Your browser doesn't support javascript.
loading
Show: 20 | 50 | 100
Results 1 - 14 de 14
Filter
1.
Acta sci., Health sci ; 44: e57616, Jan. 14, 2022.
Article in English | LILACS | ID: biblio-1366131

ABSTRACT

This study evaluated the effect of contamination of composite resins (CRs) handled by undergraduate students during restorative procedures, varying the time (baseline, 30 days and 60 days) and experimental condition (before and after handling, contamination with saliva [positive control] and photoactivation). Eight CR tubes were randomly distributed at the dental clinic and the samples were organized into four groups: CR fragments collected before (GB) and after (GA) the restorative procedure; CR fragments contaminated with saliva (GS) and photoactivated (GP) both collected after the procedure. These 4 groups were evaluated in 3 different times: baseline (after sealing), 30 days and 60 days of use of the CR. Samples that had positive turbidity in Brain HeartInfusion (BHI) broth were sown in BHI and Sabouraud Dextrose (SB) agars for subsequent counting of Colony Forming Units (CFU mL-1). The results showed that the handling was responsible for increasing contamination (p < 0.05) at the baseline (GB [n = 0] and GA [n = 3]), as well as after 30 (GB [n = 1] and GA [n = 6]) and 60 (GB [n = 1] and GA [n = 5]) days of use. Photoactivation was responsible for the reduction for microorganisms in T0 and T60. Additionally, the time use and conservation did not influencethe contamination of CRs. Handling was responsible for the increase of contamination of CR, the photoactivation seems to reduce the number of viable microorganisms and the time of use seems not to potentiate the effect of tube contamination.


Subject(s)
Pollution Indicators , Composite Resins/analysis , Good Manipulation Practices , Light-Curing of Dental Adhesives/instrumentation , Students, Dental , Data Interpretation, Statistical , Environmental Restoration and Remediation , Food Preservatives/analysis , Microbiology/instrumentation
2.
ABCS health sci ; 44(2): 96-102, 11 out 2019. tab, graf
Article in English, Portuguese | LILACS | ID: biblio-1022342

ABSTRACT

INTRODUÇÃO: A automação laboratorial é cada vez mais utilizada em microbiologia, no entanto, poucos estudos avaliam desfechos clínicos em comparação aos métodos tradicionais. No Brasil, nenhum estudo com esse objetivo foi detectado. OBJETIVO: Analisar os impactos clínicos e microbiológicos após implantação de método fenotípico automatizado em um serviço de microbiologia. MÉTODOS: Realizamos estudo observacional e retrospectivo no laboratório de microbiologia referente a exame de hemocultura de pacientes da Unidade de Terapia Intensiva (UTI). Os dados foram coletados de pacientes internados entre janeiro/2014 a dezembro/2015. Analisou-se o tempo de internação, número de terapias empíricas, óbitos e dados relacionados ao isolamento microbiológico. A amostra foi obtida por conveniência. Para a comparação entre os desfechos foram empregados os testes t de Student e Qui-quadrado de Pearson. O programa empregado foi o Stata release, versão 11, sendo considerados significativos valores de p<0,05. RESULTADOS: Foram avaliados 472 pacientes. Não houve redução na prescrição empírica de antimicrobianos (54,7% vs 45,3%; p=0,33), tempo de internação na UTI (14,5 dias vs 15,8 dias p=0,78) e na taxa de óbitos (54,4% vs 45,6%; p=0,36). Similarmente, o perfil de agentes isolados em ambos os métodos não parece ser discrepante, no entanto, houve um aumento de 44,7% no número de isolados microbianos (76 vs 110) com melhor caracterização dos mesmos. CONCLUSÃO: A automação do laboratório de microbiologia não impactou no tempo de internação, mortalidade na UTI e no número de terapias empíricas. No entanto, a identificação e o isolamento de microrganismos melhoraram.


