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Dissertations / Theses on the topic 'Ventricular function'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

McCormick, Matthew. "Ventricular function under LVAD support." Thesis, University of Oxford, 2012. http://ora.ox.ac.uk/objects/uuid:0d49ba30-b508-4c69-9ba6-b398d4338c01.

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This thesis presents a finite element methodology for simulating fluid–solid interactions in the left ventricle (LV) under LVAD support. The developed model was utilised to study the passive and active characteristics of ventricular function in anatomically accurate LV geometries constructed from normal and patient image data. A non–conforming ALE Navier–Stokes/finite–elasticity fluid–solid coupling system formed the core of the numerical scheme, onto which several novel numerical additions were made. These included a fictitious domain (FD) Lagrange multiplier method to capture the interaction

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2

Clark, Simon John. "Right ventricular function in respiratory distress syndrome." Thesis, University of Liverpool, 2001. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.250478.

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3

Hedman, Anders. "Noninvasive evaluation of the effects of coronary artery bypass grafting on myocardial function /." Stockholm, 2006. http://diss.kib.ki.se/2006/91-7140-761-8/.

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4

Danton, Mark Henry Dunn. "Studies in right ventricular function : employing the conductance catheter method for ventricular volume determination." Thesis, Queen's University Belfast, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.326470.

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5

Small, Alexander. "Assessing ventricular function in patients with atrial fibrillation." Thesis, University of Glasgow, 2012. http://theses.gla.ac.uk/3564/.

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The Frank-Starling law states that the stroke volume of a regular cardiac beat increases in response to an increase in the volume of blood filling the heart. If this law applies in atrial fibrillation (AF) as well as in sinus rhythm (SR) then cardiac function will depend on the duration of diastole in the preceding beat as well as the duration of the indexed beat. Aim: The aim of this thesis was to develop a series of tools which would allow an assessment of the changes in cardiac function from one beat to the next in AF and SR. A secondary aim was to find a means of describing rhythm in a way

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6

Macnee, W. "Right ventricular function in chronic bronchitis and emphysema." Thesis, University of Glasgow, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.383973.

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7

Maret, Eva. "Noninvasive Evaluation of Myocardial Ischemia and Left Ventricular Function." Doctoral thesis, Linköpings universitet, Klinisk fysiologi, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-18315.

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The general aim of this thesis was, following the path of the ischemic cascade, to evaluate the feasibility of some new non-invasive techniques for the detection of myocardial ischemia, the extent of infarcted myocardium, and for the quantification of systolic left ventricular function. Reduced longitudinal myocardial velocity and displacement may be early signs of ischemia. We evaluated the diagnostic sensitivity and specificity of pulsed tissue Doppler for the detection of ischemia and scar during dobutamine stress testing and compared it with myocardial perfusion scintigraphy (SPECT) in pat

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8

Müller-Brunotte, Richard. "Diastolic heart function in hypertension-induced left ventricular hypertrophy /." Stockholm, 2006. http://diss.kib.ki.se/2006/91-7140-898-3/.

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9

Flannery, Daniel John. "Noninvasive assessment of ventricular function after acute myocardial infarction." Thesis, Queen's University Belfast, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.335937.

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10

Clarkson, Peter Bruce Mark. "Studies of left ventricular diastolic function inhealth and disease." Thesis, University of Dundee, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.337397.

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11

Chang, Jessica T. (Jessica Tzung-Min). "The formation and function of the brain ventricular system." Thesis, Massachusetts Institute of Technology, 2012. http://hdl.handle.net/1721.1/72618.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Biology, 2012.<br>This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.<br>Cataloged from student submitted PDF version of thesis.<br>Includes bibliographical references.<br>The brain ventricular system is composed of a highly conserved set of cavities that contain cerebrospinal fluid (CSF), a protein-rich fluid essential for brain function. However, little is known about the function of embryonic CSF (eCSF), or the mechanisms of CSF prod

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12

Long, Karen Jane. "Echocardiographic studies of valvular and ventricular function in horses." Thesis, University of Edinburgh, 1993. http://hdl.handle.net/1842/30398.

