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Antibiotic stewardship and nosocomial infection prevention in critically ill patients: a quality improvement program patients
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Custódio, Nayá Saad
; Machado, Luana Fernandes
; Luckemeyer, Graziela Denardin
; Syrio, Juliana Devós
; Frutuoso, Isabela Shumaher
; Chanes, Debora Augusto Valverde
; Kaltenbacher, Luciana Tirelli
; Braz, Melissa Maia
; Nogueira, Mara Correa Lelles
; Gandolfi, Joelma Villafanha
; Lobo, Suzana Margareth
.
Revista da Associação Médica Brasileira
- Métricas do periódico
SUMMARY OBJECTIVE: The objective of this study was to evaluate the impact of the implementation of a bundle of interventions through a "Program for Antibiotic Management and Nosocomial Infection Prevention" in the intensive care unit on antibiotic and devices use and healthcare-associated infections. METHODS: This was a quasi-experimental study of consecutive series of cases in periods before and after the establishment of protocols and checklists for the use of antibiotics as well as other measures to prevent healthcare-associated infection as part of a quality improvement program. Antimicrobial consumption was assessed by the defined daily dose. RESULTS: A total of 1,056 and 1,323 admissions in the pre-intervention and post-intervention phases, respectively, were evaluated. The defined daily dose per 100 patient-day decreased from 89±8 to 77±11 (p=0.100), with a decrease in carbapenems, glycopeptides, polymyxins, penicillins, and cephalosporins. The rates of ventilator and central venous catheter use decreased from 52.8 to 44.1% and from 76 to 70%, respectively. The rates of healthcare-associated infection decreased from 19.2 to 15.5%. CONCLUSION: Quality improvement actions focused primarily on antimicrobial management and prevention of healthcare-associated infection are feasible and have the potential to decrease antibiotic use and healthcare-associated infection rates. OBJECTIVE Program Prevention healthcareassociated healthcare associated infections METHODS quasiexperimental quasi experimental program RESULTS 1056 1 056 1,05 1323 323 1,32 preintervention pre intervention postintervention post phases respectively evaluated 10 patientday patient day 898 89 8 89± 7711 77 11 77±1 p=0.100, p0100 p p=0.100 , 0 (p=0.100) carbapenems glycopeptides polymyxins penicillins cephalosporins 528 52 52. 441 44 44.1 7 70 70% 192 19 2 19. 155 15 5 15.5% CONCLUSION 105 05 1,0 132 32 1,3 771 77± p010 p=0.10 (p=0.100 4 44. 15.5 1, 13 3 p01 p=0.1 (p=0.10 15. p0 p=0. (p=0.1 p=0 (p=0. p= (p=0 (p= (p
2.
Methylene blue as an adjuvant during cardiopulmonary resuscitation: an experimental study in rats resuscitation
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Xavier, Marcelo Souza
; Vane, Matheus F.
; Vieira, Roberta F.
; Oliveira, Cristiano C.
; Maia, Debora R.R.
; Castro, Leticia U.C. de
; Carmona, Maria José Carvalho
; Auler Jr., José Otávio Costa
; Otsuki, Denise Aya
.
