View clinical trials related to Angina Pectoris.
Filter by:The goal of this observational study is to find out if artificial intelligence (AI) can accurately predict acute coronary syndrome (ACS) using data on white blood cells in adults. The main question it aims to answer is: - Can AI algorithms based on white blood cell data predict ACS with accuracy comparable to that of high-sensitivity cardiac troponin (hs-cTn)? Researchers will look at how the AI model's predictions stack up against the standard hs-cTn blood tests to see which is more accurate in diagnosing ACS. Participants in this study will have already had blood tests as part of their usual care. Their previously collected health information and blood test results will be used to help train and test the AI algorithms. Participants will not undergo any new procedures for the study itself.
The purpose of this study is to assess in recently diagnosed stable Angina patients symptomatic despite first line hemodynamic therapy, the effect of a combination of this hemodynamic agent with a metabolic one (trimetazidine). The treatment effect will be measured by the reduction of patients' angina symptoms, physical limitation and an improvement of quality of life using the Seattle Angina Questionnaire-7 items (SAQ-7) Patients will be also proposed to complete a BEAMER (BEhavioral and Adherence Model for improving quality, health outcomes and cost-Effectiveness of healthcaRe) questionnaire which will contribute to a separate research project developed by the Innovative Medicines Initiative (IMI). Analysis of the BEAMER questionnaires will be performed outside the study by the IMI BEAMER Consortium for BEAMER purposes only.
The increasing number of coronary revascularization procedures, coupled with improvements in drug therapy, has significantly extended the lifespan of patients with coronary artery disease (CAD). However, there remains a significant number of CAD patients who experience disability due to chronic refractory angina pectoris. These patients typically have severe diffuse CAD and are not candidates for further revascularization involving surgical coronary artery bypass grafting (CABG) or percutaneous coronary intervention (PCI). The installation of a coronary sinus reducer (CSR) represents a new option for percutaneous treatment of patients with refractory angina pectoris who are not suitable for surgical or percutaneous revascularization. The CSR device is designed as an hourglass-shaped stent that is positioned transcatheterally in the distal part of the coronary sinus. This increases intramyocardial venous pressure, which is believed to lead to a more favorable perfusion ratio between the ischemic subendocardial and non-ischemic subepicardial myocardium. Previous research has demonstrated that the implantation of CSR is a safe and relatively straightforward procedure. However, broader implementation and better patient selection are still limited by the fact that the exact mechanism of action remains controversial. It has not been determined why some patients have better outcomes compared to others with seemingly similar coronary artery disease. It is known that patients with atherosclerotic changes in the epicardial coronary arteries also have a certain degree of coronary microcirculation disease (the coronary vascular bed encompassing vessels with a diameter < 200 μm), which cannot be assessed through standard coronary angiography. This study aims to assess changes in coronary microcirculation after the implantation of CSR by measuring coronary flow reserve (CFR) and index of microcirculatory resistance (IMR) before and 6 months after the procedure. Furthermore, our goal is to associate these changes with clinical symptoms and myocardial ischemia.
Distal radial access (DRA) in the anatomical snuffbox (AS) is a relatively novel approach that can be considered an alternative to trans radial access (TRA) for coronary procedures. Several observational and randomized studies have established its feasibility and safety, with evidence of certain advantages over TRA, such as a reduction in hemostasis time, a lower incidence of complications at the puncture site, and a lower incidence of radial artery occlusion (RAO). Notwithstanding that a recent randomized study reported a similar RAO rate between DRA and TRA, several meta-analyzes confirm the advantages of DRA, despite a consistently higher crossover rate. The objective of this observational study is to assess the performance of the procedure and to compare clinical characteristics in an all-comer population undergoing diagnostic or interventional coronary procedures. The main questions it aims to answer are: - Determine the success rate of DRA and measure the incidence of RAO in an all-comer population undergoing coronary procedures. - Compare the clinical and anatomical characteristics of patients with DRA for coronary procedures and determine predictors of failure of access.
Coronary computed tomography angiography (CCTA) is a widely accepted initial diagnostic test for individuals suspected of having chronic coronary syndromes. However, there is limited evidence supporting its use in the acute setting. So far, no large-scale randomized trial has examined the performance of CCTA as an alternative to invasive coronary angiography (ICA) in individuals with non-ST-segment elevation myocardial infarction (NSTEACS). If CCTA were to replace ICA as a routine procedure for individuals with NSTEACS, it could reduce the risk of complications related to ICA, improve patient comfort, expedite decision-making, and reduce healthcare expenses and interhospital transfers.
Coronary microvascular disease (MVD) refers to exertional angina or myocardial ischemia caused by abnormal structure and/or function of precoronary arterioles and arterioles under the action of various pathogenic factors. The symptoms of patients with coronary microvascular disease are mainly exertion-related chest pain episodes. The basic and clinical researches of the traditional Chinese medicine compound Danshen dropping pills have found that it can improve vascular endothelial function and relieve angina pectoris, and it is widely used in clinical practice. This is a randomized, double-blind, placebo-controlled, multicenter clinical study of Compound Danshen Dropping Pills and blank control in patients with microvascular angina pectoris. The experimental drug and control drug of this clinical trial were selected according to the ratio of 1:1 patients were enrolled in the pre-experiment. After the selected patients signed the informed consent, they were divided into a compound Danshen dripping pill treatment group and a placebo group according to a random, double-blind, placebo-controlled method. Dosage of Compound Danshen Dropping Pills or placebo: 20 capsules each time, 3 times a day, for a total of 6 months. Follow-up was performed every 2 months for a total of 6 months. Primary study endpoints is the difference of the left anterior descending coronary flow reserve (CFR) measured by ultrasound between the two groups compared with the baseline. Secondary study endpoint include the Number of angina attacks per week, the time of angina pectoris and the time of ischemic ST segment depression in exercise test.
The purpose of the COMPLEX Registry is to prospectively and retrospectively collect baseline, clinical and procedural data of patients who have undergone PCI or CABG for complex and/ or calcified chronic CAD, irrespective of clinical presentation as well as to prospectively collect data about their clinical outcomes. The outcomes will be compared in different clinical subgroups (e.g. PCI vs. CABG). The impact of current PCI techniques/ devices, but also CABG strategies in different clinical settings and coronary artery lesions on cardiovascular outcomes will be assessed.
To establish the effectiveness and tolerability of standard of care anti-anginal treatment (beta-blocker and calcium channel blocker medications) in older adults with symptomatic Stable Ischemic Heart Disease (SIHD) and multiple chronic conditions (MCC).
The aim of the present study will be to identify different phenotypes of microvascular dysfunction and their associations with the severity of anginal symptoms assessed through the Seattle Angina Questionnaire(SAQ-7).
The goal of this clinical trial is to assess the feasibility and clinical value of acetylcholine (ACH) rechallenge after intracoronary verapamil +- nitroglycerine in a patient cohort with angina and non-obstructive coronary arteries (ANOCA). The main questions it aims to answer are: - to determine the efficacy of these drugs in treating ACH-induced coronary artery spasm - to determine the efficacy of these drugs in preventing ACH-induced coronary artery spasm The ACH rechallenge will take place during the index coronary function tests in patients with proven ACH-induced vasospastic angina. The study is considered a feasibility study, no control arm is included.