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This thesis evaluates echocardiography in the assessment of the equine heart. Echocardiography is employed extensively in human medicine to differentiate the origin of cardiac murmurs and to assess ventricular performance. Such a noninvasive method would be valuable in equine medicine where routine diagnostic techniques, used successfully in other species, are of little value. Publications concerning the origins of cardiac murmurs, the indications for echocardiography in human medicine, and the limited studies on echocardiography in horses have been reviewed. The aims of Part 1 of this work we

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13

PATTONERI, PAOLO. "Left ventricular myocardial performance." Doctoral thesis, Università degli Studi di Roma "Tor Vergata", 2010. http://hdl.handle.net/2108/1163.

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Recentemente Tei e collaboratori, hanno proposto un nuovo indice Doppler-derivato in grado di valutare simultaneamente la funzione sistolica e diastolica. Questo indice di performance cardiaca (MPI), definito come la somma del tempo di contrazione isovolumetrica e tempo di rilasciamento isovolumetrico diviso per il tempo di eiezione ventricolare sinistro, è considerato di facile esecuzione, non dipendente dalla geometria ventricolare, non invasivo, riproducibile e indipendente dalla frequenza cardiaca e dalla pressione arteriosa. L’MPI ha dimostrato di avere un’importante utilità clinica. È i

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14

Mendes, Paulo Roberto Araújo 1968. "Função pulmonar e remodelamento ventricular esquerdo em indivíduos hipertensos = Lung function and left ventricular remodeling in hypertensive subjects." [s.n.], 2014. http://repositorio.unicamp.br/jspui/handle/REPOSIP/312297.

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Orientador: Wilson Nadruz Júnior<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Ciências Médicas<br>Made available in DSpace on 2018-08-25T05:29:30Z (GMT). No. of bitstreams: 1 Mendes_PauloRobertoAraujo_M.pdf: 976609 bytes, checksum: d5b069ade658cb23f9494d04dbbb255d (MD5) Previous issue date: 2014<br>Resumo: Pacientes hipertensos estão predispostos ao remodelamento do ventrículo esquerdo (VE) e frequentemente apresentam queda na função pulmonar quando comparados à população geral. Neste estudo investigamos a associação entre dados espirométricos e ecocardiográfic

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15

Zhao, Ying. "Effect of valve replacement for aortic stenosis on ventricular function." Doctoral thesis, Umeå universitet, Institutionen för folkhälsa och klinisk medicin, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-46809.

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Background：Aortic stenosis (AS) is the commonest valve disease in the West. Aortic valve replacement (AVR) remains the only available management for AS and results in improved symptoms and recovery of ventricular functions. In addition, it is well known that AVR results in disruption of LV function mainly in the form of reversal of septal motion as well as depression of right ventricular (RV) systolic function. The aim of this thesis was to study, in detail, the early and mid-term response of ventricular function to AVR procedures (surgical and TAVI) as well as post operative patients’ exercis

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16

Leung, Dominic Y. C. South Western Sydney Clinical School UNSW. "Exercise and left ventricular function in chronic mitral valve insufficiency." Awarded by:University of New South Wales. South Western Sydney Clinical School, 2002. http://handle.unsw.edu.au/1959.4/18808.

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The projects of this thesis examine the complex interaction between isotonic exercise, functional capacity, exercise-induced myocardial ischaemia, severity of regurgitation and left ventricular function in patients with significant chronic mitral regurgitation. The concept of left ventricular contractile reserve, i.e. the ability of the left ventricle to increase its contractility and decrease its end systolic volume with isotonic exercise, is explored. In patients with chronic isolated mitral regurgitation without coronary disease, isotonic exercise was associated with a slight decrease in le

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17

Jacob, Gary. "Quantifying regional left ventricular function using spatio-temporal tracking techniques." Thesis, University of Oxford, 1999. http://ora.ox.ac.uk/objects/uuid:051f5820-e6fb-4757-8669-b464fb050db9.

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Increasingly, diagnosis of cardiac disease, relies on computer processing of images to aid decision making. In this thesis, we use echocardiography, which is the most widely used cardiac imaging modality to study the motion of the left ventricle. Currently, clinical reporting of echocardiography examinations is operator-dependent and largely qualitative. Commercially available software does not track the left ven- tricle. Also, it does not provide quantification of regional function. This thesis establishes a framework for the quantitative regional analysis of left ven- tricular function. The

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18

Levin, Andrew Ian. "A study of right ventricular function during one lung anesthesia." Thesis, Stellenbosch : University of Stellenbosch, 2004. http://hdl.handle.net/10019.1/16060.

