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Search Results: 1 - 10 of 199257 matches for " Dias Mariza D'Agostino "
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Effect of hyperbaric oxygen on the regeneration of experimental crush injuries of nerves
Tuma Jr. Paulo,Dias Mariza D'Agostino,Arrunátegui Gino,Duarte Gustavo Gibin
Revista do Hospital das Clínicas , 1999,
Abstract: Hyperbaric oxygen has been successfully used on treatment of acute ischemic injuries involving soft tissues and chronic injuries. In nerve crush injuries, the mechanisms involved are very similar to those found in ischemic injuries. Consequently, it is logical to hypothesize that hyperbaric oxygen should improve nerve repair, which is a critical step on functional recovery. In the present study, we created standard nerve crush injuries on sciatic nerves of rats, which underwent treatment with hyperbaric oxygen. Results were assessed by functional evaluation using walking-track analysis. The functional recovery indexes observed did not differ from control group. We concluded that hyperbaric oxygen therapy, in the schedule used, had no influence on functional recovery after nerve crush injuries.
Uso da oxigenoterapia hiperbárica em pacientes de um servi?o de reumatologia pediátrica
Rossi, Juliana Figueira M. R.;Soares, Polyanna Maria Ferreira;Liphaus, Bernadete Lourdes;Dias, Mariza D'Agostino;Silva, Clovis Artur Almeida;
Revista Brasileira de Reumatologia , 2005, DOI: 10.1590/S0482-50042005000200011
Abstract: the hyperbaric oxygen therapy consists in the breathing of pure oxygen under pressures higher than one atmosphere and has been used in the treatment of ulcerated lesions of various etiologies. six patients followed at the rheumathology unit, instituto da crian?a, hospital das clínicas, faculty of medicine, s?o paulo university, between 1996 and 2002, were submitted to hyperbaric oxygen therapy. this therapy was indicated by the presence of chronic osteomyelitis and tissue ulcer (vasculitis or infection) not responsive to the usual treatment. two patients presented cutaneous polyarteritis, two presented chronic recurrent multifocal osteomyelitis, one presented diffuse cutaneous sclerodema and one presented pyoderma gangrenosum. five patients were girls (age range from 6 to 13.2 years-old). the sessions of hyperbaric oxygen therapy were performed under pressures that ranged from 2.4 to 2.8 absolute atmospheres and their duration were two hours. the lowest number of sessions was 18 and the highest was 80. five patients presented complete resolution of the injuries. the patient with cutaneous sclerodema suspended the treatment after the 18th session, because she went back to her birthplace with partial improvement of the cutaneous injuries. the main adverse event during the sessions was ear pain after the first sessions, which disappeared with reduction of the pressure inside the chamber and the duration of the session. spandrel perforation or other adverse events were not observed. the hyperbaric oxygen therapy was efficient and well tolerated by patients with rheumatic diseases and ulcerated injuries by vasculitis, infected injuries or chronic osteomyelitis.
Effect of hyperbaric oxygen on the regeneration of experimental crush injuries of nerves
Tuma Jr., Paulo;Dias, Mariza D'Agostino;Arrunátegui, Gino;Duarte, Gustavo Gibin;Wada, Alexandre;Cunha, Armando Santos;Ferreira, Marcus Castro;
Revista do Hospital das Clínicas , 1999, DOI: 10.1590/S0041-87811999000300003
Abstract: hyperbaric oxygen has been successfully used on treatment of acute ischemic injuries involving soft tissues and chronic injuries. in nerve crush injuries, the mechanisms involved are very similar to those found in ischemic injuries. consequently, it is logical to hypothesize that hyperbaric oxygen should improve nerve repair, which is a critical step on functional recovery. in the present study, we created standard nerve crush injuries on sciatic nerves of rats, which underwent treatment with hyperbaric oxygen. results were assessed by functional evaluation using walking-track analysis. the functional recovery indexes observed did not differ from control group. we concluded that hyperbaric oxygen therapy, in the schedule used, had no influence on functional recovery after nerve crush injuries.
