Дисертації з теми "Anastomosi"
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CARDINALI, LUCA. "Emicolectomia destra robotica con anastomosi intracorporea versus laparoscopica con anastomosi extracorporea." Doctoral thesis, Università Politecnica delle Marche, 2018. http://hdl.handle.net/11566/259705.
Повний текст джерелаAim: Robotic surgery is intended to improve surgical outcomes overcoming the inherent limitations of conventional laparoscopy by simplifying the most complex procedures such as the intracorporeal fashioning of an anastomosis. Several studies suggest that the intracorporeal confectioning of an anastomosis after a laparoscopic right colectomy may offer several advantages. The authors report a retrospective study comparing robotic right colectomy with intracorporeal anastomosis (RRC-IA) versus laparoscopic right colectomy with extracorporeal anastomosis (LRC-EA) Methods: A retrospective review of a prospectively maintained database of our institution was performed on the data on patients undergoing RRC-IA or LRC-EA for Crohn’s disease, adenomas or cancer between September 2013 and August 2017. One hundred and sixty-eight patients (RRC-IA=70, LRC-EA=98) met the inclusion criteria for eligibility in the study. Perioperative and short-term outcomes have been assessed. Results: A statistically significant difference was found between the two groups in terms of mean operative time and postoperative outcomes. Compared with the LRC-EA, the RRC-IA required a longer operative time but had better postoperative outcomes, such as a shorter time to first flatus and oral feeding recovery. No significant differences were found in the length of hospital stay, 30-day morbidity, mortality and number of lymph nodes harvested. Conclusion: The RRC-IA seems to offer slight advantages over LRC-EA in term of postoperative outcomes even if it still requests increased operative time and costs. Greater experience with the robotic technique may allow these advantages to counter some of the cost-related concerns that have deterred the more widespread utilization of robotic technology for colectomy.
CAPPELLETTI-TROMBETTONI, MARIA-MICHELA. "FANS ed anastomosi intestinale in un modello sperimentale di peritonite." Doctoral thesis, Università Politecnica delle Marche, 2016. http://hdl.handle.net/11566/243148.
Повний текст джерелаEffects of FANS on colon anastomosis repair in a rat model of peritonitis Background. In this study we aimed to investigate the effects of Diclofenac and Ketorolac on the healing of colonic anastomoses in the presence of polymicrobial sepsis. Materials and Methods. Sixteen Wistar rats were divided into 3 groups. Cecal ligation and puncture were performed for peritonitis. On the day after, an anastomosis of the left colon was performed and all rats received antibiotic (Imipenem) and analgesic therapy (Dolorex). In group C (control group) no other therapies were administered. In group K, 6 rats received 5 mg/kg of Ketorolac. In group D, 6 rats received 4 mg/Kg of Diclofenac. The drugs were administred subcutaneously at costruction of colonic anastomosis and were repeated (every 24 hours) for 4 day at the same dose. On postoperative day 7, all animals were killed and anastomotic macroscopic appearence, bursting pressures and microcirculation were measured. Tissue samples were obtained for further investigation of histological parameters and immunohistochemistry for VEGF. Results. There were no significative differences, for all variables measured, among the groups, in particular FANS groups provided greater mucosal re-epitheliazation compared to control group. Conclusion. This study showed that the administration of FANS dosen’t affect anastomotic colonic healing in rats peritonitis.
Gurrado, Angela. "L'impiego di patch di pericardio bovino nelle anastomosi intestinali. Studio sperimentale sul maiale." Doctoral thesis, Università di Catania, 2012. http://hdl.handle.net/10761/1144.
Повний текст джерелаTrombatore, Claudia. "Tomografia computerizzara e rischio di deiscenza delle anastomosi chirurgiche del colon: abdominal calcium score-nostra esperienza." Doctoral thesis, Università di Catania, 2018. http://hdl.handle.net/10761/4155.
Повний текст джерелаPereira, Yara Emantne Amaral. "Influencia do choque hemorragico na anastomose de colon sigmoide em ratos : avaliação com teste de resistencia a pressão de ruptura." [s.n.], 2007. http://repositorio.unicamp.br/jspui/handle/REPOSIP/308756.
Повний текст джерелаDissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Ciencias Medicas
Made available in DSpace on 2018-08-09T01:10:44Z (GMT). No. of bitstreams: 1 Pereira_YaraEmantneAmaral_M.pdf: 1682869 bytes, checksum: 9d5801f67ab43156ce97cd3a10778b4d (MD5) Previous issue date: 2007
Resumo: Introdução: As complicações das anastomoses intestinais podem ser graves com altos índices de morbi/mortalidade. Vários fatores relacionados à qualidade das mesmas têm sido objetos de estudos, como técnica operatória, fios de sutura ou variáveis bioquímicas, enquanto que outros, não associados diretamente à técnica cirúrgica, são menos avaliados, como por exemplo, a influência de choque hemorrágico. Objetivo: Avaliar o efeito do choque hemorrágico em anastomoses de cólon em ratos, com teste de ruptura à distensão por líquido. Material e Método: Foram utilizados ratos da linhagem Wistar, com idade aproximada de 90 dias e peso variando de 310 gramas a 380 gramas. Os animais foram divididos em dois grupos, sendo o grupo G1, composto por 10 animais submetidos à anastomose de cólon em condições de normovolemia e o grupo G2, composto por 10 animais submetidos à anastomose de cólon em condições de hipovolemia. O choque foi instalado através da retirada de meio mililitro de sangue a cada dois minutos, até que se atingissem valores de pressão arterial média (PAM) de 50mmHg ou volume total de retirada correspondente a 30% da volemia. Foram realizadas dosagens séricas de lactato (mmol/l) no início do procedimento e ao término do mesmo. Os valores séricos médios de lactato ao término da cirurgia foram de 1,91 mMol/l no grupo G1 e de 3,69 mMol/l no grupo G2 (p<0,05) No quinto dia de pós-operatório, os animais foram submetidos à eutanásia e tiveram suas anastomoses testadas por teste de resistência à pressão de ruptura à distensão por líquido. Resultados: No grupo G1, o valor médio da pressão de ruptura do cólon à distensão por líquido foi de 160,7 mmHg enquanto que no grupo G2 foi de 152,1mmHg (p>0,05). Conclusão: A presença de choque hemorrágico, nas condições estabelecidas neste estudo, não exerceu influência em anastomoses de cólon em ratos, avaliadas com teste de ruptura à distensão por líquido
Abstract: Introduction: Intestinal anastomoses complications can be very serious, with high morbidity and mortality rates. Several factors related to their quality have been object of studies, such as technical aspects, suture threads or biochemical variables. Others, not directly associated with the surgery technique, are less evaluated, such as the influence of hemorrhagic shock. Objective: Evaluate the effect of hemorrhagic shock in colonic anastomoses in rats, with resistance test to rupture by liquid distension. Methods and Material: Wistar lineage rats, averaging 90 days old and weight varying from 310 to 380 grams were divided into two groups. In the G1 group, 10 animals were submitted to colonic anastomoses in normovolemic terms and the G2 group 10 animals were submitted to colonic anastomoses in hipovolemic conditions. The shock was caused by half milliliter blood withdrawal, done every two minutes, until reached the value of average arterial pressure of 50mmHg or total volume of corresponding withdrawal to 30% of volemia. Serum lactate dosages were carried out at the beginning and at the end of the procedure. The average serum values lactate at the end of the surgery were 1,91 mMol/l in the G1 group and 3,69 mMol/l in the G2 group (p<0,05). On the fifth postoperative day, the animals were submitted to euthanasia. The anastomoses were evaluated with resistance test to rupture by liquid distension. Results: In the G1 group, the average value of colonic rupture was 160,7mmHg whereas in the G2 group was 152,1mmHg (p>0,05). Conclusion: Hemorrhagic shock, in the established conditions of this study, had no influence in colonic anastomosis in rats evaluated with resistance test to rupture by liquid distention
Mestrado
Cirurgia
Mestre em Cirurgia
Oppido, Guido <1971>. "Analisi dei fattori che influenzano la crescita delle arterie polmonari nei pazienti con cuore funzionalmente univentricolare sottoposti ad anastomosi cavo-polmonare bidirezionale." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2015. http://amsdottorato.unibo.it/7157/1/oppido_guido_tesi.pdf.