INTRODUCTION: Automation is increasingly used in microbiology laboratory, however, few studies assessed clinical outcomes compared to traditional methods. In Brazil, no studies with this objective were detected. OBJECTIVE: To analyze the clinical and microbiological impacts after implantation of an automated phenotypic method in a microbiology service. METHODS: Observational and retrospective study carried out on the microbiology laboratory involving blood culture test from intensive care unit (ICU) patients. Data were collected from hospitalized patients between January 2014 and December 2015. The length of hospitalization, number of empirical therapies, deaths and information related to microbiological isolation were analyzed. The sample was obtained by convenience. Pearson's Chisquare and Student's t-tests were used to compare outcomes. The program used was the Stata release, version 11, being considered significant values of p<0.05. RESULTS: A total of 472 patients were evaluated. There was no reduction in the empirical prescription of antimicrobials (54.7% vs 45.3%; p=0.33), ICU stay (14.5 days vs 15.8 days; p=0.78) and mortality (54.4% vs 45.6%; p=0.36). Similarly, profile of isolated agents in both methods did not appear to be discrepant, however, there was an increase of 44.7% in the number of microbial isolates (76 vs 110) and a better characterization of them. CONCLUSION: The microbiology laboratory automation did not modify the length of stay, ICU mortality and the number of empirical therapies. However, identification and isolation of microorganisms was improved.


Subject(s)
Humans , Male , Female , Adult , Middle Aged , Aged , Microbial Sensitivity Tests/instrumentation , Microbial Sensitivity Tests/methods , Automation, Laboratory/instrumentation , Automation, Laboratory/methods , Blood Culture/instrumentation , Blood Culture/methods , Microbiology/instrumentation
3.
Pesqui. vet. bras ; 33(8): 963-969, ago. 2013. ilus, tab
Article in English | LILACS | ID: lil-686070

ABSTRACT

The purpose of the study was to evaluate the real importance of anaerobic enteropathogens and rotavirus in contrast to more common agents as cause of diarrhea in piglets within the first week of life. Sixty 1- to 7-day-old piglets, 30 diarrheic and 30 non-diarrheic (control), from 15 different herds were selected, euthanized and necropsied. Samples of the jejunum, ileum, colon, cecum and feces were collected from the piglets and analyzed to determine the presence of the following enteropathogens: enterotoxigenic Escherichia coli (ETEC), Clostridium perfringens types A and C, Clostridium difficile, rotavirus and Isospora suis. Among diarrheic piglets, 23.3% were positive for C. difficile, 70% for C. perfringens type A cpb2+, 14.3% for rotavirus and 10% for ETEC. Among non-diarrheic control piglets, 10% were positive for C. difficile, 76.7% for C. perfringens type A cpb2+, 0% for rotavirus, 3.3% for ETEC and 3.3% for I. suis. C. perfringens type C was not detected in any of the animals. Histological lesions characteristic of C. difficile, E. coli and rotavirus were observed. However, no C. perfringens type A suggestive lesions were detected. There was a positive correlation between mesocolon edema and the presence of C. difficile toxins. Although C. perfringens type A cpb2+ was the most frequently detected enteropathogen, there was no association between its presence and diarrhea or macro or microscopic changes. C. difficile and Rotavirus were the most relevant pathogens involved with neonatal diarrhea in this study, and histopathology associated with microbiological test proved to be the key to reach a final diagnosis.


