Relevant bibliographies by topics / Femoral artery bypass grafts

Academic literature on the topic 'Femoral artery bypass grafts'

Author: Grafiati
Published: 10 December 2022
Last updated: 28 January 2023

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Journal articles on the topic "Femoral artery bypass grafts"

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Davidovic, Lazar, Ilija Kuzmanovic, Dusan Kostic, Ilijas Cinara, Slobodan Cvetkovic, Miljko Ristic, Dusan Velimirovic, and Dragica Jadranin. "Obturator or "lateral" bypass in the management of infected vascular prostheses at the groin." Srpski arhiv za celokupno lekarstvo 130, no. 1-2 (2002): 27–32. http://dx.doi.org/10.2298/sarh0202027d.

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The infection of the previously implanted vascular graft at the groin, is associated with great mortality and morbidity rate [1]. The authors present a retrospective study in which they analyzed management of infected vascular prostheses at the groin, using obturator bypass in 26 cases, and "lateral" bypass in 15 cases. The indications for obturator bypass reconstructions included: 20 infections of aorto-femoral grafts, two infected pse udoaneurysms in the groin after RTA of the superficial femoral artery, and 4 infections of iliac-femoral grafts. The indications for lateral bypass reconstructions were: infections after aorto-femoral reconstructions - 8 cases; infection after femora-popliteal reconstructions - 4 cases; infection after iliac-femoral reconstruction - 2 patients, and one infected pseudoaneurysm in the groin after RTA of the superficial femoral artery. In 3 subjects obturator bypass was performed using extraperitoneal approach while in other 23 patients transperitoneal approach was done by donor's artery. The obturator bypass was performed using a PTFE graft in 3 cases and Dacron graft in 23. The donor's artery used for obturator bypass was a noninfected proximal part of aortofemoral graft in 20 cases, and iliac artery in 6 patients. The superfical femoral artery was recipient artery for obturator bypass in 3 cases, deep femoral artery in one case, and above the knee popliteal artery in 22 cases (Figure 1). In two patients transperitoenal approach to donors artery for "lateral" bypass has been used, and in 13 cases extraperitoneal. The proximal noninfected part of aorto femoral graft was used as a donor's artery for lateral bypass in 8 patients, while common iliac artery in 7 subjects. In 5 cases recon structions were performed using PTFE grafts, in 3 using autologous saphenous vein grafts, and in 7 using Dacron grafts. The recipient artery for "lateral" bypass was deep femoral in 8 cases, superficial femoral in three patients and above the knee popliteal artery in 4 subjects. After both types of reconstruction, extirpation of infected grafts from the groin was performed (Figure 2). The control examination was performed using physical and Doppler ultrasonographic examinations, one, 3, 6, 12 months, and then every year after the operation. In cases with suspected graft infection or thrombosis, control angography was also performed. One intraoperative perforation of the urinary bladder has been done accidentally during obturator bypass reconstruction. The mean follow-up period for patients with obturator bypasses was 2.3 years, while 2.1 years for patients with "lateral" bypasses. Comparing with "lateral" bypass, obturator bypass showed statistically significant lower (p < 0.05) 30- day mortality and early graft infection rate, as well as statistically significant better early and total limb salvage rate. There were no statistically significant differences (p > 0.05) between obturator and "lateral" bypass procedures having in mind, late graft infection rate, as well as early and late graft patency (Figures 3 and 4). In cases with infected vascular prostheses in the groin, the authors recommend obturator bypass comparing with "lateral" bypass.
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Snegirev, M. A., A. A. Paivin, and D. O. Denisyuk. "AORTIC VALVE REPLACEMENT IN PATIENT WITH FUNCTIONING CORONARY ARTERY BYPASS GRAFTS." Grekov's Bulletin of Surgery 178, no. 6 (March 18, 2020): 53–55. http://dx.doi.org/10.24884/0042-4625-2019-178-6-53-55.

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We report the clinical case of aortic valve replacement for severe aortic insufficiency in patient who previously was subjected to coronary bypass grafting, with functioning grafts, including internal thoracic artery graft. The procedure was performed from the upper ministernotomy with peripheral (femoral) cardiopulmonary bypass.
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Zahangir, NM, Md Nazmul, TMNS Khan, RA Chowdury, and Z. Haider. "Rare Vascular Surgery in Apollo Hospitals, Dhaka - Right Popletial to Dorsalis pedis Artery Anastomosis and Axillary Bi Femoral Bi Poplileal Bypass Grafting - limb salvage procedure." Pulse 5, no. 2 (August 31, 2014): 65–71. http://dx.doi.org/10.3329/pulse.v5i2.20270.

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Bypass grafts to the dorsalis pedis artery provide excellent revascularization to ischemic foot. It is a durable and effective procedure for limb salvage. Axillo femoral-popliteal procedure offers a reasonable alternative in high-risk patients. We are reporting 2 cases of such procedures from Apollo hospitals, Dhaka. Right Popletial to Dorsalis pedis artery anastomosis was done in a 32 years old man. Interposition venous graft was done from the right popliteal artery to dorsalis pedis artery. Axillo-Bi Femoral-Bi Poplileal Bypass Grafting: was done in a 59 years old man. Knitted fabric strength graft was used. Both the patients were doing well in postoperative period. DOI: http://dx.doi.org/10.3329/pulse.v5i2.20270 Pulse Vol.5 July 2011 p.65-71
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Diaz-Abele, Julian, Emily Saganski, and Avinash Islur. "Use of Arterial Grafts in Hypothenar Hammer Syndrome: Application of Perforator Flap Anatomy." Plastic Surgery 28, no. 4 (June 17, 2020): 204–9. http://dx.doi.org/10.1177/2292550320933684.