Повний текст джерелаBCPA has been routinely utilized as intermediate step to Fontan operation in patients with functionally single ventricle. After 40 years since its introduction still confirms good results with low complication and mortality rate. Pulmonary arteries growth after BCPA is rather variable and inconstant with a widely reported Nakata-index reduction after some months. Right lower lobe pulmonary index instead increases significantly, possibly due to preferential blood flow after BCPA. Patients with smaller pulmonary arteries at the beginning seem to benefit of a more effective pulmonary arteries growth. Accessory source of pulmonary blood flow at the BCPA still bares uncertain efficacy and benefits, even thought it seems to be associated with a better pulmonary artery growth, particularly left lower lobe, and better TCPC results.
Oppido, Guido <1971>. "Analisi dei fattori che influenzano la crescita delle arterie polmonari nei pazienti con cuore funzionalmente univentricolare sottoposti ad anastomosi cavo-polmonare bidirezionale." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2015. http://amsdottorato.unibo.it/7157/.
Повний текст джерелаBCPA has been routinely utilized as intermediate step to Fontan operation in patients with functionally single ventricle. After 40 years since its introduction still confirms good results with low complication and mortality rate. Pulmonary arteries growth after BCPA is rather variable and inconstant with a widely reported Nakata-index reduction after some months. Right lower lobe pulmonary index instead increases significantly, possibly due to preferential blood flow after BCPA. Patients with smaller pulmonary arteries at the beginning seem to benefit of a more effective pulmonary arteries growth. Accessory source of pulmonary blood flow at the BCPA still bares uncertain efficacy and benefits, even thought it seems to be associated with a better pulmonary artery growth, particularly left lower lobe, and better TCPC results.
Casoli, Vincent. "Un nouveau procédé de microanastomoses vasculaires par microagrafes métalliques." Bordeaux 2, 1995. http://www.theses.fr/1995BOR23043.
Повний текст джерелаNascimento, Ricardo Bolzam do. "Influencia da omentoplastia na anastomose colica de animais submetidos a choque hemorragico : estudo experimental em ratos." [s.n.], 2007. http://repositorio.unicamp.br/jspui/handle/REPOSIP/309843.
Повний текст джерелаDissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Ciencias Medicas
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Resumo: A cicatrização das anastomoses intestinais constitui motivo de grande preocupação na Medicina em razão das sérias conseqüências advindas das deiscências de sutura. Os riscos são acrescidos quando anastomoses são feitas em condições de adversidade, como imunossupressão, isquemia, infecção, uso de antiinflamatórios e quimioterápicos, diabetes, trauma, desnutrição, idade avançada etc. O choque hemorrágico também é citado entre essas situações desfavoráveis, causando dano bioquímico e histológico às anastomoses, não estando bem claros os efeitos ocasionados quanto à resistência mecânica. O uso do omento como proteção à linha de sutura também não é assunto resolvido. Este trabalho tem como objetivo avaliar, através do Teste Biomecânico de Pressão de Ruptura a Distensão por Líquido (TBPRDL) a influência do grande omento sobre a linha anastomótica em animais submetidos a choque hemorrágico. Os animais eleitos como avaliáveis para serem submetidos ao teste foram àqueles que chegaram vivos e com anastomoses íntegras no dia da eutanásia. Para serem obtidos 20 animais considerados como avaliáveis para o teste biomecânico, houve necessidade de se operar 63 ratos no total. Os animais foram submetidos ao choque controlado pela retirada de sangue através de cateter colocado na carótida direita. A mortalidade entre os grupos foi semelhante com respectivamente 41,3% e 41,1% nos grupos 1 e 2. O grupo 1 em que não foi realizada a omentoplastia sobre a anastomose, apresentou 19 casos de deiscência, sendo estes descartados. No grupo 2 não foi observado nenhum caso. Entre os dois grupos não houve diferença estatística entre os parâmetros como volemia, retirada volêmica, perda ponderal, dosagens do lactato e PAM durante o experimento. Quanto ao Teste Biomecânico de Pressão de Ruptura à Distensão por Líquido (TBPRDL) o grupo 2 apresentou anastomoses mais resistentes com valores de pressão de ruptura superiores (p=0,0539) mostrando significância quando comparado ao grupo controle (G 1). Conclui-se, portanto, que a proteção omental aumentou a resistência das anastomoses e o modelo de choque hemorrágico empregado neste experimento mostrou-se útil para o estudo da cicatrização de anastomoses submetidas a essa condição de adversidade
Abstract: Intestinal anastomoses cicatrisation is a major motive for worries in Medicine due to serious consequences stemmed from suture dehiscence. Added risks happen when anastomoses are done in adverse conditions, such as immunosuppression, ischemia, infection, use of anti-inflammatory and chemotherapy drugs, diabetes, trauma, malnutrition, old age, and so on. Hemorrhagic shock is also quoted among those harmful situations, causing biochemical and histological damage to anastomoses, being the effects to mechanical resistance not clarified yet. The employment of omentum as a protection to suture line is not a concluded issue as well. This research aimed to assess via the Biomechanical Test of Pressure of Rupture by Liquid Distension (BTPRLD) the influence of a large omentum on the anastomotic line in animals submitted to hemorrhagic shock. Animals chosen as possible to be tested were those alive and presenting undamaged anastomoses at euthanasia day. In order to obtain 20 animals viable for biomechanical test analysis, 63 animals were operated on. Animals were submitted to controlled shock via catheter inserted in the right carotid. Intergroup mortality was similar, 41,3% and 41,1% respectively to group 1 and 2. Group 1, which received no omentumplasty on anastomosis, presented 19 cases of dehiscence, which were discarded. No cases were observed in group 2. There was no statistically difference between groups in parameters such as voluming, voluming suppression, ponderal loss, lactate dosage and MAP during experiment. Concerning Biomechanical Test of Pressure of Rupture by Liquid Distension (BTPRLD), group 2 presented more resistant anastomoses, with higher rupture values (p=0,0539) showing significance when compared to control group (G1). It can be concluded that omental protection increased anastomoses resistance and that the hemorrhage shock model employed was useful to the study of cicatrisation of anastomoses submitted to that adverse condition
Mestrado
Cirurgia
Mestre em Cirurgia
Bernis, Filho Walter Octaviano. "Estudo comparativo da cicatrização entre os fios poliglecaprone, algodão e poliglactina em anastomoses de intestino delgado de cães." [s.n.], 2010. http://repositorio.unicamp.br/jspui/handle/REPOSIP/311383.
