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Browse 7,313 clinical trials for heart disease. Find studies that match your criteria and connect with research centers.
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NCT00433784
The purpose of this study was to assess whether interpatient variability in the platelet response to clopidogrel is partly due to polymorphisms of the hepatic cytochrome P450 (CYP450)3A and of the clopidogrel-P2Y12 receptor genes.
NCT01645228
To validate the capability of non-invasive bio-image tests in prediction of significant coronary stenosis of symptomatic adults.
NCT01660828
Strenuous exercise in apparent healthy individuals increases plasma (high sensitive) troponin levels. The underlying mechanism is not yet elucidated, but could be explained by changes due to a mismatch in oxygen demand and supply that mimic those of ischemia and reperfusion injury. If the mechanism underlying the troponin release during exercise is similar to that of ischemia reperfusion injury (IRI), than it should be susceptible to remote ischemic preconditioning (RIPC) as RIPC is a well validated technique to reduce IRI. To test this hypothesis healthy volunteers underwent a strenuous exercise test with or without preceding RIPC.
NCT01310608
Patients undergoing cardiac surgery frequently develop neurologic complications, ranging from subtle cognitive changes to evident confusion, delirium, and stroke. This continuum of complications is commonly caused by embolization in the brain due to manipulation of atherosclerotic parts of the aorta ascendens (AA) during surgery. Timely detection of AA atherosclerosis before surgery enables the surgeon to consider changes of the surgical plan, to reduce the risk of embolization and thus subsequent neurologic complications. Various methods exist to visualize the AA to detect atherosclerosis. Epiaortic ultrasound scanning has become the gold standard, but is seldom used as it interferes often with surgical plan and can only be used after sternotomy. Transesophageal echocardiography (TEE) is a widely used imaging method permitting evaluation of the aorta preoperatively, but assessment of distal AA is hampered by interposition of air-filled trachea between esophagus and AA. The A-View® (Aortic-view) method, a modification of conventional TEE using a fluidfilled balloon, overcomes this limitation. The safety and diagnostic accuracy of the A-View® have successfully been shown in previous studies. The hypothesis of this study is that the use of A-View will reduce cerebral embolization secondary to a change of surgical technique.