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In the coronary circulation, the posterior descending artery (PDA), also called the posterior interventricular artery (PIV, PIA, or PIVA), is an artery running in the posterior interventricular sulcus to the apex of the heart where it meets with the left anterior descending artery also known as the anterior interventricular artery. The PDA ...
The left anterior descending artery perfuses the interventricular septum and anterior wall of the left ventricle. The left circumflex artery perfuses the left ventricular free wall. In approximately 33% of individuals, the left coronary artery gives rise to the posterior descending artery [4] which perfuses the
The artery that supplies the posterior third of the interventricular septum – the posterior descending artery (PDA) [3] determines the coronary dominance. [4] If the posterior descending artery is supplied by the right coronary artery (RCA), then the coronary circulation can be classified as "right-dominant."
The right coronary artery supplies oxygenated blood to the right atrium, the right ventricle, and the posterior third and inferior end of the interventricular septum. [2] [5] It may also supply 25% to 35% of the left ventricle (LV). [10] There is significant overlap of supply of the coronary arteries. [2]
The circumflex artery supplies the posterolateral left ventricle and the anterolateral papillary muscle. It also supplies the sinoatrial nodal artery in 38% of people. It supplies 15–25% of the left ventricle in right-dominant systems. If the coronary anatomy is left-dominant, the circumflex artery supplies 40–50% of the left ventricle.
distal posterolateral branch from the right coronary artery in around 2%. [1] distal right coronary artery in around 10%. [1] right posterior interventricular artery in around 7%. [1] distal circumflex branch of left coronary artery in around 4%. [1] The right coronary artery supplies the atrioventricular node in around 90% of people. [1] [2]
The right marginal branch is the largest branch to split off from the right coronary artery. [1] [2] It often anastomoses with the nearby parallel posterior interventricular artery, which itself is usually a continuation of the right coronary artery. [3]
2) the LCx supplies the posterolateral left ventricular free wall; 3) the RCA supplies the right ventricular free wall; In fact, despite a certain degree of variability in coronary artery anatomy among individuals, there is greater consistency in the regions of the heart that are supplied by the different coronary arteries. [citation needed]