The important thing is to make sure it is within reach at surgery. I am 80yrs and in 2014 I had 3 A-V fistulas embolized in my brain with awake anesthesia. It was done at Mayo in Jacksonville and I was very scared also. They reached the area thru my groin and I had no pain. I was told they do a similar procedure for aneurysms. I did well and have enjoyed many years after.Now they even have more advanced equipment and technology so be at peace, it will go well. Make sure you are referred to a reputable medical center. Good luck, the Lord will be with you
Dr. Picardi