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Search Results: 1 - 10 of 71056 matches for " Maria Meimei Brevidelli "
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Fatores psicossociais e organizacionais na ades?o às precau??es-padr?o
Brevidelli,Maria Meimei; Cianciarullo,Tamara Iwanow;
Revista de Saúde Pública , 2009, DOI: 10.1590/S0034-89102009005000065
Abstract: objective: to analyze the influence of psychosocial and organizational factors relating to adherence to standard precautions for preventing exposure to biological material in hospitals. methods: a cross-sectional study was conducted among 270 medical and nursing professionals at a university hospital in the municipality of s?o paulo, southeastern brazil, in 2002. after selection by means of simple random sampling, the participants answered a questionnaire on psychosocial variables in the form of a likert scale. the construct validity was evaluated using factor analysis and the reliability, by means of cronbach's alpha coefficient. the association between psychosocial factors and adherence to standard precautions were obtained by means of multiple logistic regression analysis, with backward elimination of nonsignificant variables. results: the scales showed satisfactory validity and reliability (cronbach's alpha between 0.67 and 0.82). individual, work-related and organizational factors explained 38.5% of the overall rate of adherence to standard precautions. this overall rate of adherence was significantly associated with being a physician, receiving training in standard precautions at the hospital, downplaying the obstacles to following the standard precautions, taking the job more seriously, having feedback from safety practices and implementing managerial actions to support safety. conclusions: individual, work-related and organizational factors together influenced the adherence to standard precautions. programs for preventing occupational exposure to biological material need to take into account the obstacles to following standard precautions within clinical practice, and to emphasize organizational support policies for safety at work.
Aplica??o do modelo de cren?as em saúde na preven??o dos acidentes com agulha
Brevidelli,Maria Meimei; Cianciarullo,Tamara Iwanow;
Revista de Saúde Pública , 2001, DOI: 10.1590/S0034-89102001000200014
Abstract: objective: to prevent health care professionals from acquiring blood-borne diseases (aids, hepatitis b and c), it is recommended that needles should not be recapped. however, these professionals frequently do not comply with this recommendation. the main purpose of this study was to assess this problem by using the health belief model (hbm) to correlate the compliance with the recommendation of not recapping needles with: (1) these professionals' perceptions regarding one's susceptibility and severity to blood-borne infections; (2) their perceptions regarding the benefits and barriers to comply with this recommendation; and (3) the cues received to comply with this recommendation. methods: nursing staff at a hospital were asked: (1) how frequently they have recapped needles in the previous month; and (2) their hbm beliefs. to quantify and measure these beliefs, likert scales were created and went through a validation regarding their content (referees) and construct (exploratory factorial analysis) and their reliability analysis (correlation of two halves and cronbach's alpha coefficients). the relationship of beliefs and compliance with the recommendation of not recapping needles was obtained through regression analysis. results: a nursing staff sample was obtained through voluntary cooperation (n=319). in this group, 75% admitted recapping needles at least once. nursing professionals who most frequently follow the recommendation of not recapping needles have less than two years of professional experience and they are the group who perceive less barriers and more benefits to follow the recommendation. these results initiated a discussion on restructuring the professional training provided by the hospital.
Análise dos acidentes com agulhas em um hospital universitário: situa??es de ocorrência e tendências
Brevidelli, Maria Meimei;Cianciarullo, Tamara I.;
Revista Latino-Americana de Enfermagem , 2002, DOI: 10.1590/S0104-11692002000600005
Abstract: needlestick injuries remain the major source of risk of acquiring bloodborne diseases (aids, hepatitis b and c). therefore, it is a priority discussing strategies of intervention based in sources of risk. the purpose of this study was to analyze needlestick injuries occurred at a university hospital. a data base construction made possible to identify the situations in which those accidents occur and standards of tendencies along the years. the data pointed out that the majority of needlestick injuries occurred while performing or assisting procedures. the introduction of the first prevention measures (universal precautions) reduced the total number of needlestick injuries. however, changes in needlestick-injury rates related to the recapping were not observed. authors discussed the use of different prevention strategies: introduction of safety devices, changing the training focus, and the reorganization of the work environment and work practices.