Abstract Introduction: Methylene Blue (MB) has been shown to attenuate oxidative, inflammatory, myocardial, and neurological lesions during ischemia-reperfusion and has great potential during cardiac arrest. This study aimed to determine the effects of MB combined with epinephrine during cardiac arrest on myocardial and cerebral lesions. Method: Thirty-eight male Wistar rats were randomly assigned to four groups: the sham group (SH, n = 5), and three groups subjected to cardiac arrest (n = 11 /group) and treated with EPI 20 μg.kg−1 (EPI), EPI 20 μg.kg−1 + MB 2 mg.kg−1 (EPI + MB), or saline 0.9% 0.2 ml (CTL). Ventricular fibrillation was induced by direct electrical stimulation in the right ventricle for 3 minutes, and anoxia was maintained for 5 minutes. Cardiopulmonary Resuscitation (CPR) consisted of medications, ventilation, chest compressions, and defibrillation. After returning to spontaneous circulation, animals were observed for four hours. Blood gas, troponin, oxidative stress, histology, and TUNEL staining measurements were analyzed. Groups were compared using generalized estimating equations. Results: No differences in the Returning of Spontaneous Circulation (ROSC) rate were observed among the groups (EPI: 63%, EPI + MB: 45%, CTL: 40%, p = 0.672). The mean arterial pressure immediately after ROSC was higher in the EPI+MB group than in the CTRL group (CTL: 30.5 [5.8], EPI: 63 [25.5], EPI+MB: 123 [31] mmHg, p = 0.007). Serum troponin levels were high in the CTL group (CTL: 130.1 [333.8], EPI: 3.70 [36.0], EPI +MB: 43.7 [116.31] ng/mL, p < 0.05). Conclusion: The coadministration of MB and epinephrine failed to yield enhancements in cardiac or brain lesions in a rodent model of cardiac arrest. Introduction (MB inflammatory ischemiareperfusion ischemia reperfusion Method Thirtyeight Thirty eight SH, SH (SH 5, , 5) 1 /group μgkg1 μgkg μg kg μg.kg− EPI, (EPI) mgkg1 mgkg mg mg.kg− MB, MB) 09 0 9 0.9 02 0. CTL. . (CTL) minutes CPR (CPR medications ventilation compressions defibrillation circulation hours gas stress histology analyzed equations Results (ROSC 63% 45 45% 40 40% 0.672. 0672 0.672 672 0.672) EPIMB (CTL 305 30 30. 5.8, 58 5.8 8 [5.8] 6 25.5, 255 25.5 25 [25.5] 12 31 [31 mmHg 0.007. 0007 0.007 007 0.007) 1301 130 130. 333.8, 3338 333.8 333 [333.8] 370 70 3.7 36.0, 360 36.0 36 [36.0] +MB 437 43 7 43. 116.31 11631 116 [116.31 ngmL ng mL ng/mL 0.05. 005 0.05 05 0.05) Conclusion μg.kg mg.kg 4 067 0.67 67 5. [5.8 25. [25.5 [3 000 0.00 00 13 333. 33 [333.8 37 3. 36. [36.0 116.3 1163 [116.3 0.0 06 0.6 [5. [25. [ [333. [36. 116. [116. [5 [25 [333 [36 [116 [2 [33 [11 [1
3.
Sildenafil in endotoxin-induced pulmonary hypertension: an experimental study endotoxininduced endotoxin induced hypertension
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Kemper, Daniella Aparecida Godoi
; Otsuki, Denise Aya
; Maia, Débora Rothstein Ramos
; Mossoco, Cristina de Oliveira
; Marcasso, Rogério Anderson
; Cunha, Ligia Cristina Câmara
; Auler Jr., José Otávio Costa
; Fantoni, Denise Tabacchi
.
Abstract Background Sepsis and septic shock still represent great challenges in critical care medicine. Sildenafil has been largely used in the treatment of pulmonary arterial hypertension, but its effects in sepsis are unknown. The aim of this study was to investigate the hypothesis that sildenafil can attenuate endotoxin-induced pulmonary hypertension in a porcine model of endotoxemia. Methods Twenty pigs were randomly assigned to Control group (n = 10), which received saline solution; or to Sildenafil group (n = 10), which received sildenafil orally (100 mg). After 30 minutes, both groups were submitted to endotoxemia with intravenous bacterial lipopolysaccharide endotoxin (LPS) infusion (4 µg.kg-1.h-1) for 180 minutes. We evaluated hemodynamic and oxygenation functions, and also lung histology and plasma cytokine (TNFα, IL-1β, IL6, and IL10) and troponin I response. Results Significant hemodynamic alterations were observed after 30 minutes of LPS continuous infusion, mainly in pulmonary arterial pressure (from Baseline 19 ± 2 mmHg to LPS30 52 ± 4 mmHg, p< 0.05). There was also a significant decrease in PaO2/FiO2 (from Baseline 411 ± 29 to LPS180 334 ± 49, p< 0.05). Pulmonary arterial pressure was significantly lower in the Sildenafil group (35 ± 4 mmHg at LPS30, p< 0.05). The Sildenafil group also presented lower values of systemic arterial pressure. Sildenafil maintained oxygenation with higher PaO2/FiO2 and lower oxygen extraction rate than Control group but had no effect on intrapulmonary shunt. All cytokines and troponin increased after LPS infusion in both groups similarly. Conclusion Sildenafil attenuated endotoxin-induced pulmonary hypertension preserving the correct heart function without improving lung lesions or inflammation. medicine unknown endotoxininduced induced n 10, 10 , 10) solution 100 (10 mg. mg . mg) 3 (LPS ( µg.kg1.h1 µgkg1h1 µgkgh µg.kg 1.h 1 µg kg h µg.kg-1.h-1 18 functions TNFα, TNFα (TNFα IL1β, IL1β ILβ IL 1β, 1β β IL-1β IL6 IL10 response from LPS3 5 p 0.05. 005 0.05 0 05 0.05) PaO2FiO2 PaOFiO PaO2 FiO2 PaO FiO PaO2/FiO 41 LPS18 33 49 35 (3 shunt similarly inflammation (1 kg1 h1 µg.kg1.h µgkg µgkg1h 1h µg.kg-1.h- IL1 00 0.0 PaO2FiO LPS1 µg.kg-1.h 0.
