372 resultados para Prescrição de Mandelstam e Leibbrandt


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analisar o efeito do treinamento aeróbio periodizado sobre a aptidão cardiorrespiratória e respostas afetivas em mulheres com síndrome dos ovários policísticos (SOP) e II) investigar se o exercício aeróbio realizado na zona de prazer para essa população atende a recomendação do American College of Sports Medicine (ACSM) no que se refere à intensidade para melhoria da saúde. Metodologia: foram incluídas mulheres na faixa etária entre 18 e 34 anos, com diagnóstico de SOP de acordo com o Consenso de Rotterdam. Para o subestudo I, oito pacientes sedentárias participaram de 16 semanas de treinamento aeróbio com incrementos mensais de intensidade: fase 1 = 60-70% da frequência cardíaca máxima (FCmax); fase 2 = 70-75% da FCmax; fase 3 = 75-80% da FCmax; fase 4 = 80-85% da FCmax. A intervenção foi realizada três vezes por semana, 40 minutos por sessão. Em todas as sessões foram registradas as respostas afetivas (Feeling Scale -5/+5) e a percepção subjetiva do esforço (escala de Borg CR 6-20). Antes e após a intervenção, as voluntárias realizaram teste ergoespirométrico. Para o subestudo II, 11 pacientes realizaram duas sessões de exercício aeróbio na zona de prazer, sendo registrados parâmetros relativos à demanda física através de receptor de GPS (Global Positioning System) de pulso com cardiofrequencímetro acoplado. As pacientes foram instruídas a realizar 40 minutos de exercício guiadas pelas âncoras verbais bom e muito bom (+3 e +5 na Feeling Scale). Resultados: no subestudo I, após 16 semanas de treinamento, houve aumento da aptidão cardiorrespiratória máxima (17,3%) e submáxima (21,5%). As respostas afetivas variaram entre bom (+3,1 ± 0,8) e razoavelmente bom xi (1,0 ± 0,9) e a percepção subjetiva do esforço entre muito leve a leve (10,2 ± 0,7) e um pouco difícil (12,7 ± 0,6) durante a intervenção. No subestudo II, as pacientes exercitaram-se a ~72,5 ± 6% da FC máxima, ~78,5 ± 6% da FC no limiar anaeróbio e passaram > 95% do tempo em intensidade moderada (~82%) e vigorosa (~16%) durante as sessões experimentais. Em média, as voluntárias reportaram as sessões como fácil (percepção subjetiva do esforço da sessão ~2,2 ± 0,7). Conclusões: o programa de treinamento aeróbio periodizado aumentou a aptidão cardiorrespiratória das pacientes analisadas e foi percebido como uma intervenção prazerosa. Adicionalmente, exercício aeróbio realizado de forma prazerosa atende a recomendação do ACSM no que se refere à intensidade para melhoria da saúde

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INTRODUCTION: Drug advertisement stimulates self-medication and irrational use of medicines, especially when it starts to interfere in the prescription. Monitoring advertisements, as well as the observation of its influence on health professionals, prescriptions become necessary because of this public health problem. OBJECTIVE: The aim of this work was to analyze drug advertisements directed to gynecologists and/or obstetricians doctors relating them to the current legislation as well as its influence on prescription. METHODOLOGY: The sample was composed of drug advertisements divulged to the gynecologists and / or obstetricians doctors and was analyzed according to RDC96/2008. To evaluate the influence of advertisement on prescription, a questionnaire was administered to gynecologists / obstetricians doctors and prescriptions of a public maternity were also evaluated. RESULTS AND CONCLUSION: Concerning the advertisements analyzed, 48% complied fully with current legislation and 52% of the advertisements analyzed were in accordance to the RDC No. 96/2008 in most of the items evaluated. The doctors interviewed are used to receive the visits of propagandists, even in the public service, receiving gifts offered by the industry and believe that medicine advertisement tries to influence prescribing. Many of them use the material provided by the propagandist as a source for their prescription, although they present a critical view about them information. The use of trade name / mark on the prescription is a common practice among the doctors interviewed, even in the public service, suggesting there is an influence of medicine advertisement on the prescription

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The objective of this study was to review the acute responses to maximal and supramaximal intermittent exercise (intensities near or above maximal oxygen uptake - iVO(2)max), and also at submaximal intermittent exercise, with intensities near maximal lactate steady state (MLSS). At the conditions of interval training above 100% iVO(2)max with short repetitions (<60 s), the passive recovery between the repetitions allows higher intensity during sets. For longer repetitions, the active recovery can be more efficient, since promotes greater blood lactate removal and longer time near VO(2)max. At the conditions of submaximal interval training, the relationship between intensity and duration of the repetitions are still maintained, i.e., the longer durations (>300 s) allow lower intensities and the shorter (150-300 s) allow higher intensities, with similar metabolic conditions (i.e., MLSS). However, both recovery types can be utilized, since they proportionate similar intensities at these conditions.

