I don't know about aneurysms in particular, but as an RN I remember that almost every operation (unless it was minor surgery) had an expected recovery period of 4-6 weeks. Sometimes more, sometimes less.

If you've been told to expect a recovery period of around 4 weeks, then that sounds about right.

If you are really concerned, maybe you could contact the secretary of another surgeon who does the same operation and ask him/her the hypothetical question. They may not answer, but it's worth a try.