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Zeitschriftenartikel zum Thema "Aortic blood"

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Laurent, Stéphane, Pierre Boutouyrie, and Elie Mousseaux. "Aortic Stiffening, Aortic Blood Flow Reversal, and Renal Blood Flow." Hypertension 66, no. 1 (July 2015): 10–12. http://dx.doi.org/10.1161/hypertensionaha.115.05357.

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Muchada, Raoul, Dominique Cathignol, Bernard Lavandier, Jean Lamazou, and Dominique Haro. "Aortic Blood Flow Measurement." American Journal of Noninvasive Cardiology 2, no. 1-2 (1988): 24–31. http://dx.doi.org/10.1159/000470655.

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Gjurich, Breanne, Parésa Taghavie-Moghadam, Klaus Ley, and Elena Galkina. "L-selectin deficiency decreases aortic B1a and Breg subsets and promotes atherosclerosis." Thrombosis and Haemostasis 112, no. 10 (2014): 803–11. http://dx.doi.org/10.1160/th13-10-0865.

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SummaryThere is a significant recruitment of leucocytes into aortas during atherogenesis. L-selectin regulates leucocyte migration into secondary lymphoid and peripheral tissues and was proposed to play a role in leucocyte homing into aortas. Here, we determine the role of L-selectin in atherosclerosis. L-selectin-deficient Apoe -/- (Sell -/- Apoe -/-) mice had a 74% increase in plaque burden compared to Apoe -/- mice fed a chow diet for 50 weeks. Elevated atherosclerosis was accompanied by increased aortic leucocyte content, but a 50% reduction in aortic B cells despite elevated B cell counts
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R, VINOTH. "TRANSIENT ANALYSIS OF BLOOD FLOW IN FUSIFORM MODELS OF AORTIC ANEURYSMS." International Journal of Psychosocial Rehabilitation 24, no. 04 (February 29, 2020): 1450–62. http://dx.doi.org/10.37200/ijpr/v24i4/pr201114.

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Lehmann, E. D., K. D. Hopkins, R. L. Jones, A. G. Rudd, and R. G. Gosling. "Aortic Distensibility in Patients with Cerebrovascular Disease." Clinical Science 89, no. 3 (September 1, 1995): 247–53. http://dx.doi.org/10.1042/cs0890247.

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1. Non-invasive aortic compliance measurements have been used previously to assess the distensibility of the aorta in several pathological conditions associated with increased cardiovascular risk. We set out to establish whether aortic compliance is abnormal in patients with stroke. 2. Pulse wave velocity measurements of thoracoabdominal aortic compliance were made in 20 stroke patients and 25 age- and sex-matched hospitalized, non-stroke control subjects putatively free of cardiovascular disease. Since compliance varies with non-chronic changes in blood pressure, a blood pressure corrected in
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JONES, DAVID R., RICHARD W. BRILL, and DENNIS C. MENSE. "The Influence of Blood Gas Properties on Gas Tensions and pH of Ventral and Dorsal Aortic Blood in Free-Swimming Tuna, Euthynnus Affinis." Journal of Experimental Biology 120, no. 1 (January 1, 1986): 201–13. http://dx.doi.org/10.1242/jeb.120.1.201.

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We have developed a technique for capture, anaesthetization, instrumentation and release of tuna and have made the first determinations of blood gas values in dorsal and ventral aortae of free-swimming tuna. Dorsal aortic Po2 varied from 34.5 to 91.7 mmHg, and Pcoco2 ranged from 3.7 to 7mmHg. Dorsal aortic blood [pHa = 7.77 ± 0.04 (8), mean ± one S.E.M. (N)] was more alkaline than ventral aortic blood [pHv = 7.65 ± 0.02 (7)]. Warming dorsal aortic blood from 25 to 35 °C in a closed system caused Po2 and PCOCO2 to rise and pH to fall. Oxygen-combining curves forwhole blood were sigmoid [mean Hi
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Azam, M. A., and S. A. A. Salam. "Three Dimensional Analysis of the Blood Flow Regime within Abdominal Aortic Aneurysm." International Journal of Engineering and Technology 3, no. 6 (2011): 621–27. http://dx.doi.org/10.7763/ijet.2011.v3.295.