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Background: Hypothenar hammer syndrome (HHS) is traditionally treated with venous bypass grafting, but controversy has arisen as arterial grafts have become more available. Methods: A retrospective review of all patients undergoing ulnar artery bypass grafting for HHS with an arterial graft from 2008 to 2017 was performed. We also review the literature for patency rates and discuss the scenarios that favor different graft choices. Results: Six patients were included in our series. Five had primary surgery and 1 had revision surgery for HHS. Five arterial grafts were from the deep inferior epigastric artery and 1 was from the lateral circumflex femoral artery. The proximal anastomotic site was the ulnar artery for all: n = 6. The distal anastomosis site was the palmar arch and common digital artery (CDA) of the ring/small finger and CDA of the middle/ring finger: n = 3; the palmar arch and the CDA of the ring/small finger: n = 3. All patients were symptom-free at follow-up and had a patent ulnar artery on Allen’s testing or angiogram. Conclusion: Patency rates of arterial grafts for HHS appear to be excellent and this small series and may offer an alternative to traditional venous grafts and end-to-end arterial anastomoses. We suggest using arterial perforator grafts from free flap donor sites. These have well-described anatomy, are easily harvested, and carry minimal donor site morbidity. Lateral circumflex femoral artery graft is favored in patients requiring a single distal anastomosis, who have a ventral hernia, or who are obese. Deep inferior epigastric artery graft is preferred when multiple distal targets or versatile configurations are needed, in thin patients, or in female patients.
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Campbell, T., R. Cole, and M. Davies. "Pressure induced restenosis of femoral artery bypass grafts." Journal of Biomechanics 39 (January 2006): S328. http://dx.doi.org/10.1016/s0021-9290(06)84292-2.

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Sapienza, Paolo, Andrea Mingoli, Richard J. Feldhaus, Filippo Napoli, André Marsan, Marco Franceschini, Luca di Marzo, and Antonino Cavallaro. "Descending thoracic aorta-to-femoral artery bypass grafts." American Journal of Surgery 174, no. 6 (December 1997): 662–66. http://dx.doi.org/10.1016/s0002-9610(97)00184-0.

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Lazarides, Tzilalis, Georgiadis, Georgopoulos, and Arvanitis. "Femorodistale Rekonstruktionen auf die A. tibialis anterior mit PTFE-Prothesen und Venencuff: Alternativen der Bypassführung." Vasa 32, no. 1 (February 1, 2003): 22–25. http://dx.doi.org/10.1024/0301-1526.32.1.22.

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Background: The anterior tibial is the less often used artery for distal anastomosis in infrapopliteal bypass with synthetic grafts; however, several investigators argue against even an attempt to use non-autologous material for such distal reconstructions. Only few studies report patency rates mixing-up popliteal below-knee and various crural bypasses. Patients and methods: Nineteen consecutive femoral-anterior tibial cuffed PTFE bypass grafts, either via the lateral (n = 15) or interosseous (n = 4) route, were inserted in a 10-years period. Results: The 1-year and 2-year primary patency rate was 71% and 53%, respectively. It is noteworthy that in one patient a graft positioned via the lateral route remained patent for ten years. No complications were observed regarding the routing methods, whatever increased operating time was required in the interosseous route cases. The 3-year cumulative survival rate for this particular group of patients was 32%. Conclusions: Our data indicate that femoral-anterior tibial bypasses using cuffed PTFE grafts via the lateral route result in an acceptable medium-term patency. As such patients have a limited life expectancy, these procedures should be performed when an autologous vein is not available, as opposed to primary amputation.
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de Niet, A., and J. H. Van Uchelen. "Hypothenar hammer syndrome: long-term follow-up after ulnar artery reconstruction with the lateral circumflex femoral artery." Journal of Hand Surgery (European Volume) 42, no. 5 (December 19, 2015): 507–10. http://dx.doi.org/10.1177/1753193415622592.

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In symptomatic patients with hypothenar hammer syndrome, the occluded part of the ulnar artery can be reconstructed with an autologous graft. Venous grafts are used frequently, but they are known for their low patency rate. Arterial grafts show better patency rates than venous grafts in coronary bypass surgery. We performed 11 ulnar artery reconstructions with the descending branch of the lateral circumflex femoral artery and compared these with previously performed venous reconstructions. All patients with an arterial graft reconstruction had a patent graft at a mean follow-up of 63 months. In addition, nine out of 11 patients reported improvement in their symptoms. The patency rate of venous reconstructions in hypothenar hammer syndrome is significantly lower. Arterial grafting for hypothenar hammer syndrome has superior patency compared with venous grafting; we recommend it as the surgical treatment of choice for symptomatic hypothenar hammer syndrome. Level of evidence: 4.
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Ghobrial, Mina S. A., Kamal Khan, Mohamed Baguneid, and Richard D. Levy. "Transcatheter aortic valve implantation facilitated by right common carotid cut-down and innominate artery angioplasty with simultaneous right coronary artery vein graft percutaneous coronary intervention in a patient with mid aortic syndrome: a case report." European Heart Journal - Case Reports 4, no. 4 (May 26, 2020): 1–5. http://dx.doi.org/10.1093/ehjcr/ytaa134.

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Abstract Background Transcatheter aortic valve implantation (TAVI) is most commonly performed via the femoral approach. Small caliber ilio-femoral arteries, severe calcification and tortuosity are often prohibitive reasons for TAVI via the femoral approach. Mid-aortic syndrome is a rare condition describing congenital or acquired coarctation of the abdominal aorta. Case summary To the best of our knowledge, this case report describes the world’s first TAVI in a patient with mid-aortic syndrome with challenging vascular access that would preclude conventional TAVI access routes. A 76-year-old woman with intermittent claudication, underwent work-up for axillo-bifemoral bypass, underwent a TAVI for incidental severe asymptomatic severe aortic stenosis via right common carotid TAVI facilitated by innominate artery angioplasty achieved vascular access for TAVI. Percutaneous coronary intervention to a right coronary artery vein graft was simultaneously performed via a left brachial artery cut down. Discussion We demonstrate that complex angioplasty to coronary artery bypass grafts and the innominate artery alongside TAVI via a variety of arterial access sites is both safe and feasible.
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Conte, Michael S. "Challenges of Distal Bypass Surgery in Patients with Diabetes." Journal of the American Podiatric Medical Association 100, no. 5 (September 1, 2010): 429–38. http://dx.doi.org/10.7547/1000429.

