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Thèses sur le sujet « Left venricular assist device »

Auteur : Grafiati

Publié le 4 juin 2021

Mis à jour le 8 février 2022

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1

Bruti, Gianpaolo. "Experimental and computational investigations for the development of intro-aortic balloon pump therapy." Thesis, Brunel University, 2016. http://bura.brunel.ac.uk/handle/2438/12476.

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Heart failure (HF) is a widely prevalent state in developing countries, especially among people over 65, with percentages up to 10% of the population in the US. In all developed countries the expenditure related to congestive heart failure consists of a high percentage of the total health care expenditure, reaching 60% in the UK (1991 1). One of the main strategies for dealing with HF is the use of cardiac assist devices. Among these the most widely used device is the Intra-Aortic balloon pump (IABP). The IABP has as the main aims to increase coronary flow during inflation, and decrease end di

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Klotz, Stefan. "Left ventricular assist device (LVAD) induced reverse remodeling." Münster Schüling, 2006. http://deposit.d-nb.de/cgi-bin/dokserv?id=2959073&prov=M&dok_var=1&dok_ext=htm.

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Wong, Alissa Kei. "Efficiency Evaluation of a Left Ventricular Assist Device." VCU Scholars Compass, 2007. http://scholarscompass.vcu.edu/etd_retro/64.

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Most current designs for Left Ventricular Assist Devices (LVAD) are based on rotary pumps due to their small size and lack of valves. However, the majority of FDA approved LVADs are larger, positive displacement pumps. One reason for this may be because positive displacement pumps produce pulsatile flow, similar to that of the natural heart, while rotary pumps produce continuous flow. Continuous flow has been shown to support the circulation for short periods of time during open-heart surgery, but it has seen limited success with long-term support. It is thought that pulsatile flow provide

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4

Falls, Candice. "FRAILTY IN PATIENTS UNDERGOING LEFT VENTRICULAR ASSIST DEVICE IMPLANTATION." UKnowledge, 2019. https://uknowledge.uky.edu/nursing_etds/47.

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Heart failure is a progressive condition that affects over 5.7 million Americans and costs associated with heart failure account for 2-3 % of the national health care budget. The high rates of morbidity and mortality along with increased costs from readmissions associated with advanced heart failure have led to the exploration of advanced treatments such as left ventricular assist devices (LVADs). LVADS have demonstrated morbidity and mortality benefit but cost remains extensive with costs per quality-adjusted years > $400,000. With this in mind, it is important to identify those who are most

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5

Vedi, Manmeet Singh. "Design and construction of a left ventricular cardiovascular assist device." Thesis, Texas A&M University, 2004. http://hdl.handle.net/1969.1/1131.

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Congestive heart failure (CHF) is a debilitating condition that afflicts 4.8 million Americans with an increasing incidence. Each year, there are an estimated 400,000 new cases. The incidence is on the rise as the age of the population is increasing and because most people are surviving their first heart attack. Pharmacological therapies are improving, yet many patients still reach end-stage heart failure and there are too few donor hearts available. This thesis is presented as a first small step in a long process in the design and development of a novel cardiac assist device that would ultim

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6

Akbari, Arvin. "INVERKAN AV LEFT VENTRICULAR ASSIST DEVICE PÅ HÖGERKAMMARFUNKTION EFTER HJÄRTTRANSPLANTATION." Thesis, Malmö universitet, Fakulteten för hälsa och samhälle (HS), 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:mau:diva-26348.

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Då ingen medicinsk behandling längre är tillräcklig anses hjärttransplantation vara det slutliga alternativet för patienter med svår hjärtsvikt (stadie IV). Dock ges endast ett fåtal patienter möjligheten till att få ett nytt hjärta, vilket bland annat beror på organbrist, långa väntetider och annan komorbiditet. Allt fler i denna patientgrupp får stöd av en inopererad hjärtpump; Left Ventricular Assist Device (LVAD) i väntan på transplantation. Syftet med denna studie var att med transthorakal ekokardiografi undersöka om förbehandling med LVAD kan inverka positivt på högerkammarfunktionen äve

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Wang, Yu. "A NEW DEVELOPMENT OF FEEDBACK CONTROLLER FOR LEFT VENTRICULAR ASSIST DEVICE." Master's thesis, University of Central Florida, 2010. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/2386.

