Coronary Slow Flow.
Summary of "Coronary Slow Flow."
Background: Coronary slow flow phenomenon (CSFP) is defined as delayed coronary opacification in the absence of obstructive coronary artery disease. In the present study, we sought to define its prevalence and clinical features. Methods and Results: The 1,741 consecutive patients who underwent coronary angiography (CAG) were identified. Those with normal left ventricular ejection fraction and normal coronary arteries were included in the study (n=158). TIMI frame counts were calculated, and data on demographics, comorbidities, and medication use were collected. CSFP was defined as frame count >27. Multivariate logistic regression analysis was used to identify independent predictors of CSFP. CSFP was identified in 96 (5.5%) subjects referred for CAG. Subjects with CSFP were more obese (body mass index [BMI] 33.9 vs. 29.8kg/m(2), P=0.003) and had lower high-density lipoprotein levels (39.7 vs. 45.7mg/dl, P=0.04). In the CSFP group, total cholesterol, low-density lipoprotein and frame counts increased significantly with increasing vessel involvement (1-, vs. 2-, vs. 3-vessel involvement; P<0.05 for each variable). By multivariate analysis, male sex (odds ratio 3.36, 95% confidence interval 1.17-8.61, P=0.02) and higher BMI independently predicted the presence of CSFP (odds ratio 1.09, 95% confidence interval 1.03-1.15, P=0.003). Conclusions: CSFP is associated with male sex and obesity. Multivessel involvement may be a marker of more severe, diffuse disease. Further studies are needed to investigate this hypothesis.
Section of Cardiovascular Disease, Department of Internal Medicine, University of Oklahoma Health Sciences Center and Department of Veterans Affairs Medical Center.
This article was published in the following journal.
Name: Circulation journal : official journal of the Japanese Circulation Society
The "Slow Coronary Flow" (SCF) phenomenon in the presence of angiographically normal coronaries is attributed to microvascular and endothelial dysfunction. The microcirculation can be non-invasively a...
We examined the effects of ACE, PAI-1 and eNOS gene polymorphisms on endothelial function. The genes are related to atherosclerosis and endothelial dysfunction in coronary slow flow (CSF).
Slow coronary flow (SCF) is a microvascular disorder characterized by delayed opacification of coronary vessels with normal coronary angiogram. It may be due to endothelial dysfunction and diffuse ath...
We examined the hypothesis that a specific myocardial injury marker, namely high sensitive cardiac troponin-I (HsTn-I), is elevated in patients with slow coronary flow (SCF) pattern.
-Coronary collateral flow is alternative source of myocardial perfusion in patients with totally occluded coronary arteries. Clinical evaluation of collateral flow has been limited by the need of inva...
To compare patients with Slow Coronary Artery Flow to patients with normal flow and to determine whether there is a difference in their future incidence of heart disease.
The investigators will investigate patients undergoing coronary angiography with normal coronary but slow blood flow that was normalized after adenosine injection into the coronary artery...
The aim of this study is to investigate whether the non-invasive ultrasound method for assessment of coronary blood flow, transthoracic Doppler echocardiography-coronary flow reserve (TTDE...
The investigators' rationale was to evaluate whether a 64-slice CT scanner allows accurate measurement of computed tomographic changes in coronary artery flow profiles and whether CT flow...
Chest pain, illness perception compliance and psychosocial outcome after coronary arteriography. A comparison between patients which were diagnosed with slow coronary flow and patients w...
Medical and Biotech [MESH] Definitions
Complete blockage of blood flow through one of the CORONARY ARTERIES, usually from CORONARY ATHEROSCLEROSIS.
The ratio of maximum blood flow to the MYOCARDIUM with CORONARY STENOSIS present, to the maximum equivalent blood flow without stenosis. The measurement is commonly used to verify borderline stenosis of CORONARY ARTERIES.
A disorder of cardiac function caused by insufficient blood flow to the muscle tissue of the heart. The decreased blood flow may be due to narrowing of the coronary arteries (CORONARY ARTERY DISEASE), to obstruction by a thrombus (CORONARY THROMBOSIS), or less commonly, to diffuse narrowing of arterioles and other small vessels within the heart. Severe interruption of the blood supply to the myocardial tissue may result in necrosis of cardiac muscle (MYOCARDIAL INFARCTION).
An imbalance between myocardial functional requirements and the capacity of the CORONARY VESSELS to supply sufficient blood flow. It is a form of MYOCARDIAL ISCHEMIA (insufficient blood supply to the heart muscle) caused by a decreased capacity of the coronary vessels.
A complication of INTERNAL MAMMARY-CORONARY ARTERY ANASTOMOSIS whereby an occlusion or stenosis of the proximal SUBCLAVIAN ARTERY causes a reversal of the blood flow away from the CORONARY CIRCULATION, through the grafted INTERNAL MAMMARY ARTERY (internal thoracic artery), and back to the distal subclavian distribution.