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Search Results: 1 - 10 of 63028 matches for " Coelho Antonio Roberto Barros "
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área viável e vasculariza o, pós autonomiza o cirúrgica, de retalho pré-fabricado por implante vascular em ratos
Sá Jairo Zacchê de,Aguiar José Lamartine de Andrade,Morais Júlio,Coelho Antonio Roberto Barros
Acta Cirurgica Brasileira , 2002,
Abstract: Os objetivos do presente estudo foram avaliar os efeitos da autonomiza o cirúrgica sobre a extens o da área viável e da vasculariza o de retalhos cutaneos pré-fabricados com área média de 48,2cm2 na parede abdominal de ratos. Os retalhos de pele eram pré-fabricados por implante de um pedículo femoral ligado distalmente e implantado diretamente na camada subdérmica. A pele da parede abdominal de 25 ratos Wistar foi comparada em três grupos de retalhos: grupo A, implante vascular sem autonomiza o e grupos B e C, implante vascular com autonomiza o no mesmo tempo cirúrgico. Três semanas após, os retalhos dos grupos A e B foram elevados como retalhos em ilha, nutridos pelo pedículo implantado. No grupo C, o pedículo implantado foi seccionado no momento da eleva o do retalho. Sete dias após, a extens o das áreas viáveis nos grupos A, B e C foi delimitada e o percentual da área viável, em rela o à área total do retalho, calculado por meio do Auto Cad R 14. A densidade vascular em torno do pedículo implantado, nos grupos A e B, foi avaliada por estudo histológico. O valor médio do percentual de área viável dos retalhos de pele foi de 9,6% no grupo onde os retalhos n o foram autonomizados, 44,8% no grupo onde os retalhos foram autonomizados e 0,3% no grupo onde o pedículo implantado foi seccionado. Os resultados mostraram que o procedimento de autonomiza o aumentou significativamente (p< 0,01, teste bicaudal de Mann - Whitney) os percentuais de área viável e n o alterou estatisticamente (p = 0,307, teste bicaudal de Mann - Whitney) a densidade vascular em torno do pedículo, três semanas após o mesmo ter sido implantado.
Processo modificado de reprodu??o e amplifica??o de imagem para mensura??o de área por planimetria: Aplica??o em feridas planas produzidas em c?es, tratadas por curativos oclusivos de pele de r?
FALC?O, Suyiene Cordeiro;COELHO, Antonio Roberto de Barros;ALMEIDA, Edvaldo Lopes de;GALDINO, Carlos Alberto Pessoa de Mello;
Brazilian Journal of Veterinary Research and Animal Science , 2001, DOI: 10.1590/S1413-95962001000400004
Abstract: digital image analysis and planimetry are important tools for evaluation of plain wound areas submitted to local treatment. in the proposed process, perimeters of wound areas were obtained in loco by tracing over transparent sheet and further reproduced and amplified by laser copier, precluding the use of photography and developing. the contraction and granulation areas were then measured by planimeter. epitelization area were determined by difference between the above mentioned areas. data from measurements and determinations of areas were further transformed in cumulative percentage of wound contraction (pwc), wound epitelization (pwe) and wound healing (pwh). the proposed process was tested in square shaped lesions (400 mm2), produced in both right and left thoraco-dorsal surfaces of dogs. seventeen lesion localized in the right thoraco-dorsal region were treated by rana catesbeiana skin, previous preserved by hypothermia (test group). another 17 lesions in left thoraco-dorsal surface were treated by moistened gauze (control group). pwc, pwe and pwh were evaluated at the 7th, 14th, 21th and 28th pod. macro and microscopic studies showed skin frog destruction, suggestive of rejection phenomenon. it follows that: 1. changes in reproducing image process permitted to save costs. the reading error of planimeter was ± 0.5%; 2. pwc, pwe and pwh showed non significant differences between groups. such equivalence was attributed to destruction of frog skin, suggestive of rejection process.