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Surgical revascularization of the lower extremity using bypass grafts to distal target arteries is an established, effective therapy for advanced ischemia. Recent multicenter data confirm the primacy of autogenous vein bypass grafting, yet there remains significant heterogeneity in the utilization, techniques, and outcomes associated with these procedures in current practice. Experienced clinical judgment, creativity, technical precision, and fastidious postoperative care are required to optimize long-term results. The diabetic patient with a critically ischemic limb offers some specific challenges; however, numerous studies demonstrate that the outcomes of vein bypass surgery in this population are excellent and define the standard of care. Technical factors, such as conduit and inflow/outflow artery selection, play a dominant role in determining clinical success. An adequate-caliber, good-quality great saphenous vein is the optimal graft for distal bypass in the leg. Alternative veins perform acceptably in the absence of the great saphenous vein, whereas prosthetic and other nonautogenous conduits have markedly inferior outcomes. Graft configuration (reversed, nonreversed, or in situ) seems to have little effect on outcome. Shorter grafts have improved patency. Inflow can be improved by surgical or endovascular means if necessary, and distal-origin grafts (eg, those arising from the superficial femoral or popliteal arteries) can perform as well as those originating from the common femoral artery. The selected outflow vessel should supply unimpeded runoff to the foot, conserve conduit length, and allow for adequate soft-tissue coverage of the graft and simplified surgical exposure. This review summarizes the available data linking patient selection and technical factors to outcomes and highlights the importance of surgical judgment and operative planning in the current practice of infrainguinal bypass surgery. (J Am Podiatr Med Assoc 100(5): 429–438, 2010)
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Dissertations / Theses on the topic "Femoral artery bypass grafts"

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Borland, Julie Anne Agnew. "The renin angiotensin system in human coronary artery bypass grafts." Thesis, Imperial College London, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.248196.

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Griffis, Jack C. III. "Design of a mechanism for generating axial arterial distraction in-vivo." Thesis, Georgia Institute of Technology, 2002. http://hdl.handle.net/1853/16795.

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Sölvenäs, Rebecka. "Patency of no-touch saphenous vein grafts incoronary artery bypass grafting. An angiographicfollow up." Thesis, Örebro universitet, Institutionen för medicinska vetenskaper, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:oru:diva-82625.

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Yui, Patrick. "Nitric oxide in vascular injury : a study using nitric oxide synthase knockout mice and adenoviral gene transfer in rabbit carotid vein grafts." Thesis, University College London (University of London), 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.396248.

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Guerra, Patricia Chung. "Effect of the cell and collagen source on tissue engineered vascular grafts." Thesis, Georgia Institute of Technology, 2001. http://hdl.handle.net/1853/11208.

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Nordgaard, Håvard Bersås. "TRANSIT-TIME FLOWMETRY AND WALL SHEAR STRESSANALYSIS OF CORONARY ARTERY BYPASS GRAFTS : – A clinical and experimental study." Doctoral thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for sirkulasjon og bildediagnostikk, 2010. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-11828.

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Al-Benna, Sammy. "The effect of harvesting techniques and cardiovascular risk factors on endothelial function of human coronary artery bypass grafts." Thesis, University of Glasgow, 2007. http://theses.gla.ac.uk/38956/.

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Endothelial dysfunction is a common pathophysiological feature which develops in the evolution of cardiovascular diseases. Strategies to maintain a healthy endothelium or to reverse endothelial dysfunction are crucial for the normal function of the cardiovascular system and the maintenance of cardiovascular health. Endothelial dysfunction is observed both in the coronary and peripheral vasculature. Studies have demonstrated that surgical preparation of coronary artery bypass grafts can cause endothelial dysfunction and influence the viability and patency of these grafts. An important consideration in the improvement of surgical techniques is to prevent damage to the endothelium during harvesting and implantation. The relative influence of the Mayo stripper minimally invasive long saphenous vein (LSV) harvesting technique and the influence of internal mammary artery (IMA) pedicle width in preserving the integrity of endothelial function are uncertain. Increased production of reactive oxygen species, in particular, superoxide and radicals derived from superoxide, has been associated with endothelial dysfunction in animal models of disease, and there is increasing evidence of a link between oxidative stress and endothelial dysfunction in humans. It has been reported that endothelial dysfunction and increased oxidative stress may predict future events in patients with coronary artery disease. However, concurrent and comparative data on endothelial function, direct measures of superoxide in human vessels, and biomarkers of oxidative stress are not available simultaneously in patients with coronary artery disease nor in control subjects with no documented cardiovascular disease. Circulating biomarkers of oxidative stress have been investigated in patients with essential hypertension and in control subjects, but the relationship between these markers and endothelial function has not been examined. In addition, although the degree of endothelial function has been consistently linked to the number of risk factors present in patients with coronary artery disease, the relative importance of individual risk factors in determining levels of oxidative stress and endothelial function remains uncertain. To address these questions, this thesis studied the influence of harvesting techniques and cardiovascular risk factors on endothelial function of human blood vessels commonly used in coronary artery bypass grafting.
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LeitÃo, Maria ClÃudia de Azevedo. "Estudo de parÃmetros ecodopplercardiogrÃficos de patÃncia do enxerto composto de artÃria torÃcica interna esquerda." Universidade Federal do CearÃ, 2011. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=5977.

