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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
51

Les particularites pathogeniques de la rupture spontanee de l'oesophage et<br />prevention de la precarite des sutures

Makloul, Mohsine 28 February 2006 (has links) (PDF)
La rupture spontanee de l'oesophage (RSO), le syndrome Boerhaave - une<br />pathologie rare, mais avec une haute mortalite, et, selon les donnees des differents<br />auteurs, varie entre 21 % et 67 %.<br />Les tentatives de reproduire experimentalement le mecanisme de la rupture<br />de l'oesophage etaient entreprises par differents auteurs, mais a chaque fois les<br />conditions experimentales se distinguaient. Toutes les etudes n'etaient pas a notre<br />avis tout a fait correctes sur le plan du mecanisme d'influence sur la paroi de<br />l'oesophage. Premierement, la rupture de l'oesophage se provoque par<br />augmentation de la pression hydraulique, deuxiemement, il est necessaire de<br />prendre en consideration non seulement les particularites anatomiques de<br />l'oesophage et du hiatus oesophagien du diaphragme, mais aussi l'etat de la<br />muqueuse de l'oesophage chez les cadavres humains.<br />Malgre les succes atteints en chirurgie de l'oesophage, on constate toujours<br />un haut pourcentage de l'inconsistance des sutures chez les malades ayant une<br />RSO, 30-50 %. A notre avis cela est lie a l'absence de la prevention du reflux<br />gastro-oesophagien et de la prevention de la precarite des sutures de l'oesophage.<br />Cette these est consacree a la definition des facteurs du risque de la rupture<br />spontanee de l'oesophage et l'amelioration des resultats de son traitement.
52

Cartografias do corpo : metáforas contemporâneas da sutura e da cicatriz / Cartography of the body : contemporary metaphors of suture and scar

Azevedo, Aline Fernandes de, 1979- 22 August 2018 (has links)
Orientador: Eni de Lourdes Puccinelli Orlandi / Tese (doutorado) - Universidade Estadual de Campinas, Instituto de Estudos da Linguagem / Made available in DSpace on 2018-08-22T18:23:03Z (GMT). No. of bitstreams: 1 Azevedo_AlineFernandesde_D.pdf: 2077437 bytes, checksum: 47d23fdf00e59db136f682735ee731b4 (MD5) Previous issue date: 2013 / Resumo: Esta tese tem por objetivo compreender os movimentos de sentido sobre/do corpo produzido em diferentes materialidades significantes, e que mantém relação com três práticas discursivas e corporais distintas, aqui teorizadas como tecnologias corporais: a dança, a medicalização do corpo e a tatuagem. Para tanto, priorizamos o espaço da festa rave como lugar de produção dessas práticas, sítio significante que abriga processos de identificação e individualização do sujeito contemporâneo, conforme a proposta de Pêcheux e Orlandi. Interessa-nos, pois, observar as formas de assujeitamento fabricadas na atualidade, em condições materiais e históricas específicas, tendo em vista a forma como o corpo se textualiza nas redes de sociabilidade da Internet. Partimos da suposição de que esse corpo ideologicamente marcado é também um corpo de desejo: lugar de falta, do possível. É pela/na falta que o sujeito se constitui em sujeito de desejo, é na tentativa de tamponá-la que ele tece para si sentidos inscritos em práticas capazes de metaforizar a falta em ser: nas discursividades analisadas, o movimento de sentidos compõe cartografias marcadas por suturas e cicatrizes. Essas metáforas do corpo, assim formuladas, possibilitam pensar as práticas ideológicas como profundamente paradoxais: é no furo, nos sentidos em fuga, que este trabalho dá a ver outros lugares de identificação, permitindo que a noção de resistência seja significada diferentemente / Abstract: The objective of this thesis is to understand the meaning of the movements on/of the body produced in significant different materiality and that keep the relationship between three different discourse and body practices, the dance, medication and tattoo. In order to do so we gave priority to the rave parties, where these are common practices, as a significant place that houses the identification and individualization processes of the contemporary subject according to the Pêcheux and Orlandi proposal. We are interested in observing the forms of subjection currently performed under specific historical and material conditions, aiming to understand how the body is contextualized in the social networks of the Internet. We started with the premise that this ideologically marked body is also a body of desire, a body that lacks a possible body. And it is for what lacks that the subject constituted him/herself in object of desire, and it is trying to disguise it that he/she builds meanings, written in practices that can metaphor the lack of being. In the analyzed discourse the movement of the meanings composes a cartography that is marked by sutures and scars. Formulated like this, these metaphors of the body make it possible to think the ideological practices as deeply paradoxical. It is in the puncture, in the meanings of escape, that this work makes it possible to see other identification places, allowing the notion of resistance to be differently diagnosed / Doutorado / Linguistica / Doutora em Linguística
53

Confirmation of Safety, Performance and Usability of Sternotomy Suture Materials in Patients undergoing Sternotomy with Early Functional Follow-Up Treatment

