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 35 for “"Cardiac Arrhythmia"”.
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The design and evaluation of a bedside cardiac arrhythmia monitor
Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1981.
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Application of signal analysis techniques to cardiac arrhythmia detection and classification.
Thesis. 1976. M.S.--Massachusetts Institute of Technology. Dept. of Aeronautics and Astronautics.
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Signal Processing for Early Warning Arrhythmia Detection and Survival Prediction for Clinical Decision
… and more than 30,000 people a year suffer cardiac arrest out-of-hospital. As people all over the world, continue to live busy and stressful lives, a vast majority of people start showing cardiac arrhythmia-related symptoms which, if not treated in time may lead to a serious heart condition …
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Interplay between Ephaptic and Gap Junctional Coupling in Cardiac Conduction
Sudden cardiac death occurs due to aberrations in the multifactorial process that is cardiac conduction. Conduction velocity (CV) and its modulation by several determinants, like cellular excitability, tissue structure and electrical coupling by gap junctions (GJ), have been extensively studied. …
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A case control study to identify and explore associations with sudden death and medications that can prolong the QT interval on the electrocardiograph.
… with an increased risk of sudden death from cardiac arrhythmia. Methods: A community based, matched case control study used post mortem and primary care datasets. Cause of death was most likely due to cardiac arrhythmia. 789 cases were matched to 2357 controls for age, sex and cardiovascular …
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Comparison of Apixaban and left atrial appendage exclusion device (Watchman) in preventing stroke and systemic embolism in atrial fibrillation patients
<p>Atrial fibrillation is a cardiac arrhythmia associated with increased risk of stroke and systemic embolism. Apixaban, an oral anticoagulant, and the Watchman, a left atrial appendage closure device, are the currently used therapeutic treatments for the prevention of stroke and systemic embolism …
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Examining The Role Of Lysyl Oxidase Enzymes In Atrial Fibrillation Induced By Volume Overload
Atrial fibrillation (AF), the most prevalent cardiac arrhythmia, is linked to atrial electrical and structural remodelling. AF is associated with fibrosis; however, in models imposing atrial stretch, this occurs without changes in collagen transcription, suggesting fibrosis results from collagen …
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Computerized cardiac mapping system.
… the results of the work on a computerized cardiac mapping system for recording simultaneously the signals from three electrodes placed at different sites on the heart in order to diagnose the sites causing arrhythmias. The signals are buffered, amplified, filtered and transferred to a …
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A Stochastic Simulation Model of Alarm Response Strategies on a Telemetry Floor
… the routine processes involved in responding to cardiac arrhythmia alarms on a telemetry unit as well as the sources of noise attributing to alarm fatigue. By quantifying these workflows and response strategies, this model can be utilized to aid administrators and managers in selecting alarm …
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Modeling the Impact of Heart Rate Variability on Blood Pressure in Simulated Atrial Fibrillation Using the BioGears Physiology Engine
… fibrillation (AF), the most common sustained cardiac arrhythmia, is characterized by chaotic atrial activation and irregular ventricular response. While its electrophysiologic mechanisms are well studied, the systemic consequences of rhythm irregularity, particularly its impact on blood …
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Atrial Arrhythmogenic Substrates: The Role of Structure and Molecular Remodeling
Atrial tachyarrhythmias, specifically atrial flutter: AFl) and fibrillation: AF), affect over 2.2 million Americans, leading to more hospitalizations than any other cardiac arrhythmia. These arrhythmias are defined by the presence of reentrant circuits of excitation leading to high atrial rates and …
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Mutations in Connexin43 and Connexin40 Associated with Human Atrial Fibrillation; Physiology and Mechanism
… Fibrillation (AF), the most common sustained cardiac arrhythmia, is a disease that affects the electrical conductance in the atria. Gap junction channels, composed of connexin (Cx) proteins, allow the electrical signal to propagate between cardiac myocytes. Mutations in two highly expressed …
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Metabolomica: un nuovo approccio per lo studio della predittività di farmacoresistenza e di complicanze cardiovascolari in epilessia
… but most research has focused on seizure related cardiac arrhythmia. No evidence-based intervention to prevent SUDEP exists. Biological basis of DR are still unclear and applying innovative diagnostic techniques for prediction of outcome in the pharmacotherapy of epilepsy is a mission with …
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Chemical Biology Tools for Biochemical and Functional Analysis of Myosin Phosphatase
Atrial fibrillation (AF) is a common cardiac arrhythmia characterized by irregular electrical impulses and impaired atrial contraction. This mechanical dysfunction contributes to blood stasis and increases the risk of thrombus formation, even after restoration of normal rhythm. Emerging evidence …
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Exploration of Supraventricular Conduction with respect to Atrial Fibrillation. Methodological Aspects on Selected Techniques
Atrial fibrillation is the most common cardiac arrhythmia that demands medical attention. Computer-based detailed analysis of cardiac electrical signals from healthy subjects and patients with a history of atrial fibrillation has become an important tool in the further clarification of this …
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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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An energy-efficient hardware system for robust and reliable heart rate monitoring
Cardiac arrhythmia, one of the most common causes of death in the world today, is not always effectively detected by regular examinations, as it usually occurs infrequently and suddenly. Therefore, real-time, continuous monitoring of the heart rate is needed to detect arrhythmia problems sooner and …
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The Ultrastructural and Abnormal Calcium Handling in Pulmonary Vein Sleeve Cells, Atrial and Ventricular Myocytes During Ageing
… fibrillation (AF) is the most common sustained cardiac arrhythmia, with age being a significant risk factor. It is well established now that electric activities originating from pulmonary vein sleeve cells (PVCs) initiate AF. Factors that are involved in maintaining AF include structural …
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Novel risk factors for atrial fibrillation in an urban population
… 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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Mapping Ligand Binding Sites in hERG1 Channel with Biomolecular Simulations
… cause QT interval prolongation. The consequent cardiac arrhythmia, known as acquired long QT syndrome, has led to the withdrawal of several approved drugs and a mandatory preclinical stage safety assessment for hERG1 blockade. However, cardiotoxicity detection due to the hERG1 blockade remains a …
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