Готові списки джерел за темами / CABGs

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Добірка наукової літератури з теми "CABGs"

Автор: Grafiati
Опубліковано: 11 березня 2023

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Статті в журналах з теми "CABGs"

1

Mandell, Harvey N. "Of CABGs and Kings." Postgraduate Medicine 84, no. 6 (November 1988): 50–56. http://dx.doi.org/10.1080/00325481.1988.11700461.

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2

Ramarao, Venugopal, Chandana N. C., and Sunil P. K. "Role of emergency coronary artery bypass grafting in the era of percutaneous interventions." International Surgery Journal 7, no. 4 (March 26, 2020): 1071. http://dx.doi.org/10.18203/2349-2902.isj20201171.

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Анотація:
Background: In acute coronary syndrome, prompt restoration of myocardial blood flow is essential to optimize myocardial salvage and decrease mortality. Coronary artery reperfusion, if performed in a timely manner improves clinical outcomes compared to no reperfusion. Fibrinolysis and percutaneous interventions can restore blood flow in an acutely occluded coronary artery in most of the patients; but in a few subset of patients coronary artery bypass grafting (CABG) is needed to effectively restore blood flow.Methods: A retrospective study was conducted among all CABGs performed during March 2016 - February 2018. During this period, 366 CABGs were performed and 57 patients underwent emergency CABG as per the inclusion criterias. Pre-operative, intra-operative and post-operative data was analysed of these patients. Patients were divided into four groups based on the time of surgery from the time of onset of myocardial infarction. Results: 57 patients underwent emergency CABG with males constituting 94.7% of the study population. 78.9% of them had an ejection fraction less than 35%. 52% presented with low cardiac output status, 10% needed intra-aortic balloon pump support and 15% required mechanical ventilation prior to surgery. All patients received an average of 2.8 grafts. Mortality was 5%Conclusions: Immediate surgical revascularisation of patients presenting with acute MI is feasible. Emergency CABG not only treats the culprit lesion but also achieves complete revascularization and offers a clear advantage for patients. The optimal timing of CABG for patients with acute MI remains difficult to establish.
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3

Perrotti, Andrea, Enrica Dorigo, Camille Durst, Djamel Kaili, Sidney Chocron, and Amedeo Spina. "Exclusive Bilateral Internal Thoracic Artery Grafts for Myocardial Revascularization Requiring Four Anastomoses or More: Outcomes from a Single Center Experience." Thoracic and Cardiovascular Surgeon 65, no. 04 (July 1, 2016): 265–71. http://dx.doi.org/10.1055/s-0036-1584688.

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Introduction Multivessel coronary artery bypass graft (CABG) with bilateral internal thoracic arteries (BITA) has only been uncommon and technically demanding. We describe our experience with BITA only CABGs requiring ≥ 4 anastomoses. Material and Methods The department's database was queried for patients undergoing isolated CABG with ≥ 4 anastomoses. The surgical technique included systematically a right internal thoracic artery (ITA) of left ITA Y graft. The multivariate model included variables with a p < 0.3 at univariate analysis. Results Between January 2006 and December 2009, 251 consecutive patients (71 ± 10 years) (on-pump: 130, off-pump: 121) had CABG with ≥ 4 anastomoses, representing 21% of total isolated CABGs for the same period; all patients received a totally arterial BITA only revascularization. Follow-up was 4.9 ± 1.6 years. Overall and cardiac cumulative survivals were 78 and 92%, respectively, at 5 years. The occurrence of any major postoperative complication was associated with overall and cardiac mortality (odds ratio [OR]: 3.6, 95% confidence interval [CI]: 1.3–9.9 and OR: 5.4, 95% CI: 1.3–21.9, respectively). Major sternal wound complication requiring surgical revision was not associated with impaired glucose control (n = 9; diabetics: 6/82, 7.3%; nondiabetics: 3/169, 1.8%, p = 0.06). Preoperative kidney failure was associated with incomplete revascularization (OR: 6.2; 95% CI: 1.2–33.5), that was unfailingly due to ungraftable right coronary artery targets. Discussion BITA only revascularization was a valuable and safe procedure, with favorable results in terms of morbidity and mortality at a 5 years' follow-up.
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4

Shehata, Nadine, Kumanan Wilson, David Mazer, Paul Hebert, David Streiner, George Tomlinson, and Gary Naglie. "Factors Affecting Physicians’ Decisions to Transfuse Red Blood Cells to Patients Having Coronary Artery Bypass Graft Surgery: A National Survey." Blood 104, no. 11 (November 16, 2004): 2715. http://dx.doi.org/10.1182/blood.v104.11.2715.2715.

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Abstract Decisions about when to transfuse patients having coronary artery disease may impact on patient morbidity and mortality. There is no published data about the factors that influence physicians’ decisions to transfuse red blood cells (RBCs) to patients having coronary artery bypass graft surgeries (CABGs). The objective of this study was to determine the hemoglobin transfusion thresholds and the factors that influence physicians’ decisions when transfusing CABG patients. Methods: This was a cross-sectional study using self-administered mailed questionnaires sent to all anesthesiologists and cardiovascular surgeons in Canada. The survey included a series of patient scenarios for which respondents were to indicate the Hb concentration below which they would transfuse the patient. Factors assessed in the survey included patient age, sex, cardiac index (CI), and myocardial ischemia (MI). Each factor was introduced consecutively in the case scenarios to allow for analysis of each factor separately and the interaction of factors. Data on physicians’ characteristics were also collected. Univariate analysis and mixed effects regression modelling were used to analyze the data. Results: The overall response rate was a 69.3%(n=339/489); 66.8% of all anesthesiologists and 75.7% of all cardiac surgeons responded. Responses were received from anesthesiologists in all 32 cardiac centres in Canada and from cardiac surgeons in 31/32 centres. The mean age of physicians was 46 years (standard deviation (sd)=8.6 years), years of practice was 14 years (sd=8.7 years), CABG cases/centre was 940 (sd=479) and CABG cases/individual was 121 (sd=77). The Hb transfusion thresholds for 6/24 case scenarios are illustrated in the Table. The Hb thresholds were similar for male patients. Univariate analysis revealed that for the base case scenario (i.e. 55 year old male/female), Hb thresholds did not differ significantly according to physician age, sex, years in practice, specialty, academic centre, the number of CABGs/centre/year, or patient sex but differed according to the number of CABGs/individual physician/year (p=0.009 for female case scenario and p=0.02 for the male case scenario), patient age (p&lt;0.001), CI (p&lt;0.001) and MI (p&lt;0.001). Physicians selected the Hb concentration (51%), blood loss (21%), and MI (13%) as the most significant factor affecting their decision to transfuse. Conclusion: Patient age, CI, MI and the number of CABGs/individual physician were found to influence physicians’ transfusion decisions. Future studies are required to elucidate whether transfusions based on these variables affect patient morbidity and mortality. Table: Mean Hemoglobin Transfusion Thresholds For 6 Case Scenarios Case Scenario Mean Hemoglobin (g/L) Standard Deviation (g/L) yo=year old, CI=cardiac index, MI=myocardial ischemia 55 yo female 70 8 55 yo female, CI&lt;2 79 10 55 yo female with MI 78 10 75 yo female 74 8 75 yo female, CI&lt;2 82 10 75 yo female with MI 81 10
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5

Groom, Robert, Joan Tryzelaar, Richard Forest, Kevin Niimi, Giovanni Cecere, Desmond Donegan, Saul Katz, et al. "Intra-operative quality assessment of coronary artery bypass grafts." Perfusion 16, no. 6 (December 2001): 511–18. http://dx.doi.org/10.1177/026765910101600611.

