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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.
1

Steady and pulsatile flow visualization in the human abdominal aorta

Moore, James E., Jr. 08 1900 (has links)
No description available.
2

Flow visualization of the human abdominal aorta

Eazzetta, Benedict A. 08 1900 (has links)
No description available.
3

Storosios žarnos išemijos rizika ir prevencija pilvo aortos rekonstrukcijos operacijų metu / Risk and prevention of colon ischemia during abdominal aortic reconstructive surgery

Abromaitis, Darius 11 November 2005 (has links)
1. INTRODUCTION Most complications after elective or urgent reconstructive operations on abdominal aorta are predictable and it is possible to prevent them. The development of the operating techniques, a good preoperative preparation of patients and post-operative nursing of patients enables to achieve good results of treatment when the post-operative death-rate is from 0 to 12 percent [Hallin A., 2001]. The better results depend on the prevention of especially dangerous complications, such as colon ischemia, apropos diagnostics and adequate treatment. The selection of patients of high risk becomes extra important. The proper evaluation of preoperative aortography while being aware of the fact that the reconstruction of IMA is needed, and following the specific requirements for the operating techniques strictly, enables to avoid ischemia of the gut completely or to reduce its frequency to a minimum [Belov I.V., 2002]. Post-operative GIC can be especially serious. Due to them the hospitalization period can prolong and the post-operative mortality generally increases [Chan K.H., 1989; Huddy S.P., 1991; Christenson J.T., 1994; Mercado P.D., 1994; Lubetkin E.I., 1996]. Less seldom but very difficult GIC occur to those patients for whom have been made none abdominal high coverage operations. The given frequency of the spread of GIC is about 2 percent after open heart operations [Huddy S.P., 1991; Christenson J.T., 1994; Mercado P.D., 1994], 7 percent after neurosurgical operations... [to full text]
4

Nutritional status of elderly patients undergoing abdominal aortic aneurysm resection a research report submitted in partial fulfillment ... /

Tourtellotte, Aurora. Johnson, Patricia. January 1982 (has links)
Thesis (M.S.)--University of Michigan, 1982. / eContent provider-neutral record in process. Description based on print version record.
5

Nutritional status of elderly patients undergoing abdominal aortic aneurysm resection a research report submitted in partial fulfillment ... /

Tourtellotte, Aurora. Johnson, Patricia. January 1982 (has links)
Thesis (M.S.)--University of Michigan, 1982. / eContent provider-neutral record in process. Description based on print version record.
6

Recuperação acelerada após reparo cirúrgico aberto eletivo do aneurisma da aorta abdominal: revisão sistemática da literatura