Повний текст джерелаTese (doutorado) - Universidade Estadual de Campinas, Faculdade de Ciências Médicas
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Resumo: Através dos anos muitos fios de sutura foram criados e, depois abandonados, em virtude dos bons resultados obtidos com novos fios. Ainda sim, até hoje não se encontrou um fio cirúrgico totalmente inócuo ao intestino, ou a outros tecidos de um modo geral, tornando sua escolha uma tarefa difícil. Justifica-se, a necessidade de pesquisa de novos materiais no intuito de se encontrar a opção ideal. Neste trabalho foi testado o fio poliglecaprone 25, nas anastomoses do intestino delgado de cão comparando com fios, tradicionalmente usados por outros autores na confecção de anastomoses intestinais, como os fios algodão e poliglactina 910. A cicatrização de anastomoses do intestino delgado foi avaliada, macroscópica e microscópicamente, utilizando três tipos de sutura distintos com os fios poliglecaprone 25, poliglactina 910 e o algodão. Vinte cães machos sem raça definida pesando entre 9 e 16 Kg foram submetidos, após anestesia geral inalatória, a três anastomoses no intestino delgado. A técnica empregada foi a extramucosa com pontos separados e utilizou-se, para cada uma, os fios poliglecaprone 25, a poliglactina 910 e o algodão. Os animais foram separados em 4 grupos de acordo com a avaliação do período pós-operatório: grupoI- 3 dias; grupoII- 7 dias; grupoIII- 14dias; grupo IV- 21dias. Após o período de observação, os animais foram submetidos a eutanásia para coleta de material para análise macroscópica e microscópica. Na avaliação macroscópica os três fios se comportaram bem, com boa coaptação das bordas, porém com moderado grau de aderência entre alças e epiploo, do 3º ao 21º dia do pós-operatório. A avaliação microscópica mostrou inflamação exsudativa com neutrófilos e fibrina que variou de discreta a moderada até o 14º dia; inflamação granulomatosa com presença de macrófagos, células gigantes multinucleadas e células epitelióides mais evidente ao 14º dia para o fio algodão; presença de tecido de granulação (fibroblastos) e fibras colágenas, de forma moderada, a partir do 7º dia para os três fios. Os três tipos de fios de sutura utilizados nesta pesquisa apresentaram comportamento semelhante e podem ser indicados em anastomoses do intestino delgado
Abstract: In this study was evaluate, macroscopically and microscopically, the healing process of intestinal anastomoses in dogs using polyglecaprone 25, polyglactin 910 and cotton sutures. Twenty mongrel dogs, weighting from 9 to 16 Kg were submitted, under general inhalatory anesthesia, to three small intestine anastomoses. The animals were divided into four groups, in accordance with the postoperative observation periods as follows: group I, three days; group II, seven days; group III, fourteen days; group IV, twenty one days. Extramucous technique was used, with those threads, in all four groups. After the observation period the animals were euthanized and samples from the operative site were collected for macroscopic and microscopic evaluations. Macroscopically, all three threads showed good behavior with good coaptation of the edges; however, there occurred a moderate level of adherence between loops of intestine and omentum, from day 3 to day 21, of postoperative period. Microscopically, there was exsudative inflammation, with neutrophils and fibrin, discrete to moderate until day 14. Granulomatous inflammation was also notice accompanied by macrophages, multinucleated giant cells and epithelioid cells, more evident on day 14 in the cotton group. Granulation tissue (fibroblasts) and collagen fibers were also observed, in a moderate pattern, for all three suture materials, from day 7. All three suture threads used in this research showed similar behavior and thus they can be indicated for anastomoses of the small intestine in dogs
Doutorado
Fisiopatologia Cirúrgica
Doutor em Ciências
Prado, Tales Dias do [UNESP]. "Ureterostomias cutânea e colônica em suínos: avaliação da exequibilidade das técnicas e complicações pós-operatórias." Universidade Estadual Paulista (UNESP), 2016. http://hdl.handle.net/11449/134345.
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Fundação de Amparo à Pesquisa do Estado de Goiás (FAPEG)
O aumento da expectativa de vida dos animais de companhia favorece a ocorrência de casos de câncer, como o de bexiga. De forma que, faz-se necessário dispor de alternativas que minimizem o sofrimento e melhorem a qualidade de vida desses pacientes após a remoção cirúrgica da bexiga. O objetivo da presente pesquisa foi avaliar a exequibilidade da técnica de ureterostomia cutânea em suínos após a realização da cistectomia total, quando comparada à técnica de ureterostomia colônica, assim como registrar e avaliar as alterações pós-operatórias. Foram utilizados 20 animais, distribuídos em dois grupos. Todos foram submetidos à cistectomia radical e, em seguida, a ureterostomia cutânea ou colônica. A exequibilidade das técnicas foi avaliada durante os procedimentos. Para tal observou-se o tamanho da incisão, o tempo de diérese, de realização da derivação urinária e o tempo de síntese, estimou-se a perda sanguínea e o grau de dificuldade na realização dos procedimentos de preparo dos ureteres, preparo do sítio de ureteroanastomose e realização da implantação ureteral. As avaliações clínicas foram realizadas durante 14 dias, quando foi realizada a eutanásia dos animais. Após a eutanásia foram realizadas avaliações macroscópicas dos rins, ureteres, dos sítios da derivação urinária e também foram feitas análises microscópicas dos rins e microbiológicas da urina. Os resultados indicam que a ureterostomia cutânea apresentou maior eficiência quando comparada à colônica nos quesitos perda de sangue, tamanho da incisão realizada e facilidade de realização da anastomose. Os tempos dos procedimentos realizados assim como o grau de dificuldade no preparo dos sítios de ureteroanastomose não diferiram entre si. Observaram-se óbitos espontâneos em 50% dos animais de cada grupo. Complicações clínicas como anorexia, dor à palpação abdominal, vômito e febre foram observadas entre os dias três e seis após as cirurgias e observou-se que a maioria dos animais com estas alterações morreram antes da eutanásia. Poucos animais apresentaram aumento sérico de creatinina, ureia, cálcio e fósforo. As avaliações macroscópicas incluíram hemorragia renal, pielonefrite, hidronefrose, dilatação da pelve, dilatação dos ureteres, falha na anastomose e uroperitônio. Os achados histopatológicos foram cilíndros hialinos intertubulares, nefrite, fibrose, pielonefrite, degeneração tubular, necrose, hemorragia, dilatação tubular e atrofia do parênquima renal, em ambos os grupos. A análise da urina permitiu identificar principalmente dois patógenos, E. coli e Staphylococcus spp. Não houve diferenças estatísticas entre grupos no período pós-operatório. Assim, concluiu-se, que ambas as técnicas podem ser indicadas como derivações urinárias viáveis e que a escolha dependerá de fatores intrínsecos ao cirurgião e ao paciente.
Increased life expectancy of pets favors the occurrence of cancer, such as the urinary bladder ones. In a way that, it’s important finding alternatives that minimize the pain and improve the quality of life of patients after surgical removal of the urinary bladder. The aim of this study was to evaluate the feasibility of cutaneous ureterostomy technique in pigs after the total cystectomy compared to the technique of colonic ureterostomy, as well as detect and characterize possible intraoperative complications. For that, 20 pigs were used, divided into two groups. All patients underwent radical cystectomy and then the cutaneous or colonic ureterostomies. The technical feasibility was assessed during the procedures. The procedures compared were: the incision size, dieresis time, realization of urinary diversion and the synthesis time. Also, the estimated blood loss and the degree of difficulty in performing the preparation procedures of the ureters, ureteroanastomose site preparation and ureteroanastomose itself were compared. The results indicate that cutaneous ureterostomy performimg was better than the colonic ureterostomy in relation to blood loss, incision size and anastomosis performing. In contrast, ureterocolonostomy showed better results on the implementation of ureteral preparation. The times of the procedures performed and the degree of difficulty in the preparation of ureteroanastomose sites did not differ. No animals died during surgery. Thus, it was concluded that both techniques can be indicated as viable urinary diversions and the choice will depend on factors intrinsic to the surgeon and the patient.
FAPEG: 102410267000033
Troubat, Hervé. "Résultats fonctionnels des anastomoses coloanales et colorectales après résection rectale pour cancer/." Bordeaux 2, 1999. http://www.theses.fr/1999BOR23014.
Повний текст джерелаVokrri, Lulzim. "Etude expérimentale des anastomoses vasculaires sans suture." Thesis, Université Grenoble Alpes (ComUE), 2017. http://www.theses.fr/2017GREAS007.
Повний текст джерелаCareddu, Lucio <1980>. "Il flusso accessorio all’intervento di anastomosi cavo-polmonare bidirezionale associato a plastica di allargamento delle arterie polmonari con high tech patch: ruolo della terapia combinata sulla crescita delle arterie polmonari." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2019. http://amsdottorato.unibo.it/8746/1/Tesi%20upload.pdf.
Повний текст джерелаFunctionally univentricular hearts form a group of congenital heart disease at high risk and surgical complexity. The current treatment consists in adopting a palliative surgical approach that involves several stages aimed at gradually separating the venous and arterial circulation, with the last stage represented by the Fontan intervention or total hollow-pulmonary anastomosis (TCPC). In this distortion of the normal physiology that transforms the flow from a "parallel" to a "serial" system, the intervention of bidirectional hollow-pulmonary anastomosis (BCPA) has become a mandatory step for the separation of the two circulations. In carrying out this retrospective study, we collected and analyzed the clinical, echocardiographic, hemodynamic and functional capacity of 98 patients undergoing BCPA at our center; we also evaluated the long-term outcome. Looking at the role of accessory flow and lung plastic with patches on the growth of remote pulmonary arteries, we have not seen significant differences. A sub-analysis performed on patients undergoing cardiopulmonary stress testing after TCPC showed no long-term outcome differences in both groups, confirming that there is no ventricular volume overload with both applied techniques.
Abou, Taam Salam. "Dispositifs de synthèse vasculaire : analyse, modélisation, applications au réseau artériel périphérique et aux fistules artérioveineuses pour abord d’hémodialyse : ouverture sur l’étude de nouveaux outils de réparation et modulation vasculaire." Electronic Thesis or Diss., Sorbonne université, 2019. http://www.theses.fr/2019SORUS582.