Eraqi, Mohamed 18 April 2023 (has links)
Background: There are many factors are known to increase the risk of sternal wound infection (SWI), some studies have reported that nickel is a risk factor for SWI. Titanium wires have only been used as an alternative to steel wires in patients with known allergy to nickel. However, there is a paucity of literature regarding the safety of using titanium wires compared to that on the safety of steel wires for sternum closure after cardiac surgery. Therefore, this study aimed to demonstrate the non-inferiority of titanium wires, even in patients without a known allergy. Methods: A total of 322 Patients who underwent elective full median sternotomy were randomly assigned to sternal closure either by titanium wires (n=161) or by stainless steel wires. Results: 14 patients had sternal instability, six (3.7%) patients in the titanium group and eight (5%) patients in the stainless steel group (p = 0.585). There was no statistically significant difference between both groups in terms of postoperative wound infection (p=0.147). Patients in the titanium group experienced statistically significant lower postoperative pain than those in the stainless steel group (p = 0.024). The wire type was not an independent risk factor for SI, as shown by univariate and logistic regression analyses. Conclusion: Titanium wires are a good alternative and have been proven to be safe and effective for sternal closure. The surgeon should be aware of the possibility of developing an allergic reaction to the wires especially in patients with previous multiple allergic histories.:Table of Contents 1. Background 5 1.1. Anatomy of the sternum 5 1.2. Blood Supply of the Sternum 6 1.3. Basis and phases of acute Wound healing 7 1.4. Biomechanics of the sternum 7 1.5. Post-sternotomy complications 8 1.5.1. Dehiscence and sternal instability 8 1.5.2. Mediastinitis and Deep Sternal Wound Infection 10 1.5.3. Risk factors 12 1.5.4. Diagnosis 12 1.5.5. Bacteriology of Sterno-Mediastinal fluid and tissues 14 1.5.6. Osteomyelitis 14 1.6. Sternal fixation and Wiring Techniques 15 1.7. Overview of sternal closure techniques in Germany 16 1.7.1 Sternal closure Technique in Heart Center Dresden. 17 1.8. ASEPSIS SCORE 17 1.9. NICKEL Allergy/Suture materials and biocompatibility 19 1.10 Nickel allergy and cardiac surgery 20 1.11 Titanium Allergy 21 1.12. Pathophysiology of Metal Hypersensitivity Reactions 22 1.13. The hypothesis of the study 24 2. Materials and methods 25 2.1. Study Population 25 2.1.1. Inclusion criteria 25 2.1.2. Exclusion criteria 25 2.2. Intervention 25 2.3. Control 26 2.4. Outcome 26 2.5. Time 26 2.6. Sample Size calculation 26 2.7. Sternal closure technique 27 2.8. Handling of the wire 28 2.9. Blinding and randomization technique 29 2.10. Data collection and documentation 29 2.11. Statistics 29 3. Results 31 3.1. Preoperative parameters 31 3.1.1. Entire group 31 3.1.2. Group comparison 32 3.2. Intraoperative parameters 34 3.2.1. Entire group 34 3.2.2. Group comparison 34 3.3. Postoperative parameters 35 3.3.1. Entire group 35 3.3.2. Group comparison 36 3.4. Incidence of postoperative sternal instabilities 38 3.5. Univariate analysis 38 3.5.1. Pre-operative 39 3.5.2. Intra-operative 40 3.5.3. Post-operative 40 3.5.4. Statistically significant data 41 3.5.5. Descriptive presentation of the subgroup analysis (Sternal Instability, wire Classification) 41 3.5.6. Logistic regression 43 3.6. Summary / key result 44 4. Discussion 45 4.1. Sternal Instability 46 4.2. BMI “Obesity” 47 4.3. Wound Infection /ASEPSIS Score 48 4.4. Postoperative Pain 49 4.5. Type of the Wire 51 4.6. The Rising Potential Impact of Metal Hypersensitivity on other specialities 51 4.7. Limitation of the study 52 4.7. Conclusion 55 5. Summary 56 6. Zusammenfassung 58 7. List of figure 60 8. List of tables 60 Bibliography 64
54

Interrupted sutures prevent recurrent abdominal fascial dehiscence: a comparative retrospective single center cohort analysis of risk factors of burst abdomen and its recurrence as well as surgical repair techniques

