What is Codominance in coronary artery?
A coronary artery is said to have a “co-dominance” or balanced dominance when only the right posterior descending artery (RD or RPDA) arises from the right coronary artery (RCA), while the circumflex inferior artery (CI) and the circumflex posterior artery (CP) arise from the circumflex artery (CX).
What does codominant circulation mean?
In a codominant circulation, supply of the posterior interventricular septum is shared by the RCA and LCX. The prevalence of left dominance is ≈8%, whereas codominance has ≈7% population prevalence. 1. Left and codominance are generally considered to be normal variants with no particular prognostic significance.
What is circumflex artery?
The circumflex artery branches off the left coronary artery and encircles the heart muscle. This artery supplies blood to the outer side and back of the heart.
What is non dominant right coronary artery?
Non-dominant RCA is small in diameter and supplies right atrium (RA), right ventricle (RV) and sino- atrial (SA) node. Although a significant atherosclerotic disease of NDRCA in the absence of significant left coronary artery disease is rare, isolated occlusion of NDRCA has been described in past.
What does the left circumflex artery supply?
The circumflex artery is responsible for blood supply to the left atrium and the posterior-lateral aspect of the left ventricle while the LAD supplies blood to the anterior portion of the left ventricle.
Which artery is the most critical branch of the left main coronary artery?
The LAD typically supplies 45–55% of the left ventricle (LV) and is therefore considered the most critical vessel in terms of myocardial blood supply.
What is the function of the circumflex artery?
Is the circumflex artery a main artery?
The circumflex artery (Cx) is one of the two major coronary arteries that arise from the bifurcation of the left main coronary artery (the other branch being the left anterior descending (LAD) artery).
What is meant by dominant artery?
In cardiology, the coronary artery that supplies the posterior descending artery (PDA) of the heart.
What happens if the left circumflex artery is blocked?
When occluded, the circumflex coronary artery can cause a lateral myocardial infarction resulting in ST elevation in the lateral leads. The lateral ECG leads are considered lead V5-V6 and the “high lateral” ECG leads are lead I and aVL.
Which artery is known as the Widowmaker?
A widowmaker is an informal term for a heart attack that involves 100 percent blockage in the left anterior descending (LAD) artery, says Stanley Chetcuti, M.D., an interventional cardiologist at the University of Michigan Frankel Cardiovascular Center.
Why is it called the Widowmaker artery?
It’s also sometimes referred to as a chronic total obstruction (CTO). The LAD artery carries fresh blood into the heart so that the heart gets the oxygen it needs to pump properly. If it’s blocked, the heart can stop very fast — which is why this type of heart attack is called a “widowmaker.”