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1.
Rev. bras. oftalmol ; 82: e0015, 2023. tab, graf
Article in English | LILACS | ID: biblio-1431667

ABSTRACT

ABSTRACT Objective: To evaluate if participants, subjected to whole-body vibration, two different types of media (paper versus tablet) and two lighting environments (fluorescent versus LED), present a difference in eye-movement parameters during reading tasks. Methods: Fourteen adults silently read two different texts in each one of the eight randomized testing conditions (whole-body vibration versus media versus lighting), resulting in 16 different texts read per individual. Whole-body vibration was applied in the vertical direction, 5Hz and 0.8 m/s2 root-mean-square amplitude, a condition similar to those experienced by forklift truck drivers. Participants were in a sitting position with a backrest. An eye-tracker evaluated the eye-movements during the reading task. Results: Whole-body vibration significantly reduced the number of ocular fixations, and cross-correlation; and increased the reading efficiency, fixation duration, directional attack, and binocular anomalies. Neither the type of media nor the lighting environment interfered significantly with the eye-movements, both in situations with and without vibration. Conclusion: The results indicate that whole-body vibration interfered in the eye-movements during the reading task. This may impose a difficulty to process the visual information and to synchronously coordinate the binocular movements under vibration environments.


RESUMO Objetivo: Avaliar se participantes submetidos à vibração de corpo inteiro, a dois tipos diferentes de mídia (papel versus tablet) e a dois ambientes de iluminação (fluorescente versus LED) apresentam diferença nos parâmetros de movimento dos olhos durante tarefas de leitura. Métodos: Quatorze adultos leram silenciosamente dois textos diferentes em cada uma das oito condições de teste (vibração de corpo inteiro versus mídia versus iluminação), de forma aleatória, resultando em 16 textos diferentes lidos por indivíduo. A vibração de corpo inteiro foi aplicada no sentido vertical, com amplitude de 5Hz e 0,8m/s² da raiz do valor quadrático médio, em condição semelhante às vivenciadas pelos motoristas de empilhadeiras. Os participantes permaneceram em postura sentada com encosto. Um rastreador ocular avaliou os movimentos oculares durante a leitura. Resultados: A vibração de corpo inteiro reduziu significativamente o número de fixações oculares e a correlação cruzada entre os olhos e aumentou a eficiência de leitura, duração da fixação, ataque direcional e anomalias binoculares. Nem o tipo de mídia nem as condições de ambientes de iluminação interferiram significativamente nos movimentos oculares, tanto em situações com ou sem vibração. Conclusão: Os resultados indicam que a Vibração de Corpo Inteiro pode interferir nos movimentos oculares durante a leitura. Isso pode impor uma dificuldade no processamento da informação visual e na coordenação síncrona dos movimentos binoculares em ambientes de vibração.


Subject(s)
Humans , Male , Female , Adult , Reading , Vibration , Lighting , Computers, Handheld , Eye Movements/physiology , Prospective Studies , Fixation, Ocular/physiology , Light
2.
Rev. bras. ecocardiogr. imagem cardiovasc ; 25(2): 119-121, abr.-jun. 2012. ilus
Article in Portuguese | LILACS | ID: lil-619142

ABSTRACT

Embolia coronariana é um evento raro. Neste trabalho, relatamos caso de pacientes, sexo masculino, de 64 anos, com um evento embólico coronariano associado a prolapso e rotura de valva mitral mixomatosa, situação essa extremamente incomum.