Groos, Linda Madeleine Anna 16 April 2024 (has links)
Burst abdomen (BA) is a severe complication after abdominal surgery, which often requires urgent repair. However, evidence on surgical techniques to prevent burst abdomen recurrence (BAR) is scarce. We conducted a retrospective analysis of patients with BA comparing them to patients with superficial surgical site infections from the years 2015 to 2018. The data was retrieved from the institutional wound register. We analyzed risk factors for BA occurrence as well as its recurrence after BA repair and surgical closure techniques that would best prevent BAR.:1 Abkürzungsverzeichnis 2 Einführung 2.1 Aufbau der Bauchwand und operative Zugangswege in der Abdominalchirurgie 2.1.1 Anatomie 2.1.2 Zugangswege 2.2 Wundinfektionen 2.3 Definition „Platzbauch“ 2.4 Risikofaktoren und Ursachen von Fasziendehiszenzen 2.4.1 Biochemische Einflüsse auf die Wundheilung 2.4.2 Mechanische und technische Faktoren 2.4.3 Allgemeine individuelle Faktoren 2.5 Management des Platzbauchs 2.6 Spätkomplikationen des Platzbauches 2.6.1 Narbenhernien 2.6.2 Intestinale Fisteln 2.6.3 Netzinfektion 2.6.4 Re-Dehiszenzen 3 Zielsetzung der vorliegenden Arbeit 4 Publikation 5 Zusammenfassung der Arbeit 5.1 Einleitung 5.2 Wundregister nosokomialer Wundinfektionen der Klinik für Viszeral-, Transplantations-, Thorax- und Gefäßchirurgie am Universitätsklinikum Leipzig 5.3 Risikofaktoren für Platzbäuche 5.4 Platzbauchentstehung 5.5 Chirurgische Verschlusstechnik 5.6 Re-Dehiszenzen 5.7 Limitationen der Analyse 6 Literaturverzeichnis 7 Anlagen 7.1 Darstellung des eigenen Beitrags 7.2 Selbstständigkeitserklärung 7.3 Lebenslauf 7.4 Publikationen 8 Danksagung
55

Revisão sistemática e metanálise do tratamento endoscópico do reganho de peso pós-derivação gástrica em Y-de-Roux / Systematic review and meta-analysis of the endoscopic treatment of weight regain following Roux-en-Y gastric bypass

Brunaldi, Vítor Ottoboni 03 April 2018 (has links)
Introdução: A derivação gástrica em Y-de-Roux (DGYR) é um dos procedimentos bariátricos mais realizados em todo o mundo. Apesar de sua alta eficácia, significativa proporção de pacientes recupera parte do peso perdido. Várias terapias endoscópicas foram introduzidas como alternativas para tratar o reganho de peso, mas a maioria dos artigos publicados tem amostra relativamente pequena, com dados pouco claros e de curto prazo. Objetivo: Avaliar sistematicamente a eficácia das terapias endoscópicas para reganho de peso pós-DGYR. Métodos: Foram realizadas buscas nas bases MEDLINE, EMBASE, Scopus, Web of Science, Cochrane, OVID, CINAHL/EBSCo, LILACS/Bireme e literatura cinzenta. Os desfechos primários avaliados foram perda absoluta de peso (PAP), perda de excesso de peso (PEP) e perda total de peso corporal (PPTP). Resultados: Trinta e dois estudos foram incluídos na análise qualitativa. Vinte e seis trabalhos envolvendo 1148 pacientes descreveram sutura endoscópica de espessura total (SET) e PAP, PEP e PPTP em 3 meses foram 8,5±2,9kg, 21,6±9,3% e 7,3±2,6%, respectivamente. Aos 6 meses, foram de 8,6±3,5kg, 23,7±12,3% e 8,0±3,9%. Aos 12 meses, 7,63±4,3kg, 16,9±11,1% e 6,6±5,0%. A análise de subgrupos mostrou melhores resultados no subgrupo submetido à coagulação com plasma de argônio (APC) prévio à SET (p < 0,0001). A metanálise incluindo 15 desses estudos mostrou resultados concordantes e confirmou a superioridade estatística da SET+APC em comparação à SET isolada. Três estudos descreveram sutura de espessura superficial (SEP) com PAP média de 3,0±3,8kg, 4,4±0,07kg e 3,7±7,4 kg em 3, 6 e 12 meses, respectivamente. No seguimento de curto, médio e longo prazo, a SET proporcionou resultados superiores em relação à SEP (p < 0,05). Dois artigos descreveram APC isolada com PAP média de 15,4±2,0 kg e 15,4±9,1kg em 3 e 6 meses. Nenhum estudo relatando escleroterapia satisfez os critérios de elegibilidade. Conclusões: A sutura de espessura total é efetiva no tratamento do reganho de peso pós-DGYR. A realização de APC antes da sutura parece resultar em maior perda de peso. Estudos comparativos são necessários para confirmar nossos resultados. A sutura de espessura total relaciona-se com melhores resultados em comparação à sutura de espessura superficial. Poucos estudos avaliam adequadamente a eficácia de outras técnicas endoscópicas / Introduction: Roux-en-Y Gastric Bypass (RYGB) is the most commonly performed bariatric procedure. Despite its high efficacy, some patients regain part of their lost weight. Several endoscopic therapies have been introduced as alternatives to treat weight regain but most of the articles are relatively small with unclear long-term data. Aim: To systematically assess the efficacy of endoscopic therapies for weight regain after RYGB. Methods: We searched MEDLINE, EMBASE, Scopus, Web of Science, Cochrane, OVID, CINAHL/EBSCo, LILACS/Bireme and gray literature. Primary outcomes were absolute weight loss (AWL), excess weight loss (EWL) and total body weight loss (TBWL). Results: Thirty-two studies were included in qualitative analysis. Twenty-six articles enrolling 1148 patients described fullthickness (FT) endoscopic suturing and pooled AWL, EWL and TBWL at 3 months were 8.5±2.9kgs, 21.6±9.3% and 7.3±2.6%, respectively. At 6 months, they were 8.6±3.5kg, 23.7±12.3% and 8.0±3.9%. At 12 months, they were 7.63±4.3kg, 16.9±11.1% and 6.6±5.0%. Subgroup analysis showed that all outcomes were significantly higher in the group with FT suturing combined with argon plasma coagulation (APC) (p < 0.0001). Meta-analysis including 15 FT studies showed greater results and confirmed the significant superiority of FT-APC compared to FT alone. Three studies described superficial-thickness suturing with pooled AWL of 3.0±3.8kg, 4.4±0.07kg and 3.7±7.4kg at 3, 6 and 12 months, respectively. At short, mid and long-term follow-up, FT suturing provided better outcomes compared to ST (p < 0.05). Two articles described APC alone with mean AWL of 15.4±2.0kg and 15.4±9.1kg at 3 and 6 months. No study describing sclerotherapy fulfilled eligibility criteria. Conclusions: Full-thickness suturing is effective at treating weight regain after RYGB. Performing APC prior to suturing seems to result in greater weight loss. Head-to-head studies are needed to confirm our results. Full-thickness suturing lead to greater outcomes compared to superficial thickness suturing. Few studies adequately assess effectiveness of other endoscopic techniques
56

