Associated factors of professional burnout among faculty members of graduate stricto sensu programs in language teaching and linguistics: a cross-sectional study

Abstract BACKGROUND: The burnout syndrome can be avoided and/or have its signs and symptoms reduced by knowing the five associated factors that help identify the health and working conditions of the professors of graduate programs. OBJECTIVE: To analyze the factors associated with burnout among faculty members of graduate stricto sensu programs. DESIGN AND SETTING: A cross-sectional study was conducted among 585 faculty members of Graduate Programs in Language Teaching and Linguistics in Brazil. METHODS: Data were collected through an online questionnaire. The outcomes were the dimensions of burnout and its related factors identified through multiple templates of logistic regression. RESULTS: Faculty members with increased chances of emotional exhaustion and depersonalization mentioned the use of medications due to labor activities. The negative influence of pace and intensity of work, thoughts about quitting the program, and having to produce three or more scientific articles were associated with higher chances of emotional exhaustion, while having to achieve nine hours per week in undergraduate programs was related to reduced personal accomplishment. Having a conjugal relationship, satisfaction with health and work, post-doctoral degree, autonomy, and good interpersonal relationships with faculty members of the program reduced the chances of emotional exhaustion. Reduced chances of depersonalization occurred among those who were satisfied with work, had good interpersonal relationships with advisees and faculty members, and received productivity funding. CONCLUSION: Sociodemographic, health, and occupational factors related to the dimensions of burnout were identified.

Bioprosthetic Aortic Valve Degeneration: a Review from a Basic Science Perspective

Abstract Introduction: The increase in the prevalence of aortic stenosis due to an aging population has led to an increasing number of surgical aortic valve replacements. Over the past 20 years, there has been a major shift in preference from mechanical to bioprosthetic valves. However, despite efforts, there is still no "ideal" bioprosthesis. It is crucial to understand the structure, biology, and function of native heart valves to design more intelligent, strong, durable, and physiological heart valve tissues. Methods: A comprehensive review of the literature was performed to identify articles reporting the basic mechanisms of bioprosthetic valve dysfunction and the biology of native valve cells. Searches were run in PubMed, MEDLINE® (the Medical Literature Analysis and Retrieval System Online), and Google Scholar. Terms for subject heading and keywords search included "biological heart valve dysfunction", "bioprosthesis dysfunction", "bioprosthesis degeneration", and "tissue heart valves". Results: All the relevant findings are summarized in the appropriate subsections. Structural dysfunction is a logical and expected consequence of the chemical, mechanical, and immunological processes that occur during fixation, manufacture, and implantation. Conclusion: Biological prosthesis valve dysfunction is a clinically significant process. It has become a major issue considering the growing rate of bioprosthesis implantation and improved long-term patient survival. Understanding bioprosthetic aortic valve degeneration from a basic science perspective is a key point to improve technologic advances and specifications that lead to a new generation of bioprostheses.

Workaholism and burnout among stricto sensu graduate professors / Workaholism e burnout entre docentes de pós-graduação stricto sensu

ABSTRACT OBJECTIVE To analyze the association of excessive work and compulsive work with the dimensions of the burnout syndrome in masters and doctoral professors of Languages, Literature, and Linguistics in Brazil. METHODS Cross-sectional study carried out with 585 permanent professors of stricto sensu graduate studies in Languages, Literature, and Linguistics in Brazil. Data collection took place between February and August 2019, by an online questionnaire. The outcomes of this study were the compulsive work and excessive work dimensions of the Dutch Work Addiction Scale, the Maslach Burnout Inventory TM dimensions and their associated factors, identified by multiple logistic regression models. RESULTS Professors with a high level of excessive work (29.40%) had 2.75 times the chance of high emotional exhaustion and 2.08 times the chance of high depersonalization. Regarding professors with a high level of compulsive work (8.03%), they had 4.88 times the chance of high emotional exhaustion and 2.97 times the chance of high depersonalization. No association of excessive work and compulsive work with low professional fulfillment was identified. CONCLUSION The results showed a statistically significant association of excessive work and compulsive work with high emotional exhaustion and high depersonalization, allowing managers and professors to reflect the criteria that guide their work processes, to adopt management models, institutional regulatory policies, and strategies to improve the working conditions and health of professors.

RESUMO OBJETIVO Analisar a associação entre trabalho excessivo e trabalho compulsivo com as dimensões da síndrome de burnout em docentes de mestrado e doutorado em Letras e Linguística do Brasil. MÉTODOS Estudo transversal realizado com 585 docentes permanentes de pós-graduação stricto sensu em Letras e Linguística do Brasil. A obtenção dos dados ocorreu entre fevereiro e agosto de 2019, por meio de um questionário online. Os desfechos deste estudo foram as dimensões trabalho compulsivo e trabalho excessivo da escala Dutch Work Addiction Scale, as dimensões da Maslach Burnout Inventory TM e seus fatores associados, identificados por modelos múltiplos de regressão logística. RESULTADOS Docentes com alto nível de trabalho excessivo (29,40%) apresentaram 2,75 vezes a chance de exaustão emocional alta e 2,08 vezes a chance de despersonalização alta. Quanto aos docentes com alto nível de trabalho compulsivo (8,03%), apresentaram 4,88 vezes a chance de exaustão emocional alta e 2,97 vezes a chance de despersonalização alta. Não foi identificado associação entre trabalho excessivo e trabalho compulsivo com a baixa realização profissional. CONCLUSÃO Os resultados mostraram que existe uma associação estatisticamente significativa entre trabalho excessivo e trabalho compulsivo com exaustão emocional alta e despersonalização alta, possibilitando aos gestores e docentes refletirem os critérios que norteiam seus processos laborais, a fim de adotarem modelos de gestão, políticas reguladoras institucionais e estratégias adequadas para melhorar as condições de trabalho e saúde dos docentes.