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The rotary Left Ventricular Assist Device (LVAD) is a mechanical pump surgically implanted in patients with end-stage congestive heart failure to help maintain the flow of blood from the sick heart. The rotary type pumps are controlled by varying the impeller speed to control the amount of blood flowing through the LVAD. One important challenge in using these devices is to prevent the occurrence of excessive pumping of blood from the left ventricle (known as suction) that may cause it to collapse due to the high pump speed. The development of a proper feedback controller for the pump speed is

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Wang, Yu. "Suction Detection and Feedback Control for the Rotary Left Ventricular Assist Device." Doctoral diss., University of Central Florida, 2013. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/6032.

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The Left Ventricular Assist Device (LVAD) is a rotary mechanical pump that is implanted in patients with congestive heart failure to help the left ventricle in pumping blood in the circulatory system. The rotary type pumps are controlled by varying the pump motor current to adjust the amount of blood flowing through the LVAD. One important challenge in using such a device is the desire to provide the patient with as close to a normal lifestyle as possible until a donor heart becomes available. The development of an appropriate feedback controller that is capable of automatically adjusting the

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VAN, WINKLE MICHAEL G. "PYROLYTIC CARBON STUDY AS AN IMPLANTABLE MATERIAL FOR A LEFT VENTRICLE ASSIST DEVICE." University of Cincinnati / OhioLINK, 2004. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1085776125.

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10

Noor, Mumin. "Interaction of the left ventricle and left ventricular assist device during mechanical circulatory support for advanced heart failure." Thesis, Imperial College London, 2015. http://hdl.handle.net/10044/1/51108.

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The work in this thesis was undertaken to examine clinically significant questions at a time of evolving Left Ventricular Assist Device (LVAD) technology. The main theme of the research was to increase our understanding of the interaction between left ventricle and newer continuous flow LVADs through both in-vitro models and clinical studies with the ultimate aim of improving patient care. The hydrodynamic performance of the two continuous flow LVADs (Thoratec HeartMate II and HeartWare HVAD) was compared in a normothermic, human blood-filled pulsatile mock circulation model under conditions o

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11

Hommel, Matthias [Verfasser]. "Echokardiographische Prognose eines Rechtsherzversagens nach Implantation eines pädiatrischen Left Ventricular Assist Device / Matthias Hommel." Berlin : Medizinische Fakultät Charité - Universitätsmedizin Berlin, 2015. http://d-nb.info/1067442057/34.

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12

Van, Winkle Michael G. "Study of pyrolytic carbon as an implnatable material for a left ventricle assist device." Cincinnati, Ohio : University of Cincinnati, 2004. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=ucin1085776125.

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13

Saito, Tomohiro [Verfasser]. "Aortic valve pathology in patients supported by continuous-flow left ventricular assist device / Tomohiro Saito." Berlin : Medizinische Fakultät Charité - Universitätsmedizin Berlin, 2018. http://d-nb.info/1160514674/34.

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Brown, A. G. "Patient-specific local and systemic haemodynamics in the presence of a left ventricular assist device." Thesis, University of Sheffield, 2012. http://etheses.whiterose.ac.uk/2586/.

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Miklosovic, David Scott. "An experimental evaluation of the non-newtonian scaling effects in a rotodynamic left ventricular assist device /." The Ohio State University, 2000. http://rave.ohiolink.edu/etdc/view?acc_num=osu1488191667183226.

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Patel, Karnal. "Design and development of a pulsatile axial flow blood pump as a left ventricular assist device." Thesis, Brunel University, 2012. http://bura.brunel.ac.uk/handle/2438/11085.

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Each year all over the world, Millions of patients from infants to adults are diagnosed with heart failure. A limited number of donor hearts available for these patients results in a tremendous demand of mechanical circulatory support (MCS) system, either in the form of total artificial heart (TAH) or a ventricular assist device (VAD). Physiologically MCS are expected to provide heart; a time to rest and potential recovery by unloading the ventricle, while maintaining the adequate peripheral as well as coronary circulation. Existing ventricular assist devices (VAD) have employed either displac

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17

Rosenstrauch, Doreen. "Use of autologous auricular chondrocytes for lining left ventricular assist devices." Doctoral thesis, [S.l.] : [s.n.], 2004. http://deposit.ddb.de/cgi-bin/dokserv?idn=972610480.

