Abstract This article aims to address the meta-legal relations between the management of the speed of the criminal process and the social constraints arising from neoliberal reason. To this end, it is based on the premise established by Foucault and deepened by Dardot and Laval that neoliberalism has become socially rooted to the point of transmuting from a simple economic model to a rationality that spreads to the most diverse social fields. The work is guided by the question: are there harmful effects beyond the loss of quality in the motivation of decisions with the adoption of efficiency logic by the criminal judge? The objective is to verify whether the management principles of this reason may be harmful to the proper functioning of the criminal process. This is an exploratory, interdisciplinary research, based exclusively on bibliographical references. The conclusion is that there are no conditions for intensifying the pace of the criminal process without a loss of quality that is not only technical, but also democratic, since acceleration without other measures ends up catalyzing authoritarian clots that have never been completely expunged from the Brazilian system of criminal procedure.

Resumo Trata-se de artigo que visa abordar as relações metajurídicas entre a gestão da velocidade do processo penal e os constrangimentos sociais oriundos da razão neoliberal. Para tal, partiu-se da premissa instituída por Foucault e aprofundada por Dardot e Laval de que o neoliberalismo se arraigou socialmente ao ponto de se transmutar de um simples modelo econômico a uma racionalidade que se espalha para os mais diversos campos sociais. O trabalho é guiado pela pergunta: há efeitos deletérios para além da perda da qualidade da motivação das decisões com a adoção da lógica eficientista pelo juiz penal? O objetivo é verificar se os princípios de gestão dessa razão podem ser perniciosos ao bom funcionamento do processo penal. É pesquisa de cunho exploratório, de cariz interdisciplinar, calcada em referencial bibliográfico, exclusivamente. Ao cabo, conclui-se que não há condições de se intensificar o ritmo do processo penal sem haver uma perda de qualidade não só técnica, mas também democrática, visto que o aceleramento desprovido de outras medidas acaba por catalisar coágulos autoritários nunca completamente expurgados do sistema processual penal brasileiro.

Abstract Objectives: To determinate the otoprotective efficacy of melatonin.in experimental models of rodents through a systematic review of the literature. Methods: Altogether, 154 articles were found in four databases. The PICOS strategy (Population, Intervention, Comparison, and Outcome) was used to define the eligibility criteria. Studies that met the inclusion criteria for the second step were included in a qualitative synthesis. Each study type was analyzed with the CAMARADES quality of assessment’s checklist and the SYRCLE RoBS risk of bias. Results: Seven articles were selected, and four were included in the meta-analysis. It was possible to obtain seven outcomes according to the standard auditory frequencies presented among the studies, considering a minimum of three standard frequencies. The outcomes analyzed were for the frequencies of 1500, 2000, 3000, 4000, 5000, 6000, and 8000 Hz. Conclusion: Melatonin can provide protection against the ototoxic effects of cisplatin and aminoglycosides at 5000 Hz, 6000 Hz, and 8000 Hz, thereby minimizing the reduction in Otoacustic Emissions (OAE) amplitude. The same effect was not observed in the lower frequencies. Despite the limited number of studies that were evaluated, the results appeared consistent in higher frequencies. However, the methodology of the available studies did not meet the necessary methodological rigor that promotes the safe replicability of these studies.

Abstract Objectives: To review and provide evidence-based recommendations for the diagnosis and treatment of otosclerosis. Methods: Task force members were educated on knowledge synthesis methods, including electronic database search, review and selection of relevant citations, and critical appraisal of selected studies. Articles written in English or Portuguese on otosclerosis were eligible for inclusion. The American College of Physicians’ guideline grading system and the American Thyroid Association’s guideline criteria were used for critical appraisal of evidence and recommendations for therapeutic interventions. Results: The topics were divided into 2 parts: 1) Diagnosis – audiologic and radiologic; 2) Treatment – hearing AIDS, pharmacological therapy, stapes surgery, and implantable devices - bone-anchored devices, active middle ear implants, and Cochlear Implants (CI). Conclusions: The pathophysiology of otosclerosis has not yet been fully elucidated, but environmental factors and unidentified genes are likely to play a significant role in it. Women with otosclerosis are not at increased risk of worsening clinical condition due to the use of contraceptives or during pregnancy. Drug treatment has shown little benefit. If the patient does not want to undergo stapedotomy, the use of hearing aids is well indicated. Implantable systems should be indicated only in rare cases, and the CI should be indicated in cases of profound deafness.