Comparative venomic profiles of three spiders of the genus Phoneutria

Spider venoms induce different physio-pharmacological effects by binding with high affinity on molecular targets, therefore being of biotechnological interest. Some of these toxins, acting on different types of ion channels, have been identified in the venom of spiders of the genus Phoneutria, mainly from P. nigriventer. In spite of the pharmaceutical potential demonstrated by P. nigriventer toxins, there is limited information on molecules from venoms of the same genus, as their toxins remain poorly characterized. Understanding this diversity and clarifying the differences in the mechanisms of action of spider toxins is of great importance for establishing their true biotechnological potential. This prompted us to compare three different venoms of the Phoneutria genus: P. nigriventer (Pn-V), P. eickstedtae (Pe-V) and P. pertyi (Pp-V). Methods: Biochemical and functional comparison of the venoms were carried out by SDS-PAGE, HPLC, mass spectrometry, enzymatic activities and electrophysiological assays (whole-cell patch clamp). Results: The employed approach revealed that all three venoms had an overall similarity in their components, with only minor differences. The presence of a high number of similar proteins was evident, particularly toxins in the mass range of ~6.0 kDa. Hyaluronidase and proteolytic activities were detected in all venoms, in addition to isoforms of the toxins Tx1 and Tx2-6. All Tx1 isoforms blocked Nav1.6 ion currents, with slight differences. Conclusion: Our findings showed that Pn-V, Pe-V and Pp-V are highly similar concerning protein composition and enzymatic activities, containing isoforms of the same toxins sharing high sequence homology, with minor modifications. However, these structural and functional variations are very important for venom diversity. In addition, our findings will contribute to the comprehension of the molecular diversity of the venoms of the other species from Phoneutria genus, exposing their biotechnological potential as a source for searching for new active molecules.(AU)

Comparative venomic profiles of three spiders of the genus Phoneutria

Abstract Background: Spider venoms induce different physio-pharmacological effects by binding with high affinity on molecular targets, therefore being of biotechnological interest. Some of these toxins, acting on different types of ion channels, have been identified in the venom of spiders of the genus Phoneutria, mainly from P. nigriventer. In spite of the pharmaceutical potential demonstrated by P. nigriventer toxins, there is limited information on molecules from venoms of the same genus, as their toxins remain poorly characterized. Understanding this diversity and clarifying the differences in the mechanisms of action of spider toxins is of great importance for establishing their true biotechnological potential. This prompted us to compare three different venoms of the Phoneutria genus: P. nigriventer (Pn-V), P. eickstedtae (Pe-V) and P. pertyi (Pp-V). Methods: Biochemical and functional comparison of the venoms were carried out by SDS-PAGE, HPLC, mass spectrometry, enzymatic activities and electrophysiological assays (whole-cell patch clamp). Results: The employed approach revealed that all three venoms had an overall similarity in their components, with only minor differences. The presence of a high number of similar proteins was evident, particularly toxins in the mass range of ~6.0 kDa. Hyaluronidase and proteolytic activities were detected in all venoms, in addition to isoforms of the toxins Tx1 and Tx2-6. All Tx1 isoforms blocked Nav1.6 ion currents, with slight differences. Conclusion: Our findings showed that Pn-V, Pe-V and Pp-V are highly similar concerning protein composition and enzymatic activities, containing isoforms of the same toxins sharing high sequence homology, with minor modifications. However, these structural and functional variations are very important for venom diversity. In addition, our findings will contribute to the comprehension of the molecular diversity of the venoms of the other species from Phoneutria genus, exposing their biotechnological potential as a source for searching for new active molecules.