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Dissertation (PhD)--University of Stellenbosch, 2003.<br>ENGLISH ABSTRACT: Background to the study OLA can give rise to certain problems: 1. A significant decrease in lung volume is reported to occur in the dependent lung during OLA in the LDP. This decrease in lung volume can result in an acute increase in opposition to RV ejection. The potential problem is that the right ventricle is a thin walled structure that can generate considerably less work than the thicker walled LV. It possesses little reserve to deal with an acute rise in afterload as may occur during acute lung injury or aft

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19

Boët, Angèle. "Fonction ventriculaire gauche et pathologies du cœur droit : Intérêt de la cardiométrie électrique." Thesis, Université Paris-Saclay (ComUE), 2019. http://www.theses.fr/2019SACLS301.

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La surcharge ventriculaire droite (VD), volumétrique ou barométrique, est devenue depuis quelques années un problème de santé publique chez les patients atteints de cardiopathie congénitale.Grâce aux progrès de la prise en charge de ces patients, cette population est grandissante avec des complications spécifiques. La défaillance ventriculaire gauche (VG) est une des complications les plus graves des pathologies de surcharge du VD.L’objectif de ce travail est de déterminer s’il existe des signes d’atteinte précoce du VG chez ces patients grâce à l’étude de 2 modèles chirurgicaux de surcharge d

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20

Zhou, Yirong. "Left Ventricular Dynamics and Pulsatile Hemodynamics during Resuscitation of the Fibrillating Heart Using Direct Mechanical Ventricular Actuation." Wright State University / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=wright1547503362869157.

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21

Cameli, Matteo. "Mechanical and histological disturbances in advanced heart failure and cardiac transplantation." Doctoral thesis, Umeå universitet, Kardiologi, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-127295.

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The general purpose of this thesis is to establish capability and accuracy of speckle tracking echocardiography (STE) in assessing left atrial (LA), left ventricular (LV) and right ventricular (RV) function and their correlation with myocardial fibrosis, filling pressure and clinical outcomes in advanced heart failure (HF) patients before and after heart transplantation (HT). I demonstrated that HT recipients had impaired LV twist dynamics in the form of reduced rotation twist angle and untwist rate but time to peak twist was not different from the age matched controls and other cardiac surgic

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22

Jörgensen, Kirsten. "Lung emphysema and cardiac function /." Göteborg : Dept. of Anaesthesiology and Intensive Care Medicine. Institute of Clinical Sciences, The Sahlgrenska Academy at Göteborg University, 2008. http://hdl.handle.net/2077/9635.

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23

Koh, Carline, and 許上冕. "Effects of right ventricular pacing and its interruption on left ventricular torsional mechanics and diastolic function in congenitalheart block." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2010. http://hub.hku.hk/bib/B45167199.

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24

Campbell, Stuart Gaylon. "The role of regulatory light chain phosphorylation in left ventricular function." Diss., [La Jolla] : University of California, San Diego, 2010. http://wwwlib.umi.com/cr/ucsd/fullcit?p3398511.

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Thesis (Ph. D.)--University of California, San Diego, 2010.<br>Title from first page of PDF file (viewed May 5, 2010). Available via ProQuest Digital Dissertations. Vita. Includes bibliographical references.

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25

Nelson, Charles A. L. "Relationship between the transmural distribution of myocardial scar and ventricular function /." [St. Lucia, Qld.], 2004. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe18564.pdf.

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26

Shahgaldi, Kambiz. "Assessment of Left Ventricular Function and Hemodynamics Using Three-dimensional Echocardiography." Doctoral thesis, KTH, Medicinsk teknik, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-12966.

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Left ventricular (LV) volumes and ejection fraction (EF) are important predictors of cardiac morbidity and mortality. LV volumes provide valuable prognostic information which isparticularly useful in the selection of therapy or determination of the optimal time for surgery. Two-dimensional (2D) echocardiography is the most widely used non-invasive method forassessment of cardiac function, 2D echocardiography has however several limitations inmeasuring LV volumes and EF since the formulas for quantifications are based on geometricalassumptions. Three-dimensional (3D) echocardiography has been a

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27

Ericsson, Anders B. "Cardioplegia and cardiac function : evaluated by left ventricular pressure-volume relations /." Stockholm, 2000. http://diss.kib.ki.se/2000/91-628-4138-6/.