Повний текст джерелаThis study presents the physiological and pathological aspects of the arterial blood flow and draws up various methods of vascular repair. It focuses on innovative suture solutions for circulatory system repair. Various blood flow restoration strategies, retrieved from the surgical practice, were examined on the basis of a new digital model of the vascular network simplified into 55 arteries, in both 0D and 1D. We thus studied several techniques of blood flow restoration to the lower limb during an iliac artery obliteration, those based on different types of anatomical and extra-anatomical bypasses, but also one based on a stent being inserted in the original network. At each attempt, we found the flow to be restored downstream and congruent to the clinical observations, thus confirming our digital network. We have also applied its 0D tools to an arteriovenous fistula. With the aim of providing our model as a tool to assist the surgeon’s decision making, we then have adjusted various parameters in order to anticipate the repercussions of surgical procedures to treat both stenosis and hypertension
Brun, Antoine. "Troubles du métabolisme glucidique chez le cirrhotique avec shunt porto cave spontané." Montpellier 1, 1991. http://www.theses.fr/1991MON11212.
Повний текст джерелаGonzález, López José Antonio. "Determinación de la efectividad de los sellantes quirúrgicos en la mejora de la resistencia de las suturas de la vía biliar. Estudio en un modelo experimental animal." Doctoral thesis, Universitat Autònoma de Barcelona, 2015. http://hdl.handle.net/10803/377453.
Повний текст джерелаBile sutures represent a challenge for surgeons. The low surface tension of bile and frailty associated with poor tissue irrigation of the bile duct frequently cause bile leakage after this surgical technique. High intraluminal pressure in the biliary tract is one of the risk factors for the development of bile leakage post suturing. That is why bile leaks are more common if a bile duct obstruction is left without a drain as a decompression mechanism.,. The objective of this study is to demonstrate that the use of surgical sealants improve bile sutures resistance during increases in intraluminal pressure. We use an experimental animal model that aims to reduce the variability between patients with regard to their comorbidities and nutritional statuses in clinical practice. After suturing the gall bile duct of animals end to end (Rattus Norvegicus), we proceeded to indicate 4 separate groups; a control group and three groups to which different sealants were applied. Thrombin and fibrin gel, thrombin and fibrin sponge and cyanoacrylate sealant. After checking the resistance to intraluminal pressure of the different compounds, we conclude that all three products improve the resistance but the sponge thrombin and fibrin and cyanoacrylate are better. We also observed that the cyanoacrylate has an index of inflammatory fibrosis higher than the rest.
Castagnié, Jean-Paul. "Tétralogie de Fallot : étude rétrospective de 96 corrections primaires et de 32 corrections secondaires après anastomose de Blalock-Taussig." Bordeaux 2, 1995. http://www.theses.fr/1995BOR2M063.
Повний текст джерелаPeng, Jun. "Modélisation électrique de l'hémodynamique hépato-portale : application à la chirurgie assistée des anastomoses porto-caves." Saint-Etienne, 1993. http://www.theses.fr/1993STET001T.
Повний текст джерелаAvino, Alexandre. "Traqueoplastia em ratos : apresentação de modelo com suporte endoluminal." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2006. http://hdl.handle.net/10183/11365.
Повний текст джерелаIntroduction and objectives: This study has the objective to present a tracheoplasty model in rats, in spontaneous ventilation and using an intraluminal stent to secure quality and homogeneity to the suture. And this way offer an adequate substrate to compare different methods proposed to tracheal surgery. Material and methods: thirty male wistar rats, around 90 days of life were included in this study. Ten animals were used as pilots to the study. The last twenty animals were operated for clinical valuation and identification of collapse of the method. The fourth tracheal ring was removed with preservation of the membranous layer and after that the trachea was tubed by reversed way for modeling and confection of the tracheal suture. A tracheoplasty with running suture was accomplished and the tube was removed. The studied factor was the breathing pattern as post – operative period immediately as in the late it. Results: Only one animal had fatal respiratory failure immediately after the surgery. It was caused by the migration of the tracheal tube and this way, do not acting as a stent to the tracheoplasty. The other animals presented good clinical evolution. Conclusions: The proposed tracheoplasty model, evaluated by clinical parameters, presented viable and reproducible and can be used in several tracheal experiments.
TENÓRIO, Dyana de Albuquerque. "Diversidade genética e patogênica de Rhizoctonia solani do feijoeiro no Agreste Meridional de Pernambuco." Universidade Federal Rural de Pernambuco, 2011. http://www.tede2.ufrpe.br:8080/tede2/handle/tede2/6555.
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Rhizoctonia solani causes diseases on a range of hosts and one of the most important diseases on common bean and cowpea, known in Brazil as "rizoctoniose”, “mela” or “murcha da teia micélica”. This study aimed to characterize the genetic and pathogenic diversity of R. solani isolates obtained from common bean and cowpea with “rizoctoniose” symptoms in the Agreste Meridional of Pernambuco. Isolates of R. solani were evaluated regarding anastomosis groups (inferred from ITS rDNA phylogeny), morphology and pathogenicity. The genetic diversity was evaluated through the use of sequences of the ITS region of the rDNA. Fifty-seven isolates of R. solani were obtained from common bean and cowpea production areas. Colonies of the fungus isolated were initialy white, becoming brown or beige with age. The production of microsclerotia was observed only after 15 days of incubation. The growth rate of colonies ranged from 1.7 to 3.6 cm.day־¹. In the phylogeny using ITS rDNA the majority of isolates from commom bean and cowpea grouped together in the AG4 HG-I and one of cowpea grouped in AG2-2 IIIB. All isolates where patogenic to cowpea IPA-207 cultivar, showing severity levels from 40 to 92.8%. Thus, in the Agreste Meridional of Pernambuco, the “rizoctoniose” of cowpea and common bean is caused mainly by Rhizoctonia solani AG4 HG-I
Rhizoctonia solani apresenta vasta gama de hospedeiros e causa uma das principais doenças do feijoeiro, conhecida como rizoctoniose, mela ou murcha da teia micélica. Este estudo objetivou caracterizar a diversidade genética e patogênica de isolados de R. solani de plantas de feijão-caupi e feijão-comum com sintomas de rizoctoniose, coletados em áreas de produção no Agreste Meridional de Pernambuco. Foram avaliadas a morfologia e a patogenicidade dos isolados de R. solani. Foi realizada a caracterização genética utilizando seqüências gênicas da região ITS do rDNA e inferidos os grupos de anastomose. Dentre os 57 isolados de R. solani incluidos no estudo a maioria apresentou colônias de cor inicialmente branca, que tornavam-se marrom ou bege com o envelhecimento da colônia. A formação de microesclerócios somente foi observada após 15 dias. A taxa de crescimento micelial variou entre 1,7 e 3,6 (cm.dia־¹). Na análise filogenética na qual utilizou-se a região ITS do rDNA a maior parte dos isolados de feijão-caupi e feijão-comum agrupou no grupo de anastomose AG4 HG-I e um isolado de feijão-caupi no grupo AG2-2 IIIB. Todos os isolados foram patogênicos ao feijão-caupi cultivar IPA-207, com níveis de severidade entre 40 e 92,8%. Portanto, no Agreste Meridional a rizoctoniose do feijão-caupi e do feijão-comum é causada principalmente pelo grupo AG4 HG-I de R. solani.
Mallier, Nathalie. "Anastomose porto-sus-hépatique par voie transjugulaire : étude rétrospective à propos de 69 patients consécutifs." Bordeaux 2, 1996. http://www.theses.fr/1996BOR23063.
Повний текст джерелаKalawon, Ramesh. "Traitement de la maladie post-thrombotique fémorale par transposition saphéno-poplitée : à propos de 9 cas." Bordeaux 2, 1995. http://www.theses.fr/1995BOR2M169.
Повний текст джерелаRocha, Antonio Angelo. "Estudo da oxigenoterapia hiperbarica sobre a resistencia mecanica das anastomoses colicas na presença de peritonite induzida por função e ligadura cecal = trabalho experimental em ratos." [s.n.], 2010. http://repositorio.unicamp.br/jspui/handle/REPOSIP/309845.