Aplica o do modelo de cren as em saúde na preven o dos acidentes com agulha
Brevidelli Maria Meimei,Cianciarullo Tamara Iwanow
Revista de Saúde Pública , 2001,
Abstract: OBJETIVO: Para prevenir a aquisi o de infec es sangüíneas (Aids, hepatites B e C) por profissionais de saúde, recomenda-se n o reencapar agulhas. Entretanto, esses profissionais n o adotam essa recomenda o com freqüência. O objetivo do estudo foi aplicar o modelo de cren as em saúde (MCS) para explicar este problema, relacionando o comportamento individual às cren as de suscetibilidade, severidade, benefícios e barreiras, e aos estímulos recebidos para adotar a recomenda o. MéTODOS: Por meio de questionário respondido por profissionais de enfermagem de um hospital, foram identificados: a freqüência com que reencaparam agulhas (mês anterior) e as cren as do MCS. Para mensurar as cren as, foram construídas escalas tipo Likert, submetidas à valida o de conteúdo (juízes) e de constructo (análise fatorial exploratória) e à análise da confiabilidade (coeficientes alfa de Cronbach e de correla o de duas metades). A rela o entre cren as e ades o à recomenda o de n o reencapar agulhas foi obtida pela análise de regress o. RESULTADOS: Da amostra de profissionais de enfermagem obtida por ades o (n=319), cerca de 75% relataram reencapar agulhas pelo menos alguma vez. Os profissionais de enfermagem que aderiram mais freqüentemente à recomenda o de n o reencapar agulhas tinham menos de dois anos de experiência profissional, percebiam menor número de barreiras e maior número de benefícios para adotar a recomenda o. Esses resultados possibilitaram discutir a reformula o do treinamento oferecido pela institui o hospitalar.
Análise dos acidentes com agulhas em um hospital universitário: situa es de ocorrência e tendências
Brevidelli Maria Meimei,Cianciarullo Tamara I.
Revista Latino-Americana de Enfermagem , 2002,
Abstract: Os acidentes com agulhas constituem um dos principais riscos de transmiss o ocupacional de infec es por via sangüínea (AIDS, hepatite B e C). é prioritário, portanto, discutir estratégias de interven o baseadas nas fontes de risco. O objetivo deste estudo foi analisar os acidentes com agulhas ocorridos em um hospital universitário. A constru o de um banco dados dos acidentes notificados, entre 1990 e 1996, permitiu identificar as situa es de ocorrência e as tendências ao longo dos anos. Os resultados indicam que a maioria dos acidentes estava relacionada à realiza o ou auxílio de procedimentos. A implanta o das primeiras medidas preventivas (precau es universais) aponta para a redu o no total de acidentes com perfura es. N o foram observadas altera es nas taxas de acidentes relacionados à prática de reencapar agulhas. Discute-se o uso de diferentes estratégias de interven o: introdu o de materiais de design seguro; mudan a de enfoque no treinamento e reorganiza o do ambiente e das práticas de trabalho.
Compliance with standard-precautions among medical and nursing staff at a university hospital
Maria Meimei Brevidelli,Tamara Iwanow Cianciarullo
Online Brazilian Journal of Nursing , 2006,
Abstract: As a primary intervention to prevent occupational exposures to bloodborne pathogens, compliance with standard precautions (SP) is extremely important to management occupational risks. The purpose of this study was to analyse self-reported levels of compliance with standard precautions among physicians and nurses. A sample of medical and nursing staff at a university hospital was asked how frequently they used the recomendations of SP. A Likert scale was used. Data were analysed by averagind scores of each scale item. The recomendations itens about “manipulation and discard of sharps objects”, “washing hands after removing disposable gloves” and “using disposable gloves whenener there is a possibility of the contact with blood” raised high levels of compliance. The levels of compliance reported by nursing staff was significantly higher than medical staff to four SP recomendations. The findings offer evidence to involve physicians on organizacional tranning about standard precautions.
Clima de seguran a organizacional e a ades o às precau es padr o entre dentistas Organizational safety climate and adherence to standard precautions among dentists
Patrícia Helena Vivan Ribeiro,Maria Meimei Brevidelli,Anaclara Ferreira Veiga Tipple,Renata Perfeito Ribeiro
Acta Paulista de Enfermagem , 2013,
Abstract: OBJETIVO: Verificar a percep o do dentista a respeito do clima de seguran a no trabalho em rela o à ades o às precau es padr o. MéTODOS: Trata-se de um estudo quantitativo, transversal realizado através da aplica o da escala de Clima de Seguran a a uma popula o de 224 dentistas que atuavam em unidades de Aten o Básica de Saúde de seis municípios do Paraná. RESULTADOS: O escore total de 3,43 (DP=0,88) revela a baixa percep o dos dentistas a respeito do incentivo e apoio organizacional para ado o das PP. CONCLUS O: Clima de seguran a insatisfatório, onde a percep o do dentista sobre a seguran a de seu ambiente de trabalho é deficiente, evidenciando a es gerenciais de apoio à seguran a fragilizadas, falta de um programa de treinamento em saúde ocupacional e deficiência do feedback para favorecer a ado o de práticas seguras. OBJECTIVE: Check the perception of dentists about safety climate at work in relation to adherence to standard precautions. METHODS: It is a quantitative, cross-sectional study conducted through the application of the Safety Climate Scale to a population of 224 dentists who worked in units of primary health care in six municipalities of Paraná. RESULTS: The total score of 3.43 (SD = 0.88) reveals that dentists have a poor perception of the incentives and organizational support for adopting standard precautions. CONCLUSION: Unsatisfactory safety climate, where the perception of dentists about safety in their work environment is deficient, demonstrating fragile management actions of support to safety, lack of a training program in occupational health and deficient feedback to favor the adoption of safe practices.
