View clinical trials related to Coronary Angiography.
Filter by:Coronary intermediate lesions generally refer to lumen narrowing with diameter stenosis% (DS%) between 50% and 70% on angiography. Prognosis varies significantly among patients with intermediate lesions, and some lesions progress rapidly leading to adverse cardiovascular events. Therefore, accurate risk stratification is important and will help clinicians identify patients at high risk of adverse events. The aim of study is to identify independent risk factors for major adverse cardiovascular events (MACE) among patients with intermediate lesions. The study is a prospective, single-center, ongoing, observational study, which aims at enrolling approximately 1389 patients with intermediate coronary lesions. After enrollment, the following data are collected for each participant: baseline characteristics including demographics, clinical presentation, traditional risk factor, diagnosis and management; lesion characteristics assessed by coronary angiography; quantitative flow reserve; lab tests including blood chemistry, blood lipid, hemoglobin A1C, cardiac biomarker, BNP, et al. Patients are followed up at 2 year for primary outcome including death, myocardial infarction and repeat unplanned revascularization. A risk prediction score will be established and validated for major adverse cardiovascular disease at two-year follow-up.
The study team aims to perform a prospective observational case series of one hundred consecutive distal radial artery heart catheterizations to evaluate the safety and feasibility of distal radial access. Distal radial artery access has evolved in the past few years as an alternative to the standard radial artery access for coronary angiography and interventions. However, the available data on the distal radial artery access for coronary angiography and interventions is limited to case reports and small retrospective case series. To date, no prospective randomized data is available. Therefore, the investigators aim to perform a prospective observational case series of one hundred sequential left heart catheterizations performed via distal radial artery to evaluate the safety and feasibility of the distal radial artery access.
The use of coronary intervention has increased over the last decade. Contrast induced nephropathy (CIN) that develops as a result of procedures using intravenous or intra arterial contrast enhancement, or other diagnostic procedures, has been reported to be the third leading cause of acute renal failure in hospitalized patients. It has been hypothesized that this occurs as a result of direct toxicity, oxidative stress, and ischemic injury. Numerous studies have evaluated the incidence of CIN in patients undergoing angiography. There are limited studies in the acute care setting. Therefore, a tool that could identify early risk factors for CIN would be valuable for patient care. Metabolomic profiling is the identification of small molecule metabolites that are altered in response to injury. We hypothetize that urine metabolomic profiles may differ in patients before and after contrast administration coronary intervention.We hypothesized that metabolomic profiles will differ between those patients who develop CIN and those who do not after contrast administration. In addition we believe that metabolomics profiles prior to angiography may identify subjects who will go on to develop CIN and are therefore at higher risk.
Evaluation of the possible positive effect of sedative premedication prior to coronary angiography in regards to pain and anxiety.
This is a First In Man study with the aim to know the safety and effectiveness of a novel bare metal stent (INC-1) in the treatment of de novo coronary lesions in patients with stable coronary angina and unique coronary lessions.
Background: Detection of coronary artery disease (CAD) is important due to its high prevalence and its medical and economic implications. Purpose: A systematic review of the diagnostic performance of stress echocardiography (Echo), SPECT, cardiac magnetic resonance (CMR), CT Perfusion (CTP) and PET versus invasive coronary angiography (ICA) or fractional flow reserve (FFR) using hierarchical summary ROC (HSROC) methods. Data Sources: MEDLINE, EMBASE and SCOPUS for literature published in English or Spanish from January 1970 to December 2015. Study Selection: For inclusion, studies had to meet the Cochrane guidelines, had to evaluate the sensitivity and specificity methods, and use ICA and/or FFR. Only those studies with STARD methodology ≥60% were included. Data Extraction: Ten investigators extracted patient and study characteristics and 4 resolved any disagreements.
The researchers are seeking to study whether or not there is benefit in keeping patients flat after Angioseal for extended periods of time after diagnostic heart catheterization or if a more aggressive approach of early ambulation would be just as safe while improving cost and patient comfort.
GLP-1(9-36) amide and (9-37), which was previously thought to be the inactive metabolite of GLP-1, also exerts cardioprotective effects. Direct administration of GLP-1(9-36) during reperfusion reduced ischaemic damage in isolated hearts and increased cGMP release, vasodilatation and coronary flow in AMI mouse model, one may speculate that total GLP-1 level may associate with adverse cardiovascular events in AMI patients, the hypothesis is therefore tested in this study.
Hospital readmission rate following percutaneous coronary interventions (PCI) or coronary angiographies (CAG) is a main indicator of quality of care and addresses economic issues. The aim of this study is to quantify the frequency and analyse the types of rehospitalizations and repeat revascularizations during one year after a PCI or a CAG. This information is needed to organize the health care pathway and to identify preventable rehospitalizations.
Increased plasma DPP4 activity (DPP4a) could predict both subclinical and new-onset atherosclerosis, and our previous study has found that the DPP4a was significantly lower in MI patients compared with patients having chest pain or unstable angina alone, and DPP4a is associated with no-reflow and major bleeding events in STEMI patients during hospital stay. As no-reflow phenomenon and major bleeding events independently associates with a worse in-hospital and long-term prognosis. One may speculate that the DPP4a is associated with long-term follow-up adverse cardiovascular events in these patients.The hypothesis was tested in this study.