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Patterson, Laura. "A COMPUTATIONAL STUDY OF CURVATURE IN THE OUTFLOW GRAFT OF A CONTINUOUS FLOW LEFT VENTRICULAR ASSIST DEVICE." VCU Scholars Compass, 2016. http://scholarscompass.vcu.edu/etd/4615.

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Left ventricular assist devices (LVADs) are an increasingly utilized therapy for end-stage heart failure. Thrombosis within the graft from the pump to the aorta has been documented, but is poorly researched. This study examines the effect of graft geometry, as measured by radius of curvature, bend angle, and diameter, on thrombogenic flow patterns within the graft for a range of flow conditions. It also examines the effect blood properties, including viscosity and density, on these flow patterns. The results indicated that radius of curvature had a powerful effect on thrombogenic flow patterns

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19

Vikholm, Per. "Treatment of Right Ventricular Failure through Partial Volume Exclusion : An Experimental Study." Doctoral thesis, Uppsala universitet, Thoraxkirurgi, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-248164.

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Implantation of a left ventricular assist device (LVAD) is a potential treatment in terminal heart failure. Right ventricular (RV) failure is a severe complication in these patients and sometimes requires additional placement of a right ventricular assist device (RVAD). RVAD implantation, however, is an invasive treatment associated with both increased mortality and morbidity. The aim of this thesis was to study whether partial volume exclusion of the RV through a modified Glenn shunt or cavoaortic shunt could treat severe RV failure. The ultimate goal would be to use it as an alternative to a

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20

Guimond, Stephen. "Computational fluid dynamics investigation of the orientation of a pediatric left ventricle assist device cannula to reduce stroke events." Honors in the Major Thesis, University of Central Florida, 2012. http://digital.library.ucf.edu/cdm/ref/collection/ETH/id/561.

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Ventricle Assist Devices (VADs), which are typically either axial or centrifugal flow pumps implanted on the aortic arch, have been used to support patients who are awaiting cardiac transplantation. Success of the apparatus in the short term has led to long term use. Despite anticoagulation measures, blood clots (thrombi) have been known to form in the device itself or inside of the heart. The Ventricle Assist Devices supply blood flow via a conduit (cannula) implanted on the ascending aorta. Currently, the implantation angle of the VAD cannula is not taken into consideration. Since the VADs s

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21

Timms, Daniel Lee. "Design, development and evaluation of centrifugal ventricular assist devices." Queensland University of Technology, 2005. http://eprints.qut.edu.au/16917/.

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Heart disease is the developed world's biggest killer, and the shortage of donor hearts has accelerated the development of mechanical alternatives. Scientists, engineers and clinicians have attempted to replicate the human heart with a mechanical device for over 50 years. Although a number of pulsating devices have been developed, and in some cases worked briefly, they have invariably failed to match the success of heart transplantation. In an attempt to produce a suitable alternative, current research is focused on devices that do not replace the heart; but rather work along side it to

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Kazui, Toshinobu, Phat L. Tran, Tia R. Pilikian, et al. "A dual therapy of off-pump temporary left ventricular extracorporeal device and amniotic stem cell for cardiogenic shock." BIOMED CENTRAL LTD, 2017. http://hdl.handle.net/10150/625812.

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Background: Temporary mechanical circulatory support device without sternotomy has been highly advocated for severe cardiogenic shock patient but little is known when coupled with amniotic stem cell therapy. Case presentation: This case reports the first dual therapy of temporary left ventricular extracorporeal device CentriMag with distal banding technique and human amniotic stem cell injection for treating a severe refractory cardiogenic shock of an 68-year-old female patient. A minimally-invasive off-pump LVAD was established by draining from the left ventricle and returning to the right ax

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Towner, Kali Jean, and Kali Jean Towner. "Hemodynamic Changes Associated with Sub-Optimal Inflow Cannula Angle in the Heartware HVAD - A Hemostatic Model." Thesis, The University of Arizona, 2017. http://hdl.handle.net/10150/624116.

