation engine, and iii - electric low-speed rotation engine. the anatomic pieces were surgically obtained after 2, 7 and 30 days and submitted to histological and morphometric analysis. the morphometric results were expressed as the total area of bone remodeling matrix using an image analysis system. increases in the bone remodeling matrix were noticed with time along the course of the experiment. no statistically significant differences (p>0.05) were observed among the groups at the three sacrificing time points considering the total area of bone mineralized matrix, although the histological analysis showed a slightly advanced bone repair in group iii compared to the other two groups. the findings of the present study suggest that the type of rotary device used in oral and maxillofacial surgery does not interfere with the bone repair process.
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