Повний текст джерелаTese (doutorado) - Universidade Estadual de Campinas, Faculdade de Ciencias Medicas
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Resumo: A cicatrização das anastomoses intestinais depende de fatores locais e sistêmicos. A peritonite é fator importante que pode alterar a cicatrização das anastomoses no intestino. A hiperóxia hiperbárica (HBO) consiste na inalação de oxigênio a 100% em pressão superior à atmosférica. OBJETIVO: Analisar o efeito da oxigenoterapia hiperbárica sobre a resistência mecânica de anastomoses realizadas em cólon distal de ratos na presença de peritonite induzida por ligadura e punção cecal utilizando o teste biomecânico de Energia Total de Ruptura (ETR). MATERIAL e MÉTODO: Foram utilizados 45 ratos distribuídos em três grupos de 15 animais. No Grupo Controle (GC), realizou-se anastomose no cólon distal sem peritonite. No Grupo Peritonite (GP), realizou-se anastomose seis horas após a indução da peritonite por ligadura e punção cecal. No Grupo Câmara Hiperbárica (GCH), realizou-se anastomose seis horas após a indução da peritonite por ligadura e punção cecal. Os animais dos GC e GP foram mantidos em ar ambiente. Os animais do GCH foram colocados em uma câmara hiperbárica experimental para inalarem oxigênio a 100%, a duas atmosferas absolutas, durante 120 minutos, por quatro dias consecutivos. A eutanásia ocorreu no quinto dia do experimento. Todos os animais foram submetidos ao Teste de Resistência Biomecânico Energia Total de Ruptura (ETR). A Energia Total de Ruptura foi definida como a energia interna acumulada necessária para promover o rompimento do cólon após a imposição de uma força externa de tração. RESULTADOS: O Grupo Peritonite apresentou menor média de ETR que o Grupo Controle. Não houve diferença estatística entre o Grupo Peritonite e o Grupo Câmara Hiperbárica. CONCLUSÃO: A oxigenoterapia hiperbárica não alterou a resistência mecânica de anastomoses realizadas no cólon distal de ratos na presença de peritonite induzida por ligadura e punção cecal
Abstract: The cicatrization of bowel anastomosis depends on local and systemic factors. Peritonitis is an important factor that can alter the cicatrization of anastomosis in bowels. The HBO consists of inhaling oxygen at 100% under a pressure greater than the surrounding atmosphere. PURPOSE: To analyze the effect of hyperbaric oxygen therapy on the mechanical resistance of the anastomosis in the distal colon of rats in the presence of peritonitis induced by cecal ligation and puncture using the Total Energy Rupture biomechanical test (ETR). MATERIAL and METHOD: We used 45 rats divided into three groups of 15 animals. In the Control Group (CG) distal colon anastomosis was carried out without peritonitis. In the Peritonitis Group (GP), anastomosis was carried out six hours after the induction of peritonitis by cecal ligation and puncture. In the Hyperbaric Chamber Group (GCH), anastomosis was carried out six hours after induction of peritonitis by cecal ligation and puncture. The animals in the study and control groups were kept in environmental air. The GCH animals were placed in an experimental hyperbaric chamber to inhale 100% oxygen, at two absolute atmospheres for 120 minutes, for four consecutive days. Euthanasia occurred on the fifth day of the experiment. All animals were submitted to the Total Energy Rupture biomechanical test (ETR). The Total Energy Rupture was defined as the accumulated internal energy necessary to promote the rupture of the colon after the imposition of an external force of traction
Doutorado
Pesquisa Experimental
Mestre em Cirurgia
Camargo, Michel Gardere 1979. "Influência da lavagem peritoneal com bupivacaína na mortalidade e na resistência de anastomose cólica em vigência ou não de peritonite fecal : estudo experimental em ratos." [s.n.], 2014. http://repositorio.unicamp.br/jspui/handle/REPOSIP/312874.
Повний текст джерелаDissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Ciências Médicas
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Resumo: A ocorrência de deiscência de anastomose intestinal está associada com aumento do tempo de internação, morbimortalidade, necessidade de reoperações, custos de assistência médico-hospitalar e sofrimento do paciente. O conhecimento dos mecanismos envolvidos na cicatrização de tecidos permite o cirurgião interferir no reparo de tecidos, prevenindo e prevendo complicações. Nosso objetivo foi avaliar os efeitos da lavagem peritoneal com bupivacaína na mortalidade e na cicatrização da anastomose em cólon descendente de ratos, em vigência de peritonite fecal ou não. Foram utilizados quarenta ratos machos Wistar, pesando entre 300-350g, distribuídos aleatoriamente em quatro grupos de dez animais cada. Foi realizada laparotomia e anastomose em cólon descendente seis horas após injeção intraperitoneal de solução fisiológica (SF) ou de fezes autólogas. Grupo 1: sem peritonite e lavagem com 3ml de SF; Grupo 2: Sem peritonite e lavagem com 8 mg/kg de bupivacaína a 0,5% (0,5ml) adicionado a 2,5ml de SF; Grupo 3: Peritonite e lavagem com 3ml de SF; Grupo 4: Peritonite e lavagem com 8 mg/kg de bupivacaína a 0,5% (0,5ml) adicionado a 2,5ml de SF. Os animais que evoluíram para óbito foram submetidos a necropsia. A eutanásia e o teste biomecânico de Energia Total de Ruptura (ETR) foram realizados no quinto dia de pós-operatório dos animais sobreviventes. O grupo 4 apresentou maior sobrevida quando comparado ao Grupo 3, sem significância estatística. O grupo 3 apresentou valores de ETR menores que os dos outros grupos, com significância estatística. Concluímos que a peritonite fecal aumentou a mortalidade e influenciou negativamente a anastomose em cólon descendente de ratos, diminuindo sua resistência intrínseca. A lavagem peritoneal com bupivacaína aumentou a resistência da anastomose em cólon descendente de ratos em vigência de peritonite fecal
Abstract: Ocurrence of intestinal anastomotic dehiscence is associated with significant increase of length of stay, morbidity, mortality, need of reoperations, healthcare costs and patient's distress. The knowledge on the mechanisms involved in tissue healing allows the surgeon to interfere on tissue healing, prevent and anticipate complications. Our purpose was to evaluate the effects of peritoneal lavage with bupivacaine on survival and initial healing of anastomosis on distal colon, performed under peritonitis or not. Forty male Wistar rats, weighing from 300 to 350g, were randomly divided in four groups and underwent laparotomy and anastomosis on the distal colon six hours after intraperitoneal injection of physiological solution (NS) or autologous fecal material. Group 1: No peritonitis and lavage with 3ml NS; Group 2: No peritonitis and lavage with 0.5ml of 0.5% bupivacaine (8mg/kg) added to 2.5 mL of NS; Group 3: Peritonitis and lavage with 3ml NS; Group 4: Peritonitis and lavage with 0.5ml of 0.5% bupivacaine (8mg/kg) added to 2.5 mL of NS. Necropsies were performed on the animals that died. Surviving animals were submitted to euthanasia and Total Energy of Rupture (TER) biomechanical test on the fifth post-operative day. Group 4 showed survival increase compared to Group 3, without statistical significance. Group 3 presented the smallest average TER, with statistical significance. We concluded that fecal peritonitis increased mortality and negatively influenced anastomosis performed on descending colon in rats, decreasing its resistance. Peritoneal lavage with bupivacaine increased the resistance of colic anastomosis performed on descending colon in rats under fecal peritonitis
Mestrado
Fisiopatologia Cirúrgica
Mestre em Ciências
Mora, Sara Cristina Farrajota. "Resolução cirúrgica de cólicas em equinos : critérios, desenvolvimento e pós-operatório." Bachelor's thesis, Universidade Técnica de Lisboa. Faculdade de Medicina Veterinária, 2009. http://hdl.handle.net/10400.5/1153.
