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Coronary Artery Disease clinical trials

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NCT ID: NCT03394183 Suspended - Clinical trials for Coronary Artery Disease

Efficacy of Cardiac Rehab for Patients With Peripheral Artery Disease Versus Patients With Coronary Artery Disease

Start date: August 15, 2018
Phase: N/A
Study type: Interventional

Exercise is commonly recommended as a treatment for patients who present with peripheral artery disease (PAD). Although a great deal of research has supported the efficacy of exercise rehabilitation for PAD, it is infrequently implemented into clinical practices.To date, no comparison of cardiac rehabilitation efficacy and acute exercise responses has been made between patients with PAD and patients with coronary artery disease (CAD). Considering some of the parallels between the two conditions, as they are both atherosclerotic conditions, and the strong recommendations for exercise in both populations, it is worthwhile to compare the efficacy of cardiac rehabilitation responses. It is also unclear if the magnitude of response for PAD patients is dependent on biological sex and clinical presentation as this may influence the development of exercise prescriptions. This study will be a prospective two-arm cohort study with both groups (CAD and PAD) undergoing the same intervention (standard 6 month out-patient cardiac rehabilitation program offered at the Toronto Rehabilitation Institute Rumsey Centre). The primary variable of interest will be peak oxygen consumption (VO2peak) with a secondary variable of interest being functional capacity, as measured by the 6-minute walk test. Tertiary variables of interest will include walking impairment, as measured by the Walking Impairment Questionnaire, and quality of life, as measured by the Short Form-36 health survey (SF-36).The second objective of this study is to determine if the magnitude of responses to cardiac rehabilitation for patients with PAD are dependent on biological sex or type of PAD (asymptomatic, post-surgical intervention, or intermittent claudication).Exploratory objectives include comparing acute exercise responses (prescribed exercise training load, actual training load, exercising heart rate and rating of perceived exertion) between PAD and CAD patients.

NCT ID: NCT03050346 Suspended - Clinical trials for Coronary Artery Disease

Breathing-Induced Myocardial Oxygenation Reserve

Start date: January 2016
Study type: Observational

This is a clinical trial to test the clinical feasibility and safety of a novel CMR protocol, combined with a specific breathing maneuver to identify myocardial regions exposed to severe coronary artery stenosis.

NCT ID: NCT02916485 Suspended - Clinical trials for Coronary Artery Disease

Safety and Clinical Performance of a Sirolimus-eluting Absorbable Metal Scaffold

Start date: June 2017
Phase: N/A
Study type: Interventional

Assessment of the clinical performance and the safety of the Magmaris Sirolimus-Eluting Resorbable Coronary Magnesium Scaffold in a cohort of patients in India with de novo coronary artery lesions.

NCT ID: NCT02607241 Suspended - Clinical trials for Coronary Artery Disease

Comparison of Paclitaxel-Coated Balloons Against Drug-Eluting Bioresorbable Scaffolds for Elective PCI Using OCT

Start date: November 2015
Phase: Phase 4
Study type: Interventional

This prospective randomized clinical trial aims to compare two different "metal-free" strategies for elective percutaneous coronary revascularization: the FFR-guided DCB-only PCI (drug-coated balloon: SeQuent Please™, B Braun Melsungen GmBH) vs. OCT-guided BRS implantation (bioresorbable scaffold: Absorb™, Abbott Vascular).

NCT ID: NCT02561000 Suspended - Clinical trials for Coronary Artery Disease

Safety of PZ-128 in Subjects Undergoing Non-Emergent Percutaneous Coronary Intervention

Start date: May 27, 2016
Phase: Phase 2
Study type: Interventional

The object of the study is to determine whether different doses of PZ-128, when added to standard medical care in persons undergoing cardiac catheterization/percutaneous coronary intervention, will increase the risk of bleeding. A secondary objective is to determine whether patients treated with PZ-128 have fewer cardiac events such as heart attack, bypass surgery or stroke compared with those persons treated with the standard of care.

NCT ID: NCT02474485 Suspended - Clinical trials for Coronary Artery Disease

Absorb BVS vs. Drug Coated Balloon for Treatment Of ISR

Start date: March 2015
Phase: N/A
Study type: Interventional

AbsorbISR is a randomized, controlled trial, single center, prospective, not blinded to evaluate two strategies of in stent restenosis treatment: Implantation of drug eluting bioresorbable stent scaffold Absorb® vs. balloon angioplasty with drug eluting balloon Sequent Please®.

