Cardiovascular · UKMLA & AKT
Thoracic aortic aneurysm
A free high-yield preview for the UKMLA Applied Knowledge Test. Below are the key points to recognise thoracic aortic aneurysm — the full SA Note notes add investigations, management, complications and 10 practice questions.
Key high-yield points
- Permanent dilatation of the thoracic aorta ≥1.5× expected normal diameter (true aneurysm - all 3 layers involved)
- Normal ascending aorta ~3.0-3.5 cm; descending ~2.0-2.5 cm
- Most common segment: ascending aorta; least common (highest operative risk): aortic arch
- Majority are asymptomatic - discovered incidentally on imaging
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