Повний текст джерелаA cólica em equinos é um dos principais receios de quem lida com esta espécie. Apesar dos avanços científicos e do aumento da taxa de sobrevivência em animais sujeitos a cólica complicada ou mesmo a resolução cirúrgica da mesma, as cólicas são um problema que continua actualmente a liderar as causas de morte em cavalos. O trabalho que se apresenta tem como principais objectivos explicar de forma simples e clara os principais critérios a ter em conta para o encaminhamento de um animal para cirurgia. Descreve as técnicas cirúrgicas mais frequentemente utilizadas para resolução de cólicas em equinos, bem como as principais particularidades anestésicas. São descritos alguns protocolos medicamentosos pós-cirúrgicos e alguns cuidados a ter com os pacientes, e as principais complicações pós-cirúrgicas e algumas das suas consequências. Os critérios utilizados incluem a avaliação do exame geral do paciente, constituído pela observação do mesmo e pelo exame físico. Para além do exame geral podem ser necessários exames laboratoriais para análise do líquido peritoneal e de parâmetros sanguíneos ou mesmo exames ecográfico, radiológico, endoscópico ou laparoscópico. A aproximação cirúrgica a um cavalo com cólica é geralmente realizada através de laparotomia pela linha média ventral e de acordo com o tipo de cólica presente, assim os procedimentos cirúrgicos realizados em seguida. Vários cuidados na preparação pré-cirúrgica do paciente e nos procedimentos cirúrgicos em si, estão relacionados com possíveis complicações (aderências, laminite, ileo pós-cirurgico ou problemas incisionais) e com a taxa de sobrevivência dos animais pós-cirurgicamente. A medicação pós-operatória e a alimentação do animal são pontos fulcrais na recuperação cirúrgica do paciente e vários protocolos estão descritos. O presente estudo foi complementado com a descrição dos procedimentos utilizados na Clínica Hípica (Porto Alegre, Brasil) perante pacientes com cólica cirúrgica e ainda com o relato de 6 casos clínicos observados durante o estágio curricular realizado na mesma. Em 37 laparotomias realizadas na Clínica Hípica de nove de Maio de 2008 a sete de Maio de 2009, 73% foram realizadas com sucesso e todos os pacientes sobreviveram no curto período pós-operatório avaliado. Não foi frequente a ocorrência de complicações póscirurgicas, reflectindo uma boa técnica cirúrgica e anestésica, assim como um protocolo medicamentoso, adequado.
ABSTRACT - Surgical Resolution of Colic in Horses – Criteria, Development and Post-surgical - Colic in horses is one of the main fears of those who deal with this species. Despite the scientific advances and increased survival rate in animals subjected to complicated colic or even to surgery resolution of colic, this is a problem that up to date is the leading cause of death in horses. The present work, intends to explain the main criteria used to refer a colickly horse for surgery. It describes the most commonly used surgical techniques for resolution of colic in horses as well as the main anesthetic procedures. This study presents some post-surgical medication protocols and some cares needed with the patients. It also introduces the major post-surgery complications and some of its consequences. The used criteria include the evaluation of the general examination of the patient, consisting in observation and in physical examination. In addition, laboratory tests as peritoneal fluid and blood parameters analysis or ultrasound, radiological, endoscopic or laparoscopic examination, may be needed. The surgical approach to a horse with colic is usually performed through laparotomy in the ventral midline and in accordance with the present type of colic, the other surgical procedures needed, are then selected. Several preliminary care in the preparation of surgical patients and the surgical procedures themselves are related to possible complications (adhesions, laminitis, post-surgical ileum or incisional problems) and to the survival rate of animals in the post-surgery. The post-operative medication and feeding are key points in the recovery of surgical patients and several protocols are described. The present study was complemented with the description of the procedures used in Clínica Hípica (Porto Alegre, Brazil) to patients with colic surgery and with the presentation of 6 cases observed during the internship performed in the same clinic. In 37 laparotomies performed in the Clínica Hípica between nine of May of 2008 and seven of May of 2008, 73% were successful and all those pacients have survived in the short postoperative time. The occurrence of post-surgical complications was not very frequent, reflecting a good surgical and anesthesic technique, and an appropriate medical protocol.
Vance, C. A. "Laser assisted vascular anastomosis." Thesis, University of Strathclyde, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.382424.
Повний текст джерелаDelbes, Olivier. "Anastomose porto-cave intra-hépatique par voie transjugulaire dans le traitement de l'hydrothorax hépatique : (Etude à partir de 4 observations cliniques)." Bordeaux 2, 1998. http://www.theses.fr/1998BOR2M013.
Повний текст джерелаVives, Patricia Silva. "Transposição uretral pré-púbica mediante secção peniana em cães. Estudo experimental e clínico." Universidade Federal de Santa Maria, 2016. http://repositorio.ufsm.br/handle/1/11310.
Повний текст джерелаUrethral stenosis is still a challenge for urological surgeons even though there are several corrective techniques in humans. In veterinary medicine there are few alternatives, especially in dogs affected by extensive intra-pelvic lesions and the usual treatment in the clinical routine is prepubic urethrostomy, a procedure related to several complications. Before research aimed at describe an innovative surgical technique of prepubic urethral transposition to restore urinary flow interrupted by stenosis of extensive segments of the membranous urethra in adult male dogs. This study was developed in two stages that occurred concomitantly. In one of the stages, 18 adult male dogs from Hospital de Clínicas Veterinaria of the Universidade Federal de Pelotas (HCV/UFPel) were used. The surgical technique consisted initially of orchiectomy, followed by celiotomy, transverse section of the penis in the pre-scrotal region and transposition into the abdominal cavity making anastomosis to the prostatic urethra. In this stage, the feasibility of the technique, surgical time, description of the anatomical planes discussed, pre and postoperative length of the urethra were evaluated, and then submitted to retrograde contrast-enhanced urethrocystography for evaluation of anastomosis effusion, urethral diameter and constriction in the anastomosis. In the other stage, the same surgical technique was applied to six male dogs treated at the HCV/UFPel, which were affected by extensive stenosis of the intra-pelvic urethra, with prepubic urethral transposition as an alternative to prepubic urethrostomy and genitalia ablation external. These six dogs were evaluated clinically and by urethrocystographies with intervals between seven and 48 XX months post-procedure, none of which presented voiding or stenosis images. It is concluded that the prepubic urethral transposition is a feasible technique in dogs, effective in maintaining the diameter and sealing of the anastomosis, giving a new urethral pathway to restore the urinary flow.
A estenose uretral ainda é um desafio para os cirurgiões urológicos ainda que existam diversas técnicas corretivas em humanos. Na medicina veterinária há poucas alternativas, principalmente em cães acometidos por lesões intrapélvicas extensas e o tratamento usual na rotina clínica é a uretrostomia pré-púbica, procedimento relacionado a diversas complicações. Diante disso, o objetivo deste trabalho é propor e descrever uma técnica cirúrgica inovadora de transposição uretral pré-púbica para restituir o fluxo urinário interrompido por estenose de segmentos extensos da uretra membranosa em cães machos adultos. Este estudo foi desenvolvido em duas etapas que ocorreram de forma concomitante. Em uma das etapas, utilizou-se 18 cadáveres de cães machos adultos oriundos do Hospital de Clínicas Veterinária da Universidade Federal de Pelotas (HCV/UFPel), cuja técnica cirúrgica consistiu inicialmente pela orquiectomia, seguida de celiotomia retroumbilical, secção transversa do pênis na região pré-escrotal e transposição deste em direção à cavidade abdominal fazendo-se anastomose à uretra prostática. Nesta etapa avaliou-se a exequibilidade da técnica, tempo cirúrgico, descrição das estruturas anatômicas abordadas, comprimento pré e pós-operatório da uretra, a seguir, foram submetidos a uretrocistografia retrógrada com contraste positivo para avaliação de derrame na anastomose, diâmetro uretral e constrição na anastomose. Na outra etapa, a mesma técnica cirúrgica foi aplicada em seis cães machos atendidos no HCV/UFPel acometidos por estenose extensa da uretra intrapélvica, fazendo-se a transposição uretral pré-púbica como alternativa à uretrostomia pré-púbica e ablação da genitália externa. Os cães foram avaliados clinicamente e por uretrocistografias com intervalos entre sete e 48 meses após o procedimento, sendo que nenhum apresentou alteração do jato miccional ou imagens de estenose. Conclui-se que a transposição uretral pré-púbica é uma técnica exequível em cães, eficaz na manutenção diâmetro e no selamento da anastomose, conferindo um novo trajeto uretral para restituir o fluxo urinário.
Sanfront, Fernanda de Azevêdo. ""Resultados das anastomoses término-terminais e látero-laterais no tratamento da enterite de Crohn"." Universidade de São Paulo, 2006. http://www.teses.usp.br/teses/disponiveis/5/5154/tde-16102006-100212/.