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Bulpitt, Christopher J., C. Rajkumar, and James D. Cameron. "Central aortic blood pressure measurements." Journal of Human Hypertension 14, no. 8 (August 2000): 531. http://dx.doi.org/10.1038/sj.jhh.1001066.

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Bukoski, R. D., and D. A. McCarron. "Altered aortic reactivity and lowered blood pressure associated with high calcium intake." American Journal of Physiology-Heart and Circulatory Physiology 251, no. 5 (November 1, 1986): H976—H983. http://dx.doi.org/10.1152/ajpheart.1986.251.5.h976.

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The hypothesis that dietary calcium (dCa) alters functional properties of aortic smooth muscle in the spontaneously hypertensive rat (SHR) was tested. At 6 wk of age, Wistar Kyoto (WKY) and (SHR) rats were placed on a control diet containing 1% Ca. The experimental SHR group received a 2%-calcium diet. After an average of either 8 or 15 wk on the diets (WOD), aortic rings were prepared for measurement of passive elastic properties and isometric force development. Differences in blood pressure (BP) were not apparent until after 8 WOD when the BP of SHRs on 2% dCa were 10-15 mmHg lower than SHRs
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Zindovic, Igor, Gustaf Edgren, Shahab Nozohoor, and Ammar Majeed. "ABO blood group and the risk of aortic disease: a nationwide cohort study." BMJ Open 10, no. 10 (October 2020): e036040. http://dx.doi.org/10.1136/bmjopen-2019-036040.

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ObjectivesTo analyse the association between ABO blood group and aortic disease using data on blood donors and transfused patients from Sweden.DesignThis was a retrospective study using data from the Swedish portion of the Scandinavian Donations and Transfusions Database. The association between ABO blood group and aortic disease was analysed using log-linear Poisson regression models and presented as incidence rate ratios (IRRs).SettingSwedish population-based study.ParticipantsThe study cohort consisted of 1 164 561 Swedish blood donors and 961 637 transfused patients with a combined follow-
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Dissertationen zum Thema "Aortic blood"

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Kattach, Hassan. "Blood pressure control in aortic stenosis." Thesis, University of Oxford, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.526473.

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Andresen, Jean M. "Aortic Baroreceptor Reflex Control of Blood Pressure: Effect of Fitness." Thesis, University of North Texas, 1992. https://digital.library.unt.edu/ark:/67531/metadc500922/.

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Aortic baroreflex (ABR) control of blood pressure was examined in 7 untrained (UT) and 8 endurance exercise trained (EET) young men. ABR control of blood pressure was determined during a steady state phenylephrine infusion to increase mean arterial pressure 10-15 mmHg, combined with positive neck pressure to counteract the increased carotid sinus transmural pressure, and low levels of lower body negative pressure to counteract the increased central venous pressure. Functioning alone, the ABR was functionally adequate to control blood pressure. However, ABR control of HR was significantly dimin
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Lantz, Jonas. "On Aortic Blood Flow Simulations : Scale-Resolved Image-Based CFD." Doctoral thesis, Linköpings universitet, Mekanisk värmeteori och strömningslära, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-85682.

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This thesis focuses on modeling and simulation of the blood flow in the aorta, the largest artery in the human body. It is an accepted fact that abnormal biological and mechanical interactions between the blood flow and the vessel wall are involved in the genesis and progression of cardiovascular diseases. The transport of low-density lipoprotein into the wall has been linked to the initiation of atherosclerosis. The mechanical forces acting on the wall can impede the endothelial cell layer function, which normally acts as a barrier to harmful substances. The wall shear stress (WSS) affects en
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Kordzadeh, Ali. "Blood and blood component transfusion on 30-day mortality and morbidity of infra-renal ruptured abdominal aortic aneurysm." Thesis, Anglia Ruskin University, 2017. http://arro.anglia.ac.uk/702581/.