Sepse Brasil: estudo epidemiológico da sepse em Unidades de Terapia Intensiva brasileiras
Sales Júnior, Jo?o Andrade L.;David, Cid Marcos;Hatum, Rodrigo;Souza, Paulo César S. P.;Japiassú, André;Pinheiro, Cleovaldo T. S.;Friedman, Gilberto;Silva, Odin Barbosa da;Dias, Mariza DAgostino;Koterba, Edwin;Dias, Fernando Suparregui;Piras, Cláudio;Luiz, Ronir Raggio;,;
Revista Brasileira de Terapia Intensiva , 2006, DOI: 10.1590/S0103-507X2006000100003
Abstract: background and objectives: sepsis represents the major cause of death in the icus all over the world. many studies have shown an increasing incidence over time and only a slight reduce in mortality. many new treatment strategies are arising and we should define the incidence and features of sepsis in brazil. methods: prospective cohort study in sixty-five hospitals all over brazil. the patients who were admitted or who developed sepsis during the month of september, 2003 were enrolled. they were followed until the 28th day and/or until their discharge. the diagnoses were made in accordance to the criteria proposed by accp/sccm. it were evaluated demographic features, apache ii score, sofa (sepsis-related organ failure assessment) score, mortality, sources of infections, microbiology, morbidities and length of stay (los). results: seventy-five icus from all regions of brazil took part in the study.3128 patients were identified and 521 (16.7%) filled the criteria of sepsis, severe sepsis or septic shock. mean age was 61.7 (iqr 39-79), 293 (55.7%) were males, and the overall 28-day mortality rate was 46.6%. average apache ii score was 20 and sofa score on the first day was 7 (iqr 4-10). sofa score in the mortality group was higher on day 1 (8, iqr 5-11), and had increased on day 3 (9, iqr 6-12). the mortality rate for sepsis, severe sepsis and septic shock was 16.7%, 34.4% and 65.3%, respectively. the average los was 15 days (iqr 5-22). the two main sources of infection were the respiratory tract (69%) and the abdomen one (23.1%). gram-negative bacilli were more prevalent (40.1%). gram-positive cocci were identified in 32.8% and fungi infections in 5%. mechanical ventilation was observed in 82.1% of the patients, swan-ganz catheter in 18.8%, vasopressors in 66.2% and hemotransfusion in 44.7%. conclusions: it was observed a high mortality of sepsis in the icus in brazil. the high frequency of septic shock demonstrated a group at high risk of death. in order to have a be
Terminalidade e cuidados paliativos na unidade de terapia intensiva
Moritz, Rachel Duarte;Lago, Patricia Miranda do;Souza, Raquel Pusch de;Silva, Nilton Brand?o da;Meneses, Francisco Albano de;Othero, Jairo Constante Bitencourt;Machado, Fernando Osni;Piva, Jefferson Pedro;Dias, Mariza DAgostino;Verdeal, Juan Carlos Rosso;Rocha, Eduardo;Viana, Renata Andrea Pietro Pereira;Magalh?es, Ana Maria Pueyo Blasco de;Azeredo, Nara;
Revista Brasileira de Terapia Intensiva , 2008, DOI: 10.1590/S0103-507X2008000400016
Abstract: the objective of this review was to evaluate current knowledge regarding terminal illness and palliative care in the intensive care unit, to identify the major challenges involved and propose a research agenda on these issues the brazilian critical care association organized a specific forum on terminally ill patients, to which were invited experienced and skilled professionals on critical care. these professionals were divided in three groups: communication in the intensive care unit, the decision making process when faced with a terminally ill patient and palliative actions and care in the intensive care unit. data and bibliographic references were stored in a restricted website. during a twelve hour meeting and following a modified delphi methodology, the groups prepared the final document. consensual definition regarding terminality was reached. good communication was considered the cornerstone to define the best treatment for a terminally ill patient. accordingly some communication barriers were described that should be avoided as well as some approaches that should be pursued. criteria for palliative care and palliative action in the intensive care unit were defined. acceptance of death as a natural event as well as respect for the patient's autonomy and the nonmaleficence principles were stressed. a recommendation was made to withdraw the futile treatment that prolongs the dying process and to elected analgesia and measures that alleviate suffering in terminally ill patients. to deliver palliative care to terminally ill patients and their relatives some principles and guides should be followed, respecting individual necessities and beliefs. the intensive care unit staff involved with the treatment of terminally ill patients is subject to stress and tension. availability of a continuous education program on palliative care is desirable.
Maxwell’s Dynamical Philosophy: An Early Solution to the Problem of a Discrepancy between Particles and Waves  [PDF]
Salvo DAgostino
Advances in Historical Studies (AHS) , 2014, DOI: 10.4236/ahs.2014.33012
Abstract: J. C. Maxwell contributed to an important philosophy of science, the so-called Dynamical Philosophy and Dynamical Approach to his theories. He meant it by a Dynamical Approach a theory of motions of the moving particle that could dispense with the detailed mechanism of motion. In order to develop this type of approach, he applied a modified form of Lagrange's equations in his 1865 essay “A Dynamical Theory of the Electromagnetic Field” and in his master opus “A Treatise on Electricity and Magnetism”. But an attentive historical research has also realized that he used an analogous approach in his contribution to a kinetic theory of gases, the well known statistical law of velocities.
