View clinical trials related to Myocardial Ischemia.
Filter by:There has been a shortage of nuclear isotopes, not only in Canada but around the world. New, more sensitive SPECT cameras can obtain better images in shorter scan times. These cameras have also shown the ability to use a smaller dose of radioisotope to obtain the images. New software has been tested on the standard camera, the GE Infinia-Hawkeye SPECT/CT. The Diagnostic Imaging Department of The University of Ottawa Heart Institute has also acquired a new camera, the Discovery NM530c CZT and has been doing heart scans in shorter times. The investigators will now be looking at the quality of images using less isotope during SPECT myocardial perfusion imaging for diagnostic and prognostic purposes.
The purpose of this study is to identify risk factors for insulin resistance and to investigate the influence of insulin sensitivity on development of cardiovascular risk markers like blood pressure, heart rate, body build (weight, BMI, waist-hip ratio, skinfold thickness), reduced insulin sensitivity, diabetes mellitus, dyslipidaemia, and sympathoadrenal activity or manifest cardiovascular disease among young men during 10-20 years.
The study aims to further assess the safety, efficacy and the performance of its delivery system of FIREHAWK rapamycin-eluting stent up to five years.
Coronary artery disease is a major cause of death in patients with renal dysfunction Among patients who undergo coronary artery bypass grafting ,renal dysfunction is known To be a major predictor of in-hospital and remote mortality As little is known about the impact of non-dialysis-dependent renal dysfunction on short and mid term Outcomes following coronary surgery we have decided to investigate the effect of prophylactic Hemodialysis on the mortality and morbidity of the patients with ckd (stage 3,4 ) and compare these Effect with the control group
The investigator will evaluate the clinical outcomes of the patients in whom the treatment strategy for their coronary stenosis were determined by fractional flow reserve measurement.
The purpose of this study is to evaluate the potential benefit of targeting patients' expectations before coronary artery bypass graft surgery through a brief psychoeducational intervention.
The purpose of this study is to measure the percentage of women with known Coronary Artery Disease (CAD) who are hyporesponsive to low dose (81 mg) aspirin.
The purpose of this study is to see if providing information to a person on their inherited (genetic) risk of cardiovascular disease (CVD) helps to motivate that person to change their diet, lifestyle or medication regimen to alter their risk.
The aim of this study is to prospectively investigate if intermittent Phosphodiesterase 5 inhibition for 15 weeks improves myocardial perfusion by angiogenesis in patients with therapy refractory myocardial ischemia due to coronary artery disease judged to be unsuitable for surgical or percutaneous revascularisation. For proof of efficacy the following tests will be performed at baseline and one day and 4 weeks after discontinuation of therapy: Exercise tolerance will be evaluated by bicycle exercise testing. Blood tests will be performed to evaluate markers of angiogenesis (endothelial progenitor cells, vascular endothelial growth factor, basic fibroblast growth factor). The improvement of myocardial perfusion will be tested functionally as increase of coronary flow reserve by positron emission tomography. Moreover, changes in ventricular function, symptoms and quality of life will be assessed.
Computer tomography coronary angiogram (CTCA) has emerged as a noninvasive alternative to assessing coronary artery luminal disease. Although the use of noninvasive CTCA for the detection of coronary artery disease is on the rise, the current technology of the 64-row multidetector computer tomography (MDCT) is subjected to multiple patient artifacts that can affect image quality.To eliminate these patient related artifacts a more advanced 320-row MDCT was recently developed. The investigators therefore propose that the newly developed 320-MDCT can provide an accurate noninvasive assessment of the severity of coronary artery luminal stenosis as an alternative to an invasive coronary angiogram.