Gurgel, Sanderland José Tavares [UNESP] 18 October 2013 (has links) (PDF)
Made available in DSpace on 2014-06-11T19:35:12Z (GMT). No. of bitstreams: 0 Previous issue date: 2013-10-18Bitstream added on 2014-06-13T19:45:14Z : No. of bitstreams: 1 000740488.pdf: 1738682 bytes, checksum: 833b5e62b7c76ae97194eca5a3b73543 (MD5) / O reparo cirúrgico aberto do aneurisma da aorta abdominal (AAA) é um procedimento com alta taxa de morbimortalidade, internação hospitalar prolongada e custo elevado. Neste cenário, os programas multimodais de aceleração da recuperação pós-operatória (PMARP) podem contribuir para a otimização dos cuidados ao paciente e diminuir a utilização de recursos financeiros, mantendo-se a qualidade e a segurança. O objetivo desta revisão sistemática foi avaliar a eficácia e a segurança destes programas no reparo cirúrgico eletivo do AAA. Realizou-se revisão sistemática de estudos clínicos envolvendo os PMARP no reparo cirúrgico do AAA, avaliando a eficácia e segurança, quando comparados com os cuidados perioperatórios convencionais. Estudos clínicos foram recuperados eletronicamente das bases de dados MEDLINE, EMBASE, LILACS, Cochrane Trials Register (CENTRAL), por meio de estratégia de busca com termos apropriados. Identificaram-se os estudos aleatorizados controlados e os não aleatorizados (série de casos). Formulários padronizados foram utlizados para extração de dados. A análise estatística dos estudos aleatorizados foi executada com o programa REVMAN 5.0.2 e para os estudos não aleatórios foi utilizado o StatsDirect. Foram recuperados 13 estudos de série de casos e um ensaio clínico aleatorizado controlado unicêntrico. No ensaio clínico aleatorizado e controlado verificou-se redução significativa no tempo de hospitalização com o PMARP. A metanálise proporcional de série de casos não resultou em nenhuma diferença significativa entre pacientes tratados pelo PMARP e o tratamento convencional. O PMARP em cirurgias eletivas de AAA reduz o tempo de internação hospitalar, sem aumento de mortalidade. Devido aos níveis baixos de evidências, existe a necessidade de realização de mais ensaios aleatórios controlados para gerar grau de recomendação mais sólido / The open surgical repair of abdominal aortic aneurysm (AAA) is a procedure with high morbidity and mortality rates, prolonged hospital stay and high cost. In this scenario, the multimodal program for accelerated postoperative recovery (MPAPR) can contribute to the optimization of patient care and reduce the use of financial resources, maintaining quality and safety. The aim of this systematic review was to evaluate the efficacy and safety of these programs in elective surgical repair of AAA. We conducted a systematic review of clinical studies involving MPAPR in the surgical repair of AAA, evaluating the efficacy and safety compared with conventional perioperative care. Clinical studies were retrieved electronically from MEDLINE, EMBASE, LILACS, Cochrane Trials Register (CENTRAL), through search strategy with the appropriate terms. Identified the randomized controlled trials and non-randomized (number of cases). Standardized forms were utilized for data extraction. Statistical analysis of randomized trials were performed with the program RevMan 5.0.2 and the non-randomized studies was used StatsDirect. Retrieved 13 studies were case series and a randomized controlled single-center. In randomized controlled clinical trial found a significant reduction in hospitalization time with MPAPR. The meta-proportional number of cases resulted in no significant difference between patients treated by MPAPR and conventional treatment. The MPAPR in elective AAA reduces length of hospital stay without increasing mortality. Due to the low levels of evidence, there is a need for more randomized controlled trials to generate any degree of recommendation
7

Recuperação acelerada após reparo cirúrgico aberto eletivo do aneurisma da aorta abdominal : revisão sistemática da literatura /

Gurgel, Sanderland José Tavares. January 2013 (has links)
Orientador: Paulo do Nascimento Junior / Coorientador: Regina Paolicci El Dib / Banca: Yara Marconde Machado Castilia / Banca: Marcone Lima Sobreira / Banca: Luiz Marcelo Sá Malbouisson / Banca: Luís Vicente Garcia / Resumo: O reparo cirúrgico aberto do aneurisma da aorta abdominal (AAA) é um procedimento com alta taxa de morbimortalidade, internação hospitalar prolongada e custo elevado. Neste cenário, os programas multimodais de aceleração da recuperação pós-operatória (PMARP) podem contribuir para a otimização dos cuidados ao paciente e diminuir a utilização de recursos financeiros, mantendo-se a qualidade e a segurança. O objetivo desta revisão sistemática foi avaliar a eficácia e a segurança destes programas no reparo cirúrgico eletivo do AAA. Realizou-se revisão sistemática de estudos clínicos envolvendo os PMARP no reparo cirúrgico do AAA, avaliando a eficácia e segurança, quando comparados com os cuidados perioperatórios convencionais. Estudos clínicos foram recuperados eletronicamente das bases de dados MEDLINE, EMBASE, LILACS, Cochrane Trials Register (CENTRAL), por meio de estratégia de busca com termos apropriados. Identificaram-se os estudos aleatorizados controlados e os não aleatorizados (série de casos). Formulários padronizados foram utilizados para extração de dados. A análise estatística dos estudos aleatorizados foi executada com o programa REVMAN 5.0.2 e para os estudos não aleatórios foi utilizado o StatsDirect. Foram recuperados 13 estudos de série de casos e um ensaio clínico aleatorizado controlado unicêntrico. No ensaio clínico aleatorizado e controlado verificou-se redução significativa no tempo de hospitalização com o PMARP. A metanálise proporcional de série de casos não resultou em nenhuma diferença significativa entre pacientes tratados pelo PMARP e o tratamento convencional. O PMARP em cirurgias eletivas de AAA reduz o tempo de internação hospitalar, sem aumento de mortalidade. Devido aos níveis baixos de evidências, existe a necessidade de realização de mais ensaios aleatórios controlados para gerar grau de recomendação mais sólido / Abstract: The open surgical repair of abdominal aortic aneurysm (AAA) is a procedure with high morbidity and mortality rates, prolonged hospital stay and high cost. In this scenario, the multimodal program for accelerated postoperative recovery (MPAPR) can contribute to the optimization of patient care and reduce the use of financial resources, maintaining quality and safety. The aim of this systematic review was to evaluate the efficacy and safety of these programs in elective surgical repair of AAA. We conducted a systematic review of clinical studies involving MPAPR in the surgical repair of AAA, evaluating the efficacy and safety compared with conventional perioperative care. Clinical studies were retrieved electronically from MEDLINE, EMBASE, LILACS, Cochrane Trials Register (CENTRAL), through search strategy with the appropriate terms. Identified the randomized controlled trials and non-randomized (number of cases). Standardized forms were utilized for data extraction. Statistical analysis of randomized trials were performed with the program RevMan 5.0.2 and the non-randomized studies was used StatsDirect. Retrieved 13 studies were case series and a randomized controlled single-center. In randomized controlled clinical trial found a significant reduction in hospitalization time with MPAPR. The meta-proportional number of cases resulted in no significant difference between patients treated by MPAPR and conventional treatment. The MPAPR in elective AAA reduces length of hospital stay without increasing mortality. Due to the low levels of evidence, there is a need for more randomized controlled trials to generate any degree of recommendation / Doutor
8

