The ascending aorta (AAo) [1] is a portion of the aorta commencing at the upper part of the base of the left ventricle, on a level with the lower border of the third costal cartilage behind the left half of the sternum.

Oct 30, 2023 · The ascending aorta is the first segment of the aorta as it emerges from the base of the left ventricle. At its origin at the aortic orifice is the aortic semilunar valve, which separates the ascending aorta from the left ventricle.

升主动脉（Aorta ascendens）为主动脉与左心室交接的部分，始于第三肋间软骨下缘，并沿胸骨左半边上行。 升主动脉有 左冠状动脉 和 右冠状动脉 （ 英语 ： right coronary artery ） 两分支，供应心脏养分，之后主干会接至 主动脉弓 。

The ascending aorta is the first section of your aorta, the largest blood vessel in your body. It’s attached to your heart and plays an essential role in helping your heart deliver oxygen-rich blood to your entire body. Problems in the ascending aorta, …

升主動脈（Aorta ascendens）為主動脈與左心室交接的部分，始於第三肋間軟骨下緣，並沿胸骨左半邊上行。 升主動脈有 左冠狀動脈 和 右冠狀動脈 （ 英语 ： right coronary artery ） 兩分支，供應心臟養分，之後主幹會接至 主動脈弓 。

Mar 20, 2024 · The ascending aorta is the first part of the aorta and begins at the sinotubular junction (the junction of the aortic root and ascending aorta) and terminates as it exits the fibrous pericardium where it becomes the aortic arch, in the transthoracic plane (of Ludwig).

The ascending aorta is considered dilated or ectatic when its size is 1.1 to 1.5 times larger than the normal and aneurismal when its size exceeds the limits defining dilatation (3,4). The diameter of the ascending aorta, typically measured at the level of the right pulmonary artery, is used to define the dimensions of the AA.

Jan 13, 2025 · Dilatation of the ascending aorta is a common finding in the elderly but unusual in younger patients. In adults, an ascending aortic diameter greater than 4 cm is considered to indicate dilatation 4.

Oct 30, 2023 · Most common one, and the one we will use in this article, is the classification of the aorta into three parts; the ascending aorta, aortic arch and the descending aorta. The descending aorta is the longest part, further subdivided into thoracic and abdominal aorta, with the diaphragm being the anatomical division between the two.

The ascending aorta is the initial component of the aorta and thus is under considerable pressure during ventricular systole; therefore, it has a thick muscular wall and a high elastin content. Near its origin, the ascending aorta gives off two branches, the right and left coronary arteries, which provide the arterial supply to the heart.