coronary circulation

(redirected from Coronary anatomy)
Also found in: Encyclopedia.
Enlarge picture
CIRCULATION OF BLOOD THROUGH HEART AND MAJOR VESSELS

coronary circulation

Movement of blood through the vessels of the heart, specifically from the ascending aorta to the epicardial coronary arteries to the penetrating arteries of the myocardium, the coronary arterioles, capillaries, veins, coronary sinus, and into the right atrium. A few of the small veins open directly into the atria and ventricles.
See: illustration
See also: circulation

circulation

movement in a regular or circuitous course, returning to the point of origin, as the circulation of the blood through the heart and blood vessels. See also circulatory system.

antegrade circulation
circulation in the normal direction of flow.
artificial circulation
is maintained in cardiopulmonary arrest by cardiac compression.
collateral circulation
circulation carried on through secondary channels after obstruction of the principal channel supplying the part.
coronary circulation
that within the coronary vessels, which supply the muscle of the heart.
cutaneous circulation
cutaneous vessels are innervated by sympathetic adrenergic vasoconstrictor fibers; vasodilation is an important mechanism for losing heat after the body has been warmed.
enterohepatic circulation
the cycle in which bile salts and other substances excreted by the liver in the bile are absorbed by the intestinal mucosa and returned to the liver via the portal circulation.
extracorporeal circulation
circulation of blood outside the body, as through a hemodialyzer or an extracorporeal circulatory support unit.
fetal circulation
circulation of blood through the body of the fetus and to and from the placenta through the umbilical cord. See also fetal circulation.
hepatic circulation
includes the hepatic arterial blood supply and the supply from the portal vein; drainage is via the hepatic veins to the caudal vena cava.
lymph circulation
see lymph.
maternal circulation
the circulation of the dam during pregnancy, including especially that of the uterus.
micro-circulation
neonatal circulation
circulation in the newborn immediately after birth; the umbilical vessels contract forcing blood into the fetal veins; the foramen ovale closes, the ductus arteriosus narrows and eventually closes at day 1 to 2 after birth.
ocular circulation
consists of the uveal and retinal blood vessels supported by the aqueous humor and vitreous body.
placental circulation
consists of the umbilical arteries, the vessels of the placenta proper and the umbilical veins; approximates the fetal corporeal circulation in volume.
portal circulation
a general term denoting the circulation of blood through larger vessels from the capillaries of one organ to those of another; applied especially to the passage of blood from the gastrointestinal tract, pancreas and spleen through the portal vein to the liver.
pulmonary circulation
the flow of blood from the right ventricle through the pulmonary artery to the lungs, where carbon dioxide is exchanged for oxygen, and back through the pulmonary vein to the left atrium. See also pulmonary circulation.
splenic circulation
flow of blood through the splenic artery and arterioles to either the capillaries, e. g. white pulp, or the highly permeable sinuses of the red pulp. Splenic venous blood drains into the portal vein and passes through the liver before re-entering the general circulation.
systemic circulation
the flow of blood from the left ventricle through the aorta, carrying oxygen and nutrient material to all the tissues of the body, and returning through the superior and inferior venae cavae to the right atrium.
circulation time
the time required for blood to flow between two given points. It is determined by injecting a substance into a vein and then measuring the time required for it to reach a specific site.
References in periodicals archive ?
Prof Curzen said: "This study demonstrates that the non-invasive FFRCT analysis from a standard coronary CT scan has the potential to become the default method for the initial assessment of many patients with cardiacsounding chest pain by assessing both the coronary anatomy and physiology simultaneously.
Member of Iran's Inventors Association noted angiography as one of the diagnostic procedures in the field of cardiovascular diseases and said by this procedure it was possible to assess coronary anatomy and subsequently detect the lesion location and the appropriate treatment.
When using a noncompliant balloon, deliverability and re-cross are important characteristics, especially when faced with challenging coronary anatomy," said Robert Gerber, F.
If the patient had typical symptoms, the clinical suspicion was high and there were risk factors, the conventional - and clinically prudent - route to take would have been an imminent invasive coronary angiography with possible ad hoc or staged percutaneous or surgical revascularization as warranted by the coronary anatomy.
The impact of the changes to the stent delivery system is particularly notable in patients with complex coronary anatomy.
This is because angiography provides a 2-dimensional depiction of coronary anatomy and relies on a limited number of imaging planes, in contrast to cardiac computed tomography (CCT), which is noninvasive and has multiplanar capability.
This similar presentation hints at genetic factors not only playing a role in the development of coronary anatomy, but also, on a more subtle level, predisposing them to both atrial fibrillation and cardiomyopathy.
A final section looks at the concurrent noninvasive assessment of coronary anatomy, physiology, and myocellular integrity.
1) Effient and clopidogrel were not administered to patients with UA/NSTEMI until coronary anatomy was established.
These results reinforce the one-year SYNTAX data and show impressive outcomes for PCI in patients with complex coronary anatomy, the majority of whom are normally treated with CABG surgery," said Keith D.
For example, data on the coronary anatomy were available for only 54% of the early group, compared with 93% of the current group, a statistically significant difference.