Coronary arteries

Coronary arteries

The two main arteries that provide blood to the heart. The coronary arteries surround the heart like a crown, coming out of the aorta, arching down over the top of the heart, and dividing into two branches. These are the arteries where coronary artery disease occurs.

Mentioned in: Atherectomy, Coronary Artery Disease, Heart Attack, Heart Failure, Stress Test

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coronary

encircling in the manner of a crown.

1. a term applied to vessels, ligaments, nerves, the band at the skin-hoof junction.

2. blood vessels partially encircling the heart.

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coronary arteries

two large arteries that branch from the ascending aorta and supply all of the heart muscle with blood. See also Table 9.

coronary artery anomaly

one or both arteries originate from the pulmonary artery instead of the aorta; anoxia of the myocardium leads to congestive heart failure.

coronary artery laceration

in foals during a difficult parturition and in cattle due to penetration by a reticular foreign body; sudden death due to cardiac tamponade.

coronary artery rupture

can result from perforation by a foreign body from the reticulum as part of the syndrome of traumatic reticular pericarditis. Cardiac tamponade results, causing acute or congestive heart failure.

coronary band

the junction of the skin and the horn of the hoof.

coronary chemoreflex

intravenous injection of chemicals such as veratridine causes cardiac slowing, hypotension and apnea due to reflex response by the myocardium. Called also Bezold-Jarisch reflex.

coronary cushion

the spongy, resilient hypodermis beneath the coronary corium of the hoof.

coronary emboli

lodgment of an embolus in a coronary artery is a rare occurrence in animals. Myocardial ischemia and asthenia result, the effect on the animal varying with the amount of muscle compromised.

coronary occlusion

the occlusion, or closing off, of a coronary artery. The occlusion may result from formation of a clot (thrombosis). Narrowing of the lumen of the blood vessels by the plaques of atherosclerosis, as occurs in humans, does not occur in animals. If there is adequate collateral circulation to the heart muscle at the time of the occlusion, there may be little or no damage to the myocardial cells. When occlusion is complete, however, with no blood being supplied to an area of the myocardium, myocardial infarction results.

coronary perfusion pressure

the difference between aortic diastolic and right atrial diastolic pressure; a determinant of the blood flow to cardiac muscle.

coronary thrombosis

formation of a clot in a coronary artery. See also myocardial infarction.

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Patient discussion about Coronary arteries.

Q. my mother have stem replacement for a coronary artery oclusion is already 2 years she physically deteriorating since surgery why???? please help she does not have energy

A. I agree with Dagmar. It can be most likely caused by another occlusion or re-occlusion inside the heart blood vessels. Since that is a life-threatening case, I strongly suggest you to bring your mother into a hospital (for complete check up), or just call your cardiologist to have first treatment.

Meanwhile, that will be better if you have emergency oxygen (just in case you'll need it) with you.