Transfusion of ABO non-identical platelets increases the severity of trauma patients at ICU admission

ABSTRACT Background: Transfusion of ABO-compatible non-identical platelets (PTLs), fresh plasma (FP) and red blood cells (RBCs) has been associated with increased morbidity and mortality of recipients. Trauma victims are frequently exposed to ABO non-identical products, given the need for emergency transfusions. Our goal was to evaluate the impact of the transfusion of ABO non-identical blood products on the severity and all-cause 30-day mortality of trauma patients. Methods: This was a retrospective single-center cohort, which included trauma patients who received emergency transfusions in the first 24 h of hospitalization. Patients were divided in two groups according to the use of <3 or ≥3 ABO non-identical blood products. The patient severity, measured by the Acute Physiology and Chronic Health Evaluation (APACHEII) score at ICU admission, and the 30-day mortality were compared between groups. Results: Two hundred and sixteen trauma patients were enrolled. Of these, 21.3% received ≥3 ABO non-identical blood products (RBCs, PLTs and FP or cryoprecipitate). The transfusion of ≥3 ABO non-identical blood products in the first 24 h of hospitalization was independently associated with a higher APACHEII score at ICU admission (OR = 3.28 and CI95% = 1.48-7.16). Transfusion of at least one unit of ABO non-identical PTLs was also associated with severity (OR = 10.89 and CI95% = 3.38-38.49). Transfusion of ABO non-identical blood products was not associated with a higher 30-day mortality in the studied cohort. Conclusion: The transfusion of ABO non-identical blood products and, especially, of ABO non-identical PLTs may be associated with the greater severity of trauma patients at ICU admission. The transfusion of ABO non-identical blood products in the trauma setting is not without risks.

The patient profile of individuals with Alpha-1 antitrypsine gene mutations at a referral center in Brazil / Perfil dos pacientes com mutação no gene da alfa-1 antitripsina em um centro de referência no Brasil

ABSTRACT Objective: The clinical, functional, radiological and genotypic descriptions of patients with an alpha-1 antitrypsin (A1AT) gene mutation in a referral center for COPD in Brazil. Methods: A cross-sectional study of patients with an A1AT gene mutation compatible with deficiency. We evaluated the A1AT dosage and genotypic, demographic, clinical, tomographic, and functional characteristics of these patients. Results: Among the 43 patients suspected of A1AT deficiency (A1ATD), the disease was confirmed by genotyping in 27 of them. The A1AT median dosage was 45 mg/dL, and 4 patients (15%) had a normal dosage. Median age was 54, 63% of the patients were male, and the respiratory symptoms started at the age of 40. The median FEV1 was 1.37L (43% predicted). Tomographic emphysema was found in 77.8% of the individuals. The emphysema was panlobular in 76% of them and 48% had lower lobe predominance. The frequency of bronchiectasis was 52% and the frequency of bronchial thickening was 81.5%. The most common genotype was Pi*ZZ in 40.7% of participants. The other genotypes found were: Pi*SZ (18.5%), PiM1Z (14.8%), Pi*M1S (7.4%), Pi*M2Z (3.7%), Pi*M1I (3.7%), Pi*ZMnichinan (3.7%), Pi*M3Plowell (3.7%), and Pi*SF (3.7%). We did not find any significant difference in age, smoking load, FEV1, or the presence of bronchiectasis between the groups with a normal and a reduced A1AT dosage, neither for 1 nor 2-allele mutation for A1ATD. Conclusions: Our patients presented a high frequency of emphysema, bronchiectasis and bronchial thickening, and early-beginning respiratory symptoms. The most frequent genotype was Pi*ZZ. Heterozygous genotypes and normal levels of A1AT also manifested significant lung disease.

RESUMO Objetivo: Caracterização clínica, funcional, radiológica e genotípica dos pacientes portadores de mutações do gene da alfa-1 antitripsina (A1AT) em um centro de referência em doença pulmonar obstrutiva crônica (DPOC) no Brasil. Métodos: Estudo transversal de pacientes com mutação no gene da A1AT compatível com deficiência. Foram avaliadas características genotípicas, demográficas, clínicas, tomográficas, de função pulmonar, e dosagem de A1AT. Resultados: De 43 pacientes suspeitos para deficiência de alfa-1 antitripsina (DA1AT), a doença foi confirmada por genotipagem em 27. A mediana da dosagem de A1AT foi de 45 mg/dL, e 4 pacientes (15%) apresentavam dosagens normais. A idade mediana foi de 54 anos, 63% dos participantes eram do sexo masculino e a idade do início dos sintomas prevalente foi aos 40 anos. A mediana do volume expiratório forçado no primeiro segundo (VEF1) foi de 1,37 L (43% do previsto). Enfisema tomográfico foi encontrado em 77,8% dos indivíduos, sendo panlobular em 76% e de predomínio em lobos inferiores em 48%. A frequência de bronquiectasias foi de 52%, e a de espessamento brônquico, de 81,5%. O genótipo mais encontrado foi Pi*ZZ (40,7%). Os demais genótipos foram: Pi*SZ (18,5%), Pi*M1Z (14,8%), Pi*M1S (7,4%), Pi*M2Z (3,7%), Pi*M1I (3,7%), Pi*ZMnichinan (3,7%), Pi*M3Plowell (3,7%) e Pi*SF (3,7%). Não encontramos diferença significativa para idade, carga tabágica, VEF1 e presença de bronquiectasias entre os grupos com dosagem de A1AT normal versus alterada, nem entre 1 alelo versus 2 alelos com mutação para DA1AT. Conclusões: Nossos pacientes apresentaram alta frequência de enfisema, bronquiectasias e espessamento brônquico, com início precoce dos sintomas respiratórios. O genótipo mais frequente foi Pi*ZZ, embora genótipos heterozigotos e níveis normais de A1AT também tenham se manifestado com doença pulmonar significativa.