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Early coronary artery bypass graft (CABG) failure is a troubling complication that may result in a wide range of problems, including refractory angina, myocardial infarction, low cardiac output, arrhythmia, and fatal heart failure. Early graft failures are related to poor quality and size of the distal native vascular bed, coagulation abnormalities, or technical problems involving the graft conduits and anastomoses. Unfortunately, graft failure is difficult to detect during surgery by visual assessment, palpation, or conventional monitoring. We evaluated the accuracy and utility of a transit-time, ultrasonic flow measurement system for measurement of CABGs. There were no differences between transit-time measurements and volumetric-time collected samples in an in vitro circuit over a range of flows from 10 to 100 ml/min (Bland and Altman Plot, 1.96 SD). Two hundred and ninety-eight CABGs were examined in 125 patients. Graft flow rate was proportional to the target vessel diameter. Nine technical errors were detected and corrected. Flow waveform morphology provided valuable information related to the quality of the anastamosis, which led to the immediate correction of technical problems at the time of surgery.
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6

Lee, Geraldine A. "Patients Reported Health-Related Quality of Life Five Years Post Coronary Artery Bypass Graft Surgery – A Methodological Study." European Journal of Cardiovascular Nursing 7, no. 1 (March 2008): 67–72. http://dx.doi.org/10.1016/j.ejcnurse.2007.07.005.

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Background: The number of individuals undergoing Coronary Artery Bypass Graft Surgery (CABGS) to treat coronary artery disease is steadily increasing. Aim: The purpose of the study was to describe the cohort's characteristics, their angina and breathless symptoms and report health-related quality of life (HRQoL) five years after CABGS. Methods: One hundred and twenty-eight patients participated in the follow-up study using the quality of life Short-Form 36 (SF-36) questionnaire. Angina and breathless symptoms were also recorded. Results: One hundred and nine patients were interviewed (face-to-face) and 19 completed postal questionnaires. The SF-36 component summaries of the face-to-face patients indicated that their physical (PCS) and mental (MCS) health was relatively good (45.8 and 53.6, respectively, with 0 = worst health and 100 = best health and 50 being the mean score), compared to the postal patients' mean PCS of 30.8 ( p < .001). The postal MCS was also lower but not statistically significant (49.6, p = .081). At follow-up, the majority of patients were asymptomatic in terms of angina and breathlessness compared to their pre-operative status. Conclusion: The findings demonstrate that patient perceived HRQoL five years after CABGS is generally good and patients remain relatively asymptomatic although data collection methods highlight differences in physical HRQoL.
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7

Flood, Ann Barry. "On Saving Time and Saving Money in CABGs." Medical Care 28, no. 1 (January 1990): 3–5. http://dx.doi.org/10.1097/00005650-199001000-00002.

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8

Ghorbani, Banafsheh, Alun C. Jackson, Mohammad Noorchenarboo, Mohammad H. Mandegar, Farshad Sharifi, Zohrehsadat Mirmoghtadaie, and Fatemeh Bahramnezhad. "Comparing the Effects of Gamification and Teach-Back Training Methods on Adherence to a Therapeutic Regimen in Patients After Coronary Artery Bypass Graft Surgery: Randomized Clinical Trial." Journal of Medical Internet Research 23, no. 12 (December 10, 2021): e22557. http://dx.doi.org/10.2196/22557.

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Background Patients undergoing coronary artery bypass graft surgery (CABGS) may fail to adhere to their treatment regimen for many reasons. Among these, one of the most important reasons for nonadherence is the inadequate training of such patients or training using inappropriate methods. Objective This study aimed to compare the effect of gamification and teach-back training methods on adherence to a therapeutic regimen in patients after CABGS. Methods This randomized clinical trial was conducted on 123 patients undergoing CABGS in Tehran, Iran, in 2019. Training was provided to the teach-back group individually. In the gamification group, an app developed for the purpose was installed on each patient’s smartphone, with training given via this device. The control group received usual care, or routine training. Adherence to the therapeutic regimen was assessed using a questionnaire on adherence to a therapeutic regimen (physical activity and dietary regimen) and an adherence scale as a pretest and a 1-month posttest. Results One-way analysis of variance (ANOVA) for comparing the mean scores of teach-back and gamification training methods showed that the mean normalized scores for the dietary regimen (P<.001, F=71.80), movement regimen (P<.001, F=124.53), and medication regimen (P<.001, F=9.66) before and after intervention were significantly different between the teach-back, gamification, and control groups. In addition, the results of the Dunnett test showed that the teach-back and gamification groups were significantly different from the control group in all three treatment regimen methods. There was no statistically significant difference in adherence to the therapeutic regimen between the teach-back and control groups. Conclusions Based on the results of this study, the use of teach-back and gamification training approaches may be suggested for patients after CABGS to facilitate adherence to the therapeutic regimen. Trial Registration Iranian Registry of Clinical Trials IRCT20111203008286N8; https://en.irct.ir/trial/41507
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9

Khalilipur, Ehsan. "When 7 times angioplasty on Saphenous Vein graft would not compete the Native vessel Percutaneous Coronary intervention." Clinical Cardiology and Cardiovascular Interventions 4, no. 7 (April 8, 2021): 01–04. http://dx.doi.org/10.31579/2641-0419/150.

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Coronary artery bypass graft (CABG) has been the first option for revascularization in multiple vessel coronary artery disease. One of the most major obstacles after CABGs is atherosclerotic changes of SVGand more than 50 percent ofSVGare occluded at 10 years and 25 percent show severe stenosis at angiographic follow-up. Whether native vessel percutaneous coronary intervention (PCI) on native vessel or saphenous vein graft intervention is of benefit in these patients is still a debate. In this case report we want to clarify a common clinical scenario in a patient with prior CABG seven years ago which a proper decision in the right time could save many futile efforts. The patient underwent 7 PCI on the diseased SVG on OM with frequent occlusion due to stent thrombosis and in-stent restenosis which finally native vessel antegrade CTO PCI alleviated the problem and patient followed up 2 months after the procedure without any chest pain in his ordinary activities.
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10

Wang, Haoran, Hitomi Anzai, Youjun Liu, Aike Qiao, Jinsheng Xie, and Makoto Ohta. "A Hemodynamic-Based Evaluation of Applying Different Types of Coronary Artery Bypass Grafts to Coronary Artery Aneurysms." Complexity 2020 (June 10, 2020): 1–10. http://dx.doi.org/10.1155/2020/9359340.