Abstract Objectives: To provide an overview of the main evidence-based recommendations for the diagnosis of hearing loss in children and adolescents aged 0–18 years. Methods: Task force members were educated on knowledge synthesis methods, including electronic database search, review and selection of relevant citations, and critical appraisal of selected studies. Articles written in English or Portuguese on childhood hearing loss were eligible for inclusion. The American College of Physicians’ guideline grading system and the American Thyroid Association’s guideline criteria were used for critical appraisal of evidence and recommendations for therapeutic interventions. Results: The topics were divided into 2 parts: (1) treatment of sensorineural hearing loss: individual hearing aids, bilateral cochlear implants, cochlear implants in young children, unilateral hearing loss, and auditory neuropathy spectrum disorder; and (2) treatment of conductive/mixed hearing loss: external/middle ear malformations, ventilation tube insertion, and tympanoplasty in children. Conclusions: In children with hearing loss, in addition to speech therapy, Hearing AIDS (HAs) or implantable systems may be indicated. Even in children with profound hearing loss, both the use of HAs and behavioral assessments while using the device are important.

Abstract Objectives: To provide an overview of the main evidence-based recommendations for the diagnosis of hearing loss in children and adolescents aged 0 to 18 years. Methods: Task force members were educated on knowledge synthesis methods, including electronic database search, review and selection of relevant citations, and critical appraisal of selected studies. Articles written in English or Portuguese on childhood hearing loss were eligible for inclusion. The American College of Physicians’ guideline grading system and the American Thyroid Association’s guideline criteria were used for critical appraisal of evidence and recommendations for therapeutic interventions. Results: The evaluation and diagnosis of hearing loss: universal newborn hearing screening, laboratory testing, congenital infections (especially cytomegalovirus), genetic testing and main syndromes, radiologic imaging studies, vestibular assessment of children with hearing loss, auditory neuropathy spectrum disorder, autism spectrum disorder, and noise-induced hearing loss. Conclusions: Every child with suspected hearing loss has the right to diagnosis and appropriate treatment if necessary. This task force considers 5 essential rights: (1) Otolaryngologist consultation; (2) Speech assessment and therapy; (3) Diagnostic tests; (4) Treatment; (5) Ophthalmologist consultation.

ABSTRACT Purpose: to analyze the hearing habits of a group of students between public and private schools and compare the degree of exposure to sound stimuli via earphones. Methods: 1,085 public and private school students received a questionnaire on hearing habits and exposure to amplified music. Their answers to these questions were analyzed and compared between the groups of students. The chi-square test compared hearing habits between public and private schools, with the statistical significance level set at 5% (p < 0.05). Result: in general, most students (92%) reported hearing habits of exposure to amplified music. Questionnaire answers indicated a high prevalence of both earphone use (92%) and attendance at places with loud music (63.6%). Conclusion: private school students use earphones more often than those from public schools.

RESUMO Objetivo: analisar os hábitos auditivos de um grupo de alunos e comparar o grau de exposição ao estímulo sonoro via fones de ouvido entre escolas públicas e privadas. Métodos: foram distribuídos questionários contendo perguntas referentes a hábitos auditivos de exposição à música amplificada, aos 1085 alunos de escolas pública e privada. Em seguida, as respostas aos questionamentos foram analisadas e comparadas entre os grupos de alunos. Utilizou-se o teste Qui-quadrado com um nível de significância estatística estabelecido em 5% (p<0,05) para se comparar os hábitos auditivos entre as escolas públicas e privadas. Resultado: de modo geral, a maioria dos alunos (92%) respondeu que tem hábitos auditivos de exposição à música amplificada. Tanto o uso de fones de ouvido (92%) quanto as idas a lugares com música alta (63,6%) tiveram alta prevalência nas respostas aos questionários. Conclusão: alunos de escolas particulares utilizam mais fones de ouvido frequentemente comparados aos alunos de escolas públicas.

Abstract Designing strategic areas for biodiversity protection should help prevent species extinction. However, these delimitations are rarely evaluated for their effectiveness. To determine whether the original design of the Strategic Areas for the Conservation and Restoration of Biodiversity in Paraná (AECR) adequately protected the species and identify the species most likely to become extinct in the region, we analyzed occurrence records for threatened flora in the state’s most degraded phytogeographic regions (Araucaria Forest, Cerrado, and grassland). We developed a list of threatened species for Paraná using herbarium records. We also compiled a threatened species occurrence list for the region by filtering through the herbarium records. Based on the main concepts defining threat status and gap species, we identified the species at an elevated risk of extinction in the study region. A total of 644 threatened species were detected in the regions studied, 86% of which have been recorded within the AECR, and 30% can be characterized as gap species. The species distribution polygons accounted for 98% of species within the AECR and 4% as gap species. A total of 54 species (8.38% of the total) are at a higher risk of extinction.

