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Search Results: 1 - 10 of 67400 matches for " Ronan José; "
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Neostigmine in the treatment of snake accidents caused by Micrurus frontalis: report of two cases
Vital Brazil, Oswaldo;Vieira, Ronan José;
Revista do Instituto de Medicina Tropical de S?o Paulo , 1996, DOI: 10.1590/S0036-46651996000100012
Abstract: antivenom in order to be effective in the treatment of coral snake accidents must be injected very soon after the bite owing to the rapid rate of absorption of the venom neurotoxins. as this is not always possible, other forms of treatment besides serotherapy must be employed to avoid asphyxia and death. neostigmine and artificial respiration are used for this purpose. neostigmine restores neuromuscular transmission if the venom-induced blockade results from a reversible interaction of its neurotoxins with the end-plate receptors. this is the mechanism of the neuromuscular blockade produced by the venom of m. frontalis snakes from centereastern and southern brazil, and argentine. neostigmine is able, therefore, to antagonize the blockade, and has been shown to be very effective in the treatment of the experimental envenomation of dogs and monkeys. in the present communication, two cases of m. frontalis accidents treated with antivenom and neostigmine are reported. in both, neostigmine was successful in producing regression of the paralysis, confirming the effectiveness shown in the treatment of the poisoning induced in animals by m. frontalis venom.
Fluxo de saída de oxigênio fornecido por reanimadores manuais com bal?o auto-inflável em pacientes com ventila??o espontanea
Godoy, Armando Carlos Franco de;Vieira, Ronan José;Vieira Neto, Ronan José;
Jornal Brasileiro de Pneumologia , 2008, DOI: 10.1590/S1806-37132008000400005
Abstract: objective: to determine the oxygen outflow delivered by seven different models of manually operated self-inflating resuscitation bags (with and without an oxygen reservoir connected), which were tested using different oxygen supply rates without manipulating the bag, by simulating their use in patients breathing spontaneously. methods: the oxygen outflow was measured using a wall oxygen flow meter and a flow meter/respirometer attached to the bag, together with another flow meter/respirometer attached to the patient connection port. the resuscitation bags that allow the connection of an oxygen reservoir were tested with and without this device. all resuscitation bags were tested using oxygen supply rates of 1, 5, 10, and 15 l/min. statistical analyses were performed using analysis of variance and t-tests. results: the resuscitation bags that allow the connection of an oxygen reservoir presented a greater oxygen outflow when this device was connected. all resuscitation bags delivered a greater oxygen outflow when receiving oxygen at a rate of 15 l/min. however, not all models delivered a sufficient oxygen outflow even when the two previous conditions were satisfied. conclusions: of the resuscitation bags studied, those that allow the connection of an oxygen reservoir must have this reservoir connected to the bag when used as a source of oxygen in nonintubated spontaneously breathing patients. all of the models studied should receive oxygen at a rate > 15 l/min. it is not safe to use manually operated self-inflating resuscitation bags for this purpose without knowing their characteristics.
Compara??o da FiO2 fornecida por sete modelos de sistema bal?o-máscara auto-inflável
Godoy, Armando Carlos Franco de;Vieira, Ronan José;
Revista Brasileira de Anestesiologia , 2009, DOI: 10.1590/S0034-70942009000100004
Abstract: background and objectives: since resuscitators with self-inflating bag-mask systems manufactured and/or commercialized in brazil are widely available and used in health services, both out- and intra-hospitals, the objective of this study was to determine the o2 fractions delivered by seven resuscitators receiving different o2 flows. methods: seven resuscitators with self-inflating bag-mask systems were tested at the respiratory unit of the hc/unicamp. a wall o2 flowmeter was connected to the resuscitator that received an o2 flow of 1, 5, 10, and 15 l.min-1 and those were connected to a test lung. resuscitators capable of being connected to an o2 reservoir were tested with and without this accessory. twenty consecutive measurements were performed and the mean determined. results: only one resuscitator delivered and o2 fraction slightly below the accepted limit (0.80) when used with the o2 reservoir. without this device, all resuscitators achieved the minimal limit of o2 fraction (0.40). resuscitators not capable of being connected to an o2 reservoir delivered a higher o2. conclusions: all resuscitators capable of being connected to an o2 reservoir delivered a higher o2 concentration when connected to this device. resuscitators that do not have this capability delivered a higher o2 concentration than the ones that could be connected to this device but are used without it.