O objetivo do presente estudo foi avaliar a real importância de enteropatógenos anaeróbios e rotavirus em comparação à outros agentes mais comuns como causa de diarreia em leitões até cinco dias de idade. Leitões com 0 a 7 dias de vida, 30 diarreicos e 30 não diarreicos (controles) de 15 granjas diferentes foram eutanasiados e necropsiados. Amostras de jejuno, íleo, colon e ceco foram coletadas e submetidas à detecção dos seguintes enteropatógenos: Escherichia coli enterotoxigênica (ETEC), Clostridium perfringens, Clostridium difficile, rotavirus e Isospora suis. Entre os animais diarréicos, 23.3% foram positivos para C. difficile, 70% para C. perfringens tipo A cpb2+, 14.3% para rotavirus e 10% para ETEC. Entre os leitões não-diarréicos, 10% foram positivos para C. difficile, 76.7% para C. perfringens tipo A cpb2+, 3.3% para ETEC e 3.3% for I. suis. C. perfringens tipo C não foi detectado em nenhum animal. Lesões histológicas características de C. difficile, E. coli e rotavirus foram observadas. Por outro lado, nenhuma lesão sugestiva de C. perfringens foi detectada. Foi possível observar uma correlação positiva entre edema de mesocolon e presença das toxinas A/B. Apesar de C. perfringens tipo A cpb2+ ter sido o patógeno mais encontrado, nenhuma associação com lesões foi encontrada. C. difficile e Rotavirus foram os agentes mais relevantes associados à diarreia neonatal, e ficou demonstrada a relevância de associação de histopatologia com testes de detecção microbiológica para se firmar um diagnóstico.


Subject(s)
Animals , Clostridium perfringens/pathogenicity , Escherichia coli/pathogenicity , Rotavirus/pathogenicity , Microbiology/instrumentation , Swine/classification
4.
Porto Alegre; Armed; 10. ed; 2012. 934 p.
Monography in Portuguese | LILACS, ColecionaSUS | ID: biblio-939335
5.
Porto Alegre; Armed; 10 ed; 2012. 934 p.
Monography in Portuguese | LILACS | ID: lil-705512
6.
Porto Alegre; Artmed; 12. ed; 2010. 1160 p.
Monography in Portuguese | LILACS, ColecionaSUS | ID: biblio-941458
7.
8.
Article in English | IMSEAR | ID: sea-44804

ABSTRACT

OBJECTIVES: 1. To study the need of containers used in the diagnosis and prevention of infection. 2. To produce the containers, 3. To test the practicability of the product. MATERIAL AND METHOD: - The study on the need of the containers was done by questionnaires answered by nurses and microbiology laboratory technicians in 56 hospitals. - The containers were produced by the researchers who later had them tested for their practicability by nurses and technicians in the same hospitals. - The study was done during 2002-2004. RESULTS: Fifty-six hospitals were enrolled by stratified random sampling. Questionnaires were responded by 424 nurses and 35 microbiology laboratory technicians. Sputum trap, body fluid and feces containers and needle disposal box were studied and the need for commercial products was 31.1%, 31.1%, 32.3% and 99.5% respectively. Sixteen percent to 58.5% of these containers were bought and 14.3% to 68.6% were home-made. Sputum trap, body fluid and feces containers, and needle disposal boxes were produced and tested by 400 nurses and 32 laboratory technicians. The products were evaluated as satisfactory in 59.4% to 80.0%. The lid of the needle disposal box designed as saw tooth was not convenient for use and was later modified to various slits. The costs of the containers produced were 1.3% to 29.8% of available commercial products. CONCLUSION: Sputum trap, body fluid and feces containers and needle disposal boxes of reasonable prices were needed in Thailand. These containers could be produced locally and were much cheaper than available commercial ones.


Subject(s)
Containment of Biohazards/instrumentation , Humans , Infection Control/instrumentation , Laboratories, Hospital , Medical Waste Disposal/instrumentation , Microbiology/instrumentation , Needlestick Injuries/prevention & control , Surveys and Questionnaires , Specimen Handling/instrumentation , /instrumentation , Thailand
10.
Cuad. Hosp. Clín ; 46(1): 66-9, 2000.
Article in Spanish | LILACS | ID: lil-281214