Spirometry in patients screened for coronary artery disease: is it useful? / Espirometria em pacientes submetidos a investigação para detecção de doença arterial coronariana: é útil?

ABSTRACT Objective: To determine the prevalence of spirometric abnormalities in patients screened for coronary artery disease (CAD) and the risk factors for lung function impairment. Methods: Patients referred for cardiac CT underwent spirometry and were subsequently divided into two groups, namely normal lung function and abnormal lung function. The prevalence of spirometric abnormalities was calculated for the following subgroups of patients: smokers, patients with metabolic syndrome, elderly patients, and patients with obstructive coronary lesions. All groups and subgroups were compared in terms of the coronary artery calcium score and the Duke CAD severity index. Results: A total of 205 patients completed the study. Of those, 147 (72%) had normal lung function and 58 (28%) had abnormal lung function. The median coronary artery calcium score was 1 for the patients with normal lung function and 36 for those with abnormal lung function (p = 0.01). The mean Duke CAD severity index was 15 for the former and 27 for the latter (p < 0.01). Being a smoker was associated with the highest OR for abnormal lung function, followed by being over 65 years of age and having obstructive coronary lesions. Conclusions: The prevalence of spirometric abnormalities appears to be high in patients undergoing cardiac CT for CAD screening. Smokers, elderly individuals, and patients with CAD are at an increased risk of lung function abnormalities and therefore should undergo spirometry. (ClinicalTrials.gov identifier: NCT01734629 [http://www.clinicaltrials.gov/])

RESUMO Objetivo: Determinar a prevalência de alterações espirométricas em pacientes submetidos a investigação para detecção de doença arterial coronariana (DAC) e os fatores de risco de comprometimento da função pulmonar. Métodos: Pacientes encaminhados para TC cardíaca foram submetidos a espirometria e, em seguida, divididos em dois grupos: função pulmonar normal e função pulmonar anormal. A prevalência de alterações espirométricas foi calculada em fumantes, pacientes com síndrome metabólica, idosos e portadores de lesões coronárias obstrutivas. Os grupos e subgrupos foram comparados quanto ao escore de cálcio coronariano e ao índice de gravidade de DAC de Duke. Resultados: Completaram o estudo 205 pacientes. Destes, 147 (72%) apresentaram função pulmonar normal e 58 (28%) apresentaram função pulmonar anormal. A mediana do escore de cálcio coronariano foi 1 nos pacientes com função pulmonar normal e 36 naqueles com função pulmonar anormal (p = 0,01). A média do índice de gravidade de DAC de Duke foi = 15 nos pacientes com função pulmonar normal e 27 nos pacientes com função pulmonar anormal (p < 0,01). O tabagismo apresentou a maior OR de função pulmonar anormal, seguido de idade > 65 anos e lesões coronarianas obstrutivas. Conclusões: A prevalência de alterações espirométricas parece ser alta em pacientes submetidos a TC cardíaca para detecção de DAC. O risco de função pulmonar anormal é maior em fumantes, idosos e pacientes com DAC, os quais, portanto, devem ser submetidos a espirometria. (ClinicalTrials.gov identifier: NCT01734629 [http://www.clinicaltrials.gov/])

Longitudinal study of lung function in pregnant women: Influence of parity and smoking

OBJECTIVES: To evaluate pulmonary function in the first and third trimesters of pregnancy and analyze the influence of parity and smoking on spirometry parameters. METHODS: This longitudinal prospective study included a cohort of 120 pregnant women. The inclusion criteria were as follows: singleton pregnancy, gestational age less than 13.86 weeks, and no preexisting maternal diseases. The exclusion criteria were as follows: change of address, abortion, and inadequate spirometry testing. ClinicalTrials.gov: NCT02807038. RESULTS: A decrease in values of forced vital capacity and forced expiratory volume were noted in the first second from the first to third trimester. In the first and third trimesters, multiparous women demonstrated lower absolute forced vital capacity and forced expiratory volume values in the first second compared with nulliparous women (p<0.0001 and p=0.001, respectively). Multiparous women demonstrated reduced forced expiratory flow in 25% to 75% of the maneuver compared with nulliparous women in the first (p=0.005) and third (p=0.031) trimesters. The absolute values of forced expiratory flow in 25% to 75%, forced expiratory volume in the first second and predicted peak expiratory flow values in the third trimester were higher in smokers compared with nonsmokers (p=0.042, p=0.039, p=0.024, and p=0.021, respectively). CONCLUSION: There was a significant reduction in forced vital capacity and forced expiratory volume values in the first second during pregnancy. Parity and smoking significantly influence spirometric variables.

