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 143 for “"Atrial fibrillation"”.
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Pharmacological Interventions in Atrial Fibrillation
Atrial fibrillation arises when abnormal electrical signals suddenly initiate within the atria, taking precedence over the heart's natural pacemaker, which can no longer regulate the heart's rhyth. This leads to irregular and often excessively fast contractions of the atrial heart muscle cells, …
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ATRIAL FIBRILLATION MANAGEMENT IN HISPANIC ADULTS
… </strong>Research has found atrial fibrillation (AF) to be the primary or a contributing cause of death on 183,321 death certificates, and an underlying cause of death for 26,535 Americans in 2019. Findings indicate an increased AF diagnosis in White people compared to racial …
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Population-based prediction of atrial fibrillation
Background: Atrial fibrillation (AF) is the most common sustained cardiac arrhythmia and increases in prevalence. As AF confers increased risk of morbidity, stroke, dementia and mortality, a major objective of cardiovascular epidemiology today is the development of tools for prediction and …
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A mathematical model for atrial fibrillation
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1983.
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Exosome Prevention of Post Operative Atrial Fibrillation
… recovering from open chest surgery experience atrial fibrillation (AF) that results principally from inflammation in the pericardial space surrounding the heart. Given that post-operative AF is associated with increased mortality, effective measures to prevent AF after open-chest surgery are …
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Modeling of Spiral Waves Arising in Atrial Fibrillation
… of this study is to model spirals arising in atrial fibrillation. Spiral wave fronts, known to cardiologists as cardiac rotors, are responsible for heart arrhythmias. The modeling of the path of the spiral will ultimately assist in understanding why arrhythmias occur and how to treat them. …
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Mechanism of Atrial Fibrillation in Lamin A/C Cardiomyopathy
Atrial fibrillation (AF) is a common arrhythmia with a complex genetic basis, yet the molecular mechanisms linking rare and common variants remain unclear. Polygenic risk score (PRS) assessment in the UK Biobank and All of Us cohorts shows that the risk of incident AF in carriers of …
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ATRIAL COMPLEX NETWORKS IN ENDOCAVITARY RECORDINGS DURING ATRIAL FIBRILLATION
L'incidenza e la prevalenza delle malattie atriali, in particolare della fibrillazione atriale (FA), stanno raggiungendo oggi proporzioni pandemiche. Nonostante i notevoli sforzi di ricerca e i progressi compiuti nella comprensione dei meccanismi alla base della FA, la capacità di trattarla rimane …
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Novel ECG analysis with application to atrial fibrillation detection
… to identify the signal whether it belongs to Atrial Fibrillation (AF) or vice-versa.The extracted features are used as the input vectors to the classifier.;Two novel classifiers are designed which are the Cascade Hybrid Multilayer Perceptron (CHMLP) and the Multi-Classify Hybrid Multilayer …
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The interrelationship between central sleep apnea and atrial fibrillation
… that sleep apnea is strongly associated with atrial fibrillation, with several lines of evidence demonstrating that this relationship is bidirectional and that each condition predisposes to and/or exacerbates the other. Many studies have suggested potential pathophysiologic mechanisms …
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Mapping the Characteristics of Atrial Activation Patterns During Atrial Fibrillation
Atrial fibrillation (AF) is the most common tachyarrhythmia in the Western world. In our laboratory, mechanisms of AF have been characterized using simultaneous multisite mapping (512 recording sites) in the canine sterile pericarditis model and in AF patients. Studies of AF in the canine sterile …
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Novel risk factors for atrial fibrillation in an urban population
Atrial fibrillation (AF) is the most common sustained cardiac arrhythmia in the general population, and a major cause of morbidity and mortality. Low-grade inflammation, erythrocyte volume variation, and subclinical atherosclerosis have repeatedly been associated with cardiovascular disease, but it …
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Left Atrial Posterior Wall Isolation in the Treatment of Atrial Fibrillation
… optimal approach for the ablation of persistent atrial fibrillation is undefined. Left atrial posterior wall isolation (LAPWI) is a promising lesion set, based on techniques for surgical AF ablation. The left atrial posterior wall can be isolated via catheter, surgical or hybrid ablation …
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Four-Dimensional Cardiac Magnetic Resonance Analysis in Patients with Atrial Fibrillation
Atrial fibrillation (AF) is a common cardiac arrhythmia characterized by disorganized electrical activity leading to irregular contractions and impaired cardiac output. AF significantly elevates the risk of thromboembolic stroke, primarily due to thrombus formation in the left atrium (LA) and left …
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Delivering a Screening Programme for Atrial Fibrillation: a mixed methods investigation
Introduction Atrial fibrillation (AF) is an irregular rhythm of the heart that is associated with 30% of strokes. Substantial undiagnosed AF might be detectable by hand-held ECG devices, and treatment with anticoagulation might reduce the risk of stroke. For an AF screening programme to be endorsed …
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P-wave electrical alternans as an indicator of paroxysmal atrial fibrillation
… wave in an electrocardiogram corresponding to atrial depolarization. In this investigation, software to measure p-wave alternans was developed and then tested on simulated data and on real data previously recorded from human subjects. The software consists of C programs managed by shell scripts …
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Exploring alternans characteristics of electrocardiogram for prediction of Paroxysmal Atrial Fibrillation
… can be used to detect and predict Paroxysmal Atrial Fibrillation (PAF) from an Electrocardiogram (ECG). The work involved implementing an algorithm for computing alternans information for a region of ECG, applying the algorithm to derive P-wave and PQ segment alternans information, and …
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Pursuing Improved Quality of Life In the Atrial Fibrillation Population: Evidence-Based Practice
<p>Atrial fibrillation (AF) is a chronic illness that can diminish the quality of life (QoL) of community dwelling older adults. This can be due to associated symptoms, side effects from treatment, changes in functional capacity, and disruption in role performance. Current AF management guidelines …
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