Levantamento e estudo das ocorrências de grafita do Distrito Grafitífero Aracoiába-Baturité, CE / Survey and study of graphite occurrences in the Aracoiába-Baturité graphite bearing District, CE

Paulo Roberto Pizarro Fragomeni 23 March 2011 (has links)
O Distrito Grafitífero Aracoiába-Baturité apresenta depósitos do tipo gnaisse grafitoso (minério disseminado) e veio (minério maciço) com diferentes origens genéticas e com características físicas e ambientes geológicos de formação próprios. O minério tipo gnaisse grafitoso é de origem sedimentar, singenético, com teores de 1,5 a 8% de C, que se distribuem ao longo de duas extensas faixas paralelas, hospedadas na Subunidade Baturité, que constitui um importante metalotecto regional. A associação de grafita metamórfica disseminada em metassedimentos da Sequência Acarápe constitui um geoindicador de antiga bacia sedimentar neoproterozóica e, também, pode ser considerado como zona de geosutura resultante do subsequente fechamento de um oceano primitivo. As rochas desta subunidade correspondem na paleogeografia da Sequência Acarápe aos fácies de sopé de talude e de planície abissal. O minério tipo veio (fluido depositado) é epigenético e, com teores entre 20% e 70% de C, forma corpos tabulares e bolsões, controlados em escala local por estruturas de alívio (falhas, fraturas, zonas de contato, eixos de dobras etc.) que permitiram a percolação de soluções penumatolíticas relacionadas ao corpo plutônico de Pedra Aguda. As variações dos valores das relações entre isótopos estáveis de carbono (&#948;13C) na grafita do minério disseminado são de -26,72 a -23,52 e do minério maciço de -27,03 a -20,83, revelando sinal de atividades biológicas (bioassinaturas) e permitem afirmar que a grafita das amostras acima são derivadas de matéria orgânica. Foram apresentados os principais guias de prospecção para grafita e testados os seguintes métodos geofísicos: Eletro-Resistividade; GPR - Ground Penetrating Radar; Magnetometria; VLF (Very Low Frequency); e Polarização Induzida Espectral (IPS) / Resistividade (ER). A conjugação dos métodos de Polarização Induzida Espectral (IPS) e Eletro Resistividade (ER) foi o que demonstrou a melhor eficiência. Com relação à determinação do teor de carbono por termogravimetria (ATG), que é o método mais utilizado para este elemento. Verificou-se, que as faixas de queima atribuídas ao carbono no minério do Distrito de Aracoiába-Baturité (340&#61616; a 570C e de 570 a 1050C) eram diferentes das faixas do minério de Minas Gerais (350&#61616;C a 650&#61616;C e 650&#61616;C a 1.050&#61616;C). Esta constatação indica a necessidade de se determinar previamente as faixas de temperatura para cada região pesquisada. / The Aracoiába-Baturité Graphite-bearing District has graphitic gneiss deposits (disseminated ore) and vein (solid ore) with different genetic origins and their own physical characteristics and geological environments. The graphite gneiss ore is of sedimentary, syngenetic origin, with 1.5% to 8% C content, which is distributed along two long parallel belts, hosted in the Baturité Sub-unit, which consists of a major regional metallotect. The association of metamorphic graphite disseminated in metasediments of the Acarápe Sequence consists of a geoindicator of an old Neo-Proterozoic sedimentary basin and also can be considered a geosuture zone, the result of the subsequent closing of a primitive ocean. The rocks of this subunit correspond in the paleogeography of the Acarápe Sequence to the facies of the bottom of a slope and of an abyssal plain. The vein ore (deposited fluid) is epigenetic and, with C contents of between 20% and 70%, forms tabular bodies and pockets, controlled on a local scale by relief structures (faults, fractures, contact zones, fold axes, etc.), which allowed seepage of pneumatolithic solutions relating to the plutonic body of Pedra Aguda. The variations in the values of the ratios between stable carbon isotopes (&#948;13C) in the graphite of the disseminated ore are -26.72 to -23.52 and of the solid ore -27.03 to -20.83, showing a sign of biological activities (biosignatures), and it can be said that the graphite of the above samples is derived from organic matter. The main prospecting guides for graphite were presented and the following geophysical methods tested: Electro-resistivity (ER); Ground Penetrating Radar (GPR); Magnetometry; Very Low Frequency (VLF); and Spectral Induced Polarization (SIP) / Electro-resistivity (ER). It was found that the combination of the Spectral Induced Polarization (SIP) and Electro-resistivity (ER) methods proved the most efficient. In relation to determining the carbon content using thermogravimetry (TG), which is the most commonly used method for this element, it was found that the bands of burning attributed to the carbon in the ore in the Aracoiába-Baturité District (340 to 570C and from 570oC to 1050C) were different from the bands of the ore in Minas Gerais (350C to 650C and 650C to 1050C). This finding suggests the need to determine beforehand the temperature ranges for each region studied.
57