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This thesis for the first time in the literature, through a single cohort (n=82), systematic review and meta-aggregation of the data, has identified that the majority (>85%) of ruptured abdominal aortic aneurysm (rAAA) do not present with coagulopathy. In addition, the thesis for the first time, through a retro and prospective cohort study, has demonstrated that the hemostatic resuscitation protocols derived from military and civilian trauma for the correction of coagulopathy with a blood product ratio of one unit of packed red blood cell to one unit of fresh frozen plasma to one pool of plate
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Kordzadeh, Ali. "Blood and blood component transfusion on 30-day mortality and morbidity of infra-renal ruptured abdominal aortic aneurysm." Thesis, Anglia Ruskin University, 2017. https://arro.anglia.ac.uk/id/eprint/702581/1/Kordzadeh_2017.pdf.

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This thesis for the first time in the literature, through a single cohort (n=82), systematic review and meta-aggregation of the data, has identified that the majority (>85%) of ruptured abdominal aortic aneurysm (rAAA) do not present with coagulopathy. In addition, the thesis for the first time, through a retro and prospective cohort study, has demonstrated that the hemostatic resuscitation protocols derived from military and civilian trauma for the correction of coagulopathy with a blood product ratio of one unit of packed red blood cell to one unit of fresh frozen plasma to one pool o
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McGregor, Brian. "The left ventricle, aortic valve, and arterial tree - a fresh engineering perspective." Thesis, University of Ulster, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.339346.

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Camacho, Fernando Graduate School of Biomedical Engineering Faculty of Engineering UNSW. "Statistical analysis of central aortic blood pressure parameters derived from the peripheral pulse." Awarded by:University of New South Wales. Graduate School of Biomedical Engineering, 2006. http://handle.unsw.edu.au/1959.4/26215.

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With the rise in prevalence of cardiovascular (CV) disease, risk stratification is becoming increasingly important. Accurate characterization of the CV system is required, for which central aortic blood pressure (BP) parameters form an integral part. However, invasive measurement of central aortic BP parameters (aP) is difficult. Therefore, non-invasive methods to estimate aP from the radial pressure pulse (rPulse) have been proposed. To analyze accuracy of estimated aP (aPhat) and applicability in risk stratification and diagnosis, this study presents: (1) a novel representation of the rPuls
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Cheng, Zhuo. "Analysis of blood flow in patient-specific models of type B aortic dissection." Thesis, Imperial College London, 2012. http://hdl.handle.net/10044/1/9178.

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Aortic dissection is the most common acute catastrophic event affecting the aorta. The majority of patients presenting with an uncomplicated type B dissection are treated medically, but 25% of these patients develop subsequent dilatation and aortic aneurysm formation. The reasons behind the long‐term outcomes of type B aortic dissection are poorly understood. As haemodynamic factors have been involved in the development and progression of a variety of cardiovascular diseases, the flow phenomena and environment in patient‐specific models of type B aortic dissection have been studied in this the
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Wolowczyk, Leszek. "Acute normovolaemic haemodilution in abdominal aortic aneurysm repair : the effect on systemic inflammatory response and clinical outcome." Thesis, University of Bristol, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.271910.

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Kumar, Hemant, University of Western Sydney, and of Science Technology and Environment College. "Software analytical tool for assessing cardiac blood flow parameters." THESIS_FSTA_XXX_Kumar_H.xml, 2001. http://handle.uws.edu.au:8081/1959.7/392.

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Introduction of Doppler ultrasound techniques into the Intensive Care setting has revolutionised the way haemodynamic status is monitored in the critically ill. However, in order to increase the usefulness of these techniques, the Doppler signal and its spectrum need to be further analysed in ways to facilitate a better clinical response. Extensive processing of the Doppler spectrum on Diagnostic ultrasound machines is limited by the real time performance considerations. It was therefore proposed that the spectral information from these systems be extracted off-line and full set of analytical
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Bücher zum Thema "Aortic blood"

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Borst, H. G. Surgical treatment of aortic dissection. New York: Churchill Livingstone International, 1996.

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Shinichi, Takamoto, and SpringerLink (Online service), eds. Advances in Understanding Aortic Diseases. Tokyo: Springer Japan, 2009.

