A change to angio will be stressful at first while you learn a new area. Your skills sound like they'd be perfect for that area.
Would you be taking call?
Would you work angio/interventional/Cath Lab, or just angio/interventional, or ? ? ?
If Cath Lab, is it a diagnostic or interventional lab?
Stress level rises and falls depending on, of course, what's happening w/your pt. Doing a high-risk pt in the Cath Lab who crashes can raise one's stress level.
So, is the area you're considering MORE high-stress than ICU?
Not knowing what kinds of pts you take in the ICU, and what kind of Angio area you'd be transferring to, I can't hazard a guess.
It's a different kind of stress.
The Rad. Depts and Cath Labs I've worked in offer more autonomy to the RN = good for an organized, self-driven competent individual.
Re: your radiation safety concern:
Inquire into the policies of the dept.
If you become pregnant while working in an area where you're exposed to radiation, your Radiation Safety Officer should have protocols set up.
Both times I became pregnant while working in Radiology, I notified TPTB IMMEDIATELY of my condition.
I was required to view a safety video and sign a document stating I had been informed of the risks of working in my area.
My colleague and I tested the aprons to see if they truly stopped all radiation (we put a test badge inside and wore it for a month to see if any levels showed; they did not).
I wore double aprons (front and back) while setting up and fled the fluoro room when fluoro was used (stayed in the Control booth) -- especially during the first trimester.
My kids were both born healthy and on time.
I was off call about two months before my due date (got really tired).
I worked the Friday before giving birth on Sunday.
In otherwords, it IS do-able; just make sure YOU and your baby are protected (I hope all who work with you are as protective as my co-workers were with me).
Hope the above helps; good luck! (BTW, I worked 21 yr in Radiology, which included staffing the Cath Lab, in one facility. I've worked in three other facilities' cath labs, for a total of 27 years in that area