Traumatic aortic rupture (traumatic thoracic aortic injury, TAI)
Traumatic aortic rupture is a potentially catastrophic consequence of high‑energy blunt chest trauma in which the aortic wall is partially or completely disrupted. Typical mechanisms are rapid deceleration injuries (high‑speed motor vehicle collisions, falls from height).
Many patients die at the scene; survivors usually have a contained or partial tear and require rapid recognition, controlled haemodynamics and urgent specialist management (vascular/cardiothoracic/Major Trauma Centre). (RCEM/RCR; NICE NG39)
Why this matters
- The aortic isthmus (just distal to the left subclavian artery) is the commonest site because of fixation by the ligamentum arteriosum; this location accounts for a large proportion of fatal and non‑fatal TAI.
- Survival depends on the extent and location of the tear, rapid stabilisation and quick access to definitive surgical or endovascular repair.
- Definitive repair is a specialist decision (thoracic endovascular aortic repair, TEVAR, is most common for descending injuries); the ED’s role is early recognition, haemodynamic control, imaging in the stable patient and organising definitive care.
Pathology and injury patterns TAI exists on a spectrum:
- Intimal tear with flap or intramural haematoma.
- Pseudoaneurysm.
- Partial or complete transection with mediastinal haemorrhage.
Important anatomic zones:
- Ascending aorta / root.