What is dominant circulation?

What is dominant circulation?

A: “Dominance” is defined in terms of which coronary artery supplies the posterior descending artery (PDA), which travels along the inferior interventricular groove from the crux of the heart to the apex, as well as the posterior left ventricular braches. Q: How common is a left-dominant coronary circulation?

How do you determine your dominant heart?

Heart “dominance” is determined by which of the initial coronary arteries supplies the PDA which, in turn, supplies the AV node. The heart is right dominant (85%) if the PDA is supplied by the RCA. The heart is left dominant (7.5%) if the PDA is supplied by the circumflex branch of the LCA.

What does dominance mean when referring to the right and left coronary arteries?

Definition/Introduction Heart dominance is described by which coronary artery branch gives off the posterior descending artery and supplies the inferior wall, and is characterized as left, right, or codominant.

What happens if RCA is blocked?

If the blockage occurs more slowly, the heart muscle may develop small collateral blood vessels (or detours) for other coronary arteries to reroute the blood flow, and angina occurs.

What does it mean to be right heart dominance?

Coronary arterial dominance is defined by the vessel which gives rise to the posterior descending artery (PDA), which supplies the myocardium of the inferior third of the interventricular septum. Most hearts (80-85%) are right dominant where the PDA is supplied by the right coronary artery (RCA).

Which heart dominance is most common?

Most hearts are right dominant (60%) where the PDA is supplied by the RCA. However, up to 20% of hearts may be left dominant, where the PDA is supplied by the LAD or LCx, or codominant, where a single or duplicated PDA is supplied by branches of both the RCA and LAD/LCx (20%).

Why is left dominant heart bad?

A left dominant coronary artery system is associated with a significantly increased risk of 30-day mortality and early reinfarction after STEMI.

Which is the dominant artery?

Which is the dominant artery in the heart?

Coronary arterial dominance is defined by the vessel which gives rise to the posterior descending artery (PDA), which supplies the myocardium of the inferior third of the interventricular septum. Most hearts (80-85%) are right dominant where the PDA is supplied by the right coronary artery (RCA).

When does a coronary artery have a co-dominance?

Co-Dominance. 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).

Where is the circulation of blood located in the heart?

Coronary circulation is the circulation of blood in the blood vessels that supply the heart muscle (myocardium).

Is the posterior descending artery left or right dominant?

If the posterior descending artery is supplied by both the right coronary artery and the circumflex artery, then the coronary circulation can be classified as “co-dominant”. Approximately 70% of the general population are right-dominant, 20% are co-dominant, and 10% are left-dominant.