Resumo A concepção de áreas estratégicas para a proteção da biodiversidade deve ajudar a prevenir a extinção das espécies, porém, estas áreas raramente são avaliadas quanto à sua eficácia. Analisamos os registros de ocorrência de espécies ameaçadas da flora nas regiões fitogeográficas mais degradadas do Paraná (Floresta de Araucária, Cerrado e Campos) com o objetivo de determinar se o desenho original das Áreas Estratégicas para a Conservação e Restauração da Biodiversidade no Paraná (AECR) protegia adequadamente as espécies, bem como identificar as espécies com maior probabilidade de extinção na região. Compilamos uma lista de ocorrência de espécies ameaçadas para região por meio de filtragens nos registros de herbário. Comparamos registros individuais e polígonos de distribuição de espécies para determinar a relação entre as ocorrências de espécies e as AECR. Com base nos principais conceitos para determinação dos status de ameaça e de espécies lacunas, foram apontadas as espécies mais fragilizadas na região. Identificamos a presença de 644 espécies ameaçadas nas unidades fitogeográficas em estudo, das quais 86% possuem registro dentro das AECR e 30% podem ser caracterizadas como lacunas. Ao utilizar polígonos de distribuição verificamos variação, computando 98% dentro das AECR e apenas 4% como lacunas. Determinamos que 8.38% (54 spp) podem ser caracterizadas como as mais fragilizadas da região.

ABSTRACT Purpose To analyze the effect of communication training developed for adolescents on the youth’s communication skills. Methods Forty-one young people participated in the study and were divided into two groups. Group I received intervention - communication training for five weeks; Group II - were guided on the importance of voice for communication. Participants had their communication skills assessed before/after interventions through a self-administered questionnaire, answered by the participant and parents. Both groups had oral presentations recorded on video, which were analyzed by speech therapists through the evaluation of the communication profile, listing the aspects that should be observed as a point of strength/opportunity for improvement. Association between qualitative variables was assessed using Fischer’s exact test, Pearson’s chi-square test, McNemar’s test, and McNemar-Bowker’s test. To compare groups, paired t-test and t-test for independent samples, p level <0.05, were used. Results The analysis of questionnaires showed improvement in GI in two of the four skills assessed and no difference for GII. The video evaluations showed a significant difference between the groups in terms of eye contact and speech velocity. Conclusion This study points out that the communication training method applied to young people might improve communicative skills, providing some insights into their communication strengths and potential areas for development.

RESUMO Objetivo Analisar o efeito de um treinamento em comunicação desenvolvido para adolescentes nas habilidades comunicativas dos jovens. Método Quarenta e um jovens participaram do estudo divididos em dois grupos. Grupo I – treinamento de comunicação por duas semanas; Grupo II – palestra sobre importância da voz. Os participantes tiveram suas habilidades comunicativas avaliadas antes e após as intervenções mediante questionário autoaplicado respondido pelos jovens e seus pais. Ambos os grupos tiveram apresentações orais gravadas antes e após as intervenções, que foram avaliadas por fonoaudiólogos através de questionário, listando características da comunicação. A associação entre variáveis qualitativas foi verificada usando teste exato de Fisher, qui-quadrado de Pearson, teste de McNemar e teste de McNemar-Bowker. Para comparação entre os grupos, foram usados teste t para amostras pareadas e teste t para amostras independentes com nível de significância de 95%. Resultados A análise dos questionários mostrou melhora do Grupo I em duas das quatro habilidades avaliadas, não havendo diferença no Grupo II. A avalição dos vídeos mostrou diferença significativa entre os grupos no contato visual e na velocidade da fala. Conclusão O estudo mostrou que o método de treinamento de comunicação aplicado aos jovens, melhorou habilidades comunicativas, fornecendo autoconhecimento sobre seus pontos fortes e pontos que podem ser melhorados.