4.
Development and validation of the Brazilian Version of Lay Persons’ Social Judgements about Cleft-lip Scale (B-LSojCleft-S) Persons Cleftlip Cleft lip BLSojCleftS B LSojCleft S (B-LSojCleft-S
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Maia, Ana Carolina Del-Sarto Azevedo
; Grimaldi, Débora Evelyn do Amaral
; Jural, Lucas Alves
; Lima, Stefanni Olga Aguiar Sales
; Magno, Marcela Baraúna
; Maia, Lucianne Cople
; Pithon, Matheus Melo
; Prado, Fabio Ornellas
.
Abstract The aim of this study was to develop and analyze the psychometric properties of the Brazilian Version of Lay Person's Social Judgement about Cleft-lip Scale (B-LSojCleft-S). A standardized photograph of a 16-year-old girl was manipulated by using photo editing software, to simulate different cleft-lip situations. The cleft-free image was used as a control. The researchers structured an initial questionnaire that was evaluated by experts and a sample of the target population to evaluate the construct. After analysis by the researchers, a final version of the B-LSojCleft-S containing 14 items was generated. Each answer was awarded score from 1 to 3 points, yielding a total score of 14 to 42 points. Higher scores represented better social judgements. The B-LSojCleft-S was applied online to 103 test participants and 73 retest participants with an interval of 20 days between application. Aspects of acceptability, discriminant property, internal consistency, reliability and construct validity were evaluated. Construct validity was assessed using the Friedman test (p < 0.05). Reliability was determined using an intraclass correlation coefficient > 0.70, and internal consistency using Cronbach's alpha > 0.81. The B-LSojCleft-S showed high acceptability, strong discriminant property, excellent internal consistency and reliability, but had a floor and ceiling effect. The instrument reached valid and reliable scores and had acceptable psychometric properties to evaluate the social judgments of lay persons about different cleft lip situations in a Brazilian population. Persons Person s Cleftlip Cleft BLSojCleftS. BLSojCleftS B LSojCleft S . (B-LSojCleft-S) 16yearold yearold 16 year old software cleftlip cleftfree free control generated points 4 judgements 10 7 2 application acceptability property p 0.05. 005 0.05 0 05 0.05) 070 70 0.70 Cronbachs Cronbach 081 81 0.81 effect (B-LSojCleft-S 00 0.0 07 0.7 08 8 0.8 0.
5.
Práticas de ressuscitação volêmica em unidades de terapia intensiva brasileiras: uma análise secundária do estudo Fluid-TRIPS
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Freitas, Flavio Geraldo Rezende de
; Hammond, Naomi
; Li, Yang
; Azevedo, Luciano Cesar Pontes de
; Cavalcanti, Alexandre Biasi
; Taniguchi, Leandro
; Gobatto, André
; Japiassú, André Miguel
; Bafi, Antonio Tonete
; Mazza, Bruno Franco
; Noritomi, Danilo Teixeira
; Dal-Pizzol, Felipe
; Bozza, Fernando
; Salluh, Jorge Ibrahin Figueira
; Westphal, Glauco Adrieno
; Soares, Márcio
; Assunção, Murillo Santucci César de
; Lisboa, Thiago
; Lobo, Suzana Margarete Ajeje
; Barbosa, Achilles Rohlfs
; Ventura, Adriana Fonseca
; Souza, Ailson Faria de
; Silva, Alexandre Francisco
; Toledo, Alexandre
; Reis, Aline
; Cembranel, Allan
; Rea Neto, Alvaro
; Gut, Ana Lúcia
; Justo, Ana Patricia Pierre
; Santos, Ana Paula
; Albuquerque, André Campos D. de
; Scazufka, André
; Rodrigues, Antonio Babo
; Fernandino, Bruno Bonaccorsi
; Silva, Bruno Goncalves
; Vidal, Bruno Sarno
; Pinheiro, Bruno Valle
; Pinto, Bruno Vilela Costa
; Feijo, Carlos Augusto Ramos
; Abreu Filho, Carlos de
; Bosso, Carlos Eduardo da Costa Nunes
; Moreira, Carlos Eduardo Nassif
; Ramos, Carlos Henrique Ferreira
; Tavares, Carmen
; Arantes, Cidamaiá
; Grion, Cintia
; Mendes, Ciro Leite
; Kmohan, Claudio
; Piras, Claudio
; Castro, Cristine Pilati Pileggi
; Lins, Cyntia
; Beraldo, Daniel
; Fontes, Daniel
; Boni, Daniela
; Castiglioni, Débora
; Paisani, Denise de Moraes
; Pedroso, Durval Ferreira Fonseca
; Mattos, Ederson Roberto
; Brito Sobrinho, Edgar de
; Troncoso, Edgar M. V.
