Have to undergo possible surgery for a aneurysm on my aorta what is the average time and stay in the hospital for such a procedure?

Depends: Depends on the type of aneurysm repair you're having, whether endovascular/minimally-invasive or an "open repair, " using a rather large incision. The endovascular repair, which can be performed through a needle puncture in the groin, is typically a 1 day recovery barring any unforeseen complications. The open repair can be quite a bit longer. Discuss with your vascular surgeon.

Varies: Endovascular 0-3 days open 5-7 days some personal risk factors// or complications may prolong.