Abstract Objective: To review the literature on the diagnosis and treatment of vestibular schwannoma. Methods: Task force members were educated on knowledge synthesis methods, including electronic database search, review and selection of relevant citations, and critical appraisal of selected studies. Articles written in English or Portuguese on vestibular schwannoma were eligible for inclusion. The American College of Physicians’ guideline grading system and the American Thyroid Association’s guideline criteria were used for critical appraisal of evidence and recommendations for therapeutic interventions. Results: The topics were divided into 2 parts: (1) Diagnosis – audiologic, electrophysiologic tests, and imaging; (2) Treatment – wait and scan protocols, surgery, radiosurgery/radiotherapy, and systemic therapy. Conclusions: Decision making in VS treatment has become more challenging. MRI can diagnose increasingly smaller tumors, which has disastrous consequences for the patients and their families. It is important to develop an individualized approach for each case, which highly depends on the experience of each surgical team.

Abstract Objective: The present study aimed to perform a morphological and morphometric analysis of cochlear structures of C57BL/6J mice receiving oral melatonin for a 12-month period. Methods: 32 male C57BL/6J were divided into control and melatonin groups. Control received saline and ethanol solution and melatonin group, 50 μL of 10 mg of melatonin/kg/day orally for a 12-month period. After de experiment the animals were sacrificed into a 40% concentration of CO2 chamber, and the blades were morphological and morphometrically analyzed. Results: The melatonin group revealed a higher median density of viable cells (45 ± 10.28 cells/100 μm2, 31–73, vs. 32 ± 7.47 cells/100 μm2, 25–48). The median area of stria vascularis was 55.0 ± 12.27 cells/100 μm2 (38–80) in the control, and 59.0 ± 16.13 cells/100 μm2 (40–134) in the melatonin group. The morphometric analysis of the spiral ligament reveals a higher median of total viable neurons in the melatonin (41 ± 7.47 cells/100 μm2, 27–60) than in the control group (31 ± 5.68 cells/100 μm2, 21–44). Conclusion: Although melatonin is a potent antioxidant, it does not completely neutralize the occurrence of presbycusis; however, it may delay the onset of this condition. Level of evidence: 3.

Resumo Introdução: Estudos comprovam os efeitos ototóxicos dos antimaláricos em pessoas que fazem uso destes medicamentos, porém pouco se sabe sobre a toxicidade destes fármacos no sistema auditivo de neonatos quando ingeridos pelas mães no período gestacional. Objetivo: Verificar a incidência de perda auditiva em neonatos de mães tratadas para malária durante a gestação sem outros indicadores de risco associados. Método: Estudo quantitativo, de coorte retrospectivo, desenvolvido no Hospital de Base Dr. Ary Pinheiro e na Clínica Limiar, ambos em Porto Velho (Rondônia). Compuseram a amostra 527 recém-nascidos divididos em dois grupos: grupo exposto (n = 32) e grupo não exposto (n = 495). A coleta de dados ocorreu de setembro de 2014 a dezembro de 2015, através de entrevista com as genitoras e/ou responsáveis pelo recém-nascido, investigação nos prontuários dos neonatos e das genitoras e no banco de dados da triagem auditiva neonatal das instituições supracitadas. Resultados: Todos os neonatos do grupo exposto, avaliados através do registro das emissões otoacústicas transientes associado a realização do potencial evocado auditivo de tronco encefálico automático passaram na triagem auditiva neonatal no primeiro exame. Já, entre os recém-nascidos do grupo não exposto, 30 apresentaram falha e foram retestados. Destes, um continuou falhando e foi encaminhado para diagnóstico, no qual foram evidenciados resultados dentro da normalidade. Nos neonatos do grupo exposto, a infecção pelo Plasmodium vivax foi a mais frequente, mostrando distribuição semelhante entre os trimestres gestacionais, sendo a cloroquina o antimalárico mais utilizado e o tratamento medicamentoso realizado mais frequentemente no terceiro trimestre, porém tais achados não mostraram influência sobre os achados audiológicos dos neonatos estudados. Conclusão: O presente estudo não identificou casos de perda auditiva nos neonatos de mães que utilizaram antimaláricos na gestação.

