View clinical trials related to Myocardial Ischemia.
Filter by:The primary objective of this study is to characterize coronary artery blockages as determined by the LipiScan combined NIRS-IVUS catheter using multi-vessel imaging.
Resolute zotarolimus-eluting stent (ZES) system (Medtronic, USA) has been world-wildly used in treating patients with coronary artery disease (CAD). The State Food and Drug Administration of China has approved qualification of RESOLUTE zotarolimus-eluting stent system in 2010. It has been reported that RESOLUTE stent may be more suitable for DM patients and FDA has approved diabetic coronary lesion as a indication for using Resolute stent. Here the investigators set out a multicenter, non-inferiority study: the efficacy and safety of RESOLUTE zotarolimus-eluting stents in treatment of Chinese diabetes (RESOLUTE-DIABETES CHINA) in purpose of identifying the efficacy and safety in Asia CAD correlated with diabetic population.
Fractional Flow Reserve derived from computed tomography(FFRCT) is a novel method for determining the physiologic significance of coronary artery disease (CAD), which will help physicians in clinical decision-making and decrease the medical cost, but its ability to identify patients with ischemia has not been adequately examined to date.
The iFRCT study is a prospective, multicenter study to evaluate the diagnostic performance of iFRCT with the use of ≥64-detector row CT scanners for the detection and exclusion of significant obstructive coronary artery disease, defined by invasive fractiona flow reserve (FFR) as the reference standard.
This is a multi-center, prospective, non-randomized, double-blinded trial to evaluate the sensitivity and specificity of the CADence device in detecting the existence of clinically significant coronary artery disease as determined by either standard or CT angiography.
Stent coverage and neo-intimal growth can be evaluated in-detail by intracoronary optical coherence tomography (OCT), which is a catheter-based imaging technique. It is performed as part of the PCI procedure. OCT is the optical analogue of intravascular ultrasound (IVUS), except that it can provide much higher resolution of coronary cross sectional images than IVUS. The LightLab C7XR OCT system (Frequency Domain OCT) used in this Hospital has obtained full CE Mark, approved by the US FDA, and approved for clinical use in Hong Kong. It has been shown to be safe in clinical settings and has been used in over 300 patients without complication at Queen Mary Hospital. In this study, stent coverage and neo-intimal growth between zotarolimus-eluting stents (ZES) and biolimus-eluting stents (BES) will be compared by using OCT at 9 month and specific post-intervention re-study intervals. The investigators objective is to investigate the clinical impact and OCT difference on early stent healing and late lumen loss between the two new-generation limus-eluting-stents - Resolute Integrity and Biomatrix, which differ in stent design, eluting drug and coating polymer.
Concerning the promotion of peripheral collateral growth, clinical studies investigating new therapeutic strategies have used imprecise assessment methods and therefore determined only "weak" endpoints. In contrast to the coronary circulation, there is currently no gold standard available to document successful promotion of collateral growth in patients suffering from peripheral artery disease. Therefore, the purpose of this study is to evaluate a new invasive method to quantify arterial collateral flow in the lower extremity in patients undergoing elective coronary angiography.
Diagonal ear lobe crease and microcirculatory disorder in the conjunctiva are both non invasive methods documented in the literature as early signs of coronary artery disease. We wish to study the sensitivity and specificity of both signs by conducting a single blind study involving patients with documented presence or absence of coronary artery disease via angiogram.
Reducing the rest time after diagnostic cardiac catheterization for three hours does not increase the complications concerning to the procedure, compared to the rest of five hours.
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.