descending aorta

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de·scend·ing a·or·ta

the part of the aorta continuing distal (inferior) to the aortic arch, further divided into the thoracic aorta and the abdominal aorta.

descending aorta

The part of the aorta that extends from the aortic arch into the thorax and abdomen.

descending aorta

Etymology: L, descendere, to descend; Gk, aerein, to raise
the main portion of the aorta, consisting of the thoracic aorta and the abdominal aorta, which continues from the aortic arch into the trunk of the body. It supplies many structures, including the esophagus, lymph glands, ribs, stomach, liver, spleen, intestines, kidneys, reproductive organs, and, eventually, the lower limbs. See also aorta.


pl. aortae, aortas [L.] the great artery arising from the left ventricle, being the main trunk from which the systemic arterial system proceeds. See Table 9. See also aortic.

abdominal aorta
the part of the descending aorta within the abdomen.
ascending aorta
the first part of the aorta which passes dorsally and cranially.
descending aorta
the aorta after it turns caudally at the aortic arch.
overriding aorta
see overriding aorta.
supravalvular aorta
the portion of aorta immediately above the aortic valve.
terminal aorta
the segment of the aorta immediately before it divides into the iliac arteries.
thoracic aorta
the part of the descending aorta within the thorax.
References in periodicals archive ?
Filling of the descending aorta was entirely from the extensive collaterals from the neck, upper and lower extremity and intercostal vessels.
Furthermore, anatomical grouping of more levels was operated for compartmental comparison of the median of quantitative parameters, as follow: a) thoracic aorta, including from aortic valve to descending aorta (levels 1, 2, and 3 of quantitative analysis); b) abdominal aorta, including diaphragmatic aorta and aorta at the level of renal arteries origin (levels 4 and 5 of quantitative analysis).
The sheath was finally placed in the descending aorta about few centimeters down the site of PDA.
Left atrium and ventricle, pulmonary veins, left ventricular outflow, superimposed left and right brachiocephalic trunks, aortic root, and descending aorta are opacified with contrast.
The first is distal embolization during the procedure since there were lots of mural thrombi found on CT scan, and the second is ischemia resulting from interruption of blood flow as a result of inevitable long-segment coverage of the descending aorta.
The other arterial repairs were internal carotid (2), ascending and arch of aorta (3), descending aorta (2), innominate artery (3) and pulmonary artery (1).
A CT angiogram was performed in 2006 which showed complete obstruction of proximal aspects of the descending aorta with well established collaterals (fig.
It covers technical issues, carotid artery disease and extracranial cerebrovascular disease, upper and lower extremity arterial disease, arteriovenous fistulas, catheterization-related complications, the abdominal aorta, renal artery disease, splanchnic/visceral arteries, venous disease of the upper and lower extremities, and intravascular ultrasound of the descending aorta and iliac arteries.
2) Steep left anterior oblique view is usually used during aortic angiography to identify abnormalities in the aortic arch and proximal descending aorta.
For evaluation of intravascular signal-to-noise ratio (SNR), a small region of interest (ROI) was manually placed in the most homogeneous possible regions of the following structures: right atrium (RA), left ventricle (LV), left atrium (LA), ascending aorta (As Ao), descending aorta (Desc Ao), and right pulmonary artery (RPA) (Figure 1).
This article discusses the diagnostic challenge and subsequent surgical management of complicated acute dissection of the descending aorta.