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28

Hart, Emma C. J. "The physiological mechanisms underpinning post-exercise reductions in left ventricular function." Thesis, Brunel University, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.443319.

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29

Brookes, Carl I. O. "The evaluation and assessment of right ventricular function using conductance catheters." Thesis, University of Oxford, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.326042.

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30

Patey, Olga. "Perinatal changes in fetal cardiac geometry, myocardial performance and ventricular function." Thesis, St George's, University of London, 2017. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.754075.

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Our findings support the concept that the perinatal period is characterised by profound changes in cardiac geometry, myocardial performance, and ventricular function in normal fetuses and fetuses affected by different pathological conditions such as growth restriction (FGR), gestational diabetes mellitus (GDM), and simple transposition of the great arteries (TGA). The observed changes are most likely explained by cardiac geometrical and functional adaptation in response to significant alterations in volume and resistance load at the end of pregnancy and at birth. Our results provide evidence o

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31

Patel, Neil. "The assessment of right ventricular function in infants with pulmonary hypertension." Thesis, University of Edinburgh, 2010. http://hdl.handle.net/1842/29312.

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Pulmonary hypertension is a cause of significant morbidity and mortality in newborn infants. Right ventricular function, or dysfunction, is an important consequence of pulmonary hypertension and may be an important determinant of disease severity. This work aimed to improve the assessment and management of infants with pulmonary hypertension by: 1. identifying non-invasive measures of right ventricular function in infants 2. determining the mechanisms of right ventricular dysfunction 3. demonstrating the variability of the relationship between RV function and PAP. Five echocardiographic measur

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32

Armour, Sylvia. "The Effects of the Transcription Factor SRY1 on Left Ventricular Function." University of Akron / OhioLINK, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=akron1208193131.

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33

Visser, Lance Charles. "Echocardiographic Assessment of Right Ventricular Systolic Function in Conscious Healthy Dogs." The Ohio State University, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=osu1397419619.

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34

Nishijima, Yoshinori. "Effects of single-site and multi-site ventricular pacing on left and right ventricular mechanics and synchrony is there an optimal pacing sequence? /." Connect to resource, 2005. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1126717344.

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35

Hedberg, Pär. "Left ventricular systolic dysfunction in 75-year-old men and women : a community-based study of prevalence, screening and mitral annulus motion for diagnosis and prognostics /." Uppsala : Acta Universitatis Upsaliensis : Univ.-bibl. [distributör], 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-5793.

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36

Huang, Hsin-Chi. "Cardiovascular magnetic resonance and right ventricular angiography in assessment of right ventricular volumes, function and wall motion abnormalities in arrhythmogenic right ventricular cardiomyopathy: a comparative study." Master's thesis, Faculty of Health Sciences, 2019. https://hdl.handle.net/11427/31643.

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Background: Arrhythmogenic right ventricular cardiomyopathy (ARVC) is an inherited cardiomyopathy characterised by structural changes to mostly the right ventricle (RV) that predisposes to ventricular arrhythmias heart failure and sudden cardiac death. ARVC is diagnosed using the 2010 Task Force Criteria which include RV angiography (RVA) and cardiovascular magnetic resonance (CMR). There has been a dearth of studies to document the comparison of the performance of CMR and RVA, and none undertaken in Africa. The aim of this study was to compare CMR and RVA in the assessment of ARVC in the Sout

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37

Fragata, Claudia da Silva. "Função atrial na miocardiopatia chagásica crônica." Universidade de São Paulo, 2013. http://www.teses.usp.br/teses/disponiveis/5/5131/tde-20052013-113004/.