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Анотація:
Coronary artery bypass grafts (CABGs), including saphenous vein grafts (SVGs) or left internal mammary artery (LIMA) grafts, are recently applied to treat coronary artery aneurysm (CAA). Surgical outcomes are considered to be related to surgical strategies (types of the bypass graft and whether CAA ligated or not) and the size of the CAA (usually characterized by diameter). However, the understanding of the relationship between the surgical outcomes and the abovementioned factors is limited. Previous studies related to CABG treatments have shown hemodynamic studies could help evaluate surgical outcomes through graft mass flow rate, wall shear stress (WSS), and oscillatory shear index (OSI). It is believed that the hemodynamic study of applying CABGs to CAA, which is not studied yet, could help us understand the different CABG surgeries. The aim of the study was to evaluate the hemodynamic differences among different surgical methods. To do this, eight three-dimensional models were constructed, representing application of SVGs and LIMA grafts to CAAs (whether ligated or not) with diameters two, three, and five times the normal diameter, to perform computational fluid dynamics (CFD) simulation. The lumped-parameter model (LPM) was coupled to the boundary of the 3D models which increase the complexity of the simulation, but it can ensure the stability of the simulation boundary conditions. The results show that SVG (no matter whether ligated or not) hemodynamic characteristics are positive, with an average high graft mass flow rate of 70 ml/min, an average WSS of 0.479 Pa, and a low OSI of 0.001. LIMA with CAA ligation has the same characteristics with higher WSS (average 1.701 Pa). The hemodynamic characteristics of LIMA without CAA ligation are negative, including high reverse mass flow rate and high OSI (0.367). The results indicate that the surgical outcomes of LIMA with CAA ligation are likely to be the best among these models. The surgical outcomes of LIMA without CAA ligation seem to be undesirable due to the high reverse mass flow and high OSI. The CAA diameter may not have a significant effect on surgical outcomes.
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Більше джерел

Дисертації з теми "CABGs"

1

Oliveira, Maria Betânia de. "Estudo de cabos livremente suspensos." Universidade de São Paulo, 1995. http://www.teses.usp.br/teses/disponiveis/18/18134/tde-25042018-121023/.

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Modernamente os cabos vêm sendo empregados como elemento portante de coberturas de grandes vãos - as coberturas pênseis. É finalidade deste trabalho a apresentação da análise estática de cabos livremente suspensos, visando à sua aplicação nestas coberturas. Realiza-se o estudo de cabos - submetidos a carregamento estático uniformemente distribuído em todo o seu vão, a variações de temperatura e a deslocamentos de seus apoios - através do Processo Analítico (equações diferenciais) e do Processo dos Deslocamentos (rigidez tangente). Considera-se a não linearidade geométrica e admite-se a linearidade física. A comparação e análise dos resultados destes processos de cálculo são feitas através de experimentação numérica.
Nowadays cables have been utilized as a resistant element in roofs of large dimensions, the hanging roofs. The objective of this work is to present the static analysis of suspended cables, aiming their application in roofs. A study of cables subjected to static uniform load distributed on the length, variations of temperature and displacements of the supports is done through Analytical Process (differential equations) and Stiffness Process (tangent stiffness). Geometrical non-linear analysis is allowed and physical linear analysis is admitted. The results are compared and analysed through numerical experimentation.
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2

Araújo, Mishene Christie Pinheiro Bezerra de. "Reciclagem de fios e cabos elétricos." Universidade de São Paulo, 2006. http://www.teses.usp.br/teses/disponiveis/3/3133/tde-05092006-135800/.

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A indústria eletro-eletrônica vem aumentando a quantidade de sucatas geradas anualmente. Por este motivo necessita-se de reciclagem, para que se evite o desperdício de matérias-primas e de recursos naturais não-renováveis. A maioria dos produtos eletro-eletrônicos não recebe tratamento pós-consumo sendo depositada em aterros sanitários junto com o resíduo doméstico.Os resíduos eletro-eletrônicos são caracterizados pela presença de metais distribuídos em placas de circuito impresso, fios e cabos elétricos e componentes eletrônicos em geral. No caso da reciclagem de fios e cabos ainda persistem práticas incorretas, como a queima do plástico para aproveitamento do metal, que elimina o polímero em vez de aproveitá-lo. A solução para este problema está no reaproveitamento destes metais e polímeros contidos nos resíduos eletro-eletrônicos. Assim, deixarão de ser perdidas quantidades de alumínio, cobre, e polímeros presentes nos cabos, os quais poderão gerar receitas para o processo, já que estes são indispensáveis ao processo de fabricação. O objetivo deste trabalho é estudar a reciclagem dos cabos tipo cordão paralelo e flexível através de operações unitárias de Tratamento de Minérios. O tratamento da sucata iniciou-se com a seguinte seqüência: moagem, separação granulométrica, separação em meio denso, separação eletrostática, atrição, bateamento e elutriação. Ao final destes processos observou-se que as operações unitárias utilizadas na pesquisa obtiveram concentrados de cobre com baixo grau de contaminação, porém com exceção da elutriação, todas precisam de uma outra técnica para complementá-las. Com os resultados obtidos, concluiu-se que a moagem em moinho de facas com grelha de 3mm seguida de elutriação possibilita a separação do material polimérico, assim como, a obtenção de um concentrado de cobre.
The electro-electronics industry follows increasing the amount of scraps annually generated. For this reason it is necessary to recycle, so that it prevents the waste of raw materials and not renovable natural resources. The majority of the electro-electronic products do not receive any treatment after use and is disposed in municipal landfills together with solid wastes (MSW). The electro-electronic wastes are characterized by metal presence distributed in printed circuits, wires and cables and electronic components in general. In the case of the recycling of wires and cables incorrect practices still persist, as the burning of the plastic for recovery of the metal, thus eliminating the polymer instead of using it to advantage. The solution for this problem is in the recovery of the metals and polymers contained in the electro-electronic wastes. Thus, amounts of aluminum, copper, and polymers contained in the cables will not be lost, that way they will be able to generate resources for the process, since these substances are indispensable to the manufacture process. The objective of this work is to study the recycling of the parallel and flexible cables through Mineral Processing unit operations. The treatment of the scrap was initiated with the following sequence: grinding, size classification, density separation, electrostatic separation, attrition, panning and elutrition. To the end of this process concentrate conductor of copper with low degree of contamination were achieved. However, with exception of elutrition, all they need another technique to complement them. With the gotten results, it can be concluded that the milling in knives mill with 3mm grate followed of elutrition makes possible the separation of the polymeric material, as well as, the attainment of a copper concentrate.
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3

Müller, Thomas. "CABS - Chemnitzer AFS Backup Suite." Universitätsbibliothek Chemnitz, 2003. http://nbn-resolving.de/urn:nbn:de:swb:ch1-200300802.