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The only calculations performed beyond one-loop level in the light-cone gauge make use of the Mandelstam-Leibbrandt (ML) prescription in order to circumvent the notorious gauge dependent poles. Recently we have shown that in the context of negative dimensional integration method (NDIM) such prescription can be altogether abandoned, at least in one-loop order calculations. We extend our approach, now studying two-loop integrals pertaining to two-point functions. While previous works on the subject present only divergent parts for the integrals, we show that our prescriptionless method gives the same results for them, besides finite parts for arbitrary exponents of propagators. (C) 2000 Elsevier B.V. B.V. All rights reserved.

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We discuss the pure gauge Schwinger-Dyson equation for the gluon propagator in the Landau gauge within an approximation proposed by Mandelstam many years ago. We show that a dynamical gluon mass arises as a solution. This solution is obtained numerically in the full range of momenta that we have considered without the introduction of any ansatz or asymptotic expression in the infrared region. The vertex function that we use follows a prescription formulated by Cornwall to determine the existence of a dynamical gluon mass in the light cone gauge. The renormalization procedure differs from the one proposed by Mandelstam and allows for the possibility of a dynamical gluon mass. Some of the properties of this solution, such as its dependence on A(QCD) and its perturbative scaling behavior are also discussed.

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Making sure that causality be preserved by means of ''covariantizing'' the gauge-dependent singularity in the propagator of the vector potential A(mu)(x), we show that the evaluation of some basic one-loop light-cone integrals reproduce those results obtained through the Mandelstam-Leibbrandt prescription. Moreover, such a covariantization has the advantage of leading to simpler integrals to be performed in the cone variables (the bonus), although, of course, it introduces an additional alpha-parameter integral to be performed (the price to pay).

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The negative-dimensional integration method (NDIM) seems to be a very promising technique for evaluating massless and/or massive Feynman diagrams. It is unique in the sense that the method gives solutions in different regions of external momenta simultaneously. Moreover, it is a technique whereby the difficulties associated with performing parametric integrals in the standard approach are transferred to a simpler solving of a system of linear algebraic equations, thanks to the polynomial character of the relevant integrands. We employ this method to evaluate a scalar integral for a massless two-loop three-point vertex with all the external legs off-shell, and consider several special cases for it, yielding results, even for distinct simpler diagrams. We also consider the possibility of NDIM in non-covariant gauges such as the light-cone gauge and do some illustrative calculations, showing that for one-degree violation of covariance (i.e. one external, gauge-breaking, light-like vector n μ) the ensuing results are concordant with the ones obtained via either the usual dimensional regularization technique, or the use of the principal value prescription for the gauge-dependent pole, while for two-degree violation of covariance - i.e. two external, light-like vectors n μ, the gauge-breaking one, and (its dual) n * μ - the ensuing results are concordant with the ones obtained via causal constraints or the use of the so-called generalized Mandelstam-Leibbrandt prescription. © 1999 Elsevier Science B.V.

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The World Health Organization (WHO) recommends that prescriptions of medicaments must be one parameter utilized to know how the medication is used by people. To do so, one specific methodology has been indicated, that is, the selected indicators of the use the medicaments. We applied this methodology with the aim of presenting a descriptive study of the physician prescription in Pediatric Clinic of the Health Basics Units. The results obtained are: the average number of medicaments prescribed with prescription was 2.6; the percentage of the medicaments prescribed with the generic name was 32%; the percentage of the prescriptions with antibiotics was 44.6%; the percentage of the prescriptions with injections was 10.4%; the percentage of the medicaments prescribed that are part of the municipal list was 22.8%, 27.5% for the program Dose Certs of the secretary of the State of São Paulo, and 50.4% by adding by adding the two lists. The essentiality of the medicaments prescribed may be considered very low, because only 32.6% appear in the RENAME. The percentage of the medicaments really dispensed was 39.9%. The medicaments more prescribed, according to the classification of the Anatomic-Therapeutic-Chemical (ATC), were the ones which acted in Respiratory System (26.8%), followed by anti-infectives for systemic use (16.4%) and by medicaments with acted in Alimentary tract and metabolism (15.8%). The conclusion is that the prescribers are moved by commercial influence of the drug makers, first because of the low prescription of medicaments by their generic name, second by the low number of medicaments effectively dispensed and then the low concordance between the ones prescribed and the ones included in the lists patterned by Tabatinga and by the State of São Paulo.