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Pump thrombosis is the epitome of left ventricular assist device dysfunction for end-stage heart failure patients. With the increased utilization of implantable, long-term, left ventricular assist devices (LVADs), understanding the implications associated with device orientation and interaction with the body is exceedingly important. Components associated with pump thrombosis in the Thoratec© HeartMate II™ (HMII) and the HeartWare© HVAD® devices include the inflow cannula, the outflow graft, and the pump elements as well as pump pocket depth for the HMII specifically. Several studies have bee

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Canada, Justin M. "A Comparison of Maximal Exercise Responses among Patients with a Total Artificial Heart, a Left Ventricular Assist Device, or Advanced Heart Failure." VCU Scholars Compass, 2012. http://scholarscompass.vcu.edu/etd/340.

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The purpose of this study was to evaluate graded exercise responses to treadmill exercise in patients with a total artificial heat (SynCardia, Tucson, AZ). Additionally, this study sought to compare the exercise response in total artificial heart (TAH) patients to both advanced heart failure (HF) patients on medical management only and HeartMate II (Thoratec Corp., Pleasanton, CA) left‐ventricular assist device (HMII) patients. For patients with biventricular heart failure the TAH is a viable option to bridge patients until transplant becomes available. Its demonstrated improvement in mortalit

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Kazui, Toshinobu, Nicole Sydow, Mark Friedman, Samuel Kim, Scott Lick, and Zain Khalpey. "A modified Park's stitch to correct aortic insufficiency for bioprosthetic valve at time of left ventricular assist device implant: a case report." BIOMED CENTRAL LTD, 2016. http://hdl.handle.net/10150/622886.

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Background: Aortic valve insufficiency (AI) at the time of left ventricular assist device (LVAD) insertion needs to be corrected, however there is little known about how to manage bioprosthetic valvular AI. Case presentation: A 55-year-old female with dilated cardiomyopathy who previously had a bioprosthetic aortic valve replacement needed a LVAD as a bridge to transplant. Her left ventricular ejection fraction was 10% and had mild to moderate transvalvular AI. She underwent a HeartWare HVAD insertion along with aortic valvular coaptation stitch repair (Park's stitch) to the bioprosthetic valv

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French, Jessica Autumn. "The Parasympathetic Nervous System in Human Heart Failure." Cleveland State University / OhioLINK, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=csu1304615014.

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Derwall, Matthias, Anne Brücken, Christian Bleilevens, et al. "Doubling survival and improving clinical outcomes using a left ventricular assist device instead of chest compressions for resuscitation after prolonged cardiac arrest: a large animal study." BioMed Central Ltd, 2015. http://hdl.handle.net/10150/610308.

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INTRODUCTION: Despite improvements in pre-hospital and post-arrest critical care, sudden cardiac arrest (CA) remains one of the leading causes of death. Improving circulation during cardiopulmonary resuscitation (CPR) may improve survival rates and long-term clinical outcomes after CA. METHODS: In a porcine model, we compared standard CPR (sCPR; n =10) with CPR using an intravascular cardiac assist device without additional chest compressions (iCPR; n =10) following 10 minutes of electrically induced ventricular fibrillation (VF). In a separate crossover experiment, 10 additional pigs were sub

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Doi, Seiko. "Impact of bridge-to-bridge strategies from paracorporeal to implantable left ventricular assist devices on the pre-heart transplant outcome: A single-center analysis of 134 cases." Doctoral thesis, Kyoto University, 2021. http://hdl.handle.net/2433/265167.

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Fix, Robert. "THE COGNITIVE AND FUNCTIONAL IMPACT OF OPEN HEART SURGERY: A PILOT STUDY INCLUDING THREE COMMON PROCEDURES (CORONARY ARTERY BYPASS GRAFT, HEART VALVE REPLACEMENT, AND LEFT VENTRICULAR ASSIST DEVICE)." VCU Scholars Compass, 2018. https://scholarscompass.vcu.edu/etd/5345.