Recommendations for the pharmacological treatment of COPD: questions and answers / Recomendações para o tratamento farmacológico da DPOC: perguntas e respostas

ABSTRACT The treatment of COPD has become increasingly effective. Measures that range from behavioral changes, reduction in exposure to risk factors, education about the disease and its course, rehabilitation, oxygen therapy, management of comorbidities, and surgical and pharmacological treatments to end-of-life care allow health professionals to provide a personalized and effective therapy. The pharmacological treatment of COPD is one of the cornerstones of COPD management, and there have been many advances in this area in recent years. Given the greater availability of drugs and therapeutic combinations, it has become increasingly challenging to know the indications for, limitations of, and potential risks and benefits of each treatment modality. In order to critically evaluate recent evidence and systematize the major questions regarding the pharmacological treatment of COPD, 24 specialists from all over Brazil gathered to develop the present recommendations. A visual guide was developed for the classification and treatment of COPD, both of which were adapted to fit the situation in Brazil. Ten questions were selected on the basis of their relevance in clinical practice. They address the classification, definitions, treatment, and evidence available for each drug or drug combination. Each question was answered by two specialists, and then the answers were consolidated in two phases: review and consensus by all participants. The questions answered are practical questions and help select from among the many options the best treatment for each patient and his/her peculiarities.

RESUMO O tratamento da DPOC vem se tornando cada vez mais eficaz. Medidas que envolvem desde mudanças comportamentais, redução de exposições a fatores de risco, educação sobre a doença e seu curso, reabilitação, oxigenoterapia, manejo de comorbidades, tratamentos cirúrgicos e farmacológicos até os cuidados de fim de vida permitem ao profissional oferecer uma terapêutica personalizada e efetiva. O tratamento farmacológico da DPOC constitui um dos principais pilares desse manejo, e muitos avanços têm sido atingidos na área nos últimos anos. Com a maior disponibilidade de medicações e combinações terapêuticas fica cada vez mais desafiador conhecer as indicações, limitações, potenciais riscos e benefícios de cada tratamento. Com o intuito de avaliar criticamente a evidência recente e sistematizar as principais dúvidas referentes ao tratamento farmacológico da DPOC, foram reunidos 24 especialistas de todo o Brasil para elaborar a presente recomendação. Foi elaborado um guia visual para a classificação e tratamento adaptados à nossa realidade. Dez perguntas foram selecionadas pela relevância na prática clínica. Abordam a classificação, definições, tratamento e evidências disponíveis para cada medicação ou combinação. Cada pergunta foi respondida por dois especialistas e depois consolidadas em duas fases: revisão e consenso entre todos os participantes. As questões respondidas são dúvidas práticas e ajudam a selecionar qual o melhor tratamento, entre as muitas opções, para cada paciente com suas particularidades.

Effective tobacco control measures: agreement among medical students / Medidas eficazes de controle do tabagismo: concordância entre estudantes de medicina

ABSTRACT Objective: To determine the level of agreement with effective tobacco control measures recommended by the World Health Organization and to assess the attitudes toward, knowledge of, and beliefs regarding smoking among third-year medical students at University of São Paulo School of Medicine, located in the city of São Paulo, Brazil. Methods: Between 2008 and 2012, all third-year medical students were invited to complete a self-administered questionnaire based on the Global Health Professionals Student Survey and its additional modules. Results: The study sample comprised 556 students. The level of agreement with the World Health Organization recommendations was high, except for the components "received smoking cessation training" and "raising taxes is effective to reduce the prevalence of smoking". Most of the students reported that they agree with banning tobacco product sales to minors (95%), believe that physicians are role models to their patients (84%), and believe that they should advise their patients to quit cigarette smoking (96%) and using other tobacco products (94%). Regarding smoking cessation methods, most of the students were found to know more about nicotine replacement therapy than about non-nicotine therapies (93% vs. 53%). Only 37% of the respondents were aware of the importance of educational antismoking materials, and only 31% reported that they believe in the effectiveness of encouraging their patients, during medical visits. In our sample, the prevalence of current cigarette smoking was 5.23%; however, 43.82% of the respondents reported having experimented with water-pipe tobacco smoking. Conclusions: Our results revealed the need to emphasize to third-year medical students the importance of raising the prices of and taxes on tobacco products. We also need to make students aware of the dangers of experimenting with tobacco products other than cigarettes, particularly water-pipe tobacco smoking.