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Klicpera, Martin. Chronic aortic regurgitation: Prognostic parameters for patients with chronic aortic regurgitation undergoing aortic valve replacement : value of invasive and non-invasive methods and pharmacological interventions (systemic vasodilation). Wien: Facultas Universitätsverlag, 1985.

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Enrique, Criado, and SpringerLink (Online service), eds. Aortic Aneurysms: Pathogenesis and Treatment. Totowa, NJ: Humana Press, 2009.

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Clinical application of intra-aortic balloon pump. 3rd ed. Armonk, N.Y: Futura Pub. Co., 1998.

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G, Hakaim Albert, ed. Current endovascular treatment of abdominal aortic aneurysms. Oxford: Blackwell Pub., 2005.

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Morash, Mark D. Surgery of the aorta and its body branches. Shelton, Conn: People's Medical Pub. House-USA, 2010.

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Stoney, Ronald J. Wylie's atlas of vascular surgery. Philadelphia: J.B. Lippincott Co., 1992.

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Stoney, Ronald J. Wylie's atlas of vascular surgery. Philadelphia: Lippincott, 1993.

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Luther, Bernd, Ralph I. Ru ckert, and Wolfgang Ru diger Hepp. Chirurgie der abdominalen und thorakalen Aorta. Berlin: Springer-Verlag, 2010.

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Buchteile zum Thema "Aortic blood"

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Singer, M. "Continuous Noninvasive Aortic Blood Flow Monitoring." In Anaesthesia, Pain, Intensive Care and Emergency Medicine — A.P.I.C.E., 819–27. Milano: Springer Milan, 1996. http://dx.doi.org/10.1007/978-88-470-2203-4_76.

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von Knobelsdorff-Brenkenhoff, Florian, and Alex J. Barker. "4D Flow MR: Insights into Aortic Blood Flow Characteristics." In Surgical Management of Aortic Pathology, 435–45. Vienna: Springer Vienna, 2019. http://dx.doi.org/10.1007/978-3-7091-4874-7_28.

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Melissano, Germano, Luca Bertoglio, Enrico Rinaldi, and Roberto Chiesa. "Surgical Anatomy of the Blood Supply to the Spinal Cord." In Surgical Management of Aortic Pathology, 1049–59. Vienna: Springer Vienna, 2019. http://dx.doi.org/10.1007/978-3-7091-4874-7_75.

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Reid, Amy J., and Dianna M. Milewicz. "Arteries, Smooth Muscle Cells and Genetic Causes of Thoracic Aortic Aneurysms." In Inflammatory Diseases of Blood Vessels, 126–35. Oxford, UK: Wiley-Blackwell, 2012. http://dx.doi.org/10.1002/9781118355244.ch12.

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Vasava, P., P. Jalali, and M. Dabagh. "Computational Study of Pulstile Blood Flow in Aortic Arch: Effect of Blood Pressure." In IFMBE Proceedings, 1198–201. Berlin, Heidelberg: Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-642-03882-2_318.

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Svensson, Johan, Roland Gårdhagen, Einar Heiberg, Tino Ebbers, Dan Loyd, Toste Länne, and Matts Karlsson. "Feasibility of Patient Specific Aortic Blood Flow CFD Simulation." In Medical Image Computing and Computer-Assisted Intervention – MICCAI 2006, 257–63. Berlin, Heidelberg: Springer Berlin Heidelberg, 2006. http://dx.doi.org/10.1007/11866565_32.

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Muchada, R., and D. Cathignol. "Esophageal Measurement of Aortic Blood Flow by Echo-Doppler." In Update in Intensive Care and Emergency Medicine, 356–65. Berlin, Heidelberg: Springer Berlin Heidelberg, 1987. http://dx.doi.org/10.1007/978-3-642-83042-6_45.

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Šeta, Berin, Muris Torlak, and Alija Vila. "Numerical Simulation of Blood Flow Through the Aortic Arch." In IFMBE Proceedings, 259–68. Singapore: Springer Singapore, 2017. http://dx.doi.org/10.1007/978-981-10-4166-2_39.