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nÃo hÃ
Enxertos compostos com artÃria torÃcica interna esquerda (ATIE) tem aumentado sua aplicabilidade na cirurgia de RevascularizaÃÃo MiocÃrdica (RM). A confirmaÃÃo de patÃncia do enxerto de ATIE à pedra fundamental na RM. O melhor parÃmetro de patÃncia calculado pelo ecoDopplercardiograma à a fraÃÃo diastÃlica (FD) ≥ 0,5. O objetivo geral deste estudo foi estabelecer parÃmetros ecoDopplercardiogrÃficos de patÃncia do enxerto composto de ATIE, quando revasculariza a artÃria interventricular anterior (AIA) e outro ramo do sistema coronariano esquerdo. O especÃfico foi definir a sensibilidade e a especificidade de trÃs variÃveis: RelaÃÃo da velocidade-pico na diÃstole sobre a velocidade-pico na sÃstole (VPD/VPS), integral da velocidade-tempo na diÃstole (VTID) e FD quanto à patÃncia do enxerto composto utilizando FD ≥ 0,5 como padrÃo de referÃncia. O estudo foi realizado segundo um desenho em duas fases, fase controle e fase estudo. Na fase controle, todos os pacientes tinham a patÃncia dos enxertos confirmadas por cineangiocoronariografia (CINE). Estes pacientes tinham registro das variÃveis VPD/VPS, VTID e FD. Foram entÃo estabelecidos pontos de cortes para essas variÃveis baseando-se nos cÃlculos de sensibilidade e especificidade atravÃs da curva ROC (ReceiverOperationCharacteristic) com o objetivo de diferenciar enxertos compostos de enxertos simples quando a ATIE somente revasculariza a AIA. Esses pontos de corte foram aplicados nos pacientes com enxerto composto da fase estudo. Foi construÃda uma tabela de contingÃncia 2x2 para o cÃlculo de sensibilidade e especificidade, tendo como indicador de patÃncia uma FD≥0,5. Na fase controle, observou-se diferenÃas estatisticamente significativas na anÃlise das trÃs variÃveis em diferenciar o enxerto simples do composto. Os parÃmetros de patÃncia do enxerto composto estabelecidos pela fase estudo foram VPD/VPS ≥ 0,71, VTId ≥ 0,09 e FD ≥ 0,58. A especificidade para todas essas variÃveis foi de 100%. A sensibilidade foi de 40% para VPD/VPS ≥ 0,71, 36,4% para VTId ≥ 0,09 e 68% para FD ≥ 0,58. Conclui-se que valores maiores ou iguais aos estabelecidos para cada variÃvel representam um provÃvel indicador de patÃncia do enxerto composto. Valores abaixo do estabelecido apresentam grande proporÃÃo de falsos negativos, nÃo sendo conclusivo quanto à patÃncia.
Composite grafts with left internal thoraic artery (LITA) has incresed its applicability in Coronary Artery Bypass Surgery (CAGB). Confirmation of patency of the LITA graft is the cornerstone of Miocardial Revascularization. The best measure of patency calculated by Doppler echocardiogram (Doppler) is the diastolic fraction (DF) ≥ 0.5. The aim of this study was to establish Doppler echocardiographic parameters which could suggest the presence of a composite graft of LITA, when it revascularizes the anterior interventricular artery (AIA) and another branch of the left coronary artery system. The endpoint of this study was to define sensitivity and specificity considering three variables: ratio of peak velocity in diastole over the systolic peak velocity (DPV / SPV), the mean velocity-time integral in diastole (VTID) and FD of the composite graft patency using FD ≥ 0.5 as the reference standard. The study was conducted according to a design in two stages. It was defined a control group and study group. In the control group, all patients had graft patencies confirmed by coronary angiography (CINE) and the variables DPV / SPV,VTID and DF measured. So, we use this data to establish cutoff points for these variables , based on the calculation of sensitivity and specificity using the ROC curve (Receiverv Operation Characteristic) in order to differentiate composite from simple graft when ATIE only revascularizes the AIA. These cutoff points were applied in patients with composite graft group study. We built a 2x2 contingency table to calculate sensitivity and specificity, considering the indicator of patency a DF ≥ 0.5. In the control group, we observed statistically significant differences in the analysis of the three variables in differentiating simple from composite grafts. The parameters of composite graft patency established by the study group were DPV / SPV ≥ 0.71,VTID ≥ 0.09 and FD ≥ 0.58. The specificity for all these variables was 100%. The sensitivity was 40% for DPV / SPV ≥ 0.71, ≥ 36.4% for VTId≥ 0.09 and 68% for FD ≥ 0.58. We conclude that values greater than or equal to those established for each variable represents a likely indicator of graft patency compound. Values below the established are not conclusive to exclude composite grafts due to a large proportion off alse negatives.
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Deininger, Maurilio Onofre. "Análise comparativa da perviedade das artérias torácicas internas direita e esquerda na revascularização da região anterior do coração. Avaliação por angiotomografia no 6º mês de pós-operatório." Universidade de São Paulo, 2012. http://www.teses.usp.br/teses/disponiveis/5/5156/tde-20122012-120212/.