Atividade mioelétrica do intestino delgado de c?es submetidos à oclus?o parcial da veia porta
Ferraz, álvaro Ant?nio Bandeira;Campos, Josemberg Marins;Evangelista, Luis Fernando;Coelho, Antonio Roberto de Barros;Araújo-Filho, José Guido de;Ferraz, Edmundo Machado;
ABCD. Arquivos Brasileiros de Cirurgia Digestiva (S?o Paulo) , 2011, DOI: 10.1590/S0102-67202011000100005
Abstract: background: temporary occlusion of the portal vein causes splancnic venous stasis and intestinal disfunction, that can produce alterations in the motility, and this fact is not vastly known. aim: to evaluate the small bowel myoelectric activity and histology in the six dogs, also covering mean arterial blood pressure (ap), pulse rate (pr), central venous pressure (cvp) e portal pressure (pp), in two phases: pre-occlusion and occlusion. methods: it was done general anesthesia, invasive monitorization of the ap, pr e cvp, laparotomy, measure of the pp, fixation of the three pairs of electrodes in the intestinal wall, jejunal biopsy and parcial occlusion of the portal vein, being programmed the increase of the pp between 2.5 and 3 times baseline. electrodes were connected to a computer system that captured electrical signals from the intestine. the computer has a software of acquisition to store and analyse the myoelectric activity after registering, what happened in 30 minutes of the pre-occlusion phase and in 60 minutes of occlusion. the variance and the mean rms(root mean square) of the myoeletric activity were determined. the statistical analysis was done with friedman, dunn, cochran and students t tests. results: mean rms of myoeletric activity showed significant decrease in the phase of portal occlusion, in comparison to preocclusion phase. the frequency of hemorrhage of the lamina propria was major during occlusion. it was proportional at stasis time, with significant difference between the preocclusion and the occlusion of 60 minutes. inflammatory infiltration, vascular dilation and epithelial detachment did not show any differences between two phases. during the stasis, ap, pr and cvp decreased (p=0,326; 0,375 e 0,008, respectively), and pp increased(p=0,015). conclusions: parcial occlusion of the portal vein produced reduction of the myoeletric activity and elevation of the percentage frequency of hemorrhage in lamina propria, and a fall of cvp, with relative
área viável e vasculariza??o, pós autonomiza??o cirúrgica, de retalho pré-fabricado por implante vascular em ratos
, Jairo Zacchê de;Aguiar, José Lamartine de Andrade;Morais, Júlio;Coelho, Antonio Roberto Barros;Lopes, Silvia Maria Limongi;Melo, Cláudia Batista;
Acta Cirurgica Brasileira , 2002, DOI: 10.1590/S0102-86502002000700011
Abstract: the aim of this study was to evaluate the effect of delay procedure on the survival and vasculature of a skin prefabricated flap with mean area rate of the 48.2cm2 in a rat abdominal wall donnor site model. the skin flap was prefabricated by implantation of a distally ligated femoral pedicle into subdermal layer of the skin. skin of the abdominal wall donnor site of 25 wistar rats were compared in three groups of flaps receiving (a) pedicle implantation with no delay and (b) and (c) delay performed at the time of pedicle implantation. three weeks later, the flaps in the group a and b were raised as an island flap, based on the implanted pedicle. in the group c, the implanted pedicle was severed when the flaps were raised. seven days later, survival area in groups a, b and c were marked and the percentage survival area, with regard to whole flap area, calculated by auto cad r-14. the vascular density around the implanted pedicle, in groups a and b, was assessed by histological study. the mean percentage survival rate of the skin flap was 9.6 percent in the nondelayed group, 44.8 percent in the delayed group and 0.3percent in the group with implanted pedicle severed. the results of this study showed that delay procedure significantly increased (p<0.01, two-tailed mann-whitney test) the percentages survival of the flap and was found to have no influency over vascular density (p=0.307 two-tailed mann-whitney test) developed around the pedicle implantation three weeks after prefabrication.