Reasons for resubmission of research projects to the research ethics committee of a University Hospital in S?o Paulo, Brazil
Bueno, Mariana;Brevidelli, Maria Meimei;Cocarelli, Thaís;Santos, Gianni Mara Silva dos;Ferraz, Maria Auxiliadora;Mion Jr., Décio;
Clinics , 2009, DOI: 10.1590/S1807-59322009000900002
Abstract: introduction: it is important to know the reasons for resubmitting research projects to the research ethics committee in order to help researchers to prepare their research projects, informed consent forms and needed research documentation. objectives: to verify the reasons for resubmitting projects that were previously rejected by the ethics committee. method: this is a cross-sectional study that evaluated research projects involving human beings. research projects were submitted in 2007 to the research ethics committee of the hospital das clínicas, faculdade de medicina da universidade de s?o paulo. results: one thousand two hundred and fifty six research projects were submitted to the ethics committee and the average time for evaluating the research projects and related documents until a final decision was reached was 49.95 days. from the total, 399 projects were reviewed in 2 or more meetings until a final decision was reached. of these, 392 research projects were included in the study; 35 projects were subsequently excluded for involving animals. among the research projects included, 42.5% concerned research with new drugs, vaccines and diagnostic tests, 48.5% consisted of undergraduate students' research projects, 68.9% of the research had no sponsorship, and 97.5% were eventually approved. the main reasons for returning the projects to the researchers were the use of inadequate language and/or difficulty of understanding the informed consent form (32.2%), lack of information about the protocol at the informed consent form (25.8%), as well as doubts regarding methodological and statistical issues of the protocol (77.1%). other reasons for returning the research projects involved lack of, inaccuracy on or incomplete documentation, need of clarification or approval for participation of external entities on the research, lack of information on financial support. conclusion: among the research projects that were returned to the researchers for additional clarifica
Ades?o às precau??es-padr?o de profissionais de enfermagem de um hospital universitário
Malaguti-Toffano, Silmara Elaine;Santos, Cláudia Benedita dos;Canini, Silvia Rita Marin da Silva;Galv?o, Marli Terezinha Gimenes;Brevidelli, Maria Meimei;Gir, Elucir;
Acta Paulista de Enfermagem , 2012, DOI: 10.1590/S0103-21002012000300013
Abstract: objective: to describe and compare the scores of adherence to standard precautions (pp) by nursing professionals who worked in inpatient units of a university hospital in the state of s?o paulo (brazil). methods: this was a transversal, quantitative, comparative study, using a psychometric scale to measure adherence to pp, developed by gershon et al., (1995), translated and validated by brevidelli and cianciarullo (2009), that was conducted between september 1, 2009 and march 31, 2010, with 256 nursing professionals. results: findings indicated that 152 (59.4%) professionals presented higher mean scores for adherence to pp, equal to or greater than 4.5; 98 (38.3%) had intermediate scores between 3.5 and 4.49; and, six (2.3%) had low scores, i.e., below 3.5. conclusions: there was no statistically significant difference between the scores and other variables, however, results highlighted the importance of the positive result encountered due to the continuing education actions within the institution.
Stock Price Information Content, Idiosyncratic Volatility and Expected Return  [PDF]
Meimei Liang
Journal of Mathematical Finance (JMF) , 2015, DOI: 10.4236/jmf.2015.54034

How idiosyncratic risks are priced in capital asset is always concerned in the financial sector. This paper theoretically analyzes the impact of idiosyncratic volatility on the expected return from the perspective of stock price’s information content, and use Chinese A-share market data, from 1994 to 2013, to do the empirical test. It finds that, if other conditions remain unchanged, when the degree of stock price information content is low, idiosyncratic volatility and expected return are negatively correlated; when the degree of stock price information content is rich, idiosyncratic volatility and expected return are positively correlated. After taking the impact of different regression methods and time spans into consideration, the conclusions are still valid, which indicates that the conclusions are robust. The reason for the above phenomenon is that idiosyncratic volatility is mainly driven by noise or information, which has different impacts on expected return.

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