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Objetivos: O objetivo deste estudo é analisar a perviedade da artéria torácica interna direita (ATID) pediculada, anteroaórtica em anastomose para a região anterior do coração na cirurgia de revascularização do miocárdio (RM), em relação à artéria torácica interna esquerda (ATIE). Métodos: No período de dezembro de 2008 a dezembro de 2011, 100 pacientes foram selecionados para serem submetidos a cirurgia de RM sem circulação extracorpórea (CEC), de forma prospectiva. Eles foram agrupados em Grupo 1 (G-1) e Grupo 2 (G-2), cada um com 50 pacientes, com randomização por computador e conhecimento da técnica no início da cirurgia. No G-1, os pacientes receberam ATIE para a região anterior do coração e complementação da RM com a ATID livre para ramos da circunflexa (CX) e outros enxertos arteriais ou venosos para a coronária direita (CD) e/ou ramos. Os pacientes do G-2 receberam ATID pediculada para a região anterior do coração e complementação da RM com ATIE, pediculada, para ramos da CX e outros enxertos arteriais ou venosos para a CD e/ou ramos. A perviedade das artérias torácicas internas direita e esquerda foi avaliada através de angiotomografia coronária multislice, 64 canais, no 6º mês de pós-operatório. Resultados: Os dois grupos eram semelhantes quanto aos dados clínicos de pré-operatório, como exemplo: diabetes mellitus, hipertensão arterial sistêmica, obesidade. Os dois grupos apresentaram predominância do sexo masculino com 75,6% e 88% nos grupos 1 e 2, respectivamente. Cinco pacientes migraram do G-1 para o G-2 em virtude de doença ateromatosa na aorta ascendente e um deles foi excluído por ter que utilizar enxerto composto. A média de anastomoses distais no G-1 foi de 3,48 (DP=0,72), e no G-2 foi de 3,20 (DP=0,76). Não ocorreu mediastinite em nenhum paciente. Uma paciente do G-1 apresentou osteomielite, e necessitou de intervenção cirúrgica. Dois pacientes do G-1 foram submetidos a reoperação por sangramento. Os resultados das angiotomografias coronarianas com 96 pacientes re-estudados mostram que todas as ATIs, fosse a direita ou a esquerda, utilizadas pediculadas para a região anterior do coração encontravam-se sem oclusões ou estenoses, configurando 100% de perviedade. No G-1, um enxerto livre da ATID para ramos da CX apresentava oclusão total, em dois pacientes havia estenose leve, em um deles havia estenose moderada na anastomose proximal na aorta ascendente e outro apresentava diminuição de calibre na sua porção distal. Em três pacientes o enxerto de segmento de veia safena para ramos da CD se encontravam ocluídos. No G-2, dois pacientes apresentavam oclusão total na ATIE pediculada para ramos da CX, e outro apresentava estenose moderada na porção distal da ATIE utilizada sequencial para dois ramos marginais. Em dois pacientes o enxerto de segmento de veia safena para ramos da CD se encontravam ocluídos. Não houve óbitos em nenhum dos grupos. Conclusão: A cirurgia de RM com utilização da ATID pediculada, anterógrada para o RIA, apresenta resultado semelhante ao da ATIE utilizada para essa mesma coronária.
Objective: To analyze the patency of the pedicled, anteroaortic, right internal mammary artery (RIMA) anastomosed to the left anterior descending (LAD) and branches in coronary artery bypass graft surgery (CABG), in comparison with the left internal mammary artery (LIMA). Methods: From December 2008 to December 2011, 100 patients were selected to undergo a prospective off-pump coronary artery bypass graft surgery and were randomly divided by computer into Group 1 (G-1) and Group 2 (G-2), so that the technique was known at the beginning of the surgery. In each group, with 50 patients, the patency of both right and left internal mammary arteries, which were used pedicled to the LAD, was comparatively studied through coronary computed tomography angiography. G-1 had 50 patients who received the LIMA to the LAD or LAD/diagonal (sequential) and had the CABG complemented with the free RIMA to circumflex branches and other arterial or venous grafts to the right coronary artery (RCA) and/or branches. G-2 had 50 patients who received the pedicled RIMA to the LAD or LAD/diagonal (sequential) and had the CABG complemented with the pedicled LIMA to circumflex branches and other arterial or venous grafts to the RCA and/or branches. Results: Both groups were similar in pre-operative clinical data, such as: diabetes mellitus, systemic arterial hypertension, obesity. Also, there was predominance of males in both groups, with 75,6% and 88% in Groups 1 and 2 respectively. Five patients were switched from G-1 to G-2 owing to atheromatous disease in the ascending aorta, and one of them was dropped for having to use composite graft. The average of distal anastomosis in G-1 was 3,48 (standard deviation (SD=0,72) and in G-2 was 3,20 (SD=0,76). Mediastinitis didn\'t occur in any patient. A patient from G-1 had osteomyelitis that required surgical intervention. Two patients from G-1 underwent reoperation because of bleeding. The 64-slice coronary computed tomography angiography was performed in the 6th postoperative month; 96 patients have been re-studied so far and all pedicled IMAs to the LAD were patent. In G-1 a free RIMA graft to the circumflex branches presented total occlusion, another two had a discreet stenosis and in one moderate at the proximal anastomosis and one more had a string signal at the distal portion. In G-2 two patients had total occlusion of the pedicled LIMA to circumflex artery branches, and another one presented moderate stenosis at its distal portion. In two patients the saphenous vein graft to the RCA branches were occluded. There were no deaths in any of the groups. Conclusion: The CABG surgery using the pedicled, anteroaortic RIMA to the LAD has a similar outcome to that of the LIMA used for this same coronary.
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Hales, Majella. "Postoperative antifibrinolytic drugs to control haemorrhage." Thesis, Queensland University of Technology, 2002.

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Books on the topic "Femoral artery bypass grafts"

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Arterial grafting for myocardial revascularization: Indications, surgical techniques, and results. Berlin: Springer-Verlag, 1990.

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Cooley, D. A., and Guo-Wei He. Arterial Grafting for Coronary Artery Bypass Surgery. Springer London, Limited, 2006.

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He, Guo-Wei, and D. A. Cooley. Arterial Grafting for Coronary Artery Bypass Surgery. Springer, 2010.

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Leask, Richard L. Intimal thickening and hemodynamics of human coronary artery bypass grafts. 2002.

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Arterial Grafts for Coronary Bypass Surgery: A Textbook for Cardiovascular Clinicians and Researchers. Springer, 1999.

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Mcfetridge, Judith Ann. LEFT VENTRICULAR FUNCTION IN MEN DURING COGNITIVE STRESS BEFORE AND AFTER CORONARY ARTERY BYPASS GRAFTS. 1991.

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Conduits for myocardial revascularization. Austin: R.G. Landes, 1993.

