Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 86 for “"echocardiographic"”.
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Echocardiographic Investigation of Canine Myxomatous Mitral Valvular Disease
Objectives: To further characterize the echocardiographic anatomy of the canine mitral valve in healthy dogs and those affected by myxomatous mitral valve disease (MMVD), and to compare the level of agreement between two methods of assessment of left atrial size in identification of left atrial …
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Echocardiographic evaluation of horses challenged with African horse sickness virus
… (AHSV) as part of a vaccine trial to describe echocardiographic changes during the course of the disease. Echocardiography was performed once prior to infection, and daily from infection to humane euthanasia of each subject. Both objective and subjective (eFoCUS) evaluations of all appropriate …
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Advanced Echocardiographic Imaging In Dogs With Myxomatous Mitral Valve Disease
… presented in this dissertation, we used advanced echocardiographic techniques to elucidate several aspects of MMVD in dogs. Our hypothesis was that the mitral valve (MV) morphology could have a role in the development of MMVD. First, we tested whether we could use real time three-dimensional …
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Usefulness of Echocardiographic Epicardial Adipose Tissue Assessment in Patients with Angina
OBJECTIVE: We studied the relationship of echocardiographic epicardial adipose tissue (EAT) to coronary artery disease (CAD) risk factors, including the metabolic syndrome (MS), and the extent of coronary atherosclerosis. BACKGROUND: The clinical significance of EAT for CAD, which has been observed …
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Echocardiographic Assessment of the Canine Right Heart: Reference Intervals and Repeatability
Objectives: Phase 1) Establish echocardiographic reference intervals for measurements of the normal canine right heart. Phase 2) Describe the repeatability of normal right heart echocardiographic measurements. Phase 3) Describe the repeatability of right heart echocardiographic measurements which …
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Full 3D Blood Velocity Mapping and Flow Quantification from Doppler Echocardiographic Images
This thesis contributes to knowledge by describing two novel methods to calculate<br/>3D blood velocity and flow within the heart using 3D colour Doppler images. The<br/>principal goal of both methods was to overcome the main limitation of Doppler<br/>systems which is that the Doppler effect only …
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Echocardiographic Evaluation of Left Ventricular Recovery After Refractory Out-of-Hospital Cardiac Arrest
… that survived. Results: 77 patients had >1 echocardiographic turndown evaluations. Thirty-eight patients survived to discharge and 39 patients died. Of 39 in-hospital deaths, 17 patients died before VA-ECMO decannulation and 22 patients died after VA-ECMO decannulation. Among all patients, …
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Reproducibility and sensitivity of Doppler echocardiographic indices of left ventricular function during exercise
… indicates that continuous wave Doppler echocardiographic estimates of LVF are reproducible (r=0.40-0.81) and reflect changes in myocardial contractility induced by acute beta-blockade.
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Feasibility of Echocardiographic Particle Image Velocimetry for evaluation of cardiac left ventricular filling function
Heart disease is one of the primary causes of morbidity and mortality for the adult population over the age of 65. Furthermore, ailments such as hypertension can affect as many as 50% of the adult population over the age of 45. If left untreated, these ailments eventually precipitate the onset of …
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The clinical, electrocardiographic and echocardiographic features and long-term outcome of patients with Tachycardia-induced cardiomyopathy
Tachycardia-induced cardiomyopathy (TIC) is a reversible cause of LV systolic dysfunction that can complicate any supraventricular or ventricular tachyarrhythmia. This study is the first to compare features of pure and impure TIC. We found that impure TIC may develop more quickly than pure TIC, as …
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Reference intervals for the echocardiographic measurements of the right heart in African school children and adolescents
… pulmonary embolism, and RV infarction, the echocardiographic evaluation of the right heart plays a critical role in the diagnosis and management of congenital heart diseases where the RV often serves as the main pumping chamber...
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Effect of anthropometric factors on the reproducibility of Doppler echocardiographic measurements during stationary bicycle exercise in healthy males
… reproducibility of continuous wave (CW) Doppler echocardiographic recordings in exercise were studied in 42 healthy males between 18 and 43 years of age. Each subject was measured and rank ordered in reference to four anthropometric Indices: sum of 3 skinfolds (SK); chest girth-waist girth ratio …
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Optimizing pharmacodynamics and evaluating echocardiographic effects of alfaxalone sedation in bearded dragons (Pogona vitticeps) and prairie rattlesnakes (Crotalus viridis)
… administration. End systolic volume was the only echocardiographic parameter that significantly increased in bearded dragons indicating a decrease in cardiac contractility secondary to sedation. Prairie rattlesnake echocardiographic values were not affected. Administration of alfaxalone at 15 …
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Evaluation of right ventricular function using conventional and real-time 3-dimensional echocardiography in normal dogs and dogs with myxomatous mitral valve disease
… feasibility of real-time three-dimensional (3D) echocardiographic analysis of right ventricular (RV) function in healthy dogs and to compare conventional and 3D echocardiographic (3DE) indices of RV function in dogs with various stages of myxomatous mitral valve disease (MMVD), classified per the …
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Association Between New Bronchopulmonary Dysplasia and Pulmonary Hypertension in Extremely Premature Newborns
… (BPD-PH), and a discussion of BPD-PH as a whole. Echocardiographic techniques to detect the early presence of BPD-PH are discussed, and a practical demonstration of the signifiance of these echocardiographic values is provided for 4 patients from the department of Pediatrics at the University of …
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Hanging-Associated Left Ventricular Systolic Dysfunction
… The aim of this study was to evaluate the echocardiographic findings in patients with hanging injury. METHODS: We enrolled 25 patients (9 males, 33 ± 15 year-old) with hanging injury who performed echocardiography within 2 weeks after admission. Clinical, demographic and laboratory data and …
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Plasma N-terminal Proatrial Natriuretic Peptide Concentration in Cats with Hypertrophic Cardiomyopathy
… the relationship between [Nt-proANP] and echocardiographic variables. Methods: Venous blood samples were obtained from seventeen cats with HCM and from nineteen healthy cats. Plasma [Nt-proANP] was determined using an ELISA assay. The relationship between plasma [Nt-proANP] and M-mode, …
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Optimisation of Surgical Timing in Rheumatic Mitral Valve Disease
… focuses on surgical delays, screening, and echocardiographic predictors as methods to reduce long-term risk in patients with rheumatic heart disease and optimise timing of tertiary intervention. Chapter 1 reviews the current management of rheumatic heart disease and the pitfalls of existing …
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Predicting Aortic Stenosis Severity using Deep Learning
… and evaluate the aortic valve. Interpretation of echocardiographic images currently requires expert evaluation by a cardiologist trained in the analysis of cardiac ultrasound. Our hypothesis is that deep learning can be used to learn structures within echocardiographic images, yielding …
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Detecting subclinical anthracycline therapy related cardiac dysfunction in low income country (SATRACD study)
… subclinical ATRCD, assess the accuracy of simple echocardiographic parameters on detecting subclinical ATRCD and investigate the lipoprotein subfractions change after anthracycline therapy. Methods and results: Two hundred seven cancer patients who were scheduled for anthracycline based …
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