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Gagaev, A. V., Anton L. Maximov, I. E. Soboleva, E. V. Chebotar, A. A. Charov, M. V. Riazanov, and I. V. Gagaeva. "Effect of myocardial revascularization on the blood flow volume in carotid arteries." In Cerebral Protection in Cerebrovascular and Aortic Surgery, 75–78. Heidelberg: Steinkopff, 1997. http://dx.doi.org/10.1007/978-3-642-95987-5_10.

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Chow, G., I. G. Roberts, P. Fallon, M. Onoe, A. Lloyd-Thomas, M. J. Elliott, A. D. Edwards, and F. J. Kirkham. "The relation between arterial oxygen tension and cerebral blood flow during cardiopulmonary bypass." In Cerebral Protection in Cerebrovascular and Aortic Surgery, 119–23. Heidelberg: Steinkopff, 1997. http://dx.doi.org/10.1007/978-3-642-95987-5_15.

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Konferenzberichte zum Thema "Aortic blood"

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Fukui, Tomohiro, and Koji Morinishi. "Influence of Sinus of Valsalva on Aortic Valve Movements by Lattice Boltzmann Method." In ASME-JSME-KSME 2011 Joint Fluids Engineering Conference. ASMEDC, 2011. http://dx.doi.org/10.1115/ajk2011-19021.

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Aortic valve is a membrane that plays an important role in controlling effective outputs of blood flow from the heart. Aortic stenosis is a disease that aortic valves barely open in systole, which cause considerable reduction of amount of blood flow. It is important to know aortic valve movements due to blood flow in order to consider mechanism of development of the aortic stenosis. In this study, we consider the influence of the sinus of Valsalva on aortic valve movements by Lattice Boltzmann method. The virtual flux method is applied to describe thin aortic valve leaflets. The shape of the s
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Amabili, Marco, Kostas Karazis, Rosaire Mongrain, and Nastaran Shahmansouri. "A Model for the Nonlinear Buckling of Human Aorta." In ASME 2012 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/imece2012-89141.

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Human aortas are subjected to large mechanical stresses due to blood flow pressurization and through contact with the surrounding tissue. It is essential that the aorta does not lose stability by buckling for its proper functioning to ensure proper blood flow. A refined reduced-order bifurcation analysis model is employed to examine the stability of an aortic segment subjected to internal blood flow. The structural model is based on a nonlinear cylindrical orthotropic laminated composite shell theory that assumes three aortic wall layers representing the tunica intima, media and adventitia. Th
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Kulp, Scott, Zhen Qian, Mani Vannan, Sarah Rinehart, and Dimitris Metaxas. "Patient-specific aortic valve blood flow simulations." In 2014 IEEE 11th International Symposium on Biomedical Imaging (ISBI 2014). IEEE, 2014. http://dx.doi.org/10.1109/isbi.2014.6868026.

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Wang, Jing, Suzie Brown, and Stephen W. Tullis. "Oscillatory Blood Flow in a Deformable Human Aortic Arch." In ASME 2011 Summer Bioengineering Conference. American Society of Mechanical Engineers, 2011. http://dx.doi.org/10.1115/sbc2011-53676.

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The aorta is the largest artery in humans, stemming from the left ventricle of the heart and stretching down to the abdomen. It is responsible for distributing oxygenated blood to the rest of the body during each cardiac cycle. The pulsatile blood flow is complex in nature and has been previously modeled computationally in an effort to understand its effect on cardiovascular diseases and medical device design interaction [4,8–9]. However, the majority of these models either treat the vessel wall as rigid or have significantly simplified geometries, which from a physiological perspective are no
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Mori, Daisuke, Hao Liu, and Takami Yamaguchi. "Effects of Distortion of the Aorta on the Blood Flow and Its Significance on the Localization of High Wall Shear Stress Region." In ASME 2000 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2000. http://dx.doi.org/10.1115/imece2000-2538.

