Sökning: "coronary artery blood flow"
Visar resultat 36 - 40 av 45 avhandlingar innehållade orden coronary artery blood flow.
36. Measures to prevent microembolization in cardiac surgery and during angiography with special reference to carbon dioxide
Sammanfattning : Background: Cardiovascular interventions including open heart surgery using cardiopulmonary bypass (CPB) and coronary angiography may introduce air and particulate arterial embolism that may lead to tissue lesions of the brain and other organs. Aims: To assess: if CO2-insufflation of an empty CPB circuit decreases number of gaseous emboli in the prime compared with a conventional CPB circuit, which holds air before fluid priming (Study I); the efficacy of a new mini-diffuser device for CO2 de-airing in a minimally invasive open cardiothoracic wound cavity model and in patients undergoing minimally invasive open aortic valve surgery (Study II); if an extra separate venous reservoir abolishes CO2-insufflation induced hypercapnia and retains sweep gas flow of the oxygenator constant during open heart surgery (Study III); if there is a difference in the incidence of cerebral microemboli when using either the femoral or the radial approach during coronary angiography (Study IV). LÄS MER
37. Studies on vasoactivity of fibrin(ogen) derived peptides
Sammanfattning : Fibrin accumulation is a common fmding in many pathological conditions, such as in inflammatory processes, e.g. in the lungs in pneumonia or pulmonary insufficiency after sepsis. During lysis of the fibrin by plasmin or leukocyte elastase, peptides are released that may contribute to the pathophysiological changes. LÄS MER
38. Evaluation of Automatic Quantification Programs for Myocardial Perfusion SPECT using Monte Carlo Simulations
Sammanfattning : Coronary artery disease (CAD) is a condition in which the blood supply to the myocardium is partially or completely blocked due to plaque build-up in the artery wall. Myocardial SPECT imaging is a commonly used technique to assess the blood flow to the myocardium and the function of the heart. LÄS MER
39. Pharmacological interventions against myocardial ischemia and reperfusion injury
Sammanfattning : Background: Ischaemic heart disease is the leading cause of death in the industrialised world. Although the concept of early restoration of coronary blood-flow constitutes an important factor to reduce the injury caused by myocardial ischaemia, reperfusion in itself can aggravate the damage to myocardial tissue, a phenomenon denoted myocardial reperfusion injury. LÄS MER
40. Endothelial dysfunction in the pulmanory circulation after cardiopulmonary bybass : with special reference to the reactivity to acetylcholine
Sammanfattning : The endothelium is important as a physical barrier between the bloodstream and the body tissues. It also plays an important role in the control of vasomotor tone, coagulation, and for the interaction between the vessel wall, leukocytes and platelets. One of the most important regulators released from the endothelium is nitric oxide (NO). LÄS MER
