Abdominal Aortic Aneurysm Quiz- Case 06 – WFUMB

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Question 1 of 2

1. Question
Clinical Description:

An 80 year old man presents with back pain.

Is there an abdominal aortic aneurysm?
- Yes, there is 6 cm aneurysm
- No, the aorta is 2.4 cm diameter
Correct

There is a 6cm AAA. When measuring the aorta, it is measured outer wall to outer wall to ensure any thrombus is included.

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Question 2 of 2

2. Question
Clinical Description:

75 yr old male. Sudden onset epigastric and back pain. Shocked, diaphoretic, ashen

Is measuring the lumen size is important in these circumstances?
- Yes, it will alter the surgical approach.
- Yes, it dictates if anticoagulation is required to prevent embolization.
- Yes, it predicts the future rate of aneurysm expansion so will dictate the required follow up.
- No, it has no relevance in this clinical setting.
Correct

Thrombus formation is common, particularly in larger aneurysms. It may be associated with more rapid aneurysm growth over time, but this is not relevant in the acute setting or once the aorta is above the threshold for intervention. Lumen size is only relevant if the presentation is of critical distal ischaemia (such as the rare and devastating cases of complete aortic thrombosis where no lumen and no flow is visible).

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