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Gauge fields in the light front are traditionally addressed via, the employment of an algebraic condition n·A = 0 in the Lagrangian density, where Aμ is the gauge field (Abelian or non-Abelian) and nμ is the external, light-like, constant vector which defines the gauge proper. However, this condition though necessary is not sufficient to fix the gauge completely; there still remains a residual gauge freedom that must be addressed appropriately. To do this, we need to define the condition (n·A) (∂·A) = 0 with n·A = 0 = ∂·A. The implementation of this condition in the theory gives rise to a gauge boson propagator (in momentum space) leading to conspicuous nonlocal singularities of the type (k·n)-α where α = 1, 2. These singularities must be conveniently treated, and by convenient we mean not only mathemathically well-defined but physically sound and meaningful as well. In calculating such a propagator for one and two noncovariant gauge bosons those singularities demand from the outset the use of a prescription such as the Mandelstam-Leibbrandt (ML) one. We show that the implementation of the ML prescription does not remove certain pathologies associated with zero modes. However we present a causal, singularity-softening prescription and show how to keep causality from being broken without the zero mode nuisance and letting only the propagation of physical degrees of freedom.

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This study was carried out in order to identify the interactions that occur most often between prescribed drugs as they are taken by elderly patients attending municipal public health centers in the city of Jaú, São Paulo State, Brazil. It is known that older people frequently have to live with chronic health problems, which oblige them to use the health service a great deal and to consume large quantities of medicines. When concomitant diseases are present, and polytherapy is being applied, the likelihood of adverse reactions and interactions between drugs increases. The population under study consisted of 148 persons aged 65 or more who frequented the pharmacy at the Núcleo de Gestão Assistencial (Municipal Health Centre, NGA25) in Jaú, between August and December 2004. Data were collected from medical prescriptions, the independent variables being the age and sex of the patient. For each patient, the pharmacological classes of drugs taken and drug-drug interactions were recorded. It was found that the mean numbers of drugs consumed were 3.8 among women and 3.9 among men. In terms of age, the highest number of drugs (4.2) was used in the group aged 75 to 84 years. The most frequently prescribed classes, in decreasing order, were: antihypertensives, 25.0%, heart drugs, 15.5%, diuretics, and anti-diabetic drugs, 10.7%. It was concluded that the classes most involved in drug-drug interactions were heart drugs, diuretics and antihypertensives. The most problematic active constituents were digoxin, amiodarone, frusemide, captopril, propranolol and nifedipine.

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The purpose of this study was to identify the drugs most often prescribed for hypertension at the Municipal Health Care Center of the town of Rincäo, State of São Paulo, Brazil, and the principal interactions arising from their association with other drugs, both anti-hypertensives and those in other classes. The study included 725 hypertensive patients registered at this health care center who were regularly seen by a physician every three months. Data were collected on age, sex, occurrence of diabetes, smoking, sedentary lifestyle and overweight, to obtain a profile of the hypertensive population of the area. Control records of all patients were available at the pharmacy in the health care center, where patients obtained their drugs once a month. Of the 725 patients, 38% were male and 62% female. Most (57%) were between 50 and 70 years of age, 21% used tobacco and 43% led a sedentary lifestyle. Single-drug therapy accounted for 33% of the prescriptions, multidrug therapy for 66%. In addition to anti-hypertensives, 50% of the patients took drugs of other therapeutic classes. Of those receiving multidrug therapy, 34% used three or more anti-hypertensives and 66% used only two of these drugs. Drug interactions were detected in as many as 47% of the prescriptions. Captopril was the drug that showed most interactions with others (54%), followed by hydrochlorothiazide (27%), furosemide (14%), propanolol (4%), and nifedipine (1%). The analysis revealed that drug consumption by the patients investigated is high, with a concomitantly high number of episodes of drug interaction.

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This article presents an analysis of the quality of advertisements for over-the-counter (OTC) drugs addressed to the medical profession, based on the new Anvisa resolution RDC 96 (17/12/2008). For this analysis, 16 volumes of the Brazilian Journal of Medicine (RBM) were collected, from August 2009 to December 2010. To investigate the quality of the adverts, we prepared a questionnaire divided into three parts. In total, 160 advertisements were found, of which 27 were related to drugs exempt from prescription, from 9 laboratories. It was observed that none of the advertisements complied fully with the new rules, as required by legislation (RDC 96/08), with violations ranging from identification of the advert to prohibitions of human figures and subjective messages. Therefore, it was concluded that there is a need to implement more effective monitoring, so as to improve the quality of the adverts, so they can be used as a reliable source of information and update by prescribers.

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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)