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Abstract The aorta is the largest artery in the body. It consists of the ascending aorta that leaves the left ventricle, the aortic arch where it curves about 180°, and the descending aorta. Three prominent branches to the head and upper limbs leave the aortic arch. In addition to this complex configuration, it was recently pointed out that the centerline of the aortic arch does not lie in a plane, and has a three dimensional (3D) distortion. This distortion induces very strong deviation of the 3D structure of the blood flow from that usually assumed to occur in flows in simple curved pipes (C
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Minagawa, Tadanori, Yoshifumi Saijo, Sri Oktamuliani, Takafumi Kurokawa, Hiroyuki Nakajima, Kaoru Hasegawa, Takayuki Matsuoka, et al. "Left Ventricular Blood Flow Dynamics In Aortic Stenosis Before And After Aortic Valve Replacement." In 2018 40th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC). IEEE, 2018. http://dx.doi.org/10.1109/embc.2018.8512954.

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Bouaou, Kevin, Ioannis Bargiotas, Damian Craiem, Gilles Soulat, Thomas Dietenbeck, Sophia Houriez--Gombaud-Saintonge, Alain De Cesare, et al. "Relative Aortic Blood Pressure Using 4D Flow MRI: Associations with Age and Aortic Tapering." In 2017 Computing in Cardiology Conference. Computing in Cardiology, 2017. http://dx.doi.org/10.22489/cinc.2017.080-180.

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Wang, Jinfeng, Leren Tao, Yonghong Wang, Lihao Huang, Shuhong Zhang, Mengfang Liu, Jianqing Wu, Yongfu Li, Decheng Xi, and Zhigao Zheng. "The Experimental Study on Cryofreeze-Drying of Porcine Aortic." In ASME 2009 Second International Conference on Micro/Nanoscale Heat and Mass Transfer. ASMEDC, 2009. http://dx.doi.org/10.1115/mnhmt2009-18296.

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At present, the vascular tissue disease has become the major cause to against people’s health, vascular graft is an effective means for the treatment of vascular tissue disease, but the preservation of blood vessels has always been a big challenge. This paper based on the conduct of porcining aortic cryofreeze-drying, with using micro-CT to track the whole drying process, expect to reveal what vascular morphology changes have taken place during the process of cryofreeze-drying, and take a comparative analysis of porcine aortic mechanical properties between freeze-dried after the restoration of
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Ghasemi, Zahra, Chang-Sei Kim, Eric Ginsberg, John Duell, Anuj Gupta, and Jin-Oh Hahn. "Estimation of Central Aortic Blood Pressure From Non-Invasive Cuff Pressure Oscillation Signals via System Identification." In ASME 2016 Dynamic Systems and Control Conference. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/dscc2016-9785.

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This paper presents a model-based system identification approach to estimation of central aortic blood pressure waveform from non-invasive cuff pressure oscillation signals. First, we developed a mathematical model that can reproduce the relationship between central aortic blood pressure waveform and non-invasive cuff pressure oscillation signals at diametric locations by combining models to represent wave propagation in the artery, arterial pressure-volume relationship, and mechanics of the occlusive cuff. Second, we formulated the problem of estimating central aortic blood pressure waveform
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Speelman, L., E. Moltzer, K. van der Heiden, P. van Heijningen, A. F. W. van der Steen, J. Essers, F. Gijsen, and J. Wentzel. "Biomechanical Characteristics of Aortic Aneurysms Generated in Fibulin-4 Deficient Mice." In ASME 2012 Summer Bioengineering Conference. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/sbc2012-80590.

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Aortic aneurysms affect approximately 5% of the elderly population and aneurysm rupture is responsible for a significant number of deaths in the western world. Risk factors for aortic aneurysm include high cholesterol, high blood pressure, and smoking. Fibulin-4 is a glycoprotein, which is expressed in medial layers of blood vessels and a critical component for the structural integrity and elasticity of the aortic wall [1]. Mice with reduced levels of Fibulin-4 develop aortic abnormalities similar to Fibulin-4 patients, such as dilation of the ascending aorta. A 4-fold reduction of Fibulin-4 e
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Berichte der Organisationen zum Thema "Aortic blood"

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Fisher, Jay B., Richard C. Dennis, C. R. Valeri, Jonathan Woodson, and Jeanne E. Doyle. Effect of Graft Material on Red Blood Cell Loss Following Aortic Surgery. Fort Belvoir, VA: Defense Technical Information Center, July 1990. http://dx.doi.org/10.21236/ada360187.

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