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4

Cordovés, Dagné de La Caridad Suñé. "Análise de confiabilidade estrutural de cabos umbilicais." Universidade de São Paulo, 2008. http://www.teses.usp.br/teses/disponiveis/3/3151/tde-26032009-174036/.

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Анотація:
O presente trabalho propõe um modelo para avaliar a confiabilidade estrutural do cabo umbilical, levando em consideração os mecanismos de falha por escoamento e por fadiga mecânica. Esta análise é focada na avaliação estrutural das armaduras metálicas, dado que estes elementos suportam quase toda a carga à tração e limitam as deformações axiais da estrutura sem prejudicar significativamente a flexibilidade; desconsidera-se, portanto, o efeito estrutural do núcleo electro-óptico e das camadas polimérica interna e externa. Para esta finalidade são consideradas as tensões originadas pelos carregamentos das ondas do mar atuantes no cabo umbilical durante sua vida em serviço (plataforma semi-submersível GVA 4500 que opera na Bacia de Campos numa lâmina d água de 1000 m), assim como a geometria e as propriedades mecânicas das armaduras de tração utilizadas nos umbilicais dessas plataformas. Através da formulação de um modelo do cabo umbilical feito pelo Método dos Elementos Finitos determinou-se o histórico de tensões atuantes na estrutura, foram estimadas as funções de densidade de probabilidade da tensão estática e da tensão alternada corrigida para curto e longo prazo, as quais caracterizam o carregamento atuante provocado pelas ondas do mar. A caracterização do material é alcançada através de análise química e ensaios de tração. Finalmente, a metodologia proposta, que considera os mecanismos de falha por escoamento e por fadiga mecânica é implementada na prática.
A model to evaluate the structural reliability of the umbilical cable, taking into accounts the failure mechanism for yield strength and mechanical fatigue is proposed in this work. This analysis is focused on the structural evaluation of the metallic armors, given that these elements almost support the whole tensile load and they limit the axial deformations of the structure without harming the flexibility significantly, therefore, the structural effect of the electro-optical nucleus and the internal and external polymeric layers are not considered. For this purpose, the tensions originated by the loading of the waves of the active sea in the umbilical during its service life are considered (semi-submergible platform GVA 4500 that operates in Bacia de Campos into 1000 meters water depth), as well as the geometry and the mechanical properties of the tensile armors used in the umbilical of this platform. Through the formulation of a model for the umbilical cable, developed by the Finite Elements Method, the sequence of active tensions in the structure was determined and then the functions of density of probability of the static tension and of the alternate tension corrected for short and long period were estimated, which characterize the active loading caused by the waves of the sea. The characterization of the material is achieved through chemical analysis and tensile test. Finally, the proposed methodology, which considers the failure mechanisms by yields and mechanical fatigue is implemented in practice.
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5

Mohnsam, Luciana De Almeida. "Simulação numérica do comportamento de cabos viscoelasticos." reponame:Repositório Institucional da FURG, 2008. http://repositorio.furg.br/handle/1/3626.

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Анотація:
Dissertação(mestrado)-Universidade Federal do Rio Grande, Programa de Pós-Graduação em Engenharia Oceânica, Escola de Engenharia, 2008.
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Made available in DSpace on 2013-07-01T21:40:14Z (GMT). No. of bitstreams: 1 Simulação numérica do comportamento de cabos viscoelasticos.pdf: 4203728 bytes, checksum: 7ceef8d6df53ec7479e4f8c76d03d32c (MD5) Previous issue date: 2008
Atualmente, há muito interesse em estudar e criar novos materiais sintéticos que apresentem alta resistência à ruptura. Um exemplo disto é o avanço na construção de linhas de ancoragem para plataformas em operações offshore, que são preferencialmente constituídas, além de outros componentes, por cabos de fibra sintética, como a de poliéster. O objetivo principal deste trabalho foi efetuar a simulação numérica do comportamento de cabos viscoelásticos submetidos a esforços externos até que ocorra a ruptura. Este trabalho é importante para compreender melhor o comportamento de cabos sintéticos utilizados na ancoragem de plataformas, ajudando assim, a estimar de forma mais adequada a durabilidade dos mesmos. No programa construído, considerou-se que o comportamento do cabo é uma sobreposição dos movimentos dos multifilamentos que o constitui. Um modelo viscoelástico foi usado para representar o comportamento de cada multifio e sua dinâmica foi analisada resolvendo numericamente as equações de movimento. Os parâmetros do modelo foram determinados mediante análise de dados obtidos em ensaios dinâmicos e de tração com multifios de poliéster, realizados no Laboratório de Análises de Tensões - POLICAB. Os resultados numéricos foram comparados aos encontrados na literatura e posteriormente aos resultados experimentais, que permitiram também validar o modelo para a simulação do comportamento de um multifilamento de poliéster até a ocorrência de ruptura.
Currently, there has been much interest in studying and creating new synthetic materials with high breaking strength. The advances in construction of anchorage lines designed for operating offshore platforms are, beyond other components, for synthetic fiber ropes, as of polyester. The main goal of this study was to elaborate the numerical simulation of the behavior of viscoelastics ropes submitted the external efforts until the rupture occurs. This study is important to better understand the behavior of synthetic ropes used in platforms anchorage helping, to estimate more adequate form and durabilities of them. In the elaborated program, it was considered that the behavior of the rope is an overlap of the movements of the multi-wires that constitutes it. A viscoelastic model was used to represent the behavior of each multi-wire and its dynamics was analyzed using the numerical solutions of the motion equations. The parameters of the model had been determined by the analysis of data gotten in dynamic assays and tractive with multi-wires of polyester, carried through in the Laboratory of Analyses of Tensions - POLICAB. The results have been compared with ones in the literature and later with the experimental results, that had also validate the model for the simulation of the behavior of a multi-wire of polyester until the imminence rupture.
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Percebon, Leandro Alberto. "Cálculo de parâmetros elétricos série de cabos umbilicais." reponame:Repositório Institucional da UFSC, 2013. https://repositorio.ufsc.br/handle/123456789/107566.

