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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 129 for “"ejection fraction"”.
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The pathophysiology of heart failure with preserved ejection fraction
Our studies demonstrate that patients with HfpEF have impaired myocardial energetics as indicated by the diminished in vivo myocardial PCr/ATP ratio. Data acquired during semi-supine cycling exercise indicates that patients with HfpEF had a dynamic impairment of LV active relaxation. In addition, …
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Comparison of estimates of left ventricular ejection fraction using gated blood imagining
Serial measurement of left ventricular ejection fraction (L VEF) using GBP imaging is an established technique for monitoring L VEF in patients undergoing chemotherapy with cardio-toxic medication and in patients after heart transplants. Oncologists at our institution decide that cardio-toxic …
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Exploring the role of Wnt signalling in heart failure with preserved ejection fraction.
… registry, heart failure with preserved ejection fraction (HFpEF) accounts for approximately 16% of heart failure cases, with survival rates failing to improve due to the lack of effective treatments and the increasing prevalence of co-morbidities. It has been widely documented throughout …
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Investigation and analysis of heart failure with preserved ejection fraction (HFpEF) with Magnetic resonance
Heart Failure with preserved Ejection fraction (HFpEF) is a cardiovascular condition which is steadily on the rise. It is a major affliction in the elderly with higher incident rates in females and the obese. Exercise intolerance even to submaximal exercise is the cardinal symptom of this disease. …
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Chronotropic Incompetence in Patients with Heart Failure and a Preserved Ejection Fraction: Prevalence and Impact on Exercise Tolerance
BACKGROUND: An appropriate heart rate (HR) response to exercise is important, as it represents a key determinant of oxygen consumption (VO2). Furthermore the inability of HR to increase sufficiently, chronotropic incompetence (CI), has important functional and prognostic implications in heart …
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The prevalence, profile, and prognosis of heart failure with preserved ejection fraction: A South African tertiary hospital experience
… is limited data on heart failure with preserved ejection fraction (HFpEF) in Sub-Saharan Africa. We therefore aimed to describe the prevalence, profile and outcomes of HFpEF patients admitted to a South African tertiary hospital. Methods. We retrospectively reviewed all consecutive de novo heart …
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Investigating the impact of non-alcoholic fatty liver disease on the pathogenesis and progression of heart failure with preserved ejection fraction
Heart failure with preserved ejection fraction (HFpEF) is a growing public health concern due to its increasing incidence alongside a lack of effective therapeutics. Understanding how this condition develops is therefore of the utmost importance in order to develop preventative strategies. As such, …
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Outcomes of patients with hypertensive heart disease and heart failure with reduced ejection fraction (HFrEF) at a tertiary centre in South Africa
… diagnosed with HF with reduced and mid-range ejection fraction (HFrEF and HFmrEF) secondary to HHD, seen at the Cardiomyopathy Clinic at Groote Schuur Hospital over a threeyear period. Ethics approval was obtained (HREC REF 677/2018). Results. A total of 59 patients were included, with an …
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PRESERVE HFpEF: Designing a blended lifestyle intervention to improve physical function, dietary intake, and quality of life in multi-morbid older people who have Heart Failure with preserved Ejection Fraction (HFpEF)
Background Heart Failure with preserved Ejection Fraction (HFpEF), a type of heart failure, has been described as a ‘stealth syndrome’ and ‘the greatest unmet need in cardiology.’ These labels have arisen because of the increasing number of people receiving a diagnosis and the growing body of …
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Die Beurteilung von Veränderungen der myokardialen Perfusion nach PTCA bei akutem Myokardinfarkt durch wiederholte Bestimmung des Myocardial Blush Grade
… of ST-segment elevation, TIMI frame count and LV ejection fraction. The myocardial perfusion (MBG) at follow up was persistently abnormal in 19 patients (20%), improved from previously abnormal to normal in 30 patients (31%), remained normal in 40 patients (42%), and deteriorated from normal to …
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A Pilot Study: Observations of Patients Participating in Heart Failure Shared Medical Appointments while Receiveing Nutrition Education
… in this group had a diagnosis of HF with reduced ejection fraction (HFrEF), and two patients had a diagnosis of HF with preserved ejection fraction (HFpEF). Average weights of the participants ranged from 171.4 lbs to 339.6lbs. Quality of life (QOL) for this group of patients was diverse, average …
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OBJECTIVELY MEASURED PHYSICAL ACTIVITY LEVELS AND THEIR RELATIONSHIP TO PHYSICAL FITNESS/FUNCTION IN HEART FAILURE PATIENTS
… (PA) in those with heart failure and a preserved ejection fraction (HFpEF), examine the relationship of PA levels to other physical fitness/functional measures, and determine if there are significant differences between objectively measured PA levels and well-established prognostic measures in …
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FUNCTIONAL, STRUCTURAL, CELLULAR, AND MOLECULAR CARDIAC RESPONSES IN NONHUMAN PRIMATE MODELS OF MENOPAUSE AND RADIATION EXPOSURE
… particularly heart failure with preserved ejection fraction (HFpEF). Myocardial fibrosis appears to be a shared pathologic feature of both conditions, but the underlying mechanism(s) and end stage results on cardiac function are currently unclear.
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Širdies magnetinio rezonanso tomografijos vertė, prognozuojant kairiojo skilvelio miokardo kontrakcijos atsistatymą po revaskuliarizacijos /
… the significant improvement of left ventricular ejection fraction were found: the percentage of viable segments from all dysfunctional and revascularised segments in a patient and the absolute value of left ventricular ejection fraction measured during low dose dobutamine administration. On the …
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Effekt einer transendokardialen kathetergestützten Applikation von Stromal cell derived factor 1[alpha] auf die linksventrikuläre Funktion im Herzinfarktmodell im Schwein
… performed to analyse left ventricular function (Ejection fraction, stroke volume, unipolar voltage, linear local shortening). Furthermore infarct size was determined by tetrazolium staining. Vessel density and myocardial remodelling were acquired by immunofluorescence staining. Immunofluorescence …
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Cardiac Co-morbidities in Chronic Obstructive Pulmonary Disease
… body mass index(BMI), lower left ventricular ejection fraction, lower forced expiratory volume in one second(FEV1), and lower hemoglobin level were independently associated with higher mortality in total COPD group (p<0.05), whereas presence of CAD was not. CONCLUSION: Our study identified …
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Deep Learning Approach for the Automated Characterization of Cardiac Mechanics
… the blood pumping function of the heart. Ejection fraction is the usual index of function, yet mechanical impairment and even heart failure may occur without changes in this measure. Strain analysis provides more meaningful measures through non-invasive evaluation of myocardial deformation …
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EFFECTS OF DAPAGLIFLOZIN ON EXERCISE CAPACITY, RESPIRATORY FUNCTION, BIOMARKERS, SLEEP APNEA, AND LEFT VENTRICULAR REMODELING IN PATIENTS WITH HEART FAILURE: A PROSPECTIVE, SINGLE CENTER, NON RANDOMIZED STUDY
… in the management of heart failure with reduced ejection fraction (HFrEF). Its clinical efficacy is well-established, primarily attributed to its effects on diuresis and hemodynamic unloading. However, despite its widespread use and therapeutic success, the precise mechanisms through which …
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Beta-blocker therapy in the era of primary percutaneous intervention for ST elevation myocardial infarction
… group had lower Killip class, higher ejection fraction, younger ages, more male gender, statin use, hypertension, obesity, use of drug eluting stent and left anterior descending artery infarct. Cumulative incidence of all-cause death was 10.0% (60 patients) in beta-blocker group during …
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