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Mathe, G., S. E. Salmon, and Ludwig K. von Segesser. Arterial Grafting for Myocardial Revascularization: Indications, Surgical Techniques and Results. Springer, 2011.

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Arterial Grafting for Myocardial Revascularization: Indications, Surgical Techniques and Results. Springer, 2011.

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Segesser, Ludwig K. von. Arterial Grafting for Myocardial Revascularization: Indications, Surgical Techniques and Results. Springer London, Limited, 2012.

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Book chapters on the topic "Femoral artery bypass grafts"

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Martuscelli, E. "Coronary Artery Bypass Grafts." In Cardiac CT, 171–78. Berlin, Heidelberg: Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-642-14022-8_15.

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Martuscelli, E. "Coronary Artery Bypass Grafts." In Cardiac CT, 191–98. Berlin, Heidelberg: Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-41883-9_15.

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Fukui, Toshihiro. "Controversy: Composite Grafts Versus Individual Grafts." In Off-Pump Coronary Artery Bypass, 101–9. Tokyo: Springer Japan, 2016. http://dx.doi.org/10.1007/978-4-431-54986-4_13.

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Urban, P., and B. Meier. "Intraluminal Stents in Coronary Bypass Grafts." In Coronary Artery Graft Disease, 340–59. Berlin, Heidelberg: Springer Berlin Heidelberg, 1994. http://dx.doi.org/10.1007/978-3-642-78637-2_21.

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Yao, James S. T., and Walter J. McCarthy. "Thoracic aorta to femoral artery bypass." In Vascular Surgery, 187–90. Boston, MA: Springer US, 1994. http://dx.doi.org/10.1007/978-1-4899-6854-8_16.

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Calafiore, A. M., and M. Di Mauro. "Complex Arterial Grafts: Operative Techniques." In Arterial Grafting for Coronary Artery Bypass Surgery, 243–47. Berlin, Heidelberg: Springer Berlin Heidelberg, 2006. http://dx.doi.org/10.1007/3-540-30084-8_31.

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Calafiore, A. M., and M. Di Mauro. "Complex Arterial Grafts: Clinical Results." In Arterial Grafting for Coronary Artery Bypass Surgery, 248–52. Berlin, Heidelberg: Springer Berlin Heidelberg, 2006. http://dx.doi.org/10.1007/3-540-30084-8_32.

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Gaudino, Mario, Giampaolo Niccoli, Giancarla Scalone, Andrea Mazza, Federico Cammertoni, Filippo Crea, and Massimo Massetti. "Competitive Flow and Coronary Artery Bypass Grafts." In Coronary Graft Failure, 277–84. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-26515-5_25.

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Lüscher, T. F., Z. Yang, and B. S. Oemar. "Endothelium and Vascular Smooth Muscle Function of Coronary Bypass Grafts." In Coronary Artery Graft Disease, 193–211. Berlin, Heidelberg: Springer Berlin Heidelberg, 1994. http://dx.doi.org/10.1007/978-3-642-78637-2_12.

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Loop, F. D. "Arterial and Venous Coronary Bypass Grafts: Surgical Techniques and Outcome." In Coronary Artery Graft Disease, 53–69. Berlin, Heidelberg: Springer Berlin Heidelberg, 1994. http://dx.doi.org/10.1007/978-3-642-78637-2_4.

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Conference papers on the topic "Femoral artery bypass grafts"

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Campbell, Triona, Reena Cole, and Michael O’Donnell. "Pressure Induced Strain at Femoral Artery Bypass Graft Junctions." In ASME 2007 Summer Bioengineering Conference. American Society of Mechanical Engineers, 2007. http://dx.doi.org/10.1115/sbc2007-176342.

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Femoral or femoropopliteal artery bypass graft junctions have a predilection for failure due to restenosis. It has been clinically proven that vascular reconstructions tend to restenose within a short period of time [1]. Extensive studies have cited wall shear stresses as being primarily responsible and definite correlations between hydrodynamic stresses in the arterial wall and arterial disease have been shown [2,3]. However intensive investigations into wall shear stresses have lead to conflicting arguments on the proliferation and propagation of stenoses. It was concluded by Freidman [4] that the intima at sites exposed to relatively high or unidirectional shears thickened initially, but as time progressed the greatest thicknesses were ultimately achieved at sites exposed to lower or more oscillatory shear environments. A contradicting view was expressed by Nazemi [5] that low wall shear stress contributed to the onset of atherosclerotic plaque formation, whilst high wall shear stress encouraging plaque growth. A number of studies have however established a statistically significant correlation between pressure and intimal hyperplasia and concluded that blood pressure and not blood flow is the primary factor responsible for the localization of atherosclerosis [6–8].
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Qiao, Aike, and Teruo Matsuzawa. "Hemodynamics of End-to-End Femoral Bypass Graft." In ASME/JSME 2004 Pressure Vessels and Piping Conference. ASMEDC, 2004. http://dx.doi.org/10.1115/pvp2004-3125.