Crescimento e produ??o de clones de alho provenientes de cultura de tecidos e de propaga??o convencional
Resende, Francisco Vilela;Gualberto, Ronan;Souza, Rovilson José de;
Scientia Agricola , 2000, DOI: 10.1590/S0103-90162000000100011
Abstract: the objective of the present study was to evaluate growth and production of micropropagated plants (apical meristem culture) compared with plants conventionally multiplied. treatments consisted of two forms of multiplication (meristem culture and conventional plants), four garlic cultivars, five evaluation times (30, 60, 90, 120 and 150 days after planting) and randomized block design with four replications, in a split-plot scheme. plant height and number of leaves/plant were taken. pseudostalk diameter/bulb ratio was measured after 60 days of planting. after harvest, mean weights of bulbs, total and commercial yields were obtained. the tissue culture plants have increased their cycle about 18 days as compared with conventional ones. shoot growth expressed by plant height and number of leaves/plant and growth of bulb expressed by pseudostalk diameter/bulb ratio of tissue culture plants were superior to conventional plants, and these differences were greater for the cultivars "gigante rox?o" and "gravatá". in the same way, all characteristics related to yield (mean bulb weight, total and commercial yields) of plants multiplied "in vitro" were superior compared with conventional ones. as for tissue culture multiplication, cultivars "gravatá" and "gigante rox?o" were the most productive, while for conventional multiplication the cultivars "gravatá" and "lavínia" presented the highest production.
Crescimento e produ o de clones de alho provenientes de cultura de tecidos e de propaga o convencional
Resende Francisco Vilela,Gualberto Ronan,Souza Rovilson José de
Scientia Agricola , 2000,
Abstract: Este trabalho teve como objetivo avaliar o crescimento e a produ o de plantas de quatro cultivares de alho provenientes de cultura de tecidos (propaga o por meristemas apicais), em rela o às plantas da mesma cultivar multiplicadas de forma convencional. Utilizou-se um delineamento experimental de blocos ao acaso com quatro repeti es, em esquema de parcelas subdivididas no tempo, com oito tratamentos (plantas de cultura de meristemas apicais e de multiplica o convencional de quatro cultivares) nas parcelas e cinco épocas de avalia o (30, 60, 90, 120 e 150 dias após o plantio) como sub-parcelas. Nestas épocas, avaliou-se a altura da planta, número médio de folhas por planta. A raz o bulbar foi avaliada a partir dos 60 dias. No final do experimento, estimou-se o peso médio do bulbo e as produ es total e comercial. As plantas de cultura de tecidos tiveram seu ciclo prolongado, retardando a colheita em 18 dias em rela o às convencionais. O crescimento da parte aérea, expresso pela altura e número de folhas/planta, e do bulbo, de acordo com a raz o bulbar, de plantas oriundas de cultura de tecidos mostrou-se superior ao das plantas convencionais, sendo que estas diferen as mostraram-se mais efetivas para as cultivares Gigante Rox o e Gravatá. Da mesma forma, para todas as características relacionadas à produ o (peso médio de bulbo, produ o total e comercial), as plantas multiplicadas "in vitro" superaram as convencionais. Considerando a multiplica o por cultura de tecidos, as cultivares Gravatá e Gigante Rox o foram as mais produtivas, enquanto que na multiplica o convencional destacaram-se as cultivares Gravatá e Lavínia.
Altera??es da press?o de pico inspiratório e do volume corrente fornecidos por reanimadores manuais com bal?o auto-inflável em fun??o do fluxo de entrada de oxigênio utilizado
Godoy, Armando Carlos Franco de;Vieira, Ronan José;De Capitani, Eduardo Mello;
Jornal Brasileiro de Pneumologia , 2008, DOI: 10.1590/S1806-37132008001000010
Abstract: objective: to assess possible alterations in the tidal volume and peak inspiratory pressure delivered by seven models of manually operated self-inflating resuscitation bags as a function of the oxygen supply rate used. methods: the resuscitation bags tested were the following: oxigel, models a and b; ce reanimadores; protecsolutions; missouri; axmed; and narcosul. for the measurements, a wall oxygen flow meter, a flow meter/respirometer, a resuscitation bag, a sensor (tracer 5 unit), and a test lung were connected. in addition, the tracer 5 unit was connected to a notebook computer. oxygen supply rates of 1, 5, 10, and 15 l/min were used. results: the tidal volume delivered by the oxigel model a resuscitation bag when receiving oxygen at a rate of 15 l/min was approximately 99% greater than that delivered when receiving oxygen at a rate of 1 l/min. similarly, peak inspiratory pressure was approximately 155% greater. under the same conditions, the tidal volume delivered by the narcosul resuscitation bag was 48% greater, and peak inspiratory pressure was 105% greater. the remaining resuscitation bags tested showed no significant alterations in the tidal volume or peak inspiratory pressure delivered. conclusions: under the resistance and compliance conditions used, the resuscitation bags in which the oxygen inflow is directly to the interior of the bag had the patient valve stuck at the inspiratory position when receiving oxygen at a rate > 5 l/min, significantly increasing the tidal volume and peak inspiratory pressure delivered. this did not occur with the resuscitation bags in which the oxygen inflow is directed to the exterior of the bag.
