What does aortic bifurcation mean?

What does aortic bifurcation mean?

The aortic bifurcation is the point at which the abdominal aorta bifurcates (forks) into the left and right common iliac arteries. The aortic bifurcation is usually seen at the level of L4, just above the junction of the left and right common iliac veins.

Where does the aorta bifurcate?

L4 level
Vascular Anatomy. The abdominal aorta bifurcates at the L4 level. The small median or middle sacral artery arises from the posterior surface of the abdominal aorta close to the bifurcation and descends vertically along the pelvic surface of the sacrum.

What level is bifurcation of aorta?

L4 vertebra
The aortic bifurcation mostly found at the level of L4 vertebra in the present study similar to previous studies. The aortic bifurcation can be a reliable landmark for determining the lumbar vertebral segments on MRI or CT.

What are the chances of surviving an aortic dissection?

Short-term and long-term survival rates after acute type A aortic dissection (TA-AAD) are unknown. Previous studies have reported survival rates between 52% and 94% at 1 year and between 45% and 88% at 5 years.

What does bifurcation mean in medical terms?

[bi-fur-ka´shun] 1. a division into two branches, such as a blood vessel, or a tooth that has two roots. Bifurcatio aortae (aortic bifurcation), showing the branching of the abdominal aorta into the common iliac arteries, and from there to the internal and external iliac arteries.

Where does the bifurcation occur in relation to the heart?

A coronary bifurcation lesion occurs at or near a division of a major coronary artery. Characterizing bifurcation lesions involves assessing the lesion morphology in three important anatomic segments: (1) proximal main branch (MB); (2) distal MB; and (3) side branch (SB).

What artery has the highest pressure?

the aorta
As shown in the figure, the aorta and arteries have the highest pressure. The mean aortic pressure (solid red line) is about 90 mmHg in a resting individual with normal arterial pressures.

What are bifurcates at T4?

T4 Carina (bifurcation of the trachea), Sternal angle (costal cartilages of the second rib articulates with the sternum), arch of aorta, division between superior and inferior mediastinum, azygos vein drains into superior vena cava.

At what level does the common iliac bifurcate?

The common iliac artery arises from the aortic bifurcation at the L4 level. The left and right common iliac arteries diverge while descending towards and into the pelvis on the medial aspect of the psoas major muscle.