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 23 for “"Defibrillation"”.
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New Paradigm of Defibrillation: Towards Painless Therapy
… atrial tachyarrhythmias and the mechanisms of defibrillation using the conventional high-voltage single shock. Through the use of novel fluorescent optical mapping techniques and several animal models of ventricular and atrial arrhythmias, we develop and validate several novel low-voltage …
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An analysis of defibrillation and cardiac resynchronization therapy strategies in patients with failing systemic right ventricles
… Endocardial, epicardial and transthoracic defibrillation strategies were examined in 5 consecutive cases. A hybridized form of CRT was employed in two patients. Only one patient demonstrated response to therapy while the other deteriorated during biventricular pacing (BVP). This prompted a …
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Adaptive defibrillator design
… with myocardivim abnormalities. Electrical defibrillation is usually achieved by passing an electrical current pulse transthoracically through the heart of the patient. The source of this electrical current is usually a high voltage capacitor. The successful operation of defibrillators …
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A study of defibrillator waveforms, vectors, and therapies Kevin Anthony Michael.
The defibrillation studies were performed in a porcine model given its resemblance to the human heart and its resilience to repeated ventricular fibrillation inductions (VF) and defibrillations. A novel sequential preshock waveform was assessed in a prototype serial capacitance device. Single and …
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LUCAS - Lund University Cardiopulmonary Assist System
… will increase if LUCAS-CPR is given before defibrillation, and if defibrillation is given during on-going chest compressions. 4. LUCAS-CPR will cause fewer rib fractures than manual CPR. LUCAS-CPR gave significantly higher rates of ROSC and significantly higher CPP than manual CPR. LUCAS-CPR …
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High Resolution Multi-parametric Diagnostics and Therapy of Atrial Fibrillation: Chasing Arrhythmia Vulnerabilities in the Spatial Domain
… becomes a significant concern for electrical defibrillation of AF due to the fact that a patient is conscious when experiencing the arrhythmia. Limiting the risk of myocardial injury is key for both forms of fibrillation. In this project we aim to address the limitations of current …
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Atrial Arrhythmogenic Substrates: The Role of Structure and Molecular Remodeling
… explore the application of a novel low-voltage defibrillation therapy to a rabbit model of atrial tachyarrhythmias and show significant reductions in the defibrillation threshold for both AF and AFl. We utilize a variety of experimental techniques, such as high throughput quantitative PCR, …
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Study of the Kalman filter for arrhythmia detection with intracardiac electrograms
… to reverse ventricular fibrillation (VF) by defibrillation and ventricular tachycardia (VT) by low-energy cardioversion or antitachycardia pacing. The schemes for detecting cardiac arrhythmias often realize nonpathologic tachycardia as serious arrhythmias and deliver false shocks. In this …
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Isolation of Cellulose Nanofibres: Elucidation of a Novel Approach Utilizing Fungal Pretreatment
… is investigated which can bring about internal defibrillation in the fibres through reduction of hydrogen bonds and cleavage of hemicellulose chains tethering the cellulose microfibrils together. The pre-treatment of wood fibres with Ophiostoma Ulmi, a causative agent of Dutch elm disease in Elm …
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Human Factors in Drone Delivery of Automatic External Defibrillators for Out of Hospital Cardiac Arrest: Older Adult Considerations
… Cardiac Arrests (OHCA) due to earlier access to defibrillation. There is a lack of user-centred, and older adult-focused research in this area. The present study evaluated the perceptions and interactions of older adults with a drone delivered AED operation to identify human factors …
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The Experiences of Women Who Live with an Implantable Cardioverter-Defibrillator (lCD)
… these arrhythmias by pacing, cardioversion, and defibrillation thereby providing lifesaving therapy to patients at risk for sudden cardiac death. Currently, 150,000 Americans receive ICDs each year. Although most lCD recipients are men, more women are now qualifying for insertion (Stutts, Cross, …
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Prehospital Care of Out-of-Hospital Cardiac Arrest Patients
… was ventricular fibrillation in 22 (29.3%) cases,defibrillation performed in the ambulance were 4 (18.2%) cases. CONCLUSION: By stander and 119 resuscitation were not satisfactory in the care of the out-of-hospital cardiac arrests.Witnessed arrest and bystander CPR did not significantly affect the …
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Validation of weight estimation by age and length based methods in the South African population
… 1: 10000), Fluid bolus (20ml/kg) and First Shock defibrillation dose (2J/Kg) to determine which were clinically useful. A database of 3233 children between 1 and 12 years seen at Red Cross Hospital· Trauma Unit in Cape Town during 2002 was used. Measured weight was compared to estimated weights …
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How to Mend a Broken Heart: Massive Endocytosis and the Role of Lipidic Forces in Membrane Trafficking
… have been implicated in hypertrophy, atrial defibrillation, and damage post myocardial ischemia. It is possible that the properties underlying MEND mechanics may be responsible for some of these acute cardiac changes. Protocols that induce massive endocytosis were performed on isolated …
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Status of the implementation of automated external defibrillators in South Korean health/fitness facilities
… health/fitness facilities were ready to provide defibrillation with an AED by an on-duty trained staff member in an emergency situation. Results of the factor analysis generated a five factor model for perceived constraints to AED implementation including Cost, No Need, Lack of Support, Lack of …
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A 12-month retrospective descriptive analysis of a single helicopter emergency medical service operator in four South-African provinces
… 45.2%). No patients received fibrinolysis, defibrillation, cardioversion or cardiac pacing. Almost all patients received intravenous fluid therapy (n=867, 94.7%). The administration of sedation (n=430, 46.9%) and analgesia (n=329, 35.9%) were also common interventions. Conclusion: By …
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An innovative resuscitation training strategy for primary care nurses: feasibility study for a randomised controlled trial
… app to demonstrate resuscitation including defibrillation skills. Quantitative data were collected using the Lifesaver app, scenario observations sheets, QCPR app and questionnaires. Narrative data were elicited at each visit from a short, in-person focused interview. The study was conducted …
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The Effect of Electroshock on the Passage of Bacteria From a Contaminated Transducer Past a Protective Membrane into a Disposable Chamber Dome
… such as a patient might undergo during cardiac defibrillation, could allow bacterial transmission at the dome-transducer junction a number of domes were subjected to 400 watt seconds of electroshock. It was hypothesized that electroshock might damage the dome membrane or dome membrane seal in …
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