Subject(s)
Humans , Male , Middle Aged , Embolism/complications , Embolism/diagnosis , Atrial Fibrillation/complications , Mitral Valve Prolapse/complications , Mitral Valve Prolapse/diagnosis , Thrombosis/complications , Thrombosis/diagnosis
3.
Rev. CEFAC ; 8(3): 386-392, jul.-set. 2006. ilus, tab
Article in Portuguese | LILACS | ID: lil-440060

ABSTRACT

Objetivo: pesquisar o que existe na literatura sobre o efeito das Vibrações de Corpo Inteiro (VCI) naaudição dos trabalhadores expostos a esse risco, presente em muitos ambientes ocupacionais.Métodos: pesquisa bibliográfica em sites de busca de artigos e periódicos como Pubmed, PeriódicosCapes e Lilacs, além de consultas em bibliotecas. Resultados: estudos analisados apresentaram, deforma geral, grande concordância no que diz respeito ao efeito das VCI na audição. Pode-se afirmarque a VCI atua de forma sinérgica com o ruído, ou seja, potencializa os danos auditivos causados peloruído. Conclusões: a pesquisa envolvendo perdas auditivas ocupacionais é muito rica e deve ser maisaprofundada. A associação de riscos ocupacionais é muito comum e diversa. Combinações de ruídocom produtos químicos, vibrações ou calor se apresentaram danosas à audição segundo a literatura.Uma vez que na maioria dos postos de trabalho reais existe associação entre ruído e VCI (o objetivodeste trabalho), isto se torna um fato preocupante a ser pesquisado em maiores detalhes.


Purpose: to search articles and papers available in the literature and related to the effects of Whole-Body Vibration (WBV) on hearing of workers exposed to this occupational risk, present in severalworking environments. Methods: bibliographic review of the available literature using searching sitessuch as Pubmed, CAPES bibliographic website and Lilacs, besides searches on libraries. Results:The analyzed results show, in general, a great concordance regarding the effects of WBV on hearing.It can be affirmed that WBV acts synergistically with noise, in other words, it increases the auditorydamages caused by noise. Conclusions: the research involving occupational hearing loss is very richand should be better explored. The association between occupational risks is very wide and common.Combinations of noise with chemical products, vibration or heat are shown to be harmful to hearingaccording to the literature. Since most of the real working environments have an association betweennoise and WVB (the objective of this work), that makes a concerning fact to be studied in more detail.


Subject(s)
Occupational Diseases/etiology , Hearing Loss, Noise-Induced , Noise, Occupational/adverse effects , Vibration/adverse effects , Occupational Diseases/prevention & control , Occupational Risks , Risk Factors
4.
Arq. bras. cardiol ; 75(3): 215-24, set. 2000. tab, graf
Article in Portuguese, English | LILACS | ID: lil-274142

ABSTRACT

OBJECTIVE: To identifity characteristics associated with complications during pregnancy and puerperium in patients with rheumatic mitral stenosis. METHODS: Forty-one pregnant women (forty-five pregnancies) with mitral stenosis, followed-up from 1991 to 1999 were retrospectively evaluated. Predictor variables: the mitral valve area (MVA), measured by echocardiogram, and functional class (FC) before pregnancy (NYHA criteria).Maternal events: progression of heart failure, need for cardiac surgery or balloon mitral valvulotomy, death, and thromboembolism. Fetal/neonatal events: abortion, fetal or neonatal death, prematurity or low birth weight (<2,500g), and extended stay in the nursery or hospitalization in newborn ICU. RESULTS: The mean + or - SD of age of the patients was 28.8 + or - 4.6 years. The eventful and uneventful patients were similar in age and percentage of first pregnancies. As compared with the level 1 MVA, the relative risk (RR) of maternal events was 5.5 (95 per cent confidence interval (CI) =0.8-39.7) for level 2 MVA and 11.4 (95 per cent CI=1.7-74.5) for level 3 MVA. The prepregnancy FC (FC > or = II and III versus I) was also associated with a risk for maternal events (RR=2.7; 95 per cent CI=1.4-5.3).MVA and FC were not importantly associated with these events, although a smaller frequency of fetal/neonatal events was observed in patients who had undergone balloon valvulotomy. CONCLUSION: In pregnant women with mitral stenosis, the MVA and the FC are strongly associated with maternal complications but are not associated with fetal/neonatal events. Balloon mitral valvulotomy could have contributed to reducing the risks of fetal/neonatal events in the more symptomatic patients who had to undergo this procedure during pregnancy.