RESUMO Objetivo: Determinar o grau de concordância com medidas eficazes de controle do tabaco recomendadas pela Organização Mundial da Saúde e avaliar as atitudes, o conhecimento e as crenças a respeito do tabagismo em alunos do terceiro ano de medicina da Faculdade de Medicina da Universidade de São Paulo, em São Paulo (SP). Métodos: Entre 2008 e 2012, todos os alunos do terceiro ano de medicina foram convidados a preencher um questionário autoaplicável baseado na Global Health Professions Student Survey e em seus módulos adicionais. Resultados: A amostra consistiu em 556 estudantes. O grau de concordância com as recomendações da Organização Mundial da Saúde foi alto, à exceção de "receberam treinamento a respeito de cessação do tabagismo" e "aumentar os impostos é uma medida eficaz para reduzir a prevalência do tabagismo". A maioria dos estudantes relatou que concorda com a proibição da venda de produtos do tabaco a menores de idade (95%), acredita que os médicos são modelos de comportamento para seus pacientes (84%) e acredita que deveriam aconselhar seus pacientes a parar de fumar cigarros (96%) e de usar outros produtos do tabaco (94%). No tocante aos métodos de cessação do tabagismo, observamos que a maioria dos estudantes sabe mais sobre terapia de reposição da nicotina do que sobre terapias não nicotínicas (93% vs. 53%). Apenas 37% dos participantes estavam cientes da importância de material educacional antitabagismo, e apenas 31% relataram que acreditam na eficácia de incentivar seus pacientes, durante as consultas médicas, a parar de fumar. Em nossa amostra, a prevalência de tabagismo atual foi de 5,23%; entretanto, 43,82% dos participantes relataram ter experimentado fumar tabaco com um narguilé. Conclusões: Nossos resultados revelaram a necessidade de deixar claro para os alunos do terceiro ano de medicina o quão importante é aumentar os preços e impostos dos produtos do tabaco. É também preciso conscientizar os alunos dos perigos de experimentar outros produtos do tabaco que não os cigarros, particularmente o narguilé.

Transfusion of older red blood cell units, cytokine burst and alloimmunization: a case-control study

BACKGROUND: Experimental data have shown that the transfusion of older red blood cell units causes alloimmunization, but the clinical applicability of this statement has never been properly assessed in non-sickle cell patients. It has been hypothesized that older units have higher numbers of cytokines, increasing the risk of alloimmunization related to antigen-presenting events. The goal of this study was to evaluate the association between the transfusion of older red blood cell units subjected to bedside leukodepletion and alloimmunization.METHODS: All patients submitted to transfusions of bedside leukodepletion red blood cell units proven to have become alloimmunized in one oncologic service between 2009 and 2013 were enrolled in this study. A control group was formed by matching patients without alloimmunization in terms of number of transfusions and medical specialty. The median age of transfused units, the percentage of transfused red blood cell units >14 days of storage in relation to fresher red cell units (≤14 days of storage) and the mean age of transfused units older than 14 days were compared between the groups.RESULTS: Alloimmunized and control groups were homogeneous regarding the most relevant clinical variables (age, gender, type of oncological disease) and inflammatory background (C-reactive protein and Karnofsky scale). The median age of transfused red blood cell units, the ratio of older units transfused compared to fresher units and the mean age of transfused units older than 14 days did not differ between alloimmunized and control patients (17 vs. 17; 68/32 vs. 63.2/36.8 and 21.8 ± 7.0 vs. 21.04 ± 7.9; respectively).CONCLUSION: The transfusion of older red blood cell units subjected to bedside leukodepletion is not a key risk factor for alloimmunization. Strategies of providing fresh red cell units aiming to avoid alloimmunization are thus not justified.

Comparison between objective measures of smoking and self-reported smoking status in patients with asthma or COPD: are our patients telling us the truth? / Comparação entre medidas objetivas do tabagismo e tabagismo autodeclarado em pacientes com asma ou DPOC: será que nossos pacientes dizem a verdade?

OBJECTIVE: Smoking prevalence is frequently estimated on the basis of self-reported smoking status. That can lead to an underestimation of smoking rates. The aim of this study was to evaluate the difference between self-reported smoking status and that determined through the use of objective measures of smoking at a pulmonary outpatient clinic. METHODS: This was a cross-sectional study involving 144 individuals: 51 asthma patients, 53 COPD patients, 20 current smokers, and 20 never-smokers. Smoking status was determined on the basis of self-reports obtained in interviews, as well as through tests of exhaled carbon monoxide (eCO) and urinary cotinine. RESULTS: All of the asthma patients and COPD patients declared they were not current smokers. In the COPD and asthma patients, the median urinary cotinine concentration was 167 ng/mL (range, 2-5,348 ng/mL) and 47 ng/mL (range, 5-2,735 ng/mL), respectively (p < 0.0001), whereas the median eCO level was 8 ppm (range, 0-31 ppm) and 5 ppm (range, 2-45 ppm), respectively (p < 0.05). In 40 (38%) of the patients with asthma or COPD (n = 104), there was disagreement between the self-reported smoking status and that determined on the basis of the urinary cotinine concentration, a concentration > 200 ng/mL being considered indicative of current smoking. In 48 (46%) of those 104 patients, the self-reported non-smoking status was refuted by an eCO level > 6 ppm, which is also considered indicative of current smoking. In 30 (29%) of the patients with asthma or COPD, the urinary cotinine concentration and the eCO level both belied the patient claims of not being current smokers. CONCLUSIONS: Our findings suggest that high proportions of smoking pulmonary patients with lung disease falsely declare themselves to be nonsmokers. The accurate classification of smoking status is pivotal to the treatment of lung diseases. Objective measures of smoking could be helpful in improving clinical management ...

