AAA Flashcards
What is the definition of true dilation of the AA?
It is defined as >50% of expected diameter or
>3cm.
What is the mean diameter of normal AA?
2 cm.
What are the locations of AAA ?
– Infrarenal
– Suprarenal
– Juxtarenal
– Pararenal
90% of AAA are located ?
Infrarenal
What are the most common variants of AAA?
Fusiform and sacular
what percentage of AAA patients have associated femoral or popliteal artery
aneurysm?
25%
What is the presentation of most cases of AAA?
Asymptomatic and diagnosed incidentally.
What is the presentation of symptomatic AAA?
The main presentation is Vague epigastric, abdominal, and back pain. Acute limb ischaemia due to peripheral emobolisation known as bluetoe syndrome and referred testicular pain due to ureteral stretch can also be seen.
What is the main risk factor for AAA ?
Smoking has 10 times increased risk of causing and accelerating the expansion of AAA.
What are the general risk factors for AAA?
- 4 times more common in men than woman.
- 5% of the cases are seen in men >65.
- Uncontrolled HTN and family Hx of AAA.
- Connective tissue disorders such as Marfan syndrome.
What are the conservative management measures in AAA?
- Smoking cessation.
- Exercise & wt loss.
- Medications
What are the medications in AAA?
– B-blockers & ACEis to control HTN
– Statins to help reduce vessel wall inflammation
– Doxycycline (protease inhibition)
What is the main screening modality for AAA?
abdomina US which has 98% accuracy and is offered to men >65.
What is the average growth rate of AAA?
0.3cm/yr
What is the size and screening frequency of mildly dilated AAA?
(3-3.5cm)
Every 5 years