Cystic dilatation of the common bile duct in adults: report of five cases and review of literature
Arruda Pedro Carlos Loureiro de,Coelho Antonio Roberto de Barros,Lima Filho José Falc?o Corrêa,Machado Ricardo José Caldas
Acta Cirurgica Brasileira , 2000,
Abstract: The authors report five cases of cystic dilatation of the common bile duct Type I (Todani?s classification) in adults patients, in Division of General Surgery of a University Hospital, treated over a- 25-year- period from 1974 to 1999, among 16.057 operations, and not previously published. Diagnosis was obtained by operative cholangiogram (OC) in the first case, percutaneous transhepatic cholangiogram on the second one (PTHC) and by ultrasonography (US), endoscopic retrograde cholangiopancreatography (ERCP), and operative cholangiogram (OC), respectively, on the last three cases. The second patient had an adenocarcinoma arising in the cystic wall associated with peritoneal metastasis. The first two cases were treated by internal drainage and the last three by excision of the cysts and bilioenteric anastomoses. Classification, incidence, etiology, diagnosis, malignization and surgical treatment of biliary cystic disease (BCD) were revised, with the conclusion that resection must be the preferable method of treatment, when possible, especially due to the concern of malignization.
Cystic dilatation of the common bile duct in adults: report of five cases and review of literature
Arruda, Pedro Carlos Loureiro de;Coelho, Antonio Roberto de Barros;Lima Filho, José Falc?o Corrêa;Machado, Ricardo José Caldas;Souza, Ayrton Ponce de;Mathias, Carlos Augusto de Carvalho;Ferraz, álvaro Ant?nio Bandeira;Ferraz, Edmundo Machado;
Acta Cirurgica Brasileira , 2000, DOI: 10.1590/S0102-86502000000400009
Abstract: the authors report five cases of cystic dilatation of the common bile duct type i (todani?s classification) in adults patients, in division of general surgery of a university hospital, treated over a- 25-year- period from 1974 to 1999, among 16.057 operations, and not previously published. diagnosis was obtained by operative cholangiogram (oc) in the first case, percutaneous transhepatic cholangiogram on the second one (pthc) and by ultrasonography (us), endoscopic retrograde cholangiopancreatography (ercp), and operative cholangiogram (oc), respectively, on the last three cases. the second patient had an adenocarcinoma arising in the cystic wall associated with peritoneal metastasis. the first two cases were treated by internal drainage and the last three by excision of the cysts and bilioenteric anastomoses. classification, incidence, etiology, diagnosis, malignization and surgical treatment of biliary cystic disease (bcd) were revised, with the conclusion that resection must be the preferable method of treatment, when possible, especially due to the concern of malignization.
Estimativa da área foliar de plantas de lima ácida 'Tahiti' usando métodos n?o-destrutivos
Coelho Filho, Maurício Antonio;Angelocci, Luiz Roberto;Vasconcelos, Marcos Roberto Baptista;Coelho, Eugênio Ferreira;
Revista Brasileira de Fruticultura , 2005, DOI: 10.1590/S0100-29452005000100043
Abstract: the objective of this study was to evaluate non-destructive methods of estimating total leaf area of young 'tahiti' lime (citrus latifolia tan.) plants grown in the field. information of biometrical variables of 28 young plants (0.07 to 1.44 m2) and digitized image of front area of each plant (plant silhouette) were used. these variables were correlated to the direct measurements (leaves and average leaf area counting). as a result, it was possible to estimate total plant leaf area (aft) based upon the equation: aft = 88.936 x di - 1.4017 (r2=0.75), where di stands for the trunk diameter taken 5 cm below the graft and the silhouette area in m2 (im): aft = 2.4951 x im (r2=0.72). the leaf area of secondary branches (afr) can be estimated by an exponential equation with the branch diameter (dr): afr = 0.0144e277.02 x dr (r2=0.71). these methodologies can be used for estimation of a mean value of leaf area in the orchard and should not be indicated when high accuracy is necessary for the estimative, since the absolute mean errors are large.
