Search for dissertations about: "heart surgery"

Showing result 6 - 10 of 231 swedish dissertations containing the words heart surgery.

2. 6. Atrial Fibrillation after Coronary Artery Bypass Surgery : A Study of Causes and Risk Factors

   Author : Lena Jidéus; Dan Lindblom; Uppsala universitet; []
   Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Surgery; Atrial fibrillation; catecholamines; coronary artery bypass surgery; heart rate variability; neuropeptides; premature atrial contraction; thoracic epidural anaesthesia; Kirurgi; Surgery; Kirurgi; Thoracic and Cardivascular Suregery; kirurgi; särskilt thoraxkirurgi;

   Abstract : The aim was to study pathophysiological mechanisms and risk factors for developing atrial fibrillation (AF) after coronary artery bypass grafting (CABG), and the effect of thoracic epidural anaesthesia (TEA).The study comprised 141 patients undergoing CABG, including 45 patients randomised for TEA intra- and postoperatively. READ MORE

4. 7. Risk stratification in cardiac surgery: Algorithms and applications

   Author : Johan Nilsson; Thoraxkirurgi; []
   Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Surgery; orthopaedics; traumatology; Kardiovaskulära systemet; Cardiovascular system; Cardiac surgery; Statistics; Artificial neural networks; Resource utilization; Mortality; Risk factors; Kirurgi; ortopedi; traumatologi;

   Abstract : The aims of this research was to compare different risk score algorithms with regard to their validity 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 networks (ANNs) to select and rank the most important risk factors for operative mortality in open-heart surgery. Preoperative evaluation of the surgical risk is an important component in cardiac surgery. READ MORE

5. 8. Modulation of the Immune Response in Concordant Xenotransplantation

   Author : Adam Bersztel; Gunnar Tufveson; Michael Olausson; Uppsala universitet; []
   Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Surgery; Antibodies; blood transfusions; heart; pancreatic islets; tolerance; xenotransplantation; Kirurgi; Surgery; Kirurgi; Surgery; kirurgi;

   Abstract : Xenotransplantation, i.e. transplantation between different species, could be a possible solution to the present shortage of organ donors. The immunological response to a xenograft is strong and difficult to suppress. READ MORE

6. 9. Metabolic intervention during blood cardioplegia. Clinical studies in coronary surgery and heart transplantation

   Author : Ulf Kjellman; Göteborgs universitet; []
   Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Cardiac surgery; heart transplantation; oxygen extraction; substrate metabolism; predictors of ischemic injuries; a - ketoglutarate; insulin;

   Abstract : Myocardial ischemia and injury (infarction) during open heart surgery and heart transplantation is a problem in spite of the fact that it is a safe procedure today. The myocardial substrate metabolism is well investigated before and after the cardioplegic period but little knowledge exists about the myocardial metabolic changes during cardioplegia. READ MORE

7. 10. Delirium after cardiac surgery : risk factors, assessment methods and costs

   Author : Nina Smulter; Karl Gunnar Engström; Birgitta Olofsson; Micael Appelblad; Staffan Svenmarker; Henrik Bjursten; Umeå universitet; []
   Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Cardiac surgery; Cardiopulmonary bypass; Consequences; Delirium; Detection; Documentation; Economical aspect; Hospitalisation; Risk factors; Screening scales; Thoracic and Cardivascular Suregery; kirurgi; särskilt thoraxkirurgi; omvårdnadsforskning med medicinsk inriktning; Caring Sciences;

   Abstract : Background: Cardiac surgery is considered safe, but postoperative delirium (POD) remains frequently reported. Delirium is characterised by fluctuations in consciousness and cognition, and can be subdivided into disturbed psychomotoric activity (hyperactive and hypoactive) and psychiatric symptom profiles (psychotic and emotional). READ MORE