Towards surgical use of matrix metalloproteinase biology

Pasternak, Björn January 2008 (has links)
Matrix metalloproteinases (MMPs), such as collagenases, are a family of enzymes capable of degrading most constituents of the extracellular matrix. MMPs are thought to be involved in the aetiopathogenesis of tendon rupture. Additionally, failure of healing has in some instances been associated with elevated levels of MMPs. We have studied (a) the effects of the MMP-inhibitor doxycycline on healing of tendons and intestines in experimental models and (b) systemic levels of MMPs and their endogenous inhibitors (TIMPs) in patients with tendon rupture. In the first study, systemic doxycycline treatment lead to weakened rat Achilles tendons during healing after injury. Subsequently, systemic doxycycline was shown to improve biomechanical properties of tendon suture fixation in the rat Achilles tendon. Sutures were also coated with doxycycline, leading to similar improvement in mechanical strength of the suture construct during healing. In the third study, doxycycline-coated sutures improved the strength of healing intestinal anastomoses in an experimental model. Finally, we showed that patients with a history of Achilles tendon rupture had elevated levels of MMP-2, MMP-7 and TIMP-2 in serum. In addition, MMP-7 correlated inversely to mechanical strength of the tendon during healing. In conclusion, MMP-inhibitors can be administered systemically and locally to manipulate healing of tendons and intestines. Generalised alterations in the MMP-TIMP system may be involved in the pathogenesis of Achilles tendon rupture and associated with differences in outcome of healing.
58

Levantamento e estudo das ocorrências de grafita do Distrito Grafitífero Aracoiába-Baturité, CE / Survey and study of graphite occurrences in the Aracoiába-Baturité graphite bearing District, CE