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Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico, Programa de Pós-Graduação em Engenharia Elétrica, Florianópolis, 2013
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Os cabos umbilicais são uma parte importante do sistema de transmissão de energia subaquático. A problemática encontrada no cálculo de parâmetros elétricos de cabos umbilicais, tais como a resistência e indutância série são abordadas com metodologias analíticas e numéricas.Primeiramente é apresentada uma sequência de formulações que permitem analisar cabos mais simples através de equações desenvolvidas para cabos unipolares, nas quais são excluídos os efeitos pelicular e de proximidade. O método dos elementos finitos é introduzido para englobar todos os efeitos dependentes da frequência e a especificidade geométrica apresentada pelos cabos umbilicais. Ao final é apresentada uma comparação entre os resultados obtidos com a metodologia analítica e com a numérica. Um segundo caso comparando os resultados numéricos e medidos para um cabo trifásico é também abordado

Abstract: Power umbilicals play an important role on any subsea power system. The problems encountered in the calculation of umbilical?s electrical parameters, such as series resistance and inductance are discussed with numerical and analytical methodologies. Firstly, a mathematical approach is showed that allows the analysis of simpler single core power cables, where skin and proximity effects are neglected. The finite element method is then introduced to include these effects as well as other frequency dependencies and also allow to model the special needs required in complex geometries founded in power umbilicals. Finally, a comparison between calculated results from analytical and finite element simulation is presented for a single core coaxial cable. A second case, where a three phase power cable is analyzed, is also presented to compare finite element results and measurements.
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Santos, Kenedy Marconi Geraldo dos. "Medição do fator de blindagem de cabos coaxiais." Universidade Federal de Minas Gerais, 2011. http://hdl.handle.net/1843/BUOS-8XZMKB.

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The utilization of electro-electronic systems in cars is becoming more and more indispensable to increase the comfort, safety and for the reduction of CO2 emissions. Embedded electro-electronics is increasingly present in vehicles and it comes in addition to telecommunication systems, cellular telephone and Bluetooth RF system, that operate in several frequencies and emit considerable level of electromagnetic fields. Despite the great benefits and services offered by these systems, they may introduce electromagnetic disturbances in the different environments in which they operate. The shielding quality of coaxial cable is an important parameter to guarantee the electromagnetic compatibility of the electro-electronic systems. This concern involves the signal quality in the cable and the correct functioning of the nearby equipments. It would be interesting to detect such a failure as soon aspossible in order to conceive better systems and avoid unnecessary costs. Within this context, this work presents a simplified methodology to validate a virtual measurement in any coaxial cables, through a comparison with a physical experiment.
O uso de sistemas eletroeletrônicos em automóveis vem assumindo um papel indispensável para o aumento do conforto, segurança e diminuição das emissões de CO2. A eletroeletrônica embarcada está cada vez mais presente no veículo, sem contar os sistemas de telecomunicações, celulares e sistema de RF via Bluetooth,que operam em frequências diversas e com consideráveis níveis de campo eletromagnético. Não obstante dos grandes benefícios e facilidades destes sistemas, eles podem introduzir distúrbios eletromagnéticos nos diversos ambientes em que operam. A qualidade da blindagem de um cabo coaxial é um parâmetro importante para garantir a compatibilidade eletromagnética dos sistemas eletroeletrônicos adjacentes. Esta preocupação envolve a qualidade do sinal presente no cabo e o correto funcionamento dos equipamentos próximos. Será interessante detectar as falhas, logo que possível, a fim de conceber sistemas robustos e evitar custos desnecessários. Dentro deste contexto, este trabalho apresenta uma metodologia simplificada para validar uma medida virtual através de uma comparação com um experimento físico.
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Hafner, Angelo Alfredo. "Modelagem analítica e numérica de cabos de potência submarinos." reponame:Repositório Institucional da UFSC, 2016. https://repositorio.ufsc.br/xmlui/handle/123456789/169093.

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Tese (doutorado) - Universidade Federal de Santa Catarina, Centro Tecnológico, Programa de Pós-Graduação em Engenharia Elétrica, Florianópolis, 2016.
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A modelagem analítica de um sistema de cabos tripolares é um grande desafio devido à configuração não concêntrica dos elementos envolvidos. Por causa dessa limitação, uma modelagem numérica do cabo com o método de elementos finitos em 2D é desenvolvida no intuito de obter os valores da impedância série e da admitância paralela. Para o cálculo da impedância série, usou-se a formulação magnetodinâmica em potencial vetor magnético no domínio da frequência, e para o cálculo da admitância paralela utilizou-se a formulação quase-estática de campo elétrico em potencial escalar elétrico no domínio da frequência. A metodologia é aplicada em cabos encontrados em catálogos de fabricantes. Os resultados numéricos para cada fase são comparados com os resultados analíticos e com valores fornecidos pelo fabricante. Além disso, os resultados numéricos foram validados por meio de comparações com resultados de medições realizadas em um cabo submarino disponível na UFSC.

Abstract : The analytical modeling a three-core cable system is challenging because of non-concentric configuration of the elements involved. Due to this limitation, a numerical modeling of cable with 2D finite element is developed in order to obtain the values of the series impedance and the parallel admittance. The series impedance is calculated using the frequency domain magnetodynamic formulation in magnetic vector potential and, the parallel admittance is obtained using the frequency domain quasi-static formulation of electric field in electric scalar potential. The methodology is applied in cables found in manufacturers catalogs. The numerical results for each phase are compared with the analytical results and with values provided by the manufacturer. Moreover, the numerical results are validated by comparison with measurement results performed in a submarine cable available at UFSC.
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Kjellgren, AnnaCarin, and Linn Persson. "Kvinnors upplevelse av livskvalitet efter CABG-operation." Thesis, Halmstad University, School of Social and Health Sciences (HOS), 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-1666.

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Det största folkhälsoproblemet bland kvinnor är hjärt-kärlsjukdom. Kvinnor är underrepresenterade bland patienter som får behandling i form av CABG-operation . CABG-operation är ett stort kirurgiskt ingrepp som innebär påfrestningar och en stor förändring i livet. Syftet med litteraturstudien var att belysa kvinnors upplevelse av livskvalitet efter CABG-operation. Studien genomfördes som en systematisk litteraturstudie, en metod för att sammanställa alla vetenskapliga arbeten inom ett specifikt område. Sju artiklar som var relevanta till syftet och hade hög vetenskaplig kvalitet analyserades och sammanställdes till resultatet. Resultatet visade att de flesta kvinnor upplevde någon form av problem postoperativt. Kvinnorna upplevde sin fysiska funktion nedsatt efter operation för att under första året återgå till jämförbar nivå med friska kvinnor. Ensamhet påverkar den sociala rehabiliteringen negativt. Familj och vänner var en bidragande faktor till att den sociala rehabiliteringen förbättrades. Postoperativt var kvinnornas totala upplevelse av livskvalitet signifikant förbättrad. Fortsatt forskning bör inriktas på enbart kvinnors upplevelse av livskvalitet efter CABG-operation, för att enklare kunna applicera kunskapen i praktiken.

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Rowson, Quinton Anthony. "Steady-state vibration of DFT locomotive cabs." Thesis, University of Canterbury. Mechanical Engineering, 2001. http://hdl.handle.net/10092/6624.