; Rodrigues Filho, Edison Moraes
; Nogueira, Eduardo Enrico Ferrari
; Ferreira, Eduardo Leme
; Pacheco, Eduardo Souza
; Jodar, Euzebio
; Ferreira, Evandro L. A.
; Araujo, Fabiana Fernandes de
; Trevisol, Fabiana Schuelter
; Amorim, Fábio Ferreira
; Giannini, Fabio Poianas
; Santos, Fabrício Primitivo Matos
; Buarque, Fátima
; Lima, Felipe Gallego
; Costa, Fernando Antonio Alvares da
; Sad, Fernando Cesar dos Anjos
; Aranha, Fernando G.
; Ganem, Fernando
; Callil, Flavio
; Costa Filho, Francisco Flávio
; Dall´Arto, Frederico Toledo Campo
; Moreno, Geovani
; Friedman, Gilberto
; Moralez, Giulliana Martines
; Silva, Guilherme Abdalla da
; Costa, Guilherme
; Cavalcanti, Guilherme Silva
; Cavalcanti, Guilherme Silva
; Betônico, Gustavo Navarro
; Betônico, Gustavo Navarro
; Reis, Hélder
; Araujo, Helia Beatriz N.
; Hortiz Júnior, Helio Anjos
; Guimaraes, Helio Penna
; Urbano, Hugo
; Maia, Israel
; Santiago Filho, Ivan Lopes
; Farhat Júnior, Jamil
; Alvarez, Janu Rangel
; Passos, Joel Tavares
; Paranhos, Jorge Eduardo da Rocha
; Marques, José Aurelio
; Moreira Filho, José Gonçalves
; Andrade, Jose Neto
; Sobrinho, José Onofre de C
; Bezerra, Jose Terceiro de Paiva
; Alves, Juliana Apolônio
; Ferreira, Juliana
; Gomes, Jussara
; Sato, Karina Midori
; Gerent, Karine
; Teixeira, Kathia Margarida Costa
; Conde, Katia Aparecida Pessoa
; Martins, Laércia Ferreira
; Figueirêdo, Lanese
; Rezegue, Leila
; Tcherniacovsk, Leonardo
; Ferraz, Leone Oliveira
; Cavalcante, Liane
; Rabelo, Ligia
; Miilher, Lilian
; Garcia, Lisiane
; Tannous, Luana
; Hajjar, Ludhmila Abrahão
; Paciência, Luís Eduardo Miranda
; Cruz Neto, Luiz Monteiro da
; Bley, Macia Valeria
; Sousa, Marcelo Ferreira
; Puga, Marcelo Lourencini
; Romano, Marcelo Luz Pereira
; Nobrega, Marciano
; Arbex, Marcio
; Rodrigues, Márcio Leite
; Guerreiro, Márcio Osório
; Rocha, Marcone
; Alves, Maria Angela Pangoni
; Alves, Maria Angela Pangoni
; Rosa, Maria Doroti
; Dias, Mariza D’Agostino
; Martins, Miquéias
; Oliveira, Mirella de
; Moretti, Miriane Melo Silveira
; Matsui, Mirna
; Messender, Octavio
; Santarém, Orlando Luís de Andrade
; Silveira, Patricio Júnior Henrique da
; Vassallo, Paula Frizera
; Antoniazzi, Paulo
; Gottardo, Paulo César
; Correia, Paulo
; Ferreira, Paulo
; Torres, Paulo
; Silva, Pedro Gabrile M. de Barros e
; Foernges, Rafael
; Gomes, Rafael
; Moraes, Rafael
; Nonato filho, Raimundo
; Borba, Renato Luis
; Gomes, Renato V
; Cordioli, Ricardo
; Lima, Ricardo
; López, Ricardo Pérez
; Gargioni, Ricardo Rath de Oliveira
; Rosenblat, Richard
; Souza, Roberta Machado de
; Almeida, Roberto
; Narciso, Roberto Camargo
; Marco, Roberto
; waltrick, Roberto