Paulo Roberto Pizarro Fragomeni 23 March 2011 (has links)
O Distrito Grafitífero Aracoiába-Baturité apresenta depósitos do tipo gnaisse grafitoso (minério disseminado) e veio (minério maciço) com diferentes origens genéticas e com características físicas e ambientes geológicos de formação próprios. O minério tipo gnaisse grafitoso é de origem sedimentar, singenético, com teores de 1,5 a 8% de C, que se distribuem ao longo de duas extensas faixas paralelas, hospedadas na Subunidade Baturité, que constitui um importante metalotecto regional. A associação de grafita metamórfica disseminada em metassedimentos da Sequência Acarápe constitui um geoindicador de antiga bacia sedimentar neoproterozóica e, também, pode ser considerado como zona de geosutura resultante do subsequente fechamento de um oceano primitivo. As rochas desta subunidade correspondem na paleogeografia da Sequência Acarápe aos fácies de sopé de talude e de planície abissal. O minério tipo veio (fluido depositado) é epigenético e, com teores entre 20% e 70% de C, forma corpos tabulares e bolsões, controlados em escala local por estruturas de alívio (falhas, fraturas, zonas de contato, eixos de dobras etc.) que permitiram a percolação de soluções penumatolíticas relacionadas ao corpo plutônico de Pedra Aguda. As variações dos valores das relações entre isótopos estáveis de carbono (&#948;13C) na grafita do minério disseminado são de -26,72 a -23,52 e do minério maciço de -27,03 a -20,83, revelando sinal de atividades biológicas (bioassinaturas) e permitem afirmar que a grafita das amostras acima são derivadas de matéria orgânica. Foram apresentados os principais guias de prospecção para grafita e testados os seguintes métodos geofísicos: Eletro-Resistividade; GPR - Ground Penetrating Radar; Magnetometria; VLF (Very Low Frequency); e Polarização Induzida Espectral (IPS) / Resistividade (ER). A conjugação dos métodos de Polarização Induzida Espectral (IPS) e Eletro Resistividade (ER) foi o que demonstrou a melhor eficiência. Com relação à determinação do teor de carbono por termogravimetria (ATG), que é o método mais utilizado para este elemento. Verificou-se, que as faixas de queima atribuídas ao carbono no minério do Distrito de Aracoiába-Baturité (340&#61616; a 570C e de 570 a 1050C) eram diferentes das faixas do minério de Minas Gerais (350&#61616;C a 650&#61616;C e 650&#61616;C a 1.050&#61616;C). Esta constatação indica a necessidade de se determinar previamente as faixas de temperatura para cada região pesquisada. / The Aracoiába-Baturité Graphite-bearing District has graphitic gneiss deposits (disseminated ore) and vein (solid ore) with different genetic origins and their own physical characteristics and geological environments. The graphite gneiss ore is of sedimentary, syngenetic origin, with 1.5% to 8% C content, which is distributed along two long parallel belts, hosted in the Baturité Sub-unit, which consists of a major regional metallotect. The association of metamorphic graphite disseminated in metasediments of the Acarápe Sequence consists of a geoindicator of an old Neo-Proterozoic sedimentary basin and also can be considered a geosuture zone, the result of the subsequent closing of a primitive ocean. The rocks of this subunit correspond in the paleogeography of the Acarápe Sequence to the facies of the bottom of a slope and of an abyssal plain. The vein ore (deposited fluid) is epigenetic and, with C contents of between 20% and 70%, forms tabular bodies and pockets, controlled on a local scale by relief structures (faults, fractures, contact zones, fold axes, etc.), which allowed seepage of pneumatolithic solutions relating to the plutonic body of Pedra Aguda. The variations in the values of the ratios between stable carbon isotopes (&#948;13C) in the graphite of the disseminated ore are -26.72 to -23.52 and of the solid ore -27.03 to -20.83, showing a sign of biological activities (biosignatures), and it can be said that the graphite of the above samples is derived from organic matter. The main prospecting guides for graphite were presented and the following geophysical methods tested: Electro-resistivity (ER); Ground Penetrating Radar (GPR); Magnetometry; Very Low Frequency (VLF); and Spectral Induced Polarization (SIP) / Electro-resistivity (ER). It was found that the combination of the Spectral Induced Polarization (SIP) and Electro-resistivity (ER) methods proved the most efficient. In relation to determining the carbon content using thermogravimetry (TG), which is the most commonly used method for this element, it was found that the bands of burning attributed to the carbon in the ore in the Aracoiába-Baturité District (340 to 570C and from 570oC to 1050C) were different from the bands of the ore in Minas Gerais (350C to 650C and 650C to 1050C). This finding suggests the need to determine beforehand the temperature ranges for each region studied.
59

Avaliação estética da queiloplastia em indivíduos com fissura labial comparando dois materiais para síntese cutânea / Aesthetic evaluation in cleft lip with differents materials for cutaneous synthesis