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In the conventional femoral bypassing operation, side-to-end (STE) configuration at the proximal anastomosis and end-to-side (ETS) configuration at the distal anastomosis are usually employed. With these configurations, blood flow from the bypass graft at the distal anastomosis strongly strikes on the floor of the host artery opposite the anastomosis. This will result in the violent variations of hemodynamics in the vicinity of distal anastomosis, and further bring about anastomotic intimal hyperplasia (IH) and restenosis. Consequently, the effectiveness of bypassing surgery is compromised in the medium and long term by the development of these pathological changes. It is widely accepted that hemodynamics is close correlated to the geometry configuration of femoral bypass graft. It is verified that flow field at the distal junction has more influences on the pathogenesis and its aftereffects are more critical because the development of IH and restenosis is prone to occur in that region and endangers the patency of subsequent arteries. Nonuniform hemodynamics, characterized by nonuniform Wall Shear Stress (WSS) and large sustained Wall Shear Stress Gradients (WSSG), is also commonly considered as one of the most important causes among the numerous complex physiological and biomechanical factors. Purpose of the present study is to investigate an alternative geometry configuration to improve the hemodynamics at the vicinity of distal anastomosis and increase the medium and long term patency rate of bypass graft surgery. According to the clinical observation, the stenosed host artery may become fully stenosed after bypassing surgery and the bypass graft is the only way to restore normal blood flow to ischemic limbs. The authors presented a modified bypassing configuration with an end-to-end (ETE) conjunction at the distal anastomosis. In this new model, the proximal graft is arc-shaped with STE junction and the distal graft is sinusoid-shaped with ETE junction. The bypass graft is of the same diameter of d = 8mm as the host femoral artery, so the graft can be connected with the femoral artery smoothly at the distal junction. The polytetrafluoroethylene (PTFE) is employed as the graft material. The blood is assumed to be an isotropic, homogeneous, incompressible, Newtonian continuum having a constant density and viscosity. The vessel walls are assumed to be rigid and impermeable. The blood flow is assumed to be physiologically pulsatile laminar flow. The mean Reynolds number is Rem = 204.7, Womersley number is α = 6.14. The boundary conditions include: the physiologically pulsatile entrance velocities at the inlet section, the no-slip boundary condition on the wall, the symmetric condition in the centerline plane of femoral and graft, and the outlet pressure condition with a reference pressure P = 0 at the exit section. Three-dimensional idealized femoral bypass graft model is developed and discretized. The blood flow in the proposed model is simulated with computational fluid dynamics (CFD) method using the finite element analysis. The temporal and spatial distributions of hemodynamics such as flow patterns and WSS in the vicinity of distal anastomosis during the cardiac cycle were analyzed. Especially, the emphasis here was on the analysis of WSS, the temporal and spatial WSSG and the Oscillating Shear Index (OSI). The simulation results indicated that: (1) the ETE model is featured with small secondary flow; (2) WSS at the distal anastomosis is uniform, WSSG is small, and OSI of the ETE model has not much changes compared with ETS graft. The present study showed that the femoral bypassing configuration with ETE bypass graft was of more favorable hemodynamics, and it could consequently improve the flow conditions and decrease the probability of IH and restenosis. With the consideration of that numerical simulation was proved to be of great help and guidance meaning for the biofluidmechanics research and the biomedical engineering, the results of the present study can be applied to medical device design and clinical treatment planning in addition to the application of computational methods to cardiovascular disease research.
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Chidlow, A., A. C. Meek, I. F. Lane, P. Pate, and C. N. McCollum. "THE THROMBOGENICITY OF PTFE ARTERIAL GRAFTS INCREASES IN THE WEEKS FOLLOWING IMPLANTATION." In XIth International Congress on Thrombosis and Haemostasis. Schattauer GmbH, 1987. http://dx.doi.org/10.1055/s-0038-1643087.

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Despite few failures in the initial weeks, polytetrafluoro-ethylene (PTFE) femoro-popliteal grafts, which have a non-thrombogenic flow surface, frequently occlude between 2 and 6 months following implantation [1]. Radiolabelled platelet uptake was studied during this risk period.In 20 greyhounds, 6cm lengths of 6mm PTFE were implanted in the femoral artery and autologous 111In-platelet accumulation measured 1 and 8 weeks later. Radioactivity over the graft was compared to the contralateral thigh and the daily rise in this ratio expressed as the Thrombogenicity Index (TI). At 8 weeks the graft was excised, 111In-platelet content counted in a well crystal and pseudointimal hyperplasia measured by grid microscopy.Mean (± sem) TI of 0.054±0.02 at 1 week almost doubled in the grafts that remained patent at 8 weeks to 0.10±0.02 (p<0.05). Radioactivity on the excised grafts was 0.012±0.0027 percent of injected activity and this correlated closely with TI at 8 weeks (r=0.83, p<0.001). Even in grafts remaining patent, this late accumulation of radiolabelled platelets correlated closely (r=0.63, p<0.02) with pseudointimal hyperplasia which narrowed the graft by a mean of 18±4.7 percent of luminal area.PTFE grafts had a low initial thrombogenicity which increased by the second month. This rising thrombogenicity, which presumably follows luminal deposition of fibrin and platelets, is associated with pseudointimal hyperplasia which may explain why these grafts frequently occlude in the months following discharge from hospital.1. Veith FJ, Gupta S, Daly V. Management of early and late thrombosis of expanded PTFE femoro-popliteal bypass grafts. Surgery 1980; 87: 531-587.
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Cole, Reena, Triona M. Campbell, and Mark R. D. Davies. "Pressure Induced Stresses and Strains in a Simulated Femoral Artery Bypass Graft Junction." In ASME 2003 International Mechanical Engineering Congress and Exposition. ASMEDC, 2003. http://dx.doi.org/10.1115/imece2003-42947.

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It has been clinically proven that vascular reconstructions tend to restenose within a relatively short period of time. Intimal hyperplasia and smooth muscle proliferation appear to be promoted by the altered intramural stress distributions at the distal anastomosis of the artery-graft junction. This paper examines the pressure induced stresses and strains in a simulated artery and bypass graft junction. Numerical and experimental methods were used to determine both the magnitude and location of the stresses and strains. A Finite Element package and silicon models were used for the in vitro analysis. Initial numerical analysis involved the modeling of a cylinder with homogenous material properties, followed by the modeling of a homogenous graft artery junction under static pressures. These experimental results were then used to validate the numerical model.
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Sankaran, Sethuraman, and Alison L. Marsden. "A Computational Technique for Robust Optimization of Cardiovascular Bypass Graft Surgeries." In ASME 2010 Summer Bioengineering Conference. American Society of Mechanical Engineers, 2010. http://dx.doi.org/10.1115/sbc2010-19095.