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Back injuries and other illnesses for Tranz Rails Locomotive Engineers, is claimed to be attributed to vibration of locomotive cabs. The purpose of this research was to conduct a study in order to determine the complex motion of a DFT locomotive cab and to objectively and quantifiably measure the vibration present in the locomotive. This thesis examines the ability of a six Degrees Of Freedom rigid body mathematical model of a DFT locomotive cab to determine the natural frequencies present. The goal was to use this model to provide information on different mount alternatives, in order to reduce vibration. The results of this model were inadequate for the selection of another elastomeric mounting alternative. While experimental test of the locomotive cab showed that the rigid body assumption was valid it was found that there are other continuous vibrations and non-linear effects that are also very important in determining cab vibration. Auto-correlation results from acceleration measurements at the base of the mounts were overlaid with the cross-correlation of the acceleration measurements of the cab side of the mounts. These results showed that the current mounts have 100% transmissibility. In some cases and directions the mount was shown to actually amplify the vibrational input from the locomotive. The amplitude of the steady-state vibration of the locomotive cab that was being transmitted was so great that it rendered the dynamic characteristics of the cab insignificant. From the experimental results, the elastomeric mounts were found to be incapable of attenuating the vibration. In addition, the vibration levels due to locomotive running are found to be well above comfort levels of various publications.
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Книги з теми "CABGs"

1

Cartelón, Fernando. Cabos sueltos. [San José]: Editorial Guayacán, 1997.

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Cabos sueltos. Miami, Fla: Ediciones Universal, 1997.

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Rueda, Paloma. Cabos sueltos. Madrid: Vitruvio, 1996.

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4

Pereyra, Hugo. Atando cabos. Edited by Julien Catherine J. honouree. Lima: Perú, Ministerio de Cultura, 2011.

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Salazar, Filoteo Samaniego. Cabos sueltos. Quito: Ediciones del Banco Central del Ecuador, 1998.

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Cordua, Carla. Cabos sueltos. Santiago de Chile: Editorial Sudamericana, 2002.

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Zapata, Jean Pierre Bravo. Cabos sueltos. Lima, Perú: Hipocampo Editores, 2012.

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8

Bairstow, Lynne. Los Cabos & Baja. 3rd ed. New York: Hungry Minds, 2003.

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Mijares, Enrique. Los cabos sueltos. Durango: Universidad Juárez del Estado de Durango, Dirección de Extensión Universitaria, Espacio Vacio Editorial, 1992.

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Elena, Martinez Marie, Van Fleet Jeffrey, and Wechter Eric B, eds. Fodor's Los Cabos. 3rd ed. New York: Fodor's Travel, 2013.

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Частини книг з теми "CABGs"

1

DeRoo, Scott C., and Micahel Argenziano. "Robotic CABG." In Robotic-Assisted Minimally Invasive Surgery, 261–67. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-96866-7_32.

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Marin-Cuartas, M., and P. M. Davierwala. "Perspective MICS-CABG." In Operative Techniques in Coronary Artery Bypass Surgery, 205–34. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-48497-2_5.

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Perek, Bartłomiej. "Early CABG Failure." In Coronary Graft Failure, 131–38. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-26515-5_11.

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Beukema, Jeanette, and Daniël Pollack. "Coronaire bypassoperatie (CABG)." In Operatieve zorg en technieken, 49–67. Houten: Bohn Stafleu van Loghum, 2019. http://dx.doi.org/10.1007/978-90-368-2237-4_5.

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Osho, Asishana, and Nathaniel B. Langer. "CABG After MI." In Near Misses in Cardiac Surgery, 21–23. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-92750-9_6.

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Perek, Bartłomiej. "Disease Progression After CABG." In Coronary Graft Failure, 139–44. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-26515-5_12.

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Arsenescu Georgescu, Cătălina, Anca Elena Găitan, and Cristian Stătescu. "Myocardial Infarction After CABG." In Coronary Graft Failure, 175–79. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-26515-5_17.

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da Costa, Élide Sbardellotto Mariano. "Heart Failure After CABG." In Coronary Graft Failure, 189–97. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-26515-5_19.

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Potz, Brittany, and George Tolis. "Conduit for Redo CABG." In Near Misses in Cardiac Surgery, 87–89. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-92750-9_22.

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Ye, Siqin. "Coronary Artery Bypass Graft (CABG)." In Encyclopedia of Behavioral Medicine, 555–57. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-39903-0_1256.

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Тези доповідей конференцій з теми "CABGs"

1

Pedroso, Pedro D., Andreas S. Anayiotos, Brad L. Hershey, Evangelos Eleftheriou, and William L. Holman. "Preliminary Near Wall Hemodynamic Evaluation of a Coronary Artery Bypass Graft Model With a Flow Streamlining Implant." In ASME 2002 International Mechanical Engineering Congress and Exposition. ASMEDC, 2002. http://dx.doi.org/10.1115/imece2002-32566.

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Coronary artery disease (CAD) is the leading cause of death in the world today. According to the American Heart Association 529,659 people in 1999 died as a result of CAD [1]. Starting in the 1960’s, surgeons have used Coronary Artery Bypass Graft (CABG) techniques in order to reestablish blood flow to the heart. Today, the procedure remains the same, using autologous grafts, such as the mammary artery and the saphenous vein. An unresolved problem, is that a significant number of CABGs reocclude months to years postoperatively. In the case of Saphenous Vein Grafts (SVGs) typically 50% of these bypasses are totally occluded months to years after the procedure, the remaining half being more than 50% occluded [2]. The re-occlusion of CABGs is due to a process labeled intimal hyperplasia (IH). Investigators have shown that IH, believed by some to be a remodeling process, occurs at branch sites, regions of curvature, and anastomotic junctions [3,4]. At these sites there are low residence times, slow secondary structures, disturbed flow, and areas of recirculation, therefore the onset of IH is believed to be hemodynamically linked. Most recently, floor IH has been attributed to four variables: time averaged wall shear stress (WSS), oscillating shear index (OSI), spatial wall shear stress gradients (WSSG), and temporal WSSG [5]. Adverse values of these parameters, in the case of SVGs, are believed to be caused by impedance mismatch at the anastomosis site. Over time this characteristic causes a bulge at the sinus. Such a morphology additionally contributes to disturbed flows which tend to propagate down the CABG and are believed to play a major role in the development of IH and the eventual failure of the graft.
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Severino da Silva, Márcio, and José Maurício de Barros Bezerra. "Redução de perdas em cabos para-raios em linhas de transmissão aérea por aumento da resistência do laço indutivo." In Simpósio Brasileiro de Sistemas Elétricos - SBSE2020. sbabra, 2020. http://dx.doi.org/10.48011/sbse.v1i1.2365.