Nákladová analýza léčby výdutí břišní aorty ve Fakultní nemocnici Olomouc / Cost Analysis of Treatment of Abdominal Aortic Aneurysms in the Olomouc Hospital

Radmacher, Erich January 2011 (has links)
The aneurysma of abdominal aorta is a pathological amplification of the diameter of this artery. It is a serious illness which affects 2 -- 6 % men and 1 -- 2 % women over 60. In the case of a rupture there is the mortality of 80 -- 90 %. If the aneurysma is diagnosed in time it is necessary to solve this state with an adequate treatment. The surgical treatment consists in substitution of the afflected part with a vessel replacement. Thanks to the development of medicinal technologies the aorta aneurysma is more and more often treated by the help of stentgrapth by which the afflicted part of the aorta is set aside from the circulation. The theoretical (the first) part of this work deals with the issues of the aneurysma of abdominal aorta, and it also describes the methods of its treatment. Then the work describes costs analyses used in the medical service. The practical part of the work is dedicated to the cost analysis of the treatment by means of a cost minimalization method. The work processes data of a group of patients being treated during a certain period of time in the Olomouc University Hospital in the Department of Vessel Surgery and in the Department of Interventional Radiology. The aim of this work is to evaluate and compare objectively the costs of abdominal aorta aneurysma treatment by individual methods, and to compare the results with foreign studies.
9

Anestesia para aneurismectomia de aorta abdominal infra-renal: experiência com 104 casos consecutivos no HCFMRP-USP / Anesthesia for aneurysmectomy of the infrarenal abdominal aorta: experience with 104 consecutive cases at HCFMRP-USP.

