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.
Results
Showing 1 to 20 of 214 for “"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 and …
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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
… 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 highly …
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Modeling of Spiral Waves Arising in Atrial Fibrillation
… 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. This study …
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Ventricular fibrillation and fluctuations in the T-wave
Thesis (B.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1984.
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Hemodynamic and biochemical characteristics of patients with atrial fibrillation and anticoagulation of ≥65-year-old patients with atrial fibrillation in Estonia
Kodade virvendusarütmia (KVA) on sagedaseim rütmihäire maailmas, esinedes 2-4% täiskasvanud elanikest. Rütmihäire põhjustab patsiendi olulist elukvaliteedi häirumist ja suurendab kuni 5 korda ajuinsuldi riski. Teada on mitmeid selle rütmihäire riskifaktorid nagu hüpertensioon, diabeet ja uneapnoe …
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Atrial fibrillation – on its trigger mechanisms, risks and consequences
Background: Atrial fibrillation (AF) frequently impairs quality of life, but in long-term it is associated with an increased morbidity and mortality. Persistent AF may cause changes in the sinus node function, and if converted to sinus rhythm (SR), there is a substantial risk of recurrence of AF. …
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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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The interrelationship between central sleep apnea and atrial fibrillation
… 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 underlying this …
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Role of external fibrillation in pulp and paper properties
… this thesis was to clarify the role of external fibrillation in pulp and paper properties. If the degree of external fibrillation could be controlled and the role of external fibrillation were known, this would provide better possibilities for utilizing the full potential of fibrous material. …
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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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Novel ECG analysis with application to atrial fibrillation detection
… 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 Perceptron …
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COMPUTATIONAL MODELLING OF PROTEIN FIBRILLATION WITH APPLICATION TO GLUCAGON
A computational method to model the steric zipper of amyloid fibrils (FibPreditor) is developed. The method generates an ensemble of structures for the steric zipper by a number of geometric operations and presents the most energetically favorable candidates as models of steric zipper. The method …
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The development and analysis of a ventricular fibrillation detector
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1986.
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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
… 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 techniques. …
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