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This study investigated the impact of open heart surgery (Coronary Artery Bypass Graft, Heart Valve Replacement, or Left Ventricular Assist Device placement) on cognition, functional performance, and mood in the three months following surgery. The Montreal Cognitive Assessment (MoCA), Kettle Test (KT), Physical Self Maintenance Scale (PSMS), and Hospital Anxiety and Depression Scale (HD) measured global cognition, functional cognition, functional performance, and mood states, respectively. Thirteen male participants (ages 38 – 75) completed assessments at four time points -- when they were sch

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Legendre, Daniel Formariz. "Estudos de técnicas de texturização e biolização, e desempenho biológico in vitro e in vivo em membrana para um dispositivo de assistência ventricular e coração artificial totalmente implantáveis." Universidade de São Paulo, 2003. http://www.teses.usp.br/teses/disponiveis/82/82131/tde-29082003-152115/.

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Foi desenvolvido um diafragma de elevada vida útil e biocompatibilidade a ser utilizado em um dispositivo de assistência ventricular esquerda(DAV) eletromecânico de dimensões reduzidas e totalmente implantável. Foi realizado teste de resistência do diafragma de poliuretana com superfície texturizada. O teste avaliou sua resistência para experimentos In Vivo de até quinze dias com o DAV implantado em bezerro. Uma superfície de endotélio natural tem excelente tromboresistência. A quantidade e as características da neointima formada em um DAV são determinadas pela superfície do material, hemodinâ

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Chen, Chi-Fu, and 陳基富. "The Hemodynamic Study of Left Ventricular Assist Device." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/87230680150352890336.

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博士<br>國立臺灣大學<br>應用力學研究所<br>92<br>A revised Tai-Ta centrifugal impeller pump was designed to study the hemodynamic interaction of left ventricular assist device (LVAD) with the cardiovascular system in a canine model for pediatrics. After correcting the time delay between flow wave and pressure wave, we could realize the function of heart stroke. The LVAD outflow appeared to be pulsatile that matched with the cardiac cycle. The efficiency of pumping for LVAD inlet inserted directly through apex of heart was better than that through atrium. When the LVAD was operated at a higher rotat

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Chou, Nai-Kuan, and 周迺寬. "Physiologic Analysis of Cardiac Cycle in Implantable Centrifugal Left Ventricular Assist Device - Taita No 1 Ventricular Assist Device." Thesis, 2001. http://ndltd.ncl.edu.tw/handle/94948332215414718775.

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博士<br>國立臺灣大學<br>電機工程學研究所<br>89<br>Abstract Mechanical circulation support should be applied in end-staged heart failure patients when hemodynamic state could be maintained by catecholamine before heart transplantation. Mechanical circulatory support included intra-aortic balloon pumping, ventricular assist device, total artificial heart and extra-corporeal cardiopulmonary bypass. The modern ventricular assist devices can be divided into two main groups - the displacement pumps and the rotary pumps. Between them, the size of the displacement pumps is large and the weight o

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Hung, shu-Mei, and 洪淑美. "Design and Numerical Analysis of a Left Ventricular Assist Device." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/58695352653245500643.

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碩士<br>國立臺灣科技大學<br>機械工程系<br>93<br>Abstract This work intends to study a left ventricular assist device (LVAD) with the aids of pump theory and CFD code Star-CD. At first, a LVAD with 35-mm-diameter and 80mm-length, which is similar to the size listed in literature, is constructed based on the model of axial-flow pump with inlet and outlet guide vanes. Next, the numerical analysis is applied to simulate the turbulent flow field to explore the possibility of the correlations among the flow patterns, the pressure distribution, the shear stress, and the blood’s destruction. The result shows that th

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Guan-yeu, Chen, and 陳冠宇. "Numerical Study for Flow in Phoenix Left Ventricular Assist Device." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/19444667562379450318.

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碩士<br>南台科技大學<br>機械工程系<br>92<br>Recently, the development of Phoenix-7 total artificial heart (TAH) is divided into two forms. One is the artificial heart of the electro-hydraulic TAH system including micro-pump, switching valve chamber, hydraulic chamber, blood chamber, reservoir, inlet/outlet conduit, internal channel, and DC and servo-motor .The other is the pneumatic TAH system including pneumatic pump, diaphragm, bladder, inflow/outflow conduit, and inflow/outflow artificial valve. The Phoenix left ventricular assist device is studied in order to obtain detailed information of its flow pat

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Ming-Feng, Chuang, and 莊銘楓. "Performance Study on a Newly Developed Left Ventricular Assist Device." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/52075376920893454585.

