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| Arterial dissections | |
|---|---|
 | |
| Aortic dissection | |
| Specialty | Vascular surgery |
An arterial dissection is a tear within the wall of an artery, which allows blood to separate the wall layers. There are several types. Tears almost always occur in arterial walls, but a vein wall tear has been documented.[1]
By separating a portion of the wall of the artery (a layer of the tunica media or in some cases tunica intima), a tear creates two lumens or passages within the vessel, the original or true lumen, and the false lumen created by the new space within the wall of the artery. It is not yet clear if the tear in the innermost layer, the tunica intima, is secondary to the tear in the tunica media. Dissections originating in the tunica media are caused by disruption of the vasa vasorum. It is thought that dysfunction in the vasa vasorum is an underlying cause of dissections.[2]
- ^ Salgado OJ, Chacón RE, Alcalá A, Alvarez G (2005). "Vein wall dissection: a rare puncture-related complication of brachiocephalic fistula. Gray-scale and color Doppler sonographic findings". J Clin Ultrasound. 33 (9): 464–7. doi:10.1002/jcu.20171. PMID 16281272. S2CID 20589311.
- ^ Bax M, Romanov V, Junday K, Giannoulatou E, Martinac B, Kovacic JC, Liu R, Iismaa SE, Graham RM (2022). "Arterial dissections: Common features and new perspectives". Frontiers in Cardiovascular Medicine. 9. doi:10.3389/fcvm.2022.1055862. PMC 9763901. PMID 36561772.