View clinical trials related to Coronary Stenosis.
Filter by:The aim of this prospective, investigator-initiated study is to evaluate the diagnostic accuracy and correlations between functional indices (fractional flow reserve, FFR) and morphometric indices: luminal and qualitative parameters assessed by optical coherence tomography (OCT) including minimal lumen area, plaque type, presence of thin cap fibroatheroma among patients with chronic coronary syndrome identified with intermediate grade coronary stenosis.
Percutaneous coronary intervention (PCI) encounters challenges with calcified coronary lesions, leading to potential issues such as failed balloon dilatation, incomplete stent expansion, and increased risks of adverse events post-PCI, including stent restenosis and thrombosis. Intravascular lithotripsy (IVL), a novel approach for severely calcified coronary lesion preparation, has shown promising preliminary outcomes. Combining IVL with conventional approaches, such as Rotational atherectomy (RA), non-compliant balloons, or cutting balloons, may associated with additional benefit than conventional approaches only in terms of better stent expansion and lower long-term adverse events. This pilot randomized trial aims to investigate whether combining IVL to conventional therapy surpasses the efficacy of conventional approaches alone. The primary effectiveness endpoint is final stent expansion assessed by post-procedure optical coherence tomography (OCT), and the primary safety endpoint is target lesion failure (TVF). The trial seeks to provide valuable insights into the optimal approach for managing severely calcified coronary lesions during PCI.
This is a prospective, observational, single-center study. The main purpose of this study is to evaluate the diagnostic accuracy of offline computational ultrasonic flow ratio (UFR) in predicting functionally significant left main (LM) coronary stenosis with conventional pressure wire-based fractional flow reserve (FFR) as the standard reference. The study will be conducted in Fuwai Hospital, and a total of 120 patients with intermediated left main coronary vessel diameter stenosis ≥30% and ≤80% are planned to be recruited. Participants who meet the inclusion criteria and do not meet the exclusion criteria will undergo intravascular ultrasound (IVUS) followed by FFR examination. IVUS imaging will be sent to an independent core laboratory for UFR calculation. UFR analyses were performed offline in a blinded fashion without awareness of FFR measurement. Using FFR≤0.80 as the gold standard, the sensitivity and specificity of UFR in the functional significance of left main coronary artery stenosis will be analyzed.
Flavonoids are one of the main groups of polyphenols. Anthocyanins, which are a subgroup of the flavonoid family, are found in a number of fruits and some vegetables. In epidemiological studies, high dietary intake of polyphenols has been associated with improvement of some cardiometabolic risk factors in high-risk individuals. Furthermore, in controlled studies, consumption of polyphenol-rich food sources or anthocyanin extract supplementation has improved some cardiometabolic factors. In the present study, the effect of diet enriched with anthocyanin-rich food sources on cardiometabolic factors will be studied in coronary artery disease patients.
The HYUMC registry is a two-center, real-world registry of percutaneous coronary intervention in patients with coronary artery disease. From January 2012, PCI-treated patients from Hanyang University Seoul Hospitals and Hanyang University Guri Hospitals were enrolled in this registry. The aim of this registry is to examine the long-term clinical outcomes and identify predictors of adverse outcomes following percutaneous coronary intervention conducted at academic hospitals.
This is a self-controlled cohort study to evaluate the efficacy and safety of comprehensive treatment in patients with inflammation-associated rapidly-progressive coronary artery disease (IR-CAD) by comparing the study endpoints before treatment with those after treatment in the same group of patients.
Prospective, randomised, open-label, international multicenter trial to evaluate the safety and efficacy of drug-coated balloon (DCB) treatment compared to drug-eluting stenting (DES) in patients with large coronary artery disease.
A pragmatic, prospective, multi-center, open label, randomized controlled, superiority trial. The study will compare clinical outcomes between invasive versus non-invasive approach as next diagnostic step in symptomatic patients with non-high risk obstructive coronary artery disease (CAD) on coronary computed tomography-angiography (CCTA).
Authors hypothesize that "no-touch" saphenous vein as I graft is superior over conventional "no-touch" saphenous vein as free graft in the incidence of graft patency.
To establish if the cardiac radiation dose assesment is well aproximated with routine 3D CT scan compared to 4D CT experimental scan with respiratory gating (breath motion monitoring). The study population relates to left side breast cancers female patients that require a radiation therapy treatment.