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 39 for “"Cardiac arrhythmias"”.
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Cardiac Arrhythmias following total Pneumonectomy
<p>[Abstract Not Included]</p> <p>[No Advisor Signatures]</p>
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Programmable stimulator system for study of cardiac arrhythmias
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1993.
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A novel technique for guiding ablative therapy of cardiac arrhythmias
Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Nuclear Engineering, 1999.
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A device user interface for the guided ablative therapy of cardiac arrhythmias
Radio Frequency Ablation (RFA) of cardiac arrhythmias involves the guidance of an ablation catheter to the site of the arrhythmia and the administration of a high-intensity radio-frequency current to the tissue. The current technique used to locate the arrhythmic site suffers from a number of …
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Synchronised capacitor discharge in the management of cardiac arrhythmias with particular reference to the haemodynamic significance of atrial systole
In December 1962 a boy of 15 years was referred to the National Heart Hospital because of a ventricular tachycardia, which had proved resistant to treatment with procaine amide, quinidine, atropine, prostigmine, prednisone and digoxin. A second stage, total correction for tetralogy of Pallot had …
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Exercise-Associated Cardiac Rhythm Disorders in Thoroughbred Racehorses
Cardiac arrhythmias negatively impact horseracing through concerns for horse and jockey safety and welfare. The most clinically relevant rhythm disorders in Thoroughbred racehorses (TBs) are atrial fibrillation (AF), which typically causes poor performance, and fatal arrhythmias which precipitate …
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An immunohistochemical assessment of endomyocardial biopsy specimens from the South African arrhythmogenic right ventricular cardiomyopathy registry
… the right ventricular myocardium, resulting in cardiac arrhythmias and sudden death. Part of the diagnostic work up for these patients includes a biopsy of the endocardium which has historically been difficult to interpret and of limited value in the early stages of disease. This study will …
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A Multi-Processor System for the Detection of Electrocardiogram Arrhythmias
… microprocessor system for the diagnosis of cardiac arrhythmias. The distributed microprocessor approach developed allowed the allocation of a microprocessor to each patient for the purpose of electrocardiogram analysis. The functions performed by these patient-dedicated processors include …
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Study of the Kalman filter for arrhythmia detection with intracardiac electrograms
… pacing. The schemes for detecting cardiac arrhythmias often realize nonpathologic tachycardia as serious arrhythmias and deliver false shocks. In this study, an arrhythmia classification technique has been developed with the use of Kalman filter applied on cyclostationary …
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Febrile Temperature Facilitates Degradation of Human Ether-a-Go-Go-Related Gene (hERG) Channels
… (IKr), which plays an essential role in human cardiac repolarization. Dysfunction of hERG caused by genetic mutations or drug-mediated effects can lead to long QT syndrome (LQTS), predisposing affected individuals to cardiac arrhythmias, syncope, and sudden death. Recently, studies have …
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Sleep and Cardiac Tachyarrhythmia: Results from the Cross-Sectional Sleep Heart Health Study
… quality at pre-clinical levels in patients with cardiac arrhythmias (CA). Patients with CA have at a greatly elevated risk of stroke, sudden cardiac death, disability, and reduced quality of life. In this study, we therefore sought to elucidate the sleep-related predictors of arrhythmia by …
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Market Analysis of Cardiac Electrical Mapping Platform in the Cardiac Resynchronization Therapy Market
This thesis will provide a market analysis for a cardiac electrical mapping system with an overview of the circulatory system, physiology of the heart and cardiac arrhythmias and the technology platform of the application. The ECVue system is based on electrocardiographic imaging (ECGI) that …
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Genetic exploration of exercise associated sudden death in racehorses
… the public perception of horse racing. Cardiac-related issues are the cause of approximately 50% of EASD cases. Cardiac arrhythmias are also thought to be an important contributor to the EASD cases without a diagnosis at necropsy. In human patients without a diagnosis at necropsy, ion …
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Image guidance in cardiac electrophysiology
Cardiac arrhythmias are characterized by a disruption or abnormal conduction of electrical signals within the heart. Treatment of arrhythmias has dramatically evolved over the past half-century, and today, minimally-invasive catheter-based therapy is the preferred method of eliminating arrhythmias. …
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Mechanically-induced intercellular remodeling of cardiomyocytes by magnetic micromanipulation
… anisotropic conduction pathways that may cause cardiac arrhythmias. Structural and electrical remodeling of gap junctions have been linked to increases in stresses in conditions such as hypertrophy. Understanding how local mechanical forces influence the remodeling of gap junctions can provide …
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Arrhythmias in Pulmonary Hypertension
Cardiac arrhythmias are common in patients with pulmonary arterial hypertension (PAH) due to structural and electrical remodelling of the right heart, and are associated with adverse clinical outcomes. This study investigated the prevalence and clinical significance of conduction abnormalities and …
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The Voltage Gated Sodium Channel β1/β1B subunits: Emerging Therapeutic Targets in the Heart
… β subunits. While much of the field of cardiac electrophysiology and pathology has focused on treating and preventing cardiac arrhythmias by targeting the α subunit, there is also evidence that targeting the β subunits, particularly SCN1B, the gene that encodes β1 and an alternatively …
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The Role of the Ca2+-dependent protein kinase, CaMK-II, in Heart and Kidney Development in the Zebrafish, Danio rerio
… alterations in activation of CaMK-II induce cardiac arrhythmias and heart failure. Developmental roles for CaMK-II are not as well understood since mouse knockouts are embryonic lethal. Therefore the identification of other vertebrate CaMK-II genes will add to our understanding of …
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An electrophysiologic investigation of the normal and ischemic left ventricle
… exert a major influence in the electrogenesis of cardiac arrhythmias and ventricular fibrillation in the ischemic heart. Psychological adaptation of the conscious animal to the experimental environment appears to prevent ventricular fibrillation following coronary occlusion. Administration of …
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