Altera??o da press?o intra-cuff do tubo endotraqueal após mudan?a da posi??o em pacientes sob ventila??o mecanica
Godoy, Armando Carlos Franco de;Vieira, Ronan José;Capitani, Eduardo Mello De;
Jornal Brasileiro de Pneumologia , 2008, DOI: 10.1590/S1806-37132008000500008
Abstract: objective: the purpose of this study was to investigate endotracheal tube cuff pressure (pcuff) alteration in patients under mechanical ventilation after changes in position. methods: all selected patients were initially placed in the 35o semi-fowler position, with pcuff adjusted to 20 mmhg, and randomly divided into two groups. group a, in which patients were moved to the lateral decubitus position, facing away from the ventilator (measurement designated pcuff a1), returned to the initial position (measurement designated pcuff a2), moved to a lateral decubitus position, facing the ventilator (measurement designated pcuff a3) and then returned to the initial position (measurement designated pcuff a4); and group b, in which patients were moved to the lateral decubitus position, facing the ventilator (measurement designated pcuff b1), returned to the initial position (measurement designated pcuff b2), moved to the lateral decubitus position; facing away from the ventilator (measurement designated pcuff b3) and then returned to the initial position (measurement designated pcuff b4). results: the study comprised 70 patients, 31 allocated to group a and 39 allocated to group b. values >22 mmhg were observed in 142(50.7%) of the 280 pcuff measurements taken, and values <18 mmhg were observed in 14 (5%). when moved from the 35o semi-fowler position to the lateral decubitus position, facing away from the ventilator, 58 (82.2%) of the patients presented mean pcuff values in the higher range (>22 mmhg). conclusions: changes in body position can cause significant pcuff variations in patients under mechanical ventilation.
Dermatite de contato por mercúrio elementar com rea??o a distancia
De Capitani, Eduardo Mello;Souza, Elemir Macedo de;Vieira, Ronan José;Madureira, Paulo Roberto;
Anais Brasileiros de Dermatologia , 2009, DOI: 10.1590/S0365-05962009000100011
Abstract: a clinical case of contact dermatitis following direct skin contact with elemental mercury is presented. patient had metal mercury in contact with extensive part of his leg and foot skin resulting in erythematous, edematous, and vesicular dermatitis. lesions evolved to erythematous plaques with small scattered areas of necrosis and drying vesicle lesions. distant lesions appeared in the right forearm, chest and abdomen. urinary mercury 36h after contact was 5.9 μg/l, and one week later 19.6 μg/l, indicating dermal absorption. dermal absorption. dermal effects due to elemental mercury must be expected after direct skin contact.
Lead poisoning after gunshot wound
Madureira, Paulo Roberto de;De Capitani, Eduardo Mello;Vieira, Ronan José;
Sao Paulo Medical Journal , 2000, DOI: 10.1590/S1516-31802000000300006
Abstract: context: despite the absence of symptoms in the majority of patients carrying lead bullet fragments in their bodies, there needs to be an awareness of the possible signs and symptoms of lead intoxication when bullets are lodged in large joints like knees, hips and shoulders. such patients merit closer follow-up, and even surgical procedure for removing the fragments. objective: to describe a patient who developed clinical lead intoxication several years after a gunshot wound. design: case report. case report: a single white 23-year-old male, regular job as a bricklayer, with a history of chronic alcohol abuse, showed up at the emergency department complaining of abdominal pain with colic, weakness, vomiting and diarrhea with black feces. all the symptoms had a duration of two to three weeks, and had been recurrent for the last two years, with calming during interval periods of two to three weeks. abdominal radiograms showed a bullet lodged in the left hip, with a neat bursogram of the whole synovial capsule. a course of chelating treatment using calcium versenate (edtacana2) intravenously was started. after the chelation therapy the patient had recurrence of his symptoms and a radical solution for the chronic mobilization of lead was considered. a hip arthroplasty procedure was performed, leading to complete substitution of the left hip.
Microfinanzas y Políticas Públicas en Brasil: Una Evaluación del Programa CrediAmigo en la Percepción de los Actores Implicados
Capobiango, Ronan Pereira,Ramos-Silveira, Suely de Fátima,Braga, Marcelo José
GIGAPP Estudios Working Papers , 2013,
Abstract: Entre los ejemplos de microcrédito en Brasil, se destaca el Programa de Microcrédito Productivo Orientado del Banco del Nordeste, el Programa CrediAmigo. La presente propuesta busca evaluar los impactos del Programa CrediAmigo en la percepción de los gestores, asesores de crédito y/o coordinadores y beneficiarios, en municipios del norte de Minas Gerais. Esta propuesta se destaca por estudiar una de las regiones pobres de Brasil, que necesita estímulos externos para desenvolverse, además de la investigación de campo con diferentes actores sociales del CrediAmigo. Por medio del análisis de contenido, este estudio identificó los efectos positivos del microcrédito, coherentes con la teoría, considerándolo un instrumento capaz de fortalecer los emprendimientos y elevar la renta de las familias beneficiarias, inclusive, identificando une mejora en la calidad de vida.
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