OBJETIVO: O tabagismo autodeclarado é usado frequentemente para estimar a prevalência dessa condição. As taxas de tabagismo podem ser subestimadas por esse método. O objetivo deste estudo foi avaliar a diferença entre o tabagismo autodeclarado e o tabagismo determinado pelo uso de medidas objetivas em um ambulatório de doenças respiratórias. MÉTODOS: Estudo transversal realizado em 144 indivíduos: 51 pacientes com asma, 53 pacientes com DPOC, 20 fumantes e 20 não fumantes. O tabagismo foi determinado por meio de autorrelato em entrevistas e medição de monóxido de carbono no ar exalado (COex) e de cotinina urinária. RESULTADOS: Todos os pacientes com asma e DPOC declararam não ser fumantes. Nos pacientes com DPOC e asma, a mediana de concentração de cotinina urinária foi de 167 ng/ml (variação, 2-5.348) e de 47 ng/ml (variação, 5-2.735 ppm), respectivamente (p < 0,0001), enquanto . a mediana de COex foi de 8 ppm (variação, 0-31) e 5,0 ppm (variação, 2-45 ppm), respectivamente (p < 0,05). Em 40 (38%) dos pacientes com asma ou DPOC (n = 104), houve discordâncias entre o tabagismo autodeclarado e a concentração de cotinina urinária (> 200 ng/mL). Em 48 (46%) desses 104 pacientes, o não tabagismo autodeclarado foi refutado por um nível de COex > 6 ppm, considerado indicativo de fumo atual. Em 30 (29%) dos pacientes com asma ou DPOC, a concentração de cotinina urinária e o nível de COex contradisseram o autorrelato desses como não fumantes. CONCLUSÕES: Nossos achados sugerem que altas proporções de pacientes fumantes com doenças respiratórias declaram ser não fumantes. A classificação correta do tabagismo é fundamental no tratamento dessas doenças. Medidas objetivas do tabagismo podem ser úteis na melhora do manejo clínico e no aconselhamento. .

Distúrbios ventilatórios em pacientes encaminhados para tomografia de coronária: associação entre alterações espirométricas e aterosclerose / Respiratory disorders in patients referred for coronary tomography: association between atherosclerosis and spirometric changes

Diversos estudos mostram a associação entre doenças respiratórias e doença arterial coronariana (DAC). Além de fatores de risco semelhantes, como tabagismo e sedentarismo, ambos estão associadas à idade avançada e inflamação sistêmica. O uso de tomografia computadorizada coronariana (TCC) com múltiplos detectores é método diagnóstico de doença coronariana, descrevendo a anatomia e a gravidade da obstrução. Uma das formas de se estimar o risco de eventos cardiovasculares é o escore de cálcio coronariano (ECC) obtido neste exame. Muitos pacientes são encaminhados para realizar a TCC para investigar DAC ou classificar o risco de eventos cardíacos futuros. Devido à associação entre os fatores de risco da doença respiratória e DAC, é provável que muitos desses pacientes tenham redução da função pulmonar associada. O objetivo deste estudo foi estabelecer a prevalência de alterações espirométricas na população em investigação cardiopatia por TCC e o impacto da alteração funcional no uso de recursos de saúde. Pacientes encaminhados para a realização de TCC realizaram espirometria. Esses foram, então, divididos de acordo com o padrão espirométrico em grupo função pulmonar normal e alterada (FPN e FPA). O FPA foi subdividido em padrão obstrutivo e restritivo (PO e PR). Os indivíduos foram seguidos por 1 ano quanto a internações hospitalares, procura a pronto-socorro e óbitos. Completaram o protocolo 205 pacientes. A prevalência de alteração espirométrica foi de 28,3% (11,2% no grupo PO e 17,2% no grupo PR). Apenas 8% da população do estudo tinha diagnóstico prévio de doença respiratória. Os preditores de alteração espirométrica foram tabagismo, idade e presença de lesão obstrutiva detectada na TCC. O grupo FPA apresentou aumento significativo no ECC (36 vs 1) e maior proporção de lesões obstrutivas coronarianas (57,2% VS 25,4%), principalmente à custa do grupo PR. Pacientes do grupo FPA tiveram maior procura à PS (20,7% vs 9,5%) e mortalidade (6,9% vs 0%) que o grupo...

Several studies have shown the association between respiratory disease and coronary artery disease (CAD). In addition to similar risk factors such as smoking and physical inactivity, both are associated with systemic inflammation and advanced age. Coronary computed tomography (CCT) with multiple detectors is diagnostic method for coronary heart disease, describing anatomy and vessel obstruction severity. One way to estimate risk of cardiovascular events is the coronary calcium score (CCS) from this examination. Many patients are referred to CCT in order to investigate CAD or classify the risk for future cardiac events. Because of the association between risk factors for respiratory disease and CAD, it is likely that many of these patients may have reduced lung function. The study objective was to establish the prevalence of spirometric changes in population investigating heart disease by CCT and the impact of functional changes in use of health care resources. Patients referred for CCT performed spirometry. They were then divided according to spirometry results in normal and abnormal lung function group (NLF and ALF). The ALF was subdivided into obstructive and restrictive pattern (OP and RP). Subjects were followed for 1 year regarding hospital admissions, emergency room visits and deaths. 205 patients completed the protocol. Spirometric change prevalence was 28.3% (11.2% in OP group and 17.2% in the RP group). Only 8% of the study population had a previous diagnosis of respiratory disease. Spirometric changes predictors were smoking, age and obstructive lesion detected in CCT. The ALF group showed significant increase in ECC (36 VS 1) and higher proportion of coronary obstructive lesions (57.2% vs 25.4%), mainly at the expense of the RP group. Patients in ALF group had greater demand for emergency visits (20.7% vs 9.5%) and mortality (6.9% vs 0%) that the NLF group. We conclude that there is a high prevalence of spirometric changes in...

