Hi Billy,
There is not strict definition of enlarged versus dilated -- subjectly, I would say that I would use the word dilated for aortic roots that are larger than "enlarged" aortic roots, but the key factor is the measurement, not the wording. Either words, I cannot be specific about the difference between these words because there is not strict definition.
I would interpret this to mean that your aortic root is slightly larger than normal at the level of the sinus of valsalva, but nothing that I would take action on based on this report. It should be followed over time with routing MRI's or CT's to evaluate for enlargement and the rate of enlargement.
What's the ideal blood pressure for prevention of aortic root enlargement/dilatation?
Blood pressure is important, but so is the hearts force of contraction. First, you should be on a beta blocker to decrease the force or pressure change per unit time (the so called dp/dt). Second, the best blood pressure is the lowest blood pressure you can tolerate without symptoms. Unfortunately, neither of these measures guarantee that you will not progress. That is why your aortic should be imaged routinely.
I hope this helps.
What's more of concern is if the aortic root is large enough such that aortic dissection begins to become likely. This begins to become of concern when it exceeds about 5.0 cm. The other concern is the rate of progression. For example, an aortic root that is stable for years at 4.0 cm is less of a concern than one that in a two-year period progresses from 3.5 to 4.0 to 4.5 cm.
Were these data from echo readings, or from CT or MRA?
My aortic root was measured at 4.0 by the radiologists but my surgeon called it 4.5
Different folks look at and/or measure it differently is what I understood. So you might want another reading.
I was told that at greater than 4.0, it is called an aneurysm.
I am 59 year female, 8 weeks out of surgery where they replaced part of my aorta from the root up the ascending about 3 inches with a Dacron graft. Two weeks after surgery I was back to walking, able to do about two miles. Now I am back to four miles and some jogging. I feel great and I really have no regrets about doing the surgery.
Because of our family history (my sister dissected and died at 4.5 cm, as well a cousin but I don't know the size), my surgeon suggested I have surgery asap, even though rule of thumb is 5cm before surgery. I did and I am glad I did. For me it was the right choice.
Talk to doctors who have expertise in this area. It is a fixable problem in many cases. As well, in many cases, all you have to do is get it checked once or twice a year. Take care.
Also did not smoke and ate a healthier diet and tried to get my weight down about 10 lbs. In the two years my dilation did not change. However from what I was told, there are no set answers as to whose dilations grown or why. It is a gray area or so I was told. Since surgery I have been told I will remain on a low dose beta blocker and I will continue to moniter my bp and be scanned yearly. Hope this helps.
My dad's AAA was 7.8 cm when it was picked up so he was in fairly quickly for a stent, he was told he could have had it for 10+ years without knowing.