Oliveira, Rosany Larissa Brito de 23 February 2018 (has links)
Introduction: The nonsyndromic orofacial cleft (OC) is the fourth birth defect and the most common craniofacial malformation. The primary cleft repair surgery in the lip (cheiloplasty) or in the palate (palatoplasty) should be more aesthetic and functional, due to the nose and lip aesthetic side in people with OC has a value which goes beyond the human vanity, it is primordial to the child’s personality formation and his or her relatives. Objective: The objective of this study was to evaluate the cheiloplasty aesthetic results in individuals with unilateral cleft lip, using two different materials for cutaneous synthesis. Methodology: A randomized controlled clinical trial was performed, at the Sociedade Especializada em Atendimento ao Fissurado do Estado de Sergipe (SEAFESE). All subjects who underwent queiloplasty at SEAFESE between October 2014 and June 2017 participated in this study, constituting a population of 50 individuals. The control group had as material for cutaneous synthesis the polyglactin 910 reabsorbable suture and the experimental group had the octyl-2- cyanoacrylate tissue adhesive. These individuals were evaluated by six blinded evaluators with one month and six months post-surgery, at which time standardized frontal face pictures were taken. The esthetical face evaluation was performed using the Visual Analogue Scale (VAS), the Cosmetics Scale Evaluation proposed by Singer and the Classification Scale proposed by Mortier. In addition, an anthropometric analysis proposed by Pietruski was performed. Results: The population sociodemographic profile is an individual with an average age of 3.2 years, with monthly family income below two minimum salaries, most of them are from countryside and have pre-foramen cleft. About the cheiloplasty aesthetic results, in the one-month post-operative follow-up there was no significant statistical difference for VAS and for the Mortier Scale. But in the Singer Scale, the tissue adhesive presented better results for the variables: height, color, hatch marks or suture marks and overall appearance. In the six-month postoperative follow-up, there was no significant statistical difference for VAS as well. However, there was a difference, for the Singer Scale (width, color and hatch marks or suture marks) and in the Mortier Scale (scar and red lip), when better cosmetic results were noticed with the adhesive. In the anthropometric analysis proposed by Pietruski, when the two cutaneous synthesis materials were compared, a significant statistical difference was observed in three of the nineteen parameters evaluated. Finally, about the postoperative complications, there was only one surgical wound partial dehiscence in the control group. Conclusion: The tissue adhesives presented a superior cosmetic result when it was compared to the resorbable sutures. In six-month postoperative follow-up, the adhesive presented superior results in the anthropometric analysis proposed by Pietruski and in the scales proposed by Singer and by Mortier. In the comparison between plastic surgeons and oral and maxillofacial surgeons, there were differences in the evaluations of three variables, when the oral and maxillofacial surgeons were more critical. / Introdução: A fissura orofacial (FO) não sindrômica é o quarto defeito congênito mais frequente, além de ser a malformação craniofacial mais ocorrente. A cirurgia primária de reparação da fissura, do lábio (queiloplastia) ou do palato (palatoplastia) deve ser mais estética e funcional possível, já que o lado estético do nariz e do lábio do fissurado tem valor que vai muito além da vaidade humana, sendo primordial na formação da personalidade da criança. Objetivo: O objetivo deste estudo é comparar os resultados estéticos da queiloplastia em indivíduos com fissura labial unilateral comparando dois materiais diferentes para síntese cutânea. Casuística e métodos: Foi realizado um ensaio clínico cego controlado com distribuição aleatória na Sociedade Especializada em Atendimento ao Fissurado do Estado de Sergipe (SEAFESE). Participaram desta pesquisa todos os indivíduos que foram submetidos à queiloplastia na SEAFESE entre outubro de 2014 a junho de 2017, constituindo uma população de 50 indivíduos. O grupo controle teve como material de síntese cutânea o fio reabsorvível de poliglactina 910 e o grupo experimental, o adesivo tecidual octil-2- cianoacrilato. Esses indivíduos foram avaliados por seis avaliadores cegos, com um mês e seis meses de pós-cirúrgico, quando foram tomadas fotografias frontais padronizadas da face. A avaliação da face foi realizada utilizando a Escala Visual Analógica (EVA), a Escala Cosmética de Avaliação de Singer e a Escala de classificação proposta por Mortier. Além disso, foi realizada a análise antropométrica de Pietruski. Resultados: O perfil sociodemográfico da população estudada é de um indivíduo com idade média de 3,2 anos e com renda mensal familiar abaixo de dois salários mínimos. A maioria é natural do interior do estado de Sergipe e possui fissura pré-forame incisivo. Quanto aos resultados estéticos da queiloplastia, no segmento de um mês de pós-operatório, não houve diferença estatística significativa para a EVA e para a Escala de Mortier. Mas na Escala de Singer, o adesivo tecidual apresentou melhores resultados para as variáveis nível adjacente à pele, cor, marcas de sutura e na aparência geral. No segmento de seis meses de pós-operatório, também não houve diferença estatística significativa para a EVA. Mas houve diferença para a Escala de Singer (largura máxima da cicatriz, cor e marcas de sutura) e na Escala de Mortier (cicatriz e vermelhão do lábio superior), quando foram notados melhores resultados cosméticos com o uso do adesivo. Na análise antropométrica de Pietruski, quando os dois materiais de síntese cutânea foram comparados, observou-se diferença estatística significativa em três dos dezenove parâmetros avaliados. Por fim, quanto às complicações pós-operatórias, houve apenas uma deiscência parcial da ferida cirúrgica, no grupo controle. Conclusões: Os adesivos teciduais apresentaram um resultado cosmético superior às suturas reabsorvíveis. Na avaliação de 6 meses, o adesivo apresentou resultados superiores na análise antropométrica de Pietruski e nas escalas de Singer e Mortier. Na comparação entre cirurgiões plásticos e cirurgiões bucomaxilofaciais, houve diferença na avaliação de três variáveis, sendo os cirurgiões bucomaxilofaciais mais exigentes. / São Cristóvão, SE
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Revisão sistemática e metanálise do tratamento endoscópico do reganho de peso pós-derivação gástrica em Y-de-Roux / Systematic review and meta-analysis of the endoscopic treatment of weight regain following Roux-en-Y gastric bypass