Abstract Introduction: Studies have demonstrated the ototoxic effects of antimalarial drugs in individuals who receive these drugs, but little is known regarding the toxicity of these drugs in the newborn auditory system when administered to the mother receive the drug during pregnancy. Objective: To verify the incidence of hearing loss in neonates who have no other associated risk indicators, born to mothers treated for malaria during pregnancy. Methods: A retrospective, quantitative cohort study was developed at Hospital de Base Dr. Ary Pinheiro and Clínica Limiar, both located in the municipality of Porto Velho (Rondônia). The sample consisted of 527 newborns divided into two groups: exposed to antimalarials drugs during pregnancy group (n = 32) and non-exposed group (n = 495). Data collection took place from September 2014 to December 2015, through an interview with the mothers and/or guardians of the newborn, through the newborns’ and the mothers’ records, and the neonatal hearing screening database of the above-mentioned institutions. Results: All the neonates in the exposed group, assessed through the recording of transient otoacoustic emissions associated with the automated brainstem auditory evoked potential test, underwent neonatal hearing screening in the first examination. Among the newborns in the non-exposed group, 30 showed failure and were retested. Of these, one continued to fail and was referred for diagnosis, in whom the results showed to be within the normal range. Among the neonates of the exposed group, infection with Plasmodium vivax was the most frequent, and was similarly distributed among the gestational trimesters, and chloroquine was the most commonly used antimalarial drug treatment more often given during the third trimester; these findings did not show any influence on the audiological findings of the studied neonates. Conclusion: The present study did not identify any cases of hearing loss in neonates born to mothers who used antimalarial drugs during gestation.

BACKGROUND In March 2020, the World Health Organization (WHO) launched the Solidarity Program, probably the largest global initiative to encourage and support research in four promising drugs, named Remdesivir, Hydroxychloroquine, β Interferon and the combination Lopinavir / Ritonavir, to reduce the mortality of Coronavirus disease 2019 (COVID-19). OBJECTIVES Considering the potential impact of Solidarity Program to restrain the current pandemic, the present study aims to investigate whether it was designed upon indicators of scientific productivity, defined as the level of the production of new scientific knowledge and of the institutional capabilities, estimated in terms of scientific publications and technological agreements. METHODS The scientific documents on Alphacoronavirus, Betacoronavirus, Gammacoronavirus and Coronavirus were retrieved from Scopus database while the technological agreements on coronavirus were obtained through Cortellis. As for the institutions and countries, we have considered the data on author’s affiliations in both set of data. For comparison, we included the analysis of documents related with other drugs or therapies, such as vaccines and antibodies, which were listed in a Clarivate’s report on coronaviruses research. FINDINGS Most of the analysis refers to documents on Coronavirus, the largest group. The number of documents related to WHO’s drugs are almost five times higher than in the other groups. This subset of documents involves the largest and most diverse number of institutions and countries. As for agreements, we observed a smaller number of institutions involved in it, suggesting differences between countries in terms of technical and human capabilities to develop basic and/or clinical research on coronavirus and to develop new forms or products to treat or to prevent the disease. MAIN CONCLUSIONS Hence, the results shown in this study illustrate that decisions taken by an international scientific body, as WHO, were mainly based in scientific knowledge and institutional competencies.

Objetivos: Comparar a performance, limitações e custo-efetividade do teste pré-natal não invasivo baseado na medição de ácido desoxirribonucleico (ADN) livre fetal com os testes tradicionais em grávidas. Fontes de dados: Bases de dados Guidelines Finder, TRIP database, CMA Infobase, The Cochrane Library, DARE, Bandolier e PubMed. Métodos de revisão: Pesquisa de meta-análises (MA), revisões sistemáticas (RS), ensaios clínicos controlados e randomizados (ECR) e guidelines publicados nas línguas inglesa, portuguesa e espanhola, entre janeiro de 2013 e julho de 2018. Termos utilizados: non-invasive prenatal test e cell-free fetal DNA. Foi utilizada a escala Canadian TASK Force na avaliação dos estudos, atribuição dos níveis de qualidade da evidência e classificação de recomendação. Foram excluídos artigos repetidos ou que não cumpriam os objetivos. O outcome selecionado foi a performance, limitações e custo-efetividade do teste. Resultados: Obtiveram-se 517 artigos, cumprindo 12 os critérios de inclusão: seis guidelines, duas RS e quatro RS com MA. O teste pré-natal não invasivo baseado na pesquisa de ADN livre fetal apresenta melhor performance para as trissomias 21, 18 e 13 que os testes tradicionais. A validade clínica do teste é superior para a trissomia 21. Não é um teste diagnóstico, devendo ser confirmado por teste invasivo, se os resultados forem positivos ou inconclusivos e feito encaminhamento para aconselhamento genético. Conclusões: O teste pré-natal não invasivo baseado na pesquisa de ADN livre fetal para as trissomias 21, 18 e 13 pode ser uma opção para grávidas de alto risco em vez da amniocentese. Se o teste for positivo ou inconclusivo deve ser confirmado por teste invasivo (II-2A). Apresenta limitações, nomeadamente se a idade gestacional for inferior a 10 semanas, obesidade, gravidez múltipla ou neoplasia materna. Nestes casos, as grávidas devem ser estudadas. Atualmente, o custo-efetividade do rastreio sequencial contingente é incerto e o rastreio universal não é custo-efetivo (III-C).