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碩士<br>國立高雄應用科技大學<br>模具工程系<br>97<br>Left Ventricular Assist Devices have a long history of development, but how to increase the pressure head while decreasing the wall shear stress for that improving the durability of the device is still a challenge to scientists. Dealing with this objective, our research focuses on centrifugal pump type and develops a new casing along with an impeller model for this kind of artificial device. Three geometries of casing namely model-1, model-2 and model-3 are generated and compared the analysis results to each others. The computational fluid dynamics software

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Chen, Yien-an, and 陳衍安. "Numerical Analysis and Experimental Scheme of Axial Left Ventricular Assist Device." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/58869444765851850221.

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碩士<br>國立臺灣科技大學<br>機械工程系<br>95<br>In order to prevent from heart disease, TAH and VAD are important production. This research including CFD simulation, mockup fabrication, wireless transcutaneous energy/information transmission system and experimental scheme, is established to generate an axial LVAD. Two designs of rotor vanes and guiding vanes settings are presented, and performance of different blood Insert directions, twist angle, increasing of rotor vanes and critical rpm of rotor are discussed. By the commercial code, STAR-CD, the buoyancy acted on the rotor, cavitations and shear stress c

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Wu, Min-Shen, and 吳忞燊. "A Study Of Optimization Design For A Centrifugal Left Ventricular Assist Device." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/69024739496075252616.

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碩士<br>國立高雄應用科技大學<br>模具工程系<br>99<br>This study investigates factors affect performance of centrifugal Left Ventricle Assist Devices (LVAD).The factors include impeller speed, blade number of impeller, impeller height, clearance between impeller and casing, and casing geometry. The casing profiles were generated from Archimedes spiral equation with different parameter m, using Matlab, and then imported to Solidworks to develop 3-dimensional models. The computational fluid dynamic package, Ansys CFX, was utilized to conduct flow analysis and assess performance of the device. The simulation result

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Fritz, Bryan P. Rosenberg Gerson Paterson Eric G. "Development of a pressure sensing system for a left ventricular assist device." 2009. http://etda.libraries.psu.edu/theses/approved/WorldWideIndex/ETD-3256/index.html.

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Wivholm, Jennifer A. Manning Keefe B. "Flow field study comparing design iterations of a 50 CC left ventricular assist device." 2008. http://etda.libraries.psu.edu/theses/approved/PSUonlyIndex/ETD-3624/index.html.

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Chang, Chih-Chen, and 張智成. "Flow and performance study on newly developed impellers for a left ventricular assist device." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/81824679941167424080.

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碩士<br>南台科技大學<br>機械工程系<br>94<br>The impeller type left ventricular assist device (LVAD) uses rotating impeller pumping blood. It mainly falls two categories. They are the one with centrifugal type impeller and that with axial-flow impeller. The study concentrates on centrifugal type impeller design of the LVAD. Three impeller designs have been proposed. They are an independent rotating impeller, an impeller fastened on a rotating plate, and an impeller located on a casing of rotating plate pair. Flow analysis around the impeller is performed by using the finite volume method to solve the fully

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Rast, Josephine. "Oral health and dental behaviour of patients with left ventricular assist device: a cross-sectional study." 2020. https://ul.qucosa.de/id/qucosa%3A74987.

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Patienten mit Herzinsuffizienz im Endstadium erhalten zunehmend linksventrikuläre Unterstützungssysteme (LVAD) als Dauertherapiemittel oder zur Überbrückung bis zu einer möglichen Herztransplantation. Diese Patientenklientel ist grundsätzlich durch die Driveline, als potenzielle Eintrittsstelle für Mikroorganismen, einem Infektionsrisiko ausgesetzt. Die Mundhöhle beinhaltet diverse Bakterien, die sich auch systemisch verbreiten können und so eine mögliche Quelle für Driveline-Infektionen darstellen. Es ist jedoch unklar, ob bei LVAD-Patienten Erkrankungen der Mundhöhle durch Bakteriämien zu sy

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Wang, Wei-Yu, and 王偉宇. "Design and Development of the Control Circuit for a Coil Magnetic Driven Reciprocating Pump Applied to the Left Ventricular Assist Device." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/69395962262927294595.