Vítor Ottoboni Brunaldi 03 April 2018 (has links)
Introdução: A derivação gástrica em Y-de-Roux (DGYR) é um dos procedimentos bariátricos mais realizados em todo o mundo. Apesar de sua alta eficácia, significativa proporção de pacientes recupera parte do peso perdido. Várias terapias endoscópicas foram introduzidas como alternativas para tratar o reganho de peso, mas a maioria dos artigos publicados tem amostra relativamente pequena, com dados pouco claros e de curto prazo. Objetivo: Avaliar sistematicamente a eficácia das terapias endoscópicas para reganho de peso pós-DGYR. Métodos: Foram realizadas buscas nas bases MEDLINE, EMBASE, Scopus, Web of Science, Cochrane, OVID, CINAHL/EBSCo, LILACS/Bireme e literatura cinzenta. Os desfechos primários avaliados foram perda absoluta de peso (PAP), perda de excesso de peso (PEP) e perda total de peso corporal (PPTP). Resultados: Trinta e dois estudos foram incluídos na análise qualitativa. Vinte e seis trabalhos envolvendo 1148 pacientes descreveram sutura endoscópica de espessura total (SET) e PAP, PEP e PPTP em 3 meses foram 8,5±2,9kg, 21,6±9,3% e 7,3±2,6%, respectivamente. Aos 6 meses, foram de 8,6±3,5kg, 23,7±12,3% e 8,0±3,9%. Aos 12 meses, 7,63±4,3kg, 16,9±11,1% e 6,6±5,0%. A análise de subgrupos mostrou melhores resultados no subgrupo submetido à coagulação com plasma de argônio (APC) prévio à SET (p < 0,0001). A metanálise incluindo 15 desses estudos mostrou resultados concordantes e confirmou a superioridade estatística da SET+APC em comparação à SET isolada. Três estudos descreveram sutura de espessura superficial (SEP) com PAP média de 3,0±3,8kg, 4,4±0,07kg e 3,7±7,4 kg em 3, 6 e 12 meses, respectivamente. No seguimento de curto, médio e longo prazo, a SET proporcionou resultados superiores em relação à SEP (p < 0,05). Dois artigos descreveram APC isolada com PAP média de 15,4±2,0 kg e 15,4±9,1kg em 3 e 6 meses. Nenhum estudo relatando escleroterapia satisfez os critérios de elegibilidade. Conclusões: A sutura de espessura total é efetiva no tratamento do reganho de peso pós-DGYR. A realização de APC antes da sutura parece resultar em maior perda de peso. Estudos comparativos são necessários para confirmar nossos resultados. A sutura de espessura total relaciona-se com melhores resultados em comparação à sutura de espessura superficial. Poucos estudos avaliam adequadamente a eficácia de outras técnicas endoscópicas / Introduction: Roux-en-Y Gastric Bypass (RYGB) is the most commonly performed bariatric procedure. Despite its high efficacy, some patients regain part of their lost weight. Several endoscopic therapies have been introduced as alternatives to treat weight regain but most of the articles are relatively small with unclear long-term data. Aim: To systematically assess the efficacy of endoscopic therapies for weight regain after RYGB. Methods: We searched MEDLINE, EMBASE, Scopus, Web of Science, Cochrane, OVID, CINAHL/EBSCo, LILACS/Bireme and gray literature. Primary outcomes were absolute weight loss (AWL), excess weight loss (EWL) and total body weight loss (TBWL). Results: Thirty-two studies were included in qualitative analysis. Twenty-six articles enrolling 1148 patients described fullthickness (FT) endoscopic suturing and pooled AWL, EWL and TBWL at 3 months were 8.5±2.9kgs, 21.6±9.3% and 7.3±2.6%, respectively. At 6 months, they were 8.6±3.5kg, 23.7±12.3% and 8.0±3.9%. At 12 months, they were 7.63±4.3kg, 16.9±11.1% and 6.6±5.0%. Subgroup analysis showed that all outcomes were significantly higher in the group with FT suturing combined with argon plasma coagulation (APC) (p < 0.0001). Meta-analysis including 15 FT studies showed greater results and confirmed the significant superiority of FT-APC compared to FT alone. Three studies described superficial-thickness suturing with pooled AWL of 3.0±3.8kg, 4.4±0.07kg and 3.7±7.4kg at 3, 6 and 12 months, respectively. At short, mid and long-term follow-up, FT suturing provided better outcomes compared to ST (p < 0.05). Two articles described APC alone with mean AWL of 15.4±2.0kg and 15.4±9.1kg at 3 and 6 months. No study describing sclerotherapy fulfilled eligibility criteria. Conclusions: Full-thickness suturing is effective at treating weight regain after RYGB. Performing APC prior to suturing seems to result in greater weight loss. Head-to-head studies are needed to confirm our results. Full-thickness suturing lead to greater outcomes compared to superficial thickness suturing. Few studies adequately assess effectiveness of other endoscopic techniques

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