descending aorta

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de·scend·ing aorta

The part of the aorta that extends from the aortic arch into the thorax and abdomen.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.descending aorta - the descending part of the aorta that branches into the thoracic and abdominal aortaedescending aorta - the descending part of the aorta that branches into the thoracic and abdominal aortae
aorta - the large trunk artery that carries blood from the left ventricle of the heart to branch arteries
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References in periodicals archive ?
Thoracic stent-graft (Ankura, Lifetech Scientific) was then released where its distal end terminates in the descending aorta, and then atrium covered stent was opened and inserted.
As previously reported the intimal tear of the descending aorta at the level of the mid-thoracic spine bled into the posterior mediastinum and crossed the midline to rupture into the right pleural space.
Blood loss takes minutes to take effect unless you happen to directly hit the heart or a select few big arteries (such as the femoral arteries, descending aorta or the aortic arch) or one of the internal organs, which can result in faster blood loss.
Hypoplastic Transverse aortic arch (TAA) was termed hypoplastic if ratio of TAA (mm) and descending aorta at the level of the diaphragm (mm) is <0.6.
Descending thoracic aneurysms may involve one or more aortic segments (aortic root, ascending aorta, arch or descending aorta), whereas TAAAs will extend through the diaphragm (2).
Aorta ROI (Figure 1b), and mediastinal BP ROI (Figure 1c), were acquired at the upper part of the descending aorta just below the arch where the descending aorta has a continuous circular wall.
The inner diameters of the transverse arch and descending aorta were about 7.0 mm and 12.0 mm from the isthmus, respectively, the inner diameter of the tube was about 5.0 mm, and the flow rate was 207 cm/s, and the pressure difference was 28 mmHg.
Among the 161 cases in the present study, aorta was injured in 26 (16.1%) cases, of which 16 (9.9%) cases showed involvement of ascending aorta, in 4 (2.5%) cases descending aorta was involved and in 6 (3.7%) cases the arch of aorta was involved.
Compression of the left atrium and ventricle due to 10x11.5 cm descending aorta, including the graft material and the thrombosed pseudolumen, was observed in the computed tomography images (Figure 2a, 2b).
Similarly, intimal flaps can also be seen in the descending aorta during aortic balloon angioplasty performed for aortic coarctation.
Dissection involving the aortic arch and ascending aorta are generally considered life-threatening requiring immediate surgical intervention while dissection distal to the right brachiocephalic artery and descending aorta can be managed medically.