; Biondi, Rodrigo
; Figueiredo, Rodrigo
; Dutra, Rodrigo Santana
; Batista, Roseane
; Felipe, Rouge
; Franco, Rubens Sergio da Silva
; Houly, Sandra
; Faria, Sara Socorro
; Pinto, Sergio Felix
; Luzzi, Sergio
; Sant’ana, Sergio
; Fernandes, Sergio Sonego
; Yamada, Sérgio
; Zajac, Sérgio
; Vaz, Sidiner Mesquita
; Bezerra, Silvia Aparecida Bezerra
; Farhat, Tatiana Bueno Tardivo
; Santos, Thiago Martins
; Smith, Tiago
; Silva, Ulysses V. A.
; Damasceno, Valnei Bento
; Nobre, Vandack
; Dantas, Vicente Cés de Souza
; Irineu, Vivian Menezes
; Bogado, Viviane
; Nedel, Wagner
; Campos Filho, Walther
; Dantas, Weidson
; Viana, William
; Oliveira Filho, Wilson de
; Delgadinho, Wilson Martins
; Finfer, Simon
; Machado, Flavia Ribeiro
.
Revista Brasileira de Terapia Intensiva
- Métricas do periódico
RESUMO Objetivo: Descrever as práticas de ressuscitação volêmica em unidades de terapia intensiva brasileiras e compará-las com as de outros países participantes do estudo Fluid-TRIPS. Métodos: Este foi um estudo observacional transversal, prospectivo e internacional, de uma amostra de conveniência de unidades de terapia intensiva de 27 países (inclusive o Brasil), com utilização da base de dados Fluid-TRIPS compilada em 2014. Descrevemos os padrões de ressuscitação volêmica utilizados no Brasil em comparação com os de outros países e identificamos os fatores associados com a escolha dos fluidos. Resultados: No dia do estudo, foram incluídos 3.214 pacientes do Brasil e 3.493 pacientes de outros países, dos quais, respectivamente, 16,1% e 26,8% (p < 0,001) receberam fluidos. A principal indicação para ressuscitação volêmica foi comprometimento da perfusão e/ou baixo débito cardíaco (Brasil 71,7% versus outros países 56,4%; p < 0,001). No Brasil, a percentagem de pacientes que receberam soluções cristaloides foi mais elevada (97,7% versus 76,8%; p < 0,001), e solução de cloreto de sódio a 0,9% foi o cristaloide mais comumente utilizado (62,5% versus 27,1%; p < 0,001). A análise multivariada sugeriu que os níveis de albumina se associaram com o uso tanto de cristaloides quanto de coloides, enquanto o tipo de prescritor dos fluidos se associou apenas com o uso de cristaloides. Conclusão: Nossos resultados sugerem que cristaloides são usados mais frequentemente do que coloides para ressuscitação no Brasil, e essa discrepância, em termos de frequências, é mais elevada do que em outros países. A solução de cloreto de sódio 0,9% foi o cristaloide mais frequentemente prescrito. Os níveis de albumina sérica e o tipo de prescritor de fluidos foram os fatores associados com a escolha de cristaloides ou coloides para a prescrição de fluidos.
