Moderately dilated aortic root ; VSD and dental abscess

Hi,

I am 27 male & have a small VSD (currently 4mm) since birth. Last month I had a dental abscess and started taking amoxicilins (prophylaxis) after a week. Then I took an echo which shows "no evidence for infective endocarditis". However, the aortic root is moderately dilated (AO=39 mm) and the LA diameter is 45 mm.  
I am worried because my echo 3 years ago shows AO 34.5 and LA 35.

1) How accurate is the echo to identify infections?  Is it possible that aortic root enlargement is caused by bacterias considering the VSD?

2) My family doctor says that, given my age, normal BP, and the moderate size of aortic root, I should not be worried, and only recommends an echo a year from now. She also argues that since the echo machines were different (and in different countries), the new readings can not be compared to the old one. Any ideas / recommendations?

3) What can I do to keep my aortic root from further dilating :-) ?

Thanks

[Paderla Anitha, DNB]

Hello and hope you are doing well.

Understand your predicament.
With the aortic root dilatation is there any evidence of aortic regurgitation. Also, with VSD, pulmonary hypertension can occur. I would advise you to consult a cardiologist, so that he could further evaluate your condition.

Hope this helped and do keep us posted.