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碩士<br>國立臺灣海洋大學<br>機械與機電工程學系<br>100<br>The average human life has been extended as the medical progress, but the function of the organs will be aging as the human getting older. The most serious heart disease which is caused by the aging is heart failure. The heart transplantation remains the most successful treatment in the medical treatment options for heart failure patients. However, the heart donations are few and the implantation of the left ventricular assist device (LVAD) as a bridge to transplant (BTT) or as a permanent support is a good alternative. This research is to develop the

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Dobrovie, Monica. "Reversibility of severe mitral valve regurgitation after left ventricular assist device implantation single-centre observations from a real-life population of patients." 2020. https://ul.qucosa.de/id/qucosa%3A70923.

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This study evaluates the impact of untreated preoperative severe mitral valve regurgitation (MR) on outcomes after left ventricular assist device (LVAD) implantation. Of the 234 patients who received LVAD therapy in the Heart Center Leipzig during a 6-year period, we selected those who had echocardiographic images of good quality and excluded those who underwent mitral valve replacement prior to or mitral valve repair during LVAD placement. The 128 patients selected were divided into 2 groups: Group A with severe MR (n = 65) and Group B with none to moderate MR (n = 63, 28 with moderate MR). W

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Lo, Shih-Chieh, and 羅士傑. "The study of the coils arrangement and the control signals for the electro-magnetic force driving reciprocating pump for the left ventricular assist device." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/36625605876015260838.

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碩士<br>國立臺灣海洋大學<br>系統工程暨造船學系<br>103<br>Abstract The best treatment is the heart implantation for the severe heart failure patients presently; however, this operation cannot be carried until there is a proper donated organ for the patient. The LVAD implantation is one choice to have the extension life time waiting for the proper organ and has been widely used as the treatment in Europe, America, and Japan. The use of LVAD can effectively improve patient survival rates and increase the life time. This study is trying to find the relationship between the coil sets arrangement and the piston mov

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Brejchová, Eliška. "Edukace pacienta s levostrannou srdeční podporou HeartMate II." Master's thesis, 2014. http://www.nusl.cz/ntk/nusl-337076.

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The thesis discusses the education of patients with left ventricular support HeartMate II. Theoretical part is focused on education and its ethical and legal aspects, on the description of the educational process. Furthermore it focuses on heart supports, especially on left ventricular assist device HeartMate II. To provide a comprehensive overview, I have included also information about the anatomy and physiology of the cardiovascular system and the section on heart failure. I described the specifics of nursing care for patients with implanted HeartMate II system and the educational topics th

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Hegarová, Markéta. "Příspěvek vyšetření BNP ke zpřesnění prognózy nemocných s pokročilým srdečním selháním." Doctoral thesis, 2017. http://www.nusl.cz/ntk/nusl-357275.

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Plasma levels of B-type natriuretic peptide (BNP) are a strong and independent predictor of prognosis in patients with advanced heart failure (CHF). However, the importance of this biomarker has been documented only in CHF of common causes such as dilated or ischemic cardiomyopathy. We hypothesized that BNP can serve as a strong predictor of end-stage CHF in group of patients with advanced CHF due to congenital heart disease (CHD) with the right ventricle in systemic position (SRV). The second hypothesis was that BNP monitoring in patients with implanted left ventricular assist device (LVAD) H

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碓氷, 章彦, 康寿大原, 良行高味, 節雄高谷 та 鎮. 川口. "小児用補助人工心臓のための超小型遠心ポンプの研究開発". 2002. http://hdl.handle.net/2237/12882.

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Tylla, Alfred. "Erste Erfahrungen mit der Micro-Diagonalpumpe Deltastream® der Firma Medos (Helmholtz Institut Aachen) als linksventrikulärem Herzunterstützungssystem (LVAD) mit pulsatiler und laminarer Perfusion am Schafsmodell über sieben Tage." Doctoral thesis, 2011. http://hdl.handle.net/11858/00-1735-0000-0006-B2B0-A.

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