Subject(s)
Humans , Female , Pregnancy , Adult , Mitral Valve Stenosis/physiopathology , Postpartum Period , Pregnancy Complications, Cardiovascular/physiopathology , Rheumatic Heart Disease/physiopathology , Mitral Valve Stenosis/complications , Mitral Valve Stenosis/therapy , Pregnancy Complications/physiopathology , Prognosis , Retrospective Studies , Rheumatic Heart Disease/complications , Rheumatic Heart Disease/therapy , Risk Factors
5.
Arq. bras. cardiol ; 61(4): 213-216, out. 1993. ilus, graf
Article in Portuguese | LILACS | ID: lil-148867

ABSTRACT

PURPOSE--To present immediate results of percutaneous mitral valvuloplasty (PVM) with Inoue balloon for the treatment of mitral stenosis. METHODS--One hundred and twelve consecutive patients mean age 31.26 +/- 9.5 years, 82 per cent females, the majority in functional class III/IV (69 per cent ) underwent percutaneous mitral valvuloplasty (PVM) with Inoue balloon. The procedure was undertaken by the transseptal technique. RESULTS--PMV achieved significant reduction in mean left atrial pressure pre 24.57 +/- 5.37 post 12.36 +/- 4.82, mitral gradient pre 15.31 +/- 4.28 post 3.48 +/- 2.09 and increased mitral valve area pre 0.88 +/- 0.12 post 2.0 +/- 0.28 (P < 0.001). An increase of at least 25 per cent of the mitral valve area with a final result greater than 1.5 cm2 was obtained in 96 per cent of the cases. Cardiac tamponade occurred in five cases (4.4 per cent ). In 4 a successful treatment was accomplished in the catheterization laboratory. Significant mitral regurgitation was seen in one case (0.9 per cent ) and there was one death (0.9 per cent ). CONCLUSION--The results of this series attest to the effectiveness of the PMV with Inoue balloon in selected cases of mitral stenosis


Objetivo - Analisar os resultados imediatos em portadores de estenose da válvala mitral, submetidos a valvuloplastia com cateter-balão de Inoue. Métodos - Cento e doze pacientes consecutivos, com idade média de 31,26±9,5 anos, 82% do sexo feminino, a maioria em classe funcional III e IV (69%), foram submetidos a valvuloplastia mitral por balão (VMB). Os casos foram selecionados pelo escore ecocardiográfico proposto por Wilkins. O procedimento foi realizado por via transeptal segundo a técnica de Inoue. Resultados - Após VMB foi observada significativa redução da pressão média do átrio esquerdo pré 24,57±5,37/ pós 12,36±4,82, do gradiente transvalvar mitral pré 15,31±4,28/ pós 3,48±2,09 e aumento significativo da área valvar mitral (AVM) média pré 0,88±0,12/pós 2,0±0,28 (P<0,001). O sucesso definido como aumento pelo menos de 25% da AVM com resultado final maior que 1,5cm2 na ausência de insuficiência mitral significativa (3/4+), cirurgia de emergência ou óbito, foi alcançado em 96% dos casos. Como complicações, ocorreram 5 tamponamentos cardíacos (TC), 4 deles tratados na sala de hemodinâmica com sucesso; 1 paciente desenvolveu insuficiência mitral importante (3/4+), sendo operado eletivamente; ocorreu 1 óbito, devido a TC seguido de embolia pulmonar. Conclusão - Os resultados observados nesta série, comprovam a efetividade e segurança da técnica de valvuloplastia com cateter-balão Inoue, em casos selecionados de portadores de estenose mitra


Subject(s)
Humans , Male , Female , Child , Adolescent , Adult , Middle Aged , Catheterization , Mitral Valve Stenosis/therapy , Retrospective Studies , Treatment Outcome
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