Objectives: We aim to compare the performance, limitations, and cost-effectiveness of non-invasive prenatal cell-free fetal DNA test (cff-DNA), with the traditional tests in pregnant women. Data Sources: Guidelines Finder, TRIP database, CMA-Infobase, The Cochrane Library, DARE, Bandolier, and PubMed. Review methods: We searched for meta-analysis, systematic reviews, controlled and randomized clinical trials, and clinical guidelines published in English, Portuguese, and Spanish languages between January 2013 and July 2018. Searched terms: “non-invasive prenatal test” and “cell-free fetal DNA”. The Canadian TASK Force scale was used to assess the studies’ quality and to assign the level of evidence and strength of recommendation. The selected outcome was performance, limitations, and cost-effectiveness of the test. Results: The search provided 517 articles. Twelve met the inclusion criteria: two were systematic reviews, four were systematic reviews with meta-analysis, and six were clinical guidelines. The cff-DNA test has better performance to detect trisomy 21, 18, and 13 than traditional tests. Its clinical validity is higher for trisomy 21. However, it’s not a diagnostic test. Therefore, a positive or inconclusive result must be confirmed by a diagnostic test and the pregnant women referred for genetic counseling. Conclusions: The cff-DNA test could be an option to detect trisomy 21, 18, and 13 in the high-risk pregnant women, rather than amniocentesis. If the test result is positive or inconclusive, it must be confirmed by an invasive test (II-2A). It has some limitations like test performance before 10 weeks of gestational age, maternal obesity, multiple pregnancies, or maternal neoplasia. In these situations, pregnant women should be studied. Currently, the cost-effectiveness of the contingent screening is uncertain, and the universal screening isn’t cost-effective (III-C).

RESUMEN Esta investigación informa el LWR de peces ornamentales de lagos de llanuras aluviales de la cuenca del río Solimões. Los peces fueron capturados en la isla de Paciência (una isla fluvial) en dos lagos Sacambú y Cacau utilizando cerco 7 m × 4 m y tamaño de malla = 3 mm, una vez durante la inundación en junio de 2017 y seco en enero 2018. Las muestras capturadas se anestesiaron con eugenol 15 mg · L-1, se fijaron formalina al 10% y se almacenaron etanol al 70% después de 10 días. Este estudio proporciona los parámetros LWR para las especies Anablepsoides micropus, Anchoviella jamesi, Cichlasoma amazonarum, Heros efasciatus, Ctenobrycon hauxwellianus, Copella nattereri y Hemigrammus levis. El parámetro a varió de 0.0092 a 0.0229, b varió de 2.78 a 3.50 y el R2 varió de 0.985 a 0.998. Los resultados representan nueva información sobre peces ornamentales de lagos de llanuras aluviales, con nuevos LWR para cinco especies que no están presentes en el conjunto de datos FishBase y probablemente son nuevos para la ciencia. Este estudio es preliminar y queda mucho trabajo por hacer, especialmente en las áreas de la llanura aluvial del río Solimões y con nuestra investigación esperamos alentar nuevos estudios en la región.

ABSTRACT This research reports the LWR of ornamental fish from floodplain lakes of the Solimões River basin. The fish were caught in the Paciência island (a fluvial island) in two lakes Sacambú and Cacau using purse seine 7 m × 4 m and mesh size = 3 mm, once during the flood in June 2017 and dry in January 2018. The specimens captured were anesthetized using eugenol 15 mg · L-1, fixed formalin 10% and stored ethanol 70% after 10 days. This study provides the LWR parameters for the species Anablepsoides micropus, Anchoviella jamesi, Cichlasoma amazonarum, Heros efasciatus, Ctenobrycon hauxwellianus, Copella nattereri and Hemigrammus levis. The parameter a ranged from 0.0092 to 0.0229, b ranged from 2.78 to 3.50 and the R 2 ranged from 0.985 to 0.998. The results represent new information about ornamental fish from floodplain lakes, with new LWR for five species that are not present in FishBase data set and probably are new for science. This study is preliminary and much work needs to be done especially in the Solimões River floodplain areas and with our research we hope to encourage new studies in the region.