NCT ID: NCT02472002 Suspended - Coronary Disease Clinical Trials

Mesenchymal Stem Cell Administration in the Treatment of Coronary Graft Disease in Heart Transplant Patients

Start date: January 2014
Phase: Phase 1/Phase 2
Study type: Interventional

MES-HT is a pilot multicenter prospective study conducted in transplant patients who developed severe coronary vasculopathy. A preparation of autologous mesenchymal cells of bone marrow is administered by endomyocardial injection, guided by the Noga® cardiac mapping system. The main objective is to determine the effect of the administration of autologous mesenchymal cells of the bone marrow by intramyocardial injection on myocardial perfusion in cardiac transplant patients with severe coronary vasculopathy.

NCT ID: NCT02468778 Suspended - Clinical trials for Coronary Artery Disease

Supporting Patients Undergoing HIgh-Risk PCI Using a High-Flow PErcutaneous Left Ventricular Support Device (SHIELD II)

Start date: August 2015
Phase: N/A
Study type: Interventional

The HeartMate PHP System is a temporary (<6 hours) ventricular assist device indicated for use during high risk percutaneous coronary interventions (PCI) performed in elective or urgent, hemodynamically stable patients with severe coronary artery disease and depressed left ventricular ejection fraction.

NCT ID: NCT02332564 Suspended - Clinical trials for Coronary Artery Disease

Coronary Steal Via Natural Internal Mammary Artery-To-Coronary Artery Bypasses

Start date: December 2014
Phase: N/A
Study type: Observational

CORONARY ARTERY DISEASE AND THE BENEFIT OF BYPASSES Despite considerable advances in medicine, cardiovascular diseases remain the number one cause of death globally. In industrialized countries, coronary artery disease (CAD) is the leading cause of death, consequence of myocardial infarction (MI). Artificial - or natural - bypasses exert a protective effect by providing an alternative source of blood flow to a myocardial territory potentially affected by an acute coronary occlusion. Coronary collaterals represent pre-existing inter-arterial anastomoses and as such are the natural counter-part of surgically created bypasses. In patients with chronic CAD, sufficient coronary collaterals have been shown to confer a significant benefits in terms of overall mortality and cardiovascular events. EXTRACARDIAC-TO-CORONARY COLLATERAL SUPPLY Commonly, coronary collaterals are implicitly understood to exist between coronary artery branches. However, the structural existence of coronary collaterals with an extracardiac connection has been confirmed by anatomical investigations. Pathophysiologically and with regard to a potential for arteriogenic stimulation, the connections from the internal mammary arteries, are of special interest. In a recently published work the investigators have investigated the effect of temporary balloon occlusion of the distal IMA on coronary collateral function. There were equivocal findings for the left circumflex coronary artery: CFI was increased by ipsilateral IMA occlusion, but the level of myocardial ischemia was unchanged. MYOCARDIAL STEAL VIA INTERNAL MAMMARY ARTERIES In the investigators' previous study, the coronary occlusion with simultaneous distal IMA occlusion was always performed first as a conservative measure against false-positive detection of internal-mammary-to-coronary artery connections. Repetitive coronary occlusions per se result in higher collateral flow by collateral recruitment and reduced ischemia by ischemic preconditioning and augmented collateral function. Conversely, the sensitivity of the employed method was reduced and might have contributed to the equivocal findings in case of the left circumflex artery. Moreover, the hypothesize d mechanism of localized pressure augmentation was not investigated. This study aims to further characterize the prevalence and function of natural ipsilateral IMA-to-coronary connections, as well as to investigate the hemodynamic mechanisms of coronary collateral function augmentation by distal IMA occlusion. In the investigators' last study, the increased coronary collateral function in response to manipulation of a potential coronary collateral donor (in this case, the IMA) was taken as indirect evidence for the existence of IMA-to-coronary-artery connections. Thus, the employed distal IMA occlusion served as a positive stimulus. Conceptually, additional evaluation with a negative stimulus could heighten the discriminatory power of the investigation. This could be in the form of a hyperemic stimulus affecting the collateral donor, ie in analogy to myocardial or coronary steal (ie, a reduction in coronary collateral supply to a collateral recipient).

NCT ID: NCT01740739 Suspended - Clinical trials for Coronary Artery Disease

Evaluation Using ClearView in Determining Association to the Cardiac Risk Factors

Start date: November 2012
Phase: N/A
Study type: Observational

The objective of this study is to explore the relationship between the ClearView scan results and a variety of cardiovascular risk indicators such as the Coronary Calcium Score, Framingham Risk Factors, Reynolds Risk Score, and biomarkers of inflammation. The ClearView device is a bio-electrographic tool that may assist medical professionals in rapid assessment of the systemic origin of the patient's presenting symptom(s). The ClearView is a potentially valuable resource that may benefit a physician's office by offering expedited differentiation capabilities. The subsequent results have the potential to include more data that would allow rapid patient diagnosis, triage, and treatment; optimized precious resource expenditure (nursing, physician, etc.); lower costs to facility, patient and insurance company; and decreased office wait time.