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O objetivo deste trabalho é avaliar as perdas em cabos para-raios em linhas de transmissão aéreas. São adotadas duas situações distintas: a primeira é avaliar e quantificar as perdas nos cabos para-raios como são normalmente instalados e a segunda é verificar os efeitos sobre as perdas quando é adotada a medida de inserir resistências no laço que esses condutores formam com a estrutura e o solo. Para determinação das correntes induzidas, e por conseguinte o cálculo das perdas, são realizadas simulações no ATPDraw de uma linha real. O estudo de caso é feito sobre uma linha de transmissão de 175,6 km em 500 kV com quatro cabos condutores por fase e dois cabos para-raios. Os resultados apontaram para uma redução substancial das perdas nas linhas de transmissão com a adoção de resistências em série com os cabos para-raios.
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P. Vieira, Murilo, Mariana R. Fernandes, and Pablo R. Muniz. "Diagnóstico de Degradação de Isolamento de Cabos Elétricos de Baixa Tensão por Análise de Imagem e Classificação por Rede Neural Artificial." In Simpósio Brasileiro de Sistemas Elétricos - SBSE2020. sbabra, 2020. http://dx.doi.org/10.48011/sbse.v1i1.2296.

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PVC (policloreto de vinila) é o material de isolamento mais comumente utilizado em cabos elétricos de baixa tensão. A deterioração do polímero é causada pelo aumento da temperatura quando em regime de operação, que pode favorecer o rompimento do isolamento de cabo elétrico e propiciar fugas de correntes elétricas ou curtos circuitos. Este trabalho avalia experimentalmente a usabilidade da análise de imagem digital e rede neural artificial como ferramenta não invasiva e não destrutiva para indicação do fim da vida útil de cabos elétricos de baixa tensão. O modelo de cor HSV (Tonalidade, Saturação, Brilho) através da componente brilho foi utilizado para caracterizar e avaliar a condição operacional dos cabos elétricos, e a rede neural de múltiplas camadas para analisar os dados. Por fim, a rede neural forneceu resultados bem-sucedidos na determinação do fim da vida útil de cabos elétricos.
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N. Gonçalves, Mariana, Helder De Paula, and André M. Alzamora. "Técnicas para Diagnóstico e Estimativa de Vida Útil de Cabos Subterrâneos: Discussão sobre Alternativas, Aplicações e Potencialidades." In Congresso Brasileiro de Automática - 2020. sbabra, 2020. http://dx.doi.org/10.48011/asba.v2i1.1474.

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O grande desafio para empresas e concessionárias que possuem redes elétricas subterrâneas é identificar os cabos que estão em boas condições de operação, os que demandam manutenção e aqueles que precisarão ser substituídos em um curto intervalo de tempo, para que se torne possível realizar um planejamento adequado dos investimentos e das intervenções de manutenção, otimizando a utilização de seus recursos. Pesquisadores ao redor do mundo há tempos vêm direcionando esforços para conceber uma metodologia capaz de avaliar o estado da isolação destes cabos de modo a fornecer uma estimativa da vida útil restante, assegurando uma operação segura e confiável, com elevada disponibilidade do mesmo. Entretanto, até então nenhuma das técnicas utilizadas isoladamente foi capaz de atender, em definitivo, esta necessidade. Neste contexto, o presente trabalho apresenta uma extensa revisão bibliográfica de diferentes técnicas que são utilizadas para realizar o diagnóstico dos cabos subterrâneos envelhecidos, estimar a taxa de falhas da rede e prever o tempo de vida restante para estes cabos. Estudos de caso de aplicação destas técnicas, assim como os resultados obtidos, reportados na literatura por diferentes empresas, foram compilados e também apresentados neste artigo. A discussão é estabelecida em torno da suficiência dos resultados obtidos na aplicação de cada metodologia para a elaboração dos programas de manutenção preventiva, de planejamento para substituições dos trechos de cabos problemáticos e para orientação na tomada de decisões orçamentárias a longo prazo.
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5

Bax, L., T. J. Demal, B. Reiter, M. Dalén, A. S. Rubino, F. Nicolini, M. De Feo, H. Reichenspurner, and F. Biancari. "Prevalence and Outcome after CABG in Patients with History of Prior CABG surgery." In 50th Annual Meeting of the German Society for Thoracic and Cardiovascular Surgery (DGTHG). Georg Thieme Verlag KG, 2021. http://dx.doi.org/10.1055/s-0041-1725745.

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Savage, Timothy H., and Huy T. Vo. "Yellow cabs as red corpuscles." In 2013 IEEE International Conference on Big Data. IEEE, 2013. http://dx.doi.org/10.1109/bigdata.2013.6691773.

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Hu, Juanjuan. "Supply-demand relationship of cabs." In 2015-1st International Symposium on Social Science. Paris, France: Atlantis Press, 2015. http://dx.doi.org/10.2991/isss-15.2015.110.

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8

De Aquino Gomes, Rayssa, José Maurício de Barros Bezerra, and Márcio Severino da Silva. "Validação laboratorial do dispositivo descarregador em forma de chifre para isolação de cabos para-raios em linhas de transmissão." In Simpósio Brasileiro de Sistemas Elétricos - SBSE2020. sbabra, 2020. http://dx.doi.org/10.48011/sbse.v1i1.2363.

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O uso de cabos para-raios é de extrema importância para a proteção dos condutores de fase nas linhas de transmissão. O modo no qual ele é ligado à estrutura de suporte influenciará nos valores de perdas por efeito Joule. O uso de cabos para raios isolados é uma alternativa para reduzir as correntes induzidas existentes em cabos com múltiplos aterramentos. Para que esse método possa ser aplicado é necessário fazer uso de centelhadores acoplados com isoladores elétricos, isolando o sistema. Em condições anormais de operação, os centelhadores servem de caminho de passagem para a corrente quando a tensão em seus terminais atinge um valor capaz de ionizar o ar existente no espaçamento entre os eletrodos. Neste trabalho foi analisado o comportamento elétrico para o equipamento conhecido como descarregador de chifre. Constatou-se a relação existente entre o comprimento do espaçamento nos valores obtidos de tensão disruptivas, bem como a sua geometria na distribuição do campo elétrico. Foi realizada uma modelagem computacional e uma análise no laboratório do equipamento com resultados muito próximos.
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9

DiFiore, Amanda M., Abdullatif K. Zaouk, Neil J. Mansfield, and S. K. John Punwani. "Whole-Body Vibration in Locomotive Cabs." In ASME 2011 Rail Transportation Division Fall Technical Conference. ASMEDC, 2011. http://dx.doi.org/10.1115/rtdf2011-67016.