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INTRODUÇÃO: A doença de Chagas tem patogênese não totalmente conhecida. Ao contrário das funções sistólica e diastólica do ventrículo esquerdo, a função do átrio esquerdo carece de informações. OBJETIVOS: Em portadores de doença de Chagas, com ou sem alterações eletrocardiográficas, com ou sem disfunção sistólica de ventrículo esquerdo, verificar se há diferença nos parâmetros de função atrial esquerda e se há correlação entre dados de função de átrio esquerdo e parâmetros ecodopplercardiográficos de função ventricular sistólica e diastólica de ventrículo esquerdo MÉTODOS: 85 indivíduos: 10 co

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38

Carlsson, Camilla. "Development of a thin, soft, single segment conductance catheter for monitoring left ventricular pressure and volume." Licentiate thesis, KTH, Physics, 2002. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-1441.

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<p>Knowledge of the leftventricular (LV) pressure-volume relation, along withparameters derived from this relation, have led to newpossibilities for the characterisation of cardiac pumpfunction, in both experimental studies and clinicalsettings.</p><p>The pressure-volume diagram is apowerful tool for visualising LV performance, but in order tobe clinically useful it is necessary to make plots continuouslyand on-line. The conductance catheter technique offers thispossibility. The conductance catheter system has experiencedgrowing interest among cardiologists, physiologists, surgeons,and anaesth

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39

Vasconcelos, Milena Miranda. "Evolução da hipertrofia miocárdica associada à gestação em mulheres hipertensas após seis meses do parto." Botucatu, 2019. http://hdl.handle.net/11449/182458.

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Orientador: Silméia Garcia Zanati Silméia Garcia Bazan<br>Resumo: Fundamento: A hipertensão arterial sistêmica (HAS) é um dos principais fatores de risco para o desenvolvimento de doença cardiovascular. Quando a mulher hipertensa engravida, ocorre uma nova condição hemodinâmica, com adição da situação de sobrecarga crônica de pressão à situação de sobrecarga crônica de volume. Essa nova condição hemodinâmica pode propiciar maior hipertrofia miocárdica (HVE), sendo que sua evolução após o parto ainda é pouco estudada na literatura. Suspeita-se que as mulheres hipertensas que apresentaram HVE du

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40

Gustafsson, Ulf. "Ventricular rotation and the rotation axis : a new concept in cardiac function." Doctoral thesis, Umeå universitet, Medicin, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-37187.

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Background: The twisting motion of the left ventricle (LV), with clockwise rotation at the base and counter clockwise rotation at the apex during systole, is a vital part of LV function. Even though LV rotation has been studied for decades, the rotation pattern has not been described in detail. By the introduction of speckle tracking echocardiography measuring rotation has become easy of access. However, the axis around which the LV rotates has never before been assessed. The aims of this thesis were to describe the rotation pattern of the LV in detail (study I), to assess RV apical rotation (

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41

Borges, Maria Candida Calzada. "Redução da função sistolica e diastolica do ventriculo esquerdo, estimada pela velocidade do anel mitral, em pacientes hipertensos com e sem hipertrofia ventricular." [s.n.], 2006. http://repositorio.unicamp.br/jspui/handle/REPOSIP/310233.

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Orientador: Kleber Gomes Franchini<br>Tese (doutorado) - Universidade Estadual de Campinas, Faculdade de Ciencias Medicas<br>Made available in DSpace on 2018-08-07T12:07:47Z (GMT). No. of bitstreams: 1 Borges_MariaCandidaCalzada_D.pdf: 3690302 bytes, checksum: 0c73a392de92a2836881cbe3034c49f5 (MD5) Previous issue date: 2006<br>Resumo: Estudos epidemiológicos têm estabelecido uma relação contínua entre a massa do ventrículo esquerdo (VE) e o risco cardiovascular na população geral e na população hipertensa. O pior prognóstico de pacientes hipertensos com aumento na massa do VE tem sido, em pa

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42

Man, Bik-ling. "Plasma brain natriuretic peptide and systemic ventricular function after the Fontan procedure /." View the Table of Contents & Abstract, 2005. http://sunzi.lib.hku.hk/hkuto/record/B34865822.

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Ärnlöv, Johan. "Left Ventricular Function in Elderly Men : Metabolic, Hormonal, Genetic and Prognostic Implications." Doctoral thesis, Uppsala University, Department of Public Health and Caring Sciences, 2002. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-2937.

