Clinical Research Directory

Comprehensive Invasive Physiological Evaluation of Obstructive Coronary Artery Disease

The goal of this clinical trial is to test whether adding coronary function testing and starting targeted medical treatment for identified vasomotor disorders will also improve angina symptoms and quality of life in patients with obstructive coronary artery disease who undergo percutaneous coronary intervention. The main question it aims to answer is: Does performing coronary function testing in patients with obstructive coronary artery disease who undergo percutaneous coronary intervention lead to better relieve of angina symptoms and improvement in quality of life? Researchers will compare this group undergoing coronary function testing with a control group who will solely undergo percutaneous coronary intervention. Participants will: * Undergo percutaneous coronary intervention and coronary function testing in the intervention arm * Undergo percutaneous coronary intervention in the control arm

TTE Improves Clinical Management of Stable Chest Pain

The investigator aims to prospectively enroll patients who were referred for transthorcic echocardiography (TTE) for the assessment of stable chest pain (SCP) suspected of obstructive coronary artery disease (CAD). All patients underwent TTE according to established guidelines and local institutional protocols. This study will determine if TTE-based imaging evaluation can provide more informaton to improve clinical management for SCP, including fewer MACE and better decision-making of downstream investigations and therapeutic interventions.

The Effects of Tirzepatide in People With Overweight/Obesity and Coronary Artery Disease

The objective of this study is to investigate, as a proof-of-principle, long-term (52 weeks) effects of tirzepatide once-weekly vs. placebo on changes in coronary plaque composition and progression (assessed by NIRS), plaque burden (assessed by IVUS) and microvascular function (assessed by invasively measured CFR) in overweight and obese individuals with stable coronary artery disease (CAD). In addition, the objective of a baseline cross-sectional sub-study is to explore potential metabolic and cardiovascular (CV) predictors for high arteriosclerotic plaque burden in overweight and obese individuals and to establish a cohort for future research projects.

A Multi-center, Real-World Clinical Trial of caIMR on Two Specific Kinds of Patients.

The coronary angiography-derived index of microcirculatory resistance (caIMR) can be used to provide a binary assessment whether patients（with stable angina, unstable angina, suspected myocardial ischemia, or coronary artery stenosis of less than 50%, and without cardiomyopathy or obstructive epicardial coronary artery disease） have microcirculatory dysfunction, using a cutoff value of 25. This study aims to evaluate the binary classification performance of caIMR in two specific groups of patients: (1) those with caIMR values between 20 and 30, and (2) those with diffuse disease. We will do this by looking at differences in their Seattle Angina Questionnaire (SAQ) scores and their health outcomes over a three-year period.

Efficacy and Safety of Aspirin in Patients With Chronic Coronary Syndromes Without Revascularization

The purpose of this study is to evaluate the efficacy and safety aspirin in patients with chronic coronary syndromes without revascularization.