A Good Chance for the Cat’s Life: Erwin Schroedinger’s New Statistics and a Second Quantization Theory of Quantum  [PDF]
Salvo DAgostino
Advances in Historical Studies (AHS) , 2015, DOI: 10.4236/ahs.2015.41001
Abstract: In his paper on the Cat’s uncertain situation between life and death, S. intended to criticize the Copenhagen interpretation of Quantum Mechanics and, conversely, to assert the consistency of his own wavelike view of the theory. His ideas contrasted with Heisenberg and Bohr’s positions, but also with Einstein’s attempt at a classically statistical interpretation of a quantum theory. His criticism therefore did not intend to discredit the whole Quantum Mechanics. In the fifties, he proposed a second quantization approach to a many particles state of the theory, which included his New Statistics. He asserted that the new approach modified some aspects of his famous 1926 equations. In my paper, I argue that S.’s new ideas in the fifties are related to his 1920 and 1926 contributions on rarified gas theory.
An Overview of the Nineteenth and Twentieth Centuries’ Theories of Light, Ether, and Electromagnetic Waves  [PDF]
Salvo DAgostino
Advances in Historical Studies (AHS) , 2016, DOI: 10.4236/ahs.2016.51001
Abstract: Johannes Kepler, the seventeenth century celebrated astronomer, considered vision as the effect of its alleged cause—the Lumen. Since many centuries, scientists and philosophers of Light were especially interested in theories and experiments on the cause-effect relationship between our vision and its alleged cause. But the Nineteenth and Twentieth Centuries’ contributions of Helmholtz, Maxwell, Hertz, and Lorentz, proved that Light was an electromagnetic wavelike phenomenon, which propagated trough space or ether by an exceptionally high velocity. In my paper I analyze some of the reasons that might justify the controversies among the major experts in Physics and Electrodynamics. In 1905 Albert Einstein found that abolishing Ether would remarkably improve his new Special Relativity theory, and Maxwell’s and Hertz’s Electrodynamics. His theory was accepted by a large majority of physicists, Max Planck included, but he also found a ten-year silence on the side of Poincaré, and moderate oppositions from Lorentz, the great expert in classical Electrodynamics.
Equivalence Principle and Ether: Two Revolutionary Kernels of Einstein’s General Relativity  [PDF]
Salvo Dagostino
Advances in Historical Studies (AHS) , 2016, DOI: 10.4236/ahs.2016.55019
Abstract: Einstein’s discovery of the Equivalence Principle is to be considered as the most fundamental concept at the origin of his General Relativity. I highlight that the ether problem is related with Enstein’s conception of gravitational waves as a perturbation of the space-time curvature, formalized as a specific space-time process, and not as the effect of a whatever supporting medium. Quite differently, the nineteenth century field theory of gravitation supported by physicists such as Maxwell, Heaviside, and Hertz, was based on a search for substantial ether, and on a parallelism with Maxwell’s theory of electromagnetic waves. The negative results of their theories proved that parallelism was a wrong approach. Einstein’s genius superseded their approach by considering that it was not a matter of the ether’s constitution, but of a fundamental change in the role and nature of physics. In my paper I refer to Einstein’s different approaches to ether since his 1905 Special Relativity up to his 1950’ views. I argue that his different attempts were symptoms of the difficulty of his revolutionary innovation.
Aerossol bacteriano gerado por respiradores mecanicos: estudo comparativo
D'Agostino Dias, M.;Pellacine, E.N.;Zechineli, C.A.;
Revista da Associa??o Médica Brasileira , 1997, DOI: 10.1590/S0104-42301997000100005
Abstract: mechanical ventilators generate aerosol which may be bacterially colonized. purpose - to determine the environmental contamination generated by ventilators with two different humidification techniques. methods - the study was done comparing the generation of bacterial colonized aerosol by the expiratory valve of mechanical respirators with conventional water nebulization or with hygroscopic condensator as the humidifier source during 15 minutes of observation. results - the aerosol got positive cultures in 32.2% of the conventional system and in 5% of the condensator system (p = 0.0340). conclusion - we concluded that the humidification by the hygroscopic condensator may be an efficient way to reduce environmental bacterial contamination.
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