Lima, Breno José Santiago Bezerra de 07 February 2006 (has links)
Introdução. A morbi-mortalidade durante e após anestesia para aneurismectomia de aorta abdominal é alta, pois esta doença acomete pacientes após a sétima década de vida e que possuem várias doenças concomitantes. Objetivos. Analisar e discutir as condutas anestésicas utilizadas nos períodos pré e intra-operatório no Serviço de Anestesiologia do HCFMRP-USP. Casuística e Método. Foram analisados os prontuários de 104 pacientes submetidos à aneurismectomia de aorta no tocante às condutas utilizadas pelos anestesiologistas para a condução destes casos. Resultados. Apenas um paciente possuía menos de 40 anos de idade, 76,80% estavam na sétima ou oitava década de vida e 88,46% eram do sexo masculino. A hipertensão arterial acometeu 70,19% dos pacientes e 26,92% possuíam coronariopatia. Pacientes com obesidade foram a minoria (26,92%). O ecocardiograma pré-operatório demonstrou que a grande maioria dos pacientes apresentava função ventricular normal. A cirurgia foi realizada em regime de urgência em 7,69% dos casos. A anestesia geral exclusiva foi realizada em 17 pacientes e associada com a peridural em 57 pacientes, com a raquianestesia em 11 e com a raqui-peri combinadas em 19. O tempo cirúrgico variou de 120 a 510 minutos enquanto que o tempo de clampeamento aórtico variou de 30 a 165 minutos. Houve um óbito no período intra-operatório e a causa foi choque hipovolêmico e 10 óbitos até o vigésimo dia pós-operatório. Sessenta e seis pacientes receberam concentrado de papa de hemácias durante o período intra-operatório, mas só em 43,27% desses casos a indicação esteve suportada por exame laboratorial. Oitenta pacientes foram extubados ainda na sala de cirurgia, enquanto que os demais (23) permaneceram intubados no período pós-operatório e 19 necessitaram de suporte ventilatório que teve tempo que variou de 3 a 96 horas com média de 42,31 horas. Apenas quatro pacientes fizeram pós-operatório imediato no Centro de Terapia Intensiva enquanto que os demais permaneceram na Sala de Recuperação Pós-Anestésica. Conclusão. Não existe um protocolo único para a realização de anestesia para aneurismectomia de aorta no HCFMRP-USP e a técnica anestésica utilizada não influenciou o morbi-mortalidade. / Introduction. The morbidity and mortality during and after anesthesia for aneurysmectomy of the abdominal aorta are high since this disease affects patients after the seventh decade of life who have several concomitant diseases. Objectives. To analyze and discuss the anesthetic conducts used during the preoperative and intra-operative periods at the Service of Anesthesiology of HCFMRP-USP. Cases and Method. The medical records of 104 patients submitted to aneurysmectomy of the aorta were analyzed regarding the conducts used by the anesthesiologists for the management of these cases. Results. Only one patient was less than 40 years old, 76.80% were in he seventh or eighth decade of life, and 88.46% were male. Arterial hypertension was present in 70.19% of the patients and 26.92% had coronary artery disease. Obese patients were a minority (26.92%). The preoperative echocardiogram demonstrated that most patients had normal ventricular function. Surgery was performed on an emergency basis in 7.69% of cases. Seventeen patients received exclusive general anesthesia, while general anesthesia was associated with peridural anesthesia in 57, with rachi-anesthesia in 11 and with combined rachi-peridural anesthesia in 19. Surgical time ranged from 120 to 510 minutes and time of aortic clamping ranged from 30 to 165 minutes. One death occurred intra-operatively due to hypovolemic shock and 10 patients died up to the 20th postoperative day. Sixty-six patients received a red blood cell concentrate intra-operatively, but this indication was supported by a laboratory exam in only 43.27% of these cases. Eighty patients were extubated while still in the operating room while the remaining 23 continued to be intubated during the postoperative period and 19 required ventilatory support lasting 3 to 96 hours (mean duration: 42.31 hours). Only four patients spent the immediate postoperative period in the Intensive Care Unit, while the remaining ones stayed in the Post-Anesthesia Recovery Room. Conclusion. There is no single protocol for the application of anesthesia for aneurysmectomy of the aorta at HCFMRP-USP and the anesthetic technique used did not influence morbidity-mortality.
10

Implante experimental de substituto arterial de polidimetilsiloxano com reforço de tecido de poliéster em coelhos / Experimental implant of arterial substitute of polydimethylsiloxane reinforced with polyester fabric in rabbits

