vastregister.blogg.se

The diameter of the descending aorta should not exceed 25 mm.

By the time it becomes the ascending aorta, the diameter should be < 35–38 mm, and 30 mm at the arch. Blood flows from the upper curvature to the upper regions of the body, located above the heart - namely the arms, neck, and head.Ĭoming out of the heart, the thoracic aorta has a maximum dimension of 40 mm at the root. Vascular ring is a type of congenital heart disease where abnormalities of the aortic arch or rarely, the pulmonary artery (PA), result in respiratory. below the superior border to the manubrium sterni. Its upper border is usually about 2.5 cm. The arch of the aorta forms two curvatures: one with its convexity upward, the other with its convexity forward and to the left. An anatomical variation is that the left vertebral artery can arise from the aortic arch instead of the left subclavian artery. Finally, the left subclavian artery comes off of the aortic arch to the left of the left common carotid artery and ascends, with the left common carotid, through the superior mediastinum and along the left side of the trachea. Next, the left common carotid artery originates from the aortic arch to the left of the brachiocephalic trunk, then ascends along the left side of the trachea and through the superior mediastinum. The first, and largest, branch of the arch of the aorta is the brachiocephalic trunk, which is to the right and slightly anterior to the other two branches and originates behind the manubrium of the sternum. It begins at the level of the upper border of the second sternocostal articulation of the right side, and runs at first upward, backward, and to the left in front of the trachea then travels backward on the left side of the trachea and finally passes downward on the left side of the body of the fourth thoracic vertebra.At this point the aortic arch continues as the descending aorta. The arch travels backward, so that it ultimately runs to the left of the trachea. The aortic arch (arch of the aorta transverse aortic arch) is the part of the aorta between the ascending and descending aorta.