Papillary muscle rupture usually occurs as a catastrophic complication of acute myocardial infarction in patients with coronary artery stenosis; it is therefore less common in patients without coronary artery stenosis. We report the case of a 67-year old woman without coronary artery stenosis who suffered an acute anterolateral papillary muscle rupture and was successfully treated with mitral v...

Coronary computed tomographic angiography (cCTA) has emerged in recent years as a noninvasive modality to evaluate coronary artery disease. Many studies have revealed the excellent diagnostic accuracy of cCTA when compared with invasive coronary angiography (ICA) or intravascular ultrasound (IVUS). It is generally accepted that the functional significance of coronary artery stenosis is importan...

INTRODUCTION The severity of coronary artery stenosis which leads to myocardial infarction (MI) has been a matter of controversy. Historical data are in favor of mild luminal stenosis (<50% diameter stenosis) while recent studies suggest hemodynamically-significant coronary stenosis as the main substrate for subsequent MI. Also, mechanical stress resulted from coronary artery movement (CAM) may...

Aortic valve stenosis is the most common form of valvular heart disease in the elderly population and occurs frequently in conjunction with coronary artery disease. The standard treatment option for patients with these two conditions has been surgical aortic valve replacement and coronary artery bypass grafting. The arrival of transcatheter aortic valve replacement has considerably shifted the ...

The response of right ventricular ejection fraction (RVEF) during exercise and its relationship to the location and extent of coronary artery disease are not fully understood. We have recently developed and validated a new method for scintigraphic evaluation of RVEF using rapid multiple-gated equilibrium scintigraphy and multiple right ventricular regions of interest. The technique has been app...

A mechanical model of a branched coronary artery with a graft bypassing an 80% stenosis of one branch was used to study the reduction in coronary flow due to stenosis of the bypass graft. Flow Reynolds number and ratio of aortic pressure to dynamic pressure were matched to the living system. Changes in coronary flow were measured for a range of stenoses (0-100%) of bypass grafts with graft-to-c...

Coronary artery disease has been the utmost mutual heart in past decades. Various research is going on to prevent this disease. Obstructive CAD occurs when one or more of coronary arteries which supply blood myocardium are narrowed owing plaque build-up arteries’ inner walls, causing stenosis. The fundamental task required for interpretation angiography identification and quantification severit...

Coronary artery anomalies include the anomalies of origin, termination, and structure or course. Coronary artery fistulas (CAFs) are classified as the anomalies of termination and are considered a major congenital anomaly and are in the subgroup of acyanotic heart disease.1 • Atrial septal defect • Ventricular septal defect • Patent ductus arteriosus • Aortic stenosis • Pulmonary stenosis • Par...

Left main coronary artery disease (i.e., greater than or equal to 50% stenosis) was found in 1,477 of 20,137 patients in the Coronary Artery Surgery Study (CAS) registry. Of these patients, 53 (3.6%) were asymptomatic. Asymptomatic and symptomatic patients were similar in regard to 1) severity of left main coronary artery stenosis (67% vs. 70%), 2) extent of proximal coronary artery disease (no...

Stenosis of the subclavian artery, before the left internal mammary artery branch, is an important problem for patients who have undergone coronary artery bypass grafting, with an incidence rate of 0.5-1.1%. In this paper, a case of left subclavian artery stenosis, which developed after coronary artery bypass surgery and led to recurrent anginal attacks in the patient, is presented.