Повний текст джерелаAround 70% of patients with ileal Crohn´s disease will be submeted to a surgical procedure during their lives. This study compares the recurrence rates and morbidity between surgeries followed by a wide-lumen stapled anastomosis and conventional endto-end anastomosis. We studied 185 surgical procedures in a retrospective analyses. There were 84 procedures followed by an end-to-end anastomosis and the recurrence rate was 47,6%.Among the 101 wide-lumen stapled anastomosis procedures, only 6 patients had to be submeted to a new surgery. We conclude that the enterectomy followed by a wide-lumen stapled anastomosis is the gold standard surgery for patients with ileal Crohn´s disease.
Arya, Shobhit. "Tissue fusion for bowel anastomosis." Thesis, Imperial College London, 2016. http://hdl.handle.net/10044/1/59071.
Повний текст джерелаDuminy, Francois J. "A new microvascular sleeve anastomosis." Master's thesis, University of Cape Town, 1989. http://hdl.handle.net/11427/26277.
Повний текст джерелаKock, Kaiser de Souza. "Anastomose colorretal por duplo grampeamento." Florianópolis, SC, 2004. http://repositorio.ufsc.br/xmlui/handle/123456789/87434.
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Introdução: A verificação dos anéis após a sutura mecânica é de rápida e simples execução e sua integridade é um dos critérios de segurança da anastomose.
Carrasco, Ana Lúcia Granja Scarabel Nogueira. "Influência da invasão tumoral da linha de anastomose na sobrevivência de pacientes com câncer de coto gástrico." Universidade de São Paulo, 2008. http://www.teses.usp.br/teses/disponiveis/5/5154/tde-13102008-104546/.
Повний текст джерелаThe objectives of this study are to identify the metastatic pattern of lymph node for gastric stump cancer; to quantify the invasion of anastomotic site by tumor; to relate the invasion of anastomotic site with metastasis lymph node or mesenterial lymph node and these parameters with the survival of patients with gastric stump cancer. One hundred and thirteen patients with gastric stump cancer were retrospectively analyzed along with their medical records, surgical pieces and histopathologic exam. The metastatic pattern of lymph node isnt specific to gastric stump cancer. 75% of patients had tumoral invasion in the anastomotic site. In 66.7% of the cases there was an invasion of the anastomotic site with metastatic lymph nodes. 9% of patients had mesenterial lymph node invasion by tumor. Fatal cases occurred in 86,5% of the patients with metastatic lymph node, 64,7% with invasion of the anastomotic site and 100% with mesenterial lymph node invasion.
Lionço, João Domingos. "Efeito da oxigenoterapia hiperbárica na cicatrização da anastomose esôfagojejunal : estudo experimental em ratos." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2006. http://hdl.handle.net/10183/11403.
Повний текст джерелаPurpose: To evaluate the effect of the hyperbaric oxygen therapy on the healing of the esophagojejunal anastomosis in gastrectomized rats. Material and Methods: 40 Wistar rats male adults with weighing between 322g to 506g were operated. The animals were divided in two ramdom groups.20 rats from group A (control group), were submitted to total gastrectomy. In group B, 20 rats were equally gastrectomized and received postoperative treatment with hyperbaric oxygen for 90 minutes/day during seven days. All rats were sacrificed on the eighth postoperative day and evaluated according to the following study variables :a) whether there were any anastomotic fistula or not; b) evaluating esophagojejunal anastomosis healing by measuring breaking strength at the suture line as per Hendriks & Mastboom; c) determining of the collagen concentration on the anastomosis, as per Kovács criteria. For the comparative statistical analyses between the groups, Student’s “t” test was used, whereas p<0,05 was significant. Results: There was a 20% rate of deceasing in the sample, whereas 60% occurred in group A and 40% in group B (p=N.S.). There was only one anastomotic fistula in each group, and in neither one occurred any morbidity or deaths related. Breaking strength measured at the suture line (p=0,528) and collagen concentration determined at the esophagojejunal anastomosis (p=0,89) did not present any significant statistical difference in either group. Conclusions: By using clinical, mechanical and biochemical parameters to evaluate the esophagojejunal anastomosis, it was possible to conclude that, in this study, hyperbaric oxygen therapy did not interfere with the healing process of the anastomosis.
Bowen, Clifford Vaughan Alisby. "Adhesive microvascular anastomoses." Thesis, University of Edinburgh, 1991. http://hdl.handle.net/1842/23735.
Повний текст джерелаPoussard, Emmanuel. "La chimioembolisation et les complications artérielles anastomotiques des greffes hépatiques." Bordeaux 2, 1999. http://www.theses.fr/1999BOR23031.
Повний текст джерелаChow, Shew-ping, and 周肇平. "Factors affecting the patency in microvascular anastomosis." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1988. http://hub.hku.hk/bib/B31979531.
Повний текст джерелаCunha, Vanessa Susana Gonçalves da. "Hemodinâmica na anastomose arterial da placenta humana." Master's thesis, Faculdade de Ciências e Tecnologia, 2013. http://hdl.handle.net/10362/10991.
Повний текст джерелаA placenta humana é o órgão materno-fetal que assegura as trocas nutritivas, metabólicas e gasosas entre o organismo materno e o feto de modo a garantir o desenvolvimento fetal adequado. Sabe-se que as patologias nos topos do cordão – feto e placenta – estão associadas a alterações do fluxo sanguíneo no cordão umbilical, com subsequentes modificações na morfologia normal do cordão. A parte inicial deste projecto, realizada nas instalações do Departamento de Anatomia da Faculdade de Ciências Médicas, consistiu num estudo da variabilidade morfológica da Anastomose de Hyrtl e da circulação feto-placentar, bem como a sua análise estatística, de modo a estabelecer um modelo comum de circulação. Após a concepção deste modelo, foram modificados parâmetros anatómicos da Anastomose de Hyrtl, nomeadamente o seu comprimento, a sua inserção e o ângulo formado com as artérias umbilicais, de modo a contemplar a variabilidade morfológica observada nos modelos placentares estudados. Na segunda parte do trabalho, decorrida na Faculdade de Ciências e Tecnologia, procedeu-se ao cálculo das variáveis hemodinâmicas: fluxo, velocidade, pressão e resistência, ao longo de toda a árvore arterial feto-placentar, através da aplicação das equações fundamentais da Hemodinâmica e das suas simplificações. Com o auxílio do programa ANSYSR-CFX, foram realizadas simulações numéricas sob os modelos de circulação desenvolvidos. Este software, permitiu a recolha de informação tridimensional das variáveis em estudo deste sistema vascular, complementando deste modo os cálculos realizados. O estudo, elaborado sob uma perspectiva integradora e holística permitiu verificar correlação forte entre o fluxo da face corial da placenta e o ângulo vascular entre a Anastomose de Hyrtl e as artérias umbilicais. A resistência vascular equivalente apresenta também uma relação linear com o comprimento e localização da Anastomose de Hyrtl. Os resultados obtidos no presente estudo sustentam a hipótese de um papel funcional da anastomose arterial na redistribuição do fluxo em casos de existência das artérias umbilicais discordantes.
Fabiani, Pascal. "Anastomose caeco-rectale apres colectomie sub-totale." Nice, 1989. http://www.theses.fr/1989NICE6011.
Повний текст джерелаChow, Shew-ping. "Factors affecting the patency in microvascular anastomosis." [Hong Kong : University of Hong Kong], 1988. http://sunzi.lib.hku.hk/hkuto/record.jsp?B12367047.
Повний текст джерелаRocha, Bruno da Costa. "Remodelamento tardio da artéria torácica interna bilateral na revascularização do miocárdio: Influência do leito coronariano esquerdo." Universidade de São Paulo, 2006. http://www.teses.usp.br/teses/disponiveis/5/5156/tde-16102014-101136/.
