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 28 for “"Open heart surgery"”.
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Design of a microcomputer-based open heart surgery patient monitor
A patient monitor device for use during open heart surgery has been designed and constructed. The device uses a VIC 20 microcomputer along with some additional circuitry to monitor 3 separate functions. The first patient variable monitored is the blood flow rate through the extracorporeal blood …
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A retrospective evaluation on the use of Cephalosporins in open-heart surgery
… decided to use this approach and concentrate an open-heart surgery in which the cephalosporins have been used prophylactically.</p>
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Effects of duration of selected music as an intervention on postoperative pain in open-heart surgery patients during chair rest on the first postoperative day
… pain and use of pain relief medications in open-heart surgery patients during chair rest on the first postoperative day.</p> <p> This study was conducted using a pretest-posttest experimental design. A convenience sample of 13 open-heart surgery patients from a metropolitan hospital in …
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Risk stratification in cardiac surgery: Algorithms and applications
… to predict 30-day and one-year mortality after open-heart surgery, to evaluate if the preoperative risk stratification model EuroSCORE predicts the different components of resource utilization in cardiac surgery, and to systematically evaluate the accuracy and performance of artificial neural …
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DESIGN & DEVELOPMENT OF HETEROTOPIC TRANSCATHETER TRICUSPID VALVES TO AMELIORATE TRICUSPID REGURGITATION
… are denied of the replacement valve surgery because they are deemed high risk for conventional open heart surgery. The advent of transcatheter technology gives them a new treatment alternative. However, so far, there has been no commercially available transcatheter tricuspid valve. …
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Early Postoperative Complications in Open Cardiac Surgery. A Current Strategy for Prediction and Risk Stratification // Ранни постоперативни усложнения при отворена сърдечна хирургия – съвременен подход за предикция и стратифициране на риска
Open-heart surgery remains one of the primary methods for treating various cardiovascular diseases. Despite advances in surgical technique, like any surgical intervention, these procedures carry the risk of various complications that determine patient survival and quality of life. Accurate risk …
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The Role of Rumination, Negative Affect, and Fitness on Cardiac Rehabilitation Program Outcomes following a Discrete Cardiac Event
… event such as a myocardial infarction or open heart surgery, cardiac rehabilitation (CR) can have large physical and psychological benefits. This study investigates the role of depression, anxiety, and rumination on CR outcomes including program completion and fitness improvements. …
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Adenosine and its role in cardioplegia : experimental evaluation in the isolated rat heart and in an-vivo primate model
… and ultrastructural recovery in the isolated rat heart and in the in-vivo baboon model during periods of global myocardial ischemia, simulating the clinical situation during open heart surgery. The results obtained in both models show that adenosine improved postischemic hemodynamic function when …
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A multi-channel system for use in cardiac electrophysiologic studies
… syndrome patients is performed manually during open heart surgery at Groote Schuur Hospital, using a hand-held roving electrode. This manual procedure is slow and tedious, prolonging the operation and the time for which the patient remains on cardiac bypass. A multichannel electrogram …
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Multiple Electrode Recording of Cardiac Activation.
… activation of the epicardial surface of the heart during open heart surgery. It consists of flexible circuit materials and represents and improved version of a multiple electrode array already in use for the purpose of recording the activity of multiple epicardial sites simultaneously. …
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Predicting Transcatheter Aortic Valve Leaflet Thrombosis Risk Using Pre-Procedural Computed Tomography Angiogram and Computational Modeling
… and is characterized by narrowing of the aortic heart valve due to calcium buildup. It restricts blood flow from the heart and, if left untreated, can lead to irreversible damage to the left ventricle wall and even death. The stenosed aortic valve is usually replaced with a bioprosthetic valve …
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Modeling of Aortic Valve Anatomic Geometry from Clinical Multi Detector-Row Computed Tomography Images
… involves insertion of a catheter into the heart through an artery or transapically, and expanding valve stent in place. This procedure dramatically reduces the recovery time by eliminating the need for open heart surgery. Understanding the biomechanics of the stent-valve interaction is …
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Acoustic Standing Wave Manipulation of Particles and Cells in Microfluidic Chips
… can be removed acoustically from shed blood from open heart surgery is demonstrated. An application for acoustic plasmapheresis is also shown where high quality blood plasma is generated. Different separator designs, device material, and the influence of the separation channel cross-section design …
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Aspects of retransfusion of shed blood in cardiac surgery
The use of cardiotomy suction during open heart surgery with cardiopulmonary bypass (CPB) has a long tradition and often regarded as mandatory. Recently, studies have described potentially negative effects of cardiotomy suction with activation of the complement system, enhanced inflammatory …
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Changes in the clotting viscoelasticity caused by cardiopulmonary bypass (CPB) surgery
One to three percent of the Open Heart Surgery procedures have abnormal bleeding due to acquired platelet dysfunction. Standard clotting tests to determine the cause of bleeding usually take between 25 and 60 minutes to get results. This time frame is not useful for deciding what type of treatment …
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Fluid Flow Characterization and In Silico Validation in a Rapid Prototyped Aortic Arch Model
<p>Transcatheter aortic heart valve replacement (TAVR) is a procedure to replace a failing aortic valve and is becoming the new standard of care for patients that are not candidates for open-heart surgery [2]. However, this minimally invasive technique has shown to cause ischemic brain lesions, or …
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Biomechanical Comparison of Wire Circlage and Rigid Plate Fixation for Median Sternotomy Closure in Human Cadaver Specimens
… Over 700,000 patients per year undergo open-heart surgery. Healing complication rates can be up to 5% of patients who undergo this procedure, with a morbidity rate of 50% if mediastinitis supervenes. A secure and rigid fixation of surgically divided sternum is critical to avoid healing …
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