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Bypass graft (BG) surgeries involve surgical construction of a graft over a blocked blood vessel. The graft can either be native tissue of the patient or a synthetic material. Some commonly performed BG surgeries include aorto-bifemoral, femoro-popliteal, femoro-tibial, and coronary artery bypass (CABG). The operative mortality rate for CABG is around 3%. Around 15 to 30% of bypass grafts occlude within the first year of surgery, increasing to over 50% after 10 years. Graft incompatibility, and hemodynamic factors such as blood recirculation, low wall shear stress, and abnormal wall shear stress gradients play an important role in the onset and development of intimal thickening and plaque deposition (atherogenesis).
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Campbell, Triona, Reena Cole, Mark Davies, and Michael O’Donnell. "Stress Distributions Along the Inner Wall of the Femoropopliteal Bypass Graft Anastomoses." In ASME 2004 International Mechanical Engineering Congress and Exposition. ASMEDC, 2004. http://dx.doi.org/10.1115/imece2004-59395.

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The distal junction of a femoral or femoropopliteal artery bypass graft has a predilection for failure due to restenosis. However neither the initiation nor proliferation process of atherosclerotic plaque is completely understood. Presently it is hypothesized that the process of atherosclerosis initiates as a result of damage or ‘insult’ to the endothelium. The cause of this initial damage is unknown, although it is widely believed that wall shear stresses are a contributing factor. The primary cause of plaque proliferation has not yet been identified, however it is our belief that intramural pressure plays a significant role. In this study numerical models of the proximal and distal junctions were used to determine both the location and magnitude of the stresses caused by intramural pressure. The simulated artery bypass graft was examined under both static and dynamic conditions.
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Callanan, Anthony, Michael Walsh, and Tim McGloughlin. "The Effects on the Strength of UBM Extracellular Matrix Under Stent Loading: An Experimental and Numerical Study." In ASME 2009 Summer Bioengineering Conference. American Society of Mechanical Engineers, 2009. http://dx.doi.org/10.1115/sbc2009-206892.

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Arterial diseases are a common cause of death in the western world. The last two decades has seen vast improvements in scanning, screening, prognosis and symptom recognition, resulting in a greater number of treatments. A common treatment procedure used is bypass grafting which currently utilize synthetic graft materials, internal thoracic artery, and autologous vein. These treatments are invasive surgical procedures and can have low patency. An alternative treatment for these conditions is endovascular surgery. However these devices have problems such as restenois, migration and stent fracture. Improved design and drug elution have been utilized to enhance the performance, with limited success. The application of Tissue engineering scaffolds to enhance device performance has had limited studies. A Number of studies have looked at Small Intestine Submucosa in stenting applications [1, 2]. One study implanted an ECM (SIS) stent-graft into 8 sheep. The study concluded that the ECM stent graft successfully treated simple and ruptured AAA’s. Another study investigated a stent graft arrangement in the femoral arteries of sheep. The study found that SIS coated stent preformed better than that of PTFE covered stent grafts.
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Thomas, Margaret A., and Victor H. Barocas. "Cryo-Mechanics of Ex Vivo Porcine Femoral Artery." In ASME 2011 Summer Bioengineering Conference. American Society of Mechanical Engineers, 2011. http://dx.doi.org/10.1115/sbc2011-53672.

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CryoPlasty is a therapeutic technique which combines cryo-therapy with angioplasty [1]. The technique helps to make angioplasty more effective by limiting dissection, vessel recoil, and restenosis [2]. Cryotherapy uses a gas to freeze the tissue to about −10 to −20°C at the balloon inflation site [1]. Another benefit is that it does not leave a foreign object implanted in the body [2]. Cryopreservation is also used to keep whole tissues for extended periods of time. Whole artery sections are preserved in this manner at approximately −80 to −190°C to be used as grafts [3]. Prior experiments have examined total cryofreeze-thaw afftect on the mechanical behavior of arteries [3]. Further studies are needed to determine if cryo-damaging an artery has adverse affects on the regional properties of arteries which could lead to changes in how the artery functions mechanically.
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MacLennan, M. J., B. J. Leavitt, J. D. Schmoker, and N. C. Chesler. "Pressure Increases Inert Particle Uptake in Human Saphenous Vein." In ASME 2000 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2000. http://dx.doi.org/10.1115/imece2000-2234.

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Abstract Cardiovascular disease is one of the leading causes of death in the United States, and coronary artery bypass graft surgery (CABG) is one of the mainstays of treatment for this disease [1]. Since artificial vascular grafts suitable for coronary bypass are not yet available, autologous internal mammary artery (IMA) and saphenous vein are used to bypass diseased tissue [1]. While IMA grafts have high long-term patency rates, saphenous vein grafted into the arterial position tends to stenose and eventually thrombose.
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MacLennan, M. J., B. J. Leavitt, J. D. Schmoker, and N. C. Chesler. "Pressure Increases Inert Particle Uptake in Human Saphenous Vein." In ASME 2000 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2000. http://dx.doi.org/10.1115/imece2000-2572.

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Abstract Cardiovascular disease is one of the leading causes of death in the United States, and coronary artery bypass graft surgery (CABG) is one of the mainstays of treatment for this disease (Niklason et al., 1999). Since artificial vascular grafts suitable for coronary bypass are not yet available, the autologous internal mammary artery (IMA) and saphenous vein are used to bypass diseased tissue (Niklason et al., 1999). While IMA grafts have high long-term patency rates, a saphenous vein grafted into the arterial position tends to stenose and eventually thrombose.
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Reports on the topic "Femoral artery bypass grafts"

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Chen, Huiru, Ke Si, Zilan Wang, Xiaoxiao Wu, Hanyu Ni, Yanbing Tang, Wei Liu, and Zhong Wang. Efficacy and safety of external stenting for saphenous vein grafts in coronary artery bypass grafting: a systematic review and meta-analysis. INPLASY - International Platform of Registered Systematic Review and Meta-analysis Protocols, October 2022. http://dx.doi.org/10.37766/inplasy2022.10.0029.

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