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<p>Heart failure and left ventricular dysfunction are major causes of morbidity and mortality. In this thesis, metabolic, hormonal, genetic and prognostic aspects of echocardiographically determined left ventricular function were investigated in a fairly large longitudinal population-based study of men. The participants were examined both at age 50 and 70 years and were followed for mortality using the national cause-of-death registry.</p><p>Several factors associated with the insulin resistance syndrome predicted left ventricular systolic dysfunction independent of myocardial infarction, hype

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44

Calcutteea, Avin. "New insights in the assessment of right ventricular function : an echocardiographic study." Doctoral thesis, Umeå universitet, Medicin, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-66725.

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Background: The right ventricle (RV) is multi-compartmental in orientation with a complex structural geometry. However, assessment of this part of the heart has remained an elusive clinical challenge. As a matter of fact, its importance has been underestimated in the past, especially its role as a determinant of cardiac symptoms, exercise capacity in chronic heart failure and survival in patients with valvular disease of the left heart. Evidence also exists that pulmonary hypertension (PH) affects primarily the right ventricular function. On the other hand, previous literature suggested that

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45

Man, Bik-ling, and 文碧玲. "Plasma brain natriuretic peptide and systemic ventricular function after the Fontan procedure." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2005. http://hub.hku.hk/bib/B45010365.

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46

Neary, Paul. "Studies of sarcoplasmic reticulum function in rabbit and human left ventricular dysfunction." Thesis, University of Glasgow, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.300737.

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47

Cheesman, M. G. "Right ventricular function in paced patients : a study using pulsed Doppler ultrasound." Thesis, University of Leicester, 1991. http://hdl.handle.net/2381/34299.

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There is increasing interest in right ventricular function as an important determinant of cardiac output. However, the chamber is difficult to study, because of its shape and relationship to the left ventricle. Invasive studies, radionuclide studies and two-dimensional echocardiography are all useful approaches, but all have serious limitations. Systolic time intervals, best measured by pulsed Doppler ultrasound in the proximal pulmonary artery, offer one method of assessing right ventricular systolic function. Previous "normal" ranges, however, could be criticised on many counts. I present da

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48

Young, Lesley Elissa. "Measurement of left ventricular function in anaesthetised horses using transoesophageal Doppler echocardiography." Thesis, University of Edinburgh, 1996. http://hdl.handle.net/1842/30053.

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Studies were undertaken using transoesophageal Doppler echocardiography to monitor left ventricular systolic function in anaesthetised horses. A 3.5 MHz transoesophageal probe was specifically developed in collaboration with Vingmed Sound for equine use. The indices of systolic function investigated were maximum acceleration of aortic blood flow (dv/dt<SUB>max</SUB>), maximum blood flow velocity, (V<SUB>max</SUB>), cardiac output (CO), left ventricular pre-ejection period (PEP) and left ventricular ejection time (ET). The feasibility of the technique was demonstrated in a group of 8 healthy Th

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49

Bilal, Dejan. "Evaluation of systolic and diastolic left ventricular function during exercise in athletes." Thesis, Malmö universitet, Fakulteten för hälsa och samhälle (HS), 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:mau:diva-25669.

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Idrottshjärta är ett kardiovaskulärt tillstånd som uppträder under längre perioder av intensiv träning som orsakar strukturella, funktionella och elektriska förändringar hos hjärtat och är en fysiologisk anpassning som svar på ett ökat hemodynamiskt behov under fysisk ansträngning. De fysiologiska anpassningarna har dock blivit ett diagnostiskt dilemma att urskilja från de patologiska förändringarna såsom hypertrofisk kardiomyopati. Det finns därför ett behov av standardisering av kardiovaskulär screening hos idrottare för att upptäcka underliggande eller dolda kardiomyopatier som kan leda til

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50

Dawes, Timothy. "The anthropometric, environmental and genetic determinants of right ventricular structure and function." Thesis, Imperial College London, 2015. http://hdl.handle.net/10044/1/30634.

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Abstract:

Background: Measures of right ventricular (RV) structure and function have significant prognostic value. The right ventricle is currently assessed by global measures, or point surrogates, which are insensitive to regional and directional changes. We aim to create a high-resolution three-dimensional RV model to improve understanding of its structural and functional determinants. These may be particularly of interest in pulmonary hypertension (PH), a condition in which RV function and outcome are strongly linked. PURPOSE To investigate the feasibility and additional benefit of applying three-dim

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