Effect of Chlorhexidine Gel in Mentally Handicapped Children highly Infected with Streptococcus Mutans

Objective:To evaluate the effect of 1% chlorhexidine (CHX) gel on mentally handicapped children (n=11) highly infected with Streptococcus mutans (SM) and evaluate the re-colonization time of this bacterium after the treatment period.. Material and Methods:Before CHX treatment, saliva samples were collected to establish baseline saliva SM levels. CHX gel was daily applied for 5 min, for 7 consecutive days. Saliva samples were then collected after 7, 30, 60, 90 and 120 days to evaluate SM oral re-colonization. Data were analyzed by the Wilcoxon test (α=0.05).Results:When compared to baseline (5.7 / 3.0 x 105), the collection performed 7 days after CHX treatment (0.06 / 0.2 x 105) showed a significant reduction (P <0.05) in SM saliva levels (mean / s.d., CFU ml-1). In subsequent collections, a gradual SM re-colonization was observed, and after 60 days of treatment, the levels of this bacterium (0.8 / 0.9 x 105) no longer statistically differed from SM levels considered high risk to caries (105) (P> 0.05).Conclusion:Treatment with CHX gel for 7 days was effective in reducing the SM levels of mentally handicapped children and should be repeated after 60 days to control the risk of caries in these children...

Barriers associated with reduced physical activity in COPD patients / Barreiras associadas à menor atividade física em portadores de DPOC

OBJECTIVE: To evaluate the ability of COPD patients to perform activities of daily living (ADL); to identify barriers that prevent these individuals from performing ADL; and to correlate those barriers with dyspnea severity, six-minute walk test (6MWT), and an ADL limitation score. METHODS: In COPD patients and healthy, age-matched controls, the number of steps, the distance walked, and walking time were recorded with a triaxial accelerometer, for seven consecutive days. A questionnaire regarding perceived barriers and the London Chest Activity of Daily Living (LCADL) scale were used in order to identify the factors that prevent the performance of ADL. The severity of dyspnea was assessed with two scales, whereas submaximal exercise capacity was determined on the basis of the 6MWT. RESULTS: We evaluated 40 COPD patients and 40 controls. In comparison with the control values, the mean walk time was significantly shorter for COPD patients (68.5 ± 25.8 min/day vs. 105.2 ± 49.4 min/day; p < 0.001), as was the distance walked (3.9 ± 1.9 km/day vs. 6.4 ± 3.2 km/day; p < 0.001). The COPD patients also walked fewer steps/day. The most common self-reported barriers to performing ADL were lack of infrastructure, social influences, and lack of willpower. The 6MWT distance correlated with the results obtained with the accelerometer but not with the LCADL scale results. CONCLUSIONS: Patients with COPD are less active than are healthy adults of a comparable age. Physical inactivity and the barriers to performing ADL have immediate implications for clinical practice, calling for early intervention measures. .

OBJETIVO: Avaliar a capacidade de portadores de DPOC em realizar atividades de vida diária (AVD), identificar barreiras que impedem a sua realização, e correlacionar essas barreiras com gravidade da dispneia, teste de caminhada de seis minutos (TC6) e um escore de limitação de AVD. MÉTODOS: Nos pacientes com DPOC e controles saudáveis pareados por idade, o número de passos, a distância percorrida e o tempo de caminhada foram registrados por um acelerômetro tridimensional durante sete dias consecutivos. Um questionário de barreiras percebidas e a escala London Chest Activity of Daily Living (LCADL) foram utilizados para identificar os fatores que impedem a realização de AVD. A dispneia foi medida por duas escalas distintas, e a capacidade física submáxima foi determinada com base no TC6. RESULTADOS: Foram avaliados 40 sujeitos com DPOC e 40 controles. Os pacientes com DPOC, comparados aos controles, realizaram menor tempo de caminhada (68,5 ± 25,8 min/dia vs. 105,2 ± 49,4 min/dia; p < 0,001), menor distância caminhada (3,9 ± 1,9 km/dia vs. 6,4 ± 3,2 km/dia; p < 0,001) e menor número de passos/dia. As principais barreiras referidas para realização de AVD foram falta de estrutura, influência social e falta de vontade. A distância caminhada no TC6 correlacionou-se com os resultados do acelerômetro, mas não os resultados da LCADL. CONCLUSÕES: Portadores de DPOC são menos ativos quando comparados a adultos saudáveis com idade comparável. O sedentarismo e as barreiras para a realização de AVD têm implicações imediatas na prática clínica, exigindo medidas precoces de intervenção. .