Abstract Objective: To describe fluid resuscitation practices in Brazilian intensive care units and to compare them with those of other countries participating in the Fluid-TRIPS. Methods: This was a prospective, international, cross-sectional, observational study in a convenience sample of intensive care units in 27 countries (including Brazil) using the Fluid-TRIPS database compiled in 2014. We described the patterns of fluid resuscitation use in Brazil compared with those in other countries and identified the factors associated with fluid choice. Results: On the study day, 3,214 patients in Brazil and 3,493 patients in other countries were included, of whom 16.1% and 26.8% (p < 0.001) received fluids, respectively. The main indication for fluid resuscitation was impaired perfusion and/or low cardiac output (Brazil: 71.7% versus other countries: 56.4%, p < 0.001). In Brazil, the percentage of patients receiving crystalloid solutions was higher (97.7% versus 76.8%, p < 0.001), and 0.9% sodium chloride was the most commonly used crystalloid (62.5% versus 27.1%, p < 0.001). The multivariable analysis suggested that the albumin levels were associated with the use of both crystalloids and colloids, whereas the type of fluid prescriber was associated with crystalloid use only. Conclusion: Our results suggest that crystalloids are more frequently used than colloids for fluid resuscitation in Brazil, and this discrepancy in frequencies is higher than that in other countries. Sodium chloride (0.9%) was the crystalloid most commonly prescribed. Serum albumin levels and the type of fluid prescriber were the factors associated with the choice of crystalloids or colloids for fluid resuscitation.
https://doi.org/10.5935/0103-507x.20210028
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6.
Influência do consumo alimentar e da prática de atividade física na prevalência do sobrepeso/obesidade em adolescentes escolares
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Barbalho, Erika de Vasconcelos
; Pinto, Francisco José Maia
; Silva, Francisco Regis da
; Sampaio, Rafaella Maria Monteiro
; Dantas, Débora Sâmara Guimarães
.
Resumo Introdução A adolescência é definida pela Organização Mundial da Saúde como a faixa etária de 10 a 19 anos, pois é nessa fase em que são observadas diferentes mudanças. Objetivo Analisar a existência de associação entre sobrepeso/obesidade e fatores de risco em adolescentes escolares. Método Estudo transversal, conduzido nas escolas de nível médio, da rede pública estadual, na cidade de Sobral, no Ceará, com amostra de 572 jovens. Os dados foram coletados utilizando questionário semiestruturado, IPAQ e Marcadores do Consumo Alimentar SISVAN. Na análise não ajustada, utilizou-se da regressão de Poisson, pelo teste do Qui-quadrado, de Wald, com as variáveis que apresentaram nível descritivo p < 0,20, como critério de entrada, e, no modelo final, da regressão múltipla de Poisson, apenas com as variáveis significativas (p < 0,05). Resultados No modelo final, por meio da regressão múltipla de Poisson, configuraram-se estatisticamente significativas a idade do adolescente (p = 0,002; IC95% = 0,099; 0,591; RP = 4,54) e a ingestão inadequada de alimentos com alta densidade energética (p = 0,006; IC95% = 0,369; 0,848; RP = 1,79) como fatores de risco. Conclusão Os achados desta pesquisa indicaram que a idade jovem e o consumo inadequado de alimentos são fatores de risco para o desenvolvimento de sobrepeso/obesidade, comprovando sua natureza diversa e complexa.
Abstract Background adolescence is defined by the World Health Organization, as the age group of 10 to 19 years old, because it is there, when different changes are observed. Objective to analyze the existence of association between overweight/obesity and risk factors in school adolescents. Method this is a cross-study, which was performed in high schools belonging to the state public network, in the city of Sobral, Ceará, with a sample of 572 young students. Data were collected using a structured questionnaire, IPAQ, and SISVAN food consumption markers. In the unadjusted analysis, the Poisson regression was used, using the chi-square test of Wald with the variables presenting a descriptive level p<0.20 as input criterion, and in the final multiple regression model of Poisson, only the significant variables (p<0,05). Results in the final model, after performing Poisson multiple regression, adolescent age (p=0.002; CI 95%=0.099; 0.591; RP=4.54) and inappropriate consumption of food with high energy density (p=0.006; CI 95%=0.369; 0.848; RP=1.79) were configured statistically significant as risk factors. Conclusion The findings of this research indicated that both young age and inadequate food consumption are risk factors for the development of overweight / obesity. This finding proves that the development of overweight / obesity is diverse and complex.
https://doi.org/10.1590/1414-462x202028010181
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7.
Adhesiveness of bulk-fill composite resin in permanent molars submitted to Streptococcus mutans biofilm
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Fidalgo, Tatiana Kelly da Silva
; Americano, Gabriela
; Medina, Debora
; Athayde, Glaucia
; Letieri, Aline dos Santos
; Maia, Lucianne Cople
.
