Active clinical trials for "Coronary Artery Disease"

The purpose of this study is to understand routine use of FFR (Fractional Flow Reserve) and alternate indices in clinical practice. This study will determine the use and clinical outcome of FFR-guided PCI in patients presenting with either stable coronary artery disease, or in patients presenting with Acute Coronary Syndrome (ACS) on culprit and non-culprit lesions as well as during index and secondary procedures.

Schizophrenia is a severe mental illness associated with excess mortality and affecting nearly 1% of the population. The average life expectancy for patients diagnosed with schizophrenia has been 55-60 years through the last generations in Denmark, while the general population has over the same period of time experienced an increase in life expectancy. As a result, the standardized mortality rate for patients with schizophrenia has increased markedly over the last three decades and is currently a major public health concern. Causes of death are mainly cardiovascular disease and patients diagnosed with schizophrenia has a relative risk of cardiovascular disease that is about 2-fold higher than the general population.

A randomised controlled trial to compare two strategies for the investigation of coronary artery disease at the time of angiography. Patients will be randomised to conventional angiography or additional, routine pressure wire assessment - measuring fractional flow reserve (FFR) - in all main vessels judged as being of sufficient vessel calibre to allow percutaneous coronary intervention (PCI) (experimental arm).

A single center cohort which enrolled women who performed mammography, bone densitometry (DEXA), and coronary CT angiography in Seoul National University Bundang Hospital from March 2011 to February 2013.

This is a 2x2 study examining the impacts of a novel exercise regimen and daily text message reminders in patients at high risk for cardiovascular disease. Patients participating in cardiac rehabilitation will be randomized to either moderate intensity continuous training (MICT) or a novel exercise regimen consisting of three periods of high intensity exercise, called BURST exercise. Additionally, half of the patients in each exercise group will be randomized to receive daily text message reminders to improve adherence to the prescribed exercise regimen.

This study will examine whether pre-operative, non-invasive arterial stiffness measurements can be used to predict which patients will develop an aortic-to-radial pressure gradient after coronary artery bypass graft (CABG) surgery. A previous small study by Kanazawa, et al. demonstrated in patients who developed an aortic-to-radial pressure gradient after CABG surgery, the pulse wave velocity (PWV) was higher in the aorta and decreased when moving toward the radial artery. In the patients who did not develop a pressure gradient, the PWV started lower in the aorta and increased when moving towards the periphery. The purpose of this investigation is to examine whether pre-operative PWV measurements can be used to identify patients who will develop an aortic to radial pressure gradient after CABG surgery. Applanation tonometry will be performed on the right carotid and femoral arteries to assess carotid-femoral pulse wave velocity, a surrogate for aortic stiffness. (SphygmoCor system, AtCor Medical, Sydney, Australia). The measurement will be obtained before induction of general anesthesia in the presurgical area. Also in the presurgical area, a non-invasive cardiac output (CO) measurement will be obtained by using the ICON Device (Osypka Medical, La Jolla, California). This CO value will be used to compare to the CO values obtained invasively in the operating room.

Coronary Computed Tomographic Angiography (CCTA) is emerging as the diagnostic test of choice in chest pain patients with low to intermediate probability of coronary artery disease (CAD). Qualified CCTA readers may not be available around the clock in most centers, limiting the use of CCTA. This study aimed to determine if well-qualified CCTA technicians can provide initial accurate diagnosis to guide initial management and triage of such patients

In-stent restenosis remains one of the most challenging problems in patients after coronary artery angioplasty. Angiographically, it is discovered in 10% of the patients after drug-eluting stent (DES) implantation. There are multiple factors causing restenosis, which can be divided into two major groups: first vessel-dependent (based on the vessel's tortuosity, dimensions and lesion's calcification, all leading to suboptimal stent expansion), and second dependent on the inflammatory processes caused by the intervention. Study objectives is the analysis of the possible correlation between allergy to metals utilised during the stent manufacturing (nickel, cobalt, chromium, molybdenum, tungsten) and in-stent restenosis occurence. The angiographic results of stent implantation, and in-stent restenosis will be assessed independently by two skilled interventional cardiologists, and in case of their discrepant opinions, the decision will be made on the basis of the third cardiologist. The tests will be applicated during the hospitalisation, then read after 48 hours and 72 hours, and subsequently interpreted by the skilled dermatologist, during the hospital stay or afterwards.

The background for performing the present study is to compare the mass calculations by CT scanning and by invasive absolute blood flow measurements and thereby corroborating both methods.

Enrollment: Patients with stable coronary artery disease (SCAD) and moderate coronary artery stenoses (30-70 %) Patients with acute myocardial infarction and moderate stenosis of non-culprit arteries (NCL; BYSTANDER LESION) Aims: To assess the diagnostic accuracy of dobutamine stress echocardiography (DSE) and invasive fractional flow reserve (FFR) measurement To assess the prognostic impact of reclassification by a mismatching negative test Hypothesis: DSE and FFR have similar prognostic value in both clinical settings (SCAD and NCL) Considering the strong negative predictive value of both DSE and FFR, one negative test is sufficiently enough to defer revascularisation, even in the case of mismatch