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Locomotives produce vibrations and mechanical shocks from irregularities in the track, structural dynamics, the engines, the trucks, and train slack movement (Mansfield, 2005). The different directions of the irregularities give rise to car-body vibrations in multiple axes including the following: • Longitudinal, or along the length of the train (x); • Lateral, or the side-to-side direction of the train (y); • Vertical (z). Some reports suggest that acceleration at the seat pan is greater than that at the floor, indicating that the seat may amplify the vibration (Johanning, et al., 2006; Mansfield, 2005; Oborne & Clarke, 1974; Transport, 1980). The magnitude of vertical vibration in rail vehicles is reportedly well below many other types of vehicles (Dupuis & Zerlett, 1986; Griffin, 1990; Johanning, 1998). However, some research reports that rail vehicles experience far more lateral vibratory motion than cars and trucks (Lundstrom & Lindberg, 1983). Many factors influence the impact of shock felt by the engineer including train speed, consist, engineer control skills, anticipation of the shock, motion amplitude, shock duration, and body posture. Shock events and vibration affect ride quality; however, shocks are less controllable by locomotive design. Common sources of mechanical shock are coupling and slack run-ins and run-outs (Multer, et al., 1998). While there are investigations of whole-body vibration (WBV) in locomotive cabs reported in the literature, there have been no studies to date that have examined long-haul continuous vibrations (> 16 hr). The authors describe a long-haul WBV study collected on a 2007 GE ES44DC locomotive. It is the first in a series of studies sponsored by the Federal Railroad Administration (FRA) to examine WBV and shock in locomotive cabs. The researchers recorded vibration data using 2 triaxial accelerometers on the engineers’ seat: a seat pad accelerometer placed on the seat cushion and a frame accelerometer attached to the seat frame at the base. Data collection occurred over 550 track miles for 16hr 44min. ISO 2631-1 defines methods for the measurement of periodic, random and transient WBV. The focus of ISO 2631-5 is to evaluate the exposure of a seated person to multiple mechanical shocks from seat pad measurements. The research team collected and analyzed vibrations in accordance with ISO 2631-1 and ISO 2631-5. The results from the study as well as future planned long-haul studies will provide a benchmark set of WBV metrics that define the vibration environment of present-day locomotive operations.
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10

Dur, Onur, Sinan T. Coskun, Levent B. Kara, and Kerem Pekkan. "Improved Patient-Specific Coronary Artery Graft Configurations Using CFD Coupled Shape Optimizer." In ASME 2009 Summer Bioengineering Conference. American Society of Mechanical Engineers, 2009. http://dx.doi.org/10.1115/sbc2009-206861.

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Bypass conduits provide an alternative route around critically blocked arteries. Current surgical anastomosis techniques and the design of synthetic coronary artery bypass grafts (CABG) frequently lead to post-surgical complications such as intimal thickening, restenosis and eventual long term graft failure. Pathological hemodynamic states are usually precursors of intimal hyperplasia or platelet deposition and result in graft occlusion. From fluid mechanics perspective, abnormalities in coronary flow include recirculation zones, low/oscillating shear stresses, vortices, and areas of stagnation within the CABG.
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Звіти організацій з теми "CABGs"

1

Hickey, B. California basin study (CaBS). Office of Scientific and Technical Information (OSTI), January 1990. http://dx.doi.org/10.2172/6701665.

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2

Seybold, Patricia. Identifying the RIGHT Customers for CABs. Boston, MA: Patricia Seybold Group, January 2014. http://dx.doi.org/10.1571/bp01-30-14cc.

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3

Gorsline, D. S. California Basin Studies (CaBS). Final contract report. Office of Scientific and Technical Information (OSTI), December 1991. http://dx.doi.org/10.2172/10117876.

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4

Kutchan, Toni M. Center for Advanced Biofuel Systems (CABS) Final Report. Office of Scientific and Technical Information (OSTI), December 2015. http://dx.doi.org/10.2172/1227655.

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5

Harbi, Ali, Kim Lam Soh, Kim Geok Soh, and Haya Ibrahim Ali Abu Maloh. The Effect of Comprehensive Cardiac Rehabilitation Programs on Outcomes for Patients Undergoing Coronary Artery Bypass Graft, A Systematic Review of Contemporary Randomized Controlled Trials. INPLASY - International Platform of Registered Systematic Review and Meta-analysis Protocols, January 2023. http://dx.doi.org/10.37766/inplasy2023.1.0027.

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Review question / Objective: The aim of this systematic review is to investigate the effectiveness of comprehensive CR programs in improving outcomes for patients who had undergone CABG. The explicit statement of the research question considered for this systematic review is formulated by using (PICOS) criteria; Population (patients who had undergone CABG), Intervention (comprehensive CR programs), Comparator (control groups), Outcome (HRQoL, stress, anxiety, depression, readmission, and the occurrence of major adverse cardiac/ cerebrovascularevents MACCE)and Study (RCTs). Condition being studied: The effectiveness of comprehensive cardiac rehabilitation programs in improving the outcomes for patients with coronary artery disease who had undergone coronary artery bypass graft surgery.
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6

Moridi, Mina, Parinaz Onikzeh, Aida Kazemi, and Hadi Zamanian. CABG versus myotomy in symptomatic myocardial bridge patients : A systematic Review and Meta-analysis protocol. INPLASY - International Platform of Registered Systematic Review and Meta-analysis Protocols, November 2021. http://dx.doi.org/10.37766/inplasy2021.11.0088.

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Review question / Objective: The aim of this study is to find which surgical intervention in myocardial bridge ( myotomy or CABG) is more effective in reducing adverse outcomes in symptomatic patients resistant to optimal medical therapy ? Condition being studied: Myocardial bridge : A myocardial bridge (MB) is a congenital heart defect in which a bridge of muscle fibers (myocardium) overlying a section of a coronary artery and the artery is squeezed and normal blood flow is disrupted. Most bridges don't seem to cause symptoms. However, some people can experience angina, or chest pain. In patients with symptoms, first line treatment is medication and if they have symptoms despite optimal medical treatment , invasive measures like CABG or myotomy should be taken.
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7

Small, L. F. California Basin study (CaBS): DOE west coast basin program. Office of Scientific and Technical Information (OSTI), January 1990. http://dx.doi.org/10.2172/5911211.

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8

Armour, Sara C., James B. Goode, Collis H. Lang, Leas R. Tilley, John Craig, Bruce A. Schoneboom, and Doraline Watts. Effects of Dexmedotomidine in the Coronary Artery Bypass Graft (CABG) Patient: A Pilot Study. Fort Belvoir, VA: Defense Technical Information Center, April 2006. http://dx.doi.org/10.21236/ada446260.

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9

Roberts, Scott Alan, and Mark Edward Ferraro. CABS Milestone I3 Report: Demonstration of ability to construct 3D meshes of electrodes using reconstructions from micro-tomography. Office of Scientific and Technical Information (OSTI), December 2016. http://dx.doi.org/10.2172/1505390.

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10

Small, L. F. California Basin study (CaBS): DOE west coast basin program. Progress report 8, 15 November 1989--14 November 1990. Office of Scientific and Technical Information (OSTI), December 1990. http://dx.doi.org/10.2172/10122625.

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