I just had this done a week ago! My procedure was an outpatient procedure. They finished in less than two hours. I was in recovery for two hours to make sure the femoral access point didn't bleed. I spent an hour at registration. An hour in prep. 1.45 hours on the table and two hours in recovery.

They gave me the lowest possible dose of Versed and Fentanyl for possible pain during femoral artery port insertion. I was completely awake the entire procedure and could barely tell I had been given anything. Which was just fine.

The insertion of the port into the femoral hurt like getting a shot with a needle. It felt odd but the very temporary pain at insertion was easy to deal with.

The only other thing that happened that was meaningful was when they release the contrast dye. Your face will feel warm when they release the contrast. You may experience the briefest possible minor disturbance in your vision or hearing but that is supposed to be rare. I did experience a significant effect on my sight and then on my hearing. I felt a bit faint each time but honestly, I found the effect to be fascinating if briefly disconcerting.

So, the only two things that happened was slight and very brief discomfort at initial insertion of the port in the femoral and then odd sensation when they release the dye. I was never nervous at all and nothing seemed scary.

I had a ruptured aneurysm in February last year. At that time, they had to open my skull and clip the ruptured aneurysm. They found two more aneurysms at that time. In September of last year, I had a flow diversion device inserted into my brain though my femoral in the exact same process as you will have your angiography.

A flow diversion device slows the force of blood into the aneurysm and allows it too shrink, scar over and within six months, disappear. This is the state of the art in treating un-ruptured aneurysms.

It's essentially a stent (picture a Chinese finger puzzle), made of platinum (unreactive) that they put in your cerebral artery. They use the same deployment device to insert the stent via the femoral artery. This procedure is much less invasive than opening the skull and clipping an aneurysm. It's also as or more effective than coils, depending on the aneurysm location and size.

I just had my six month follow-up last week as I said at the beginning of my comment. And one of my aneurysms is gone and the last one is smaller but still present. So progress. I get it checked again in another six months. The presence of the stent means a rupture very unlikely, according to my interventional radiologist.

If they decide your aneurysm needs to be treated, I strongly suggest you ask about a "flow diversion device" as a possible option as you weight your options.

PM me if you have any questions about my experiences. I am not a doctor and can't give you medical advice but I can relate my experiences.