My ascending aota is slightly enlarged at 3.9 .. doc
I would explain as follows:
Welcome back on -Ask a Doctor- service!
I understand your concern and would like to assure your that the actual ascending aorta diameter doesn't place you actually at any dangerous or life-threatening condition.
As the doctor has said, it is slightly above the upper normal range; anyway, what is most important in this situation seems to appear a careful follow up in time of the aortic diameter.
Now, returning to your main point of concern, whether the prescribed anti-hypertensive drug (hydrochlorothiazide 12.5 mg) is necessary and safe, I would like to explain that for the purpose of maintaining a lower pressure stress on the aortic walls it is advisable to correctly and properly control your blood pressure values.
Such a daily dose of Hydrochlorothiazide is relatively small and could not pose you at any increased risk of adverse effects.
Anyway, it is worth to carefully monitor your blood pressure values several times daily after the therapy start, in order to control its efficacy and prevent any minimal potential unwanted effects.
You should maintain BP values around 110/70 mmHg; higher values should be avoided to minimize further progression of aorta dilatation. So, if it is not achieved spontaneously, an anti-hypertensive therapy is needed.
After therapy initiation, a review should be done considering the resulting BP values.
Other alternative medications are available in case the first alternative doesn't fit well.
So, relax and don't worry about it!
The first step would be to frequently check your BP values for a couple of days up to a week. This will tell us for sure whether the drug is necessary.
If the average values are above the recommended values, then you need the therapy.
You are in time to take everything under control and prevent future adverse events.
Hope to have been helpful to you!