Ribas, Laila Massad 21 August 2013 (has links)
O presente estudo avaliou próteses vasculares de pequeno calibre feitas de polidimetilsiloxano (PDMS) com reforço de poliéster implantadas em aorta de coelhos através de fluoroscopia. Os objetivos do estudo foram: (1) analisar tubo de PDMS com reforço de poliéster implantado em aorta de coelhos como possível material para prótese vascular, (2) avaliar a patência das próteses através de fluoroscopia, (3) avaliar a condição de implante cirúrgico; (4) avaliar o comportamento macroscópico biológico do implante e (5) analisar o modelo experimental proposto. Próteses vasculares de PDMS foram implantadas na aorta infrarrenal de 64 coelhos cedidos pelo biotério da Faculdade de Medicina da Univesidade de São Paulo. Os exames de fluoroscopia foram realizados em até 150 dias após implantação cirúrgica. As próteses de PDMS foram classificadas em ocluídas e patentes, sendo essas sub-classificadas em diferentes graus de estenose. O tempo de clampeamento da aorta foi aferido durante os procedimentos cirúrgicos. De maneira amostral peças foram encaminhadas para microscopia eletrônica para verificação de endotelização das próteses. As análises estatísticas foram feitas através de teste t-Studant, teste ANOVA e Kaplan-Meier. Dos 64 animais que receberam a prótese, trinta (46,88%) apresentaram boa evolução clínica, vinte e três (35,94%) morreram e onze (17,18%) apresentaram paraplegia de membros posteriores. A patência das próteses em 30 dias foi de 87% (±6,7), em 60 dias foi de 73% (±9,3), em 90 dias foi de 57% (±11) e em 120 dias foi de 48% (±12). Cinquenta por cento (oito) das próteses patente não apresentaram nenhum grau de estenose, 35,5% (seis) apresentaram cinquenta por cento ou menos de estenose e 12,5% (dois) apresentaram estenose entre cinquenta e setenta por cento. Nenhum animal apresentou estenose maior que 70%. O tempo médio de clampeamento da aorta foi de 52 minutos. Não houve diferença significante nem na associação entre tempo de clampeamento da aorta e a evolução clínica dos animais (p=0,67) nem na associação entre o tempo de clampeamento e a patência das próteses (t=1,35; p=0,18). As peças encaminhadas para microscopia apresentaram crescimento endotelial a partir do vaso nativo em direção à prótese de PDMS. Foi possível concluir com este estudo que o PDMS demonstrou-se um material adequado para futuras pesquisas no ramo de próteses vasculares e que o uso da fluoroscopia na avaliação dessas próteses foi de fundamental importância na determinação da patência dos implantes / The present study evaluated small caliber vascular prostheses made of polydimethylsiloxane (PDMS) with polyester reinforcement implanted in the aorta of rabbits by fluoroscopy. The study objectives were: (1) analyze PDMS tube with polyester reinforcement implanted in the aorta of rabbits as possible material for vascular prosthesis, (2) assess the patency of the prosthesis through fluoroscopy, (3) assess the condition of surgical implant (4) evaluate the macroscopic behavior of biological implant and (5) analyze the proposed experimental model. Vascular prostheses were implanted in PDMS infrarenal aorta of 64 rabbits assigned by the animal house of the Faculty of Medicine of the University of São Paulo. Fluoroscopic examinations were performed within 150 days after surgical implantation. The prosthesis of PDMS were classified into occluded and patents, these being sub-classified into different degrees of stenosis. The time of aortic clamping was measured during surgical procedures. Sample pieces were sent for electron microscopy to check endothelialization of prostheses. Statistical analyzes were performed using t-test Studant, ANOVA and Kaplan-Meier. Of the 64 animals that received the prosthesis, thirty (46.88%) showed clinical improvement, twenty-three (35.94%) died and eleven (17.18%) had paraplegia of hind limbs. The patency of the prosthesis in 30 days was 87% (± 6.7), at 60 days was 73% (± 9.3), at 90 days was 57% (± 11) and at 120 days was 48 % (± 12). Fifty percent (eight) of the prosthesis patent did not present any degree of stenosis, 35.5% (six) had fifty percent or less of stenosis and 12.5% (two) had stenosis between fifty and seventy percent. No animal showed stenosis greater than 70%. The mean aortic clamping was 52 minutes. There was no significant difference in the association between duration of aortic clamping and clinical evolution of animals (p = 0.67) nor the association between clamping time and patency of the prosthesis (t = 1.35, p = 0.18). The parts sent for microscopy showed endothelial growth from the native vessel toward the prosthesis PDMS. It can be concluded from this study that the PDMS proved to be a suitable material for future research in the field of vascular prostheses and the use of fluoroscopy in the evaluation of these prostheses was of fundamental importance in determining the patency of the implants

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