ABSTRACT

El INTERNET ahora es la mayor fuente de informacón en salud. Se registraron divestos sitios médicos en internet en español, ingles, frances y se presentan listas de direcciones URLs que se incolucran todas las areas de la salud, particularmente: Microbiologia, Parasitología y Ciencias Médicas. Estos sitios médicos en INTERNET proporcionan información alternativa en salud humana, particularmente para docentes, estudiantes en los niveles de pre y potgrado


Subject(s)
Parasitology , Internet/instrumentation , Microbiology/instrumentation , Microbiology , Bolivia
11.
Arq. bras. oftalmol ; 62(6): 751-3, nov.-dez. 1999. ilus
Article in Portuguese | LILACS | ID: lil-279962

ABSTRACT

Os autores descrevem um novo métodopara produzir um instrumento para colheita de material de córnea. Tal instrumento pode ser manufaturado com uma cânula ou agulha fina. O material é moldado de forma plana como auxílio de laminador, ou de um martelo e placa de metal. Lixa fina é utilizada para arredondar as bordas e a ponta é ligeiramente dobrada. Um cabo pode ser adicionado de modo a facilitar a manipulaçäo do instrumento, que pode ser reutilizado após lavagem e esterilizaçäo local na pontal do metal, ou por óxido de etileno


Subject(s)
Cornea , Electronics, Medical/instrumentation , Microbiology/instrumentation
12.
J. bras. patol ; 34(1): 17-23, jan.-mar. 1998. tab
Article in Portuguese | LILACS | ID: lil-229638

ABSTRACT

Uma nova metodologia para a identificaçäo de bacilos Gram-negativos de importância médica, denominada Crystal Enteric/Nonfermenter Identification System (Becton & Dickinson Microbiology Systems, EUA), foi avalida comparativamente com o sistema automatizado Vitek (bioMérieux Vitek, EUA). Duzentas e quarenta e nove amostras bacterianas isoladas a partir de diversos materiais clínicos e pertencentes a diversas espécies bacterianas da família Enterobacteriaceae (189 amostras) e também ao grupo dos bacilos Gram-negativos näo-fermentadores da glicose (60 amostras), previamente identificadas por provas bioquímicas tradicionais, foram aalisadas no intuito de se avaliar a especificidade destas duas metodologias. Duzentas e vinte e cinco amostras bacterianas (90,4 por cento) foram corretamente identificadas pelo sistema Crystal e 230 amostras (92,4 por cento) foram corretamente identificadas pelo sistema Vitek. Em relaçäo aos bacilos Gram-negativos näo-fermentadores da glicose, dentre as 60 amostras bacterianas estudadas, 51 (85 por cento) foram corretamente identificadas pelo sistema Crystal e 50 (83,3 por cento) foram corretamente identifcadas pelo sistema Vitek. Do total de amostras estudadas, 14 (5,6 por cento) näo foram identificadas e cinco (2 por cento) foram incorretamente identificadas pelo sistema Crystal, enquanto que o sistema Vitek näo identificou cinco amostras (2 por cento) e identidicou incorretamente nove amostras (3,6 por cento). Os resultados obtidos demonstraram que o sistema Crystal é uma metodlogia confiável, simples de usar, näo necessitando equipamentos automatizados ou reagentes especiais, podendo ser adequadamente utilizada por laboratórios de Microbiologia para a identificaçäo de diversas espécies de bacilos Gram-negativos de importância clínica


Subject(s)
Gram-Negative Bacteria/isolation & purification , Enterobacteriaceae/isolation & purification , Reagent Kits, Diagnostic , Bacteriological Techniques/instrumentation , Microbiology/instrumentation
13.
Santos; Tecpress; 1993. 173 p.
Monography in Portuguese | LILACS, HANSEN, HANSENIASE, SESSP-ILSLACERVO, SES-SP | ID: biblio-1083615
14.
Indian J Exp Biol ; 1966 Jul; 4(3): 189-90
Article in English | IMSEAR | ID: sea-62057
SELECTION OF CITATIONS
SEARCH DETAIL