Повний текст джерелаInternal thoracic artery grafts has demonstrated capacity for remodeling due to interaction with the coronary artery bed. The goal was to analysis the influence of clinical and angiographic factors in this remodeling as defined as grafts caliber variation. Methods: In a period from 1983 to 1999, 356 patients underwent to coronary artery bypass surgery using the left internal thoracic artery anastomosed to interventricular anterior branch and the right internal thoracic artery to circumflex branches. Thirty two patients were submitted to postoperative coronary angiography which was further analysed by CASS II® software. The mean follow-up of this observational study was 42 months(6- 204 months). Angiographic variables analyzed was proximal and distal diameters of arterial grafts(dependent variable), coronary area, TIMI flow grade, proximal stenosis diameter, dominant distal flow and patent branches. Cardiovascular risk factors were included indeed. Results: The multiple regression model demonstrated R2adjusted=0.69 (p=0.0001) for right side and R2adjusted=0.46 (p=0.002) for left side. The grafts presented proximal and distal diameters of 2.67mm ±0.085 and 2.232mm ±0.085 from left side; 2.458mm ±0.088 and 2.010mm ±0.091 (mean±SE) from right side respectively (p > 0,05). None of the clinical variables had statistical significant correlation. The coronary area presented as a beta coefficient=0.42 (0.14-0.6/CI-95%) and proximal stenosis diameter of 0.55 (0.40-0.65/CI-95%) for right side remodeling. The coronary area shown a beta coefficient=0.54 (0.3- 0.68/CI-95%) for left side remodeling. Conclusions: The internal thoracic artery did not demonstrate difference in caliber about its laterality (left vs right). The proximal stenosis degree of the bypassed coronary artery demonstrated positive correlation with remodeling for the right side grafts. Bilateral grafts remodeling was only explained by positive correlation with the bypassed coronary area
Carneiro, Luciano Jannuzzi. "Análise do grau de lesão obstrutiva coronária e sua correspondente parede miocárdica como fatores preditivos de perviedade e remodelamento da artéria radial na revascularização do miocárdio." Universidade de São Paulo, 2009. http://www.teses.usp.br/teses/disponiveis/5/5156/tde-22032010-181455/.
Повний текст джерелаThe radial artery (RA) is an invaluable option for coronary artery bypass grafting (CABG), since its re-introduction in the late 1990 s.The objective of this study was to assess patency and remodeling of RA grafts regarding the interference of pre-operative coronary obstruction and grafted myocardial wall, also observing the internal thoracic artery grafts (ITA). METHODS: Between 1994 and 2007, 3,964 patients were operated with RA grafts, at Heart Institute, University of São Paulo, Brazil. Post-operative coronary angiographies (12 months)of 100 patients were obtained, including 11 patients with two post-op exams, at different periods. In 92 patients the ITA was also used.The grafts medium diameters were obtained using the CASS-II® software. RESULTS: Mean time of post-op angiography was 70,53 ±33,18 months. In 82 cases (82,0%) the RA grafted a single coronary, more frequently (50,83%) the left marginal (LM) or posterior ventricular (PV) branches. Pre-op obstructions between 90 and 99% were more prevalent (39,0%). Patency was of 80 cases for the RA (80,0%) and 80 cases for the ATI grafts (86,96%). There was a correlation between more severe pre-op obstructions and greater patency of the RA grafts (p=0,024). The mean diameters were 2,302mm ±0,479 (RA) and 2,262mm ±0,409 (ITA). RA diameters were above the mean value (>2,30mm) in pre-op obstructions of 100%, compared to the rest (p=0,017). The RA grafting the lateral wall showed the larger diameters, compared to the rest (p=0,04). For the 11 patients with 2 post-op angiographies, mean diameters of RA grafts were: 2,482mm ±0,424 (first) and 2,599mm ±0,532 (second)(p=n/s). For ITA grafts, mean diameters were: 2,308mm ±0,459 (first) and 2,326mm ±0,531 (second)(p=n/s). For the second angiographies, RA grafts exhibited larger diameters, related to pre-op obstructions between 90 and 100% (p=0,013). The grafted myocardial wall showed no interference with graft diameter. CONCLUSIONS: Pre-op coronary obstruction interferes in patency and diameters of RA grafts, more evidently for obstructions of 90% or greater. The grafted myocardial wall does not interfere with RA patency, although it does interfere with graft diameter. Remodeling was observed in RA grafts, correlating greater pre-op coronary obstructions and more evident increase in graft diameter similarly to the ITA grafts.
Putman, Léon Michel [Verfasser]. "Anatomic correction of transposition of the great arteries with a physiological, spiral anastomosis of the great vessels : construction of a model and in-vitro results of the anastomoses / Léon Michel Putman." Lübeck : Zentrale Hochschulbibliothek Lübeck, 2015. http://d-nb.info/1071509470/34.
Повний текст джерелаNoe͏̈l, Patrick. "Résection-anastomose du grêle sous coelioscopie : résultats préliminaires d'une étude expérimentale comparative entre anastomose mécanique et manuelle chez le porc." Montpellier 1, 1992. http://www.theses.fr/1992MON11225.
Повний текст джерелаSaito, Mateus. "O desenho da alça vascular arteriovenosa não interfere na sua patência: estudo experimental na pata de coelho." Universidade de São Paulo, 2016. http://www.teses.usp.br/teses/disponiveis/5/5140/tde-06032017-105325/.
Повний текст джерелаIntroduction: the vascular loops can provide adequate blood supply to a microsurgical flap in an unfavorable bed as open fracture or irradiated area after resection of tumors. Although performed in clinical practice, there is a lack of studies showing which factors are responsible for their success. Objective: To evaluate, in rabbits, which is the influence in the presence of flow (patency) of femoral vein loop design in anastomosis of the femoral artery after seven days. Method: Thirty-nine rabbits were subjected to arteriovenous microanastomosis with microsurgical technique. The loops were accommodated in two designs, one named \"circular\" and the other, the more elongated possible without folds. The parameters evaluated were: presence or absence of flow, hemolysis, hemodynamic changes suffered by vein submitted to blood pressure. Results: After seven days, the flow was present in 68% of angled loops and 75% of the \"circular\" loops (p > 0.05). There was intra-group, statistically significant decrease in the pCO2 and statistically significant increase in pH. There was no statistically significant difference in the rest of the parameters evaluated between the two loop models. Conclusion: The design of arteriovenous vascular loops in the rabbit paw does not interfere with its patency over a period of seven days
Brown, Robert James. "Measurement of colonic anastomotic blood flow by the hydrogen clearance technique." Thesis, Queen's University Belfast, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.335964.
Повний текст джерелаGaudette, Glenn R. "Measuring strains in the vicinity of an anastomosis." Thesis, Georgia Institute of Technology, 1992. http://hdl.handle.net/1853/17295.
Повний текст джерелаBonney, Nora Anne [Verfasser], and Voker [Akademischer Betreuer] Fendrich. "Wertigkeit der Luftprobe nach (Stapler-)Anastomosen bei kolorektalen Anastomosen / Nora Anne Bonney ; Betreuer: Voker Fendrich." Marburg : Philipps-Universität Marburg, 2018. http://d-nb.info/1169312144/34.
Повний текст джерелаChaker, Abdelbadia. "Contribution à la conception et l'optimisation des systèmes haptiques." Thesis, Poitiers, 2012. http://www.theses.fr/2012POIT2311/document.
Повний текст джерелаThe aim of this work is to develop a new haptic interface to perform a minimally invasive surgery. The targeted anastomosis technique consists of the surgical binding of a ruptured blood vessel, using sutures and knots. This task is performed by surgical tools inserted through small incisions. An experimental study of this task was conducted in collaboration with surgeons in order to characterize their gesture. The recording of the operation by a motion capture system helped identifying the nature and the canonical actions of this technique. A spherical parallel mechanism (SPM) was then adopted as a basis for the haptic interface. This architecture has a fixed center of rotation similar to the real incision point and offers the three required degrees of freedom of rotation around that point. A detailed study of the architecture followed by an optimization procedure led to a suitable mechanism for the surgical application. The optimization, which is based on a generic algorithm, used the workspace of the task as a criterion. Then the dexterity of the structure was taken into account. A design phase based on the parameters resulting from this optimization led to building the first prototype.The influence of manufacturing errors on the orientation of the platform was also addressed in this work to determine the ranges of allowable defects. The manufacturing errors are modeled by screws of small displacement in order to determine their effect on the orientation error of the end effector. The last part of this work focuses on the command of the force feedback interface. An experimental setup made out of a one degree of freedom system, was built to test different control schemes for teleoperation. Simulation trials allowed developing a comparative view of these schemes