Monday, June 6, 2016

Q: What is the average expansion rate of Abdominal Aortic Aneurysm(AAA)? 


Answer:  0.5 cm/year

On average AAA expand with the rate of half centimeter/year.


Clinical significance: AAA is a clinical condition which goes unnoticed many times until rupture occur or get diagnosed during other clinical processes. And, if AAA is already diagnosed follow up should be undertaken very closely. Value of aortic diameter and rate of expansion largely influence the decision of surgical intervention. Prior imaging studies carries significant importance. If average yearly rate of expansion is more than 0.5 cm per year, surgical consult is required. There are various other factors involved in this process like smoking, hypertension etc. Many authorities have define  rapid expansion as aneurysms that increase in size more than or equal to 5 mm over a six-month time-period, or more than or equal to 10 mm over a year.

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