Abstract: The aim of the present study was to evaluate the microtensile bond strength and the microleakage of a bulk-fill composite resin compared with a conventional incremental composite resin, in permanent molars and under cariogenic challenge using a Streptococcus mutans model. Permanent human third molars (n = 60) with an occlusal cavity of 5×3×2 mm were randomly allocated into four subgroups of restorative treatments: conventional composite resin with (n = 15) and without (n = 15) cariogenic challenge (Z350-E and Z350-C experimental and control groups, respectively), and bulk-fill composite resin with (n = 15) and without (n = 15) cariogenic challenge (Bulk Fill-E and Bulk Fill-C, respectively). Ten specimens from each subgroup were submitted to microtensile strength, and 5, to microleakage. The cariogenic challenge was conducted using the Streptococcus mutans strain (ATCC) for 7 days. The stickers obtained (1 × 1 × 2 mm) were submitted to a microtensile strength test, followed by classification of the fracture mode. Microleakage was performed using a scoring system. The data were analyzed by Kruskal-Wallis and Mann-Whitney tests (p < 0.05). Filtek Z350 XT resin presented higher microtensile bond strength than Bulk Fill resin without (19.02 ± 4.90 and 8.76 ± 3.94MPa, respectively; p < 0.001) and with cariogenic challenge (22.69 ± 7.86 and 13.31 ± 3.38MPa, respectively; p < 0.02). Z350-C and Bulk Fill-C resins presented a higher prevalence of mixed fractures (23 and 14%, respectively) in the specimens submitted to cariogenic challenge than those of the control groups, whereas microleakage was similar (p = 0.85). The conventional composite resin had higher microtensile bond strength than the bulk-fill resin, but both resin types had similar adhesion quality and microfiltration scores.
https://doi.org/10.1590/1807-3107bor-2019.vol33.0111
955 downloads
8.
Acoustic analysis of prosody in Sydenham's chorea
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Oliveira, Patrícia M
; Cardoso, Francisco
; Maia, Débora P
; Cunningham, Mauro César Q
; Teixeira Jr, Antonio Lúcio
; Reis, César
.
Há poucos estudos sobre linguagem e fala em pacientes com coréia de Sydenham (CS). Fizemos uma análise acústica da freqüência fundamental (F0), duração e intensidade de sentenças declarativas e interrogativas feitas por 20 pacientes com CS, 20 pacientes com febre reumática (FR) sem coréia, comparando-os com 20 controles saudáveis e pareados por idade (CO). Cada grupo incluiu 12 mulheres. Foi encontrado que não há diferença entre os grupos FR e CO quanto a todos parâmetros estudados. Pacientes com CS, contudo, apresentaram-se com fala caracterizada pela redução da variação de F0 (diferença entre F0 mínima e máxima), duração mais curta das sentenças e maior intensidade da primeira sílaba das sentenças. Os achados não foram influenciados pela natureza das sentenças (i.e. , declarativas ou interrogativas), mas os achados foram mais evidentes em todas as variáveis em homens em contraste com mulheres. Em conclusão, demonstramos que pacientes com CS aguda têm prejuízo da modulação da F0 e duração mais longa da emissão de sentenças, resultando em fala mais lenta e monótona. Esse padrão é semelhante ao que tem sido descrito em outras fecções dos núcleos da base, tais como doença de Parkinson, doença de Huntington e doença de Wilson.
There are few studies of language and speech in patients with Sydenham's chorea (SC). We have done an acoustic analysis of fundamental frequency (F0), duration and intensity of declarative and interrogative sentences made by 20 SC patients, 20 patients with rheumatic fever (RF) without chorea, and compared them with 20 healthy age-matched controls (CO). Each group included 12 females. We found that there is no difference between the RF and CO groups in all studied parameters. Patients with SC, however, presented with a speech characterized by decreased F0 range (difference between minimum and maximum F0), shorter duration of sentences, and higher intensity of the first syllable of sentences. The findings were not influenced by the nature of the sentences (i.e. , declarative or interrogative), but for all variables they were significantly more severe in males than females. In conclusion, we have demonstrated that patients with acute SC have an impairment of modulation of F0 and longer duration of emission of sentences, resulting in a monotone and slow speech. This pattern is similar to what has been described in other basal ganglia illnesses, such as Parkinson's disease, Huntington's disease and Wilson's disease.
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