Estado e política educacional: o receituário do liberalismo social-democrata
Roberto Antonio Deitos,Angela Mara de Barros Lara
Eccos Revista Científica , 2012,
Abstract: This paper analyzes a few proposals contained in prescriptions from the Democratic Social Liberalism in the field of educational policies, with special emphasis on the field of the Brazilian Educational Policies. The focus of analysis here falls upon the proposals launched to warrant - ideologically and economically - the educational reforms that came to be in the 1990s and that also got developed with the managing and coercive endorsements of many International Organisms, with emphasis - in the case of South America - on IDB, the Inter-American Development Bank and the World Bank, which played the role of agencies that stood out in the process of capital globalization.
Biomechanical evaluation of microbial cellulose (Zoogloea sp.) and expanded polytetrafluoroethylene membranes as implants in repair of produced abdominal wall defects in rats
Falc?o, Suyiene Cordeiro;Coelho, Ant?nio Roberto de Barros;Evêncio Neto, Joaquim;
Acta Cirurgica Brasileira , 2008, DOI: 10.1590/S0102-86502008000200012
Abstract: purpose: to evaluate the load of rupture of implants of membranes of microbial cellulose (zoogloea sp.) and extended polytetrafuoroethylene in sharp defects of abdominal wall of rats. methods: sixty wistar male rats, with a mean weight of 437,7g ± 40,9, anesthetized by a mixture of ketamine (5mg/100g) and xylazine (2mg/100g), were submitted to a rectangular (2x3cm) excision of the abdominal wall, including fascia, muscle and peritoneum, and treated with membranes of microbial cellulose (mc) (mc group- 30 animals) or extended polytetrafluoroethylene (eptfe) (eptfe group- 30 animals). each group was subdivided in 14th pod, 28th pod and 60th pod subgroups. under anesthesia, animals were submitted to euthanasia at 14th pod, 28th pod and 60th pod for evaluation of load of rupture. results: load of rupture levels were significantly elevated (p<0, 05) among 14th, 28th and 60th postoperative days from each group. when compared between groups, values of load of rupture were significantly larger (p<0, 05) in eptfe group than in mc group. conclusion: resistance to strength at implant/host interface was more pronounced in ptfee group than in mc group.
Incorporation by host tissue of two biomaterials used as repair of defects produced in abdominal wall of rats
Falc?o, Suyiene Cordeiro;Evêncio Neto, Joaquim;Coelho, Ant?nio Roberto de Barros;
Acta Cirurgica Brasileira , 2008, DOI: 10.1590/S0102-86502008000100013
Abstract: purpose: biomaterials may be used as treatment of great abdominal wall defects to avoid tension during repair. in the present research we intended to investigate incorporation type by host tissue of membranes of microbial cellulose (mc), produced by the bacteria zoogloea sp., and of polytetrafluoroethylene (eptfe) in abdominal wall defects of rats. methods: sixty male rats wistar, anesthetized by ketamine (5mg/100g) and xylazine (2mg/100g), were submitted to a rectangular excision (2x3cm) of the abdominal wall, including fascia, muscles and peritoneum and further treated with implants of microbial cellulose (mc group - 30 animals) or expanded polytetrafluoroethylene ( eptfe group- 30 animals). each group was subdivided in 14th dpo, 28th dpo and 60th dpo subgroups. results: incorporation of biomaterials was observed by wrapping and infiltration by host tissue. it has been found that wrapping associated to infiltration of host connective tissue in implants of eptfe were present in 100% of the observed samples, and this may be responsible for increase resistance to traction. inversely, wrapping without host tissue infiltration was seen in 100% of examined specimens of mc implants. conclusion: wrapping and host tissue infiltration is seen only in eptfe implants.
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