Do your nurses assume total care for ICU patients

At my hospital we stay with our patients. Even if it takes 8 hours and anastheisia is looking after the pt, getting vitals etc., you staywith your patient. Even if you have another patient in the ICU, you stay with your patient.
The only place we don't stay is the OR. We go down with them, make sure that they are secure on the OR table, give report off and leave. The pt will come back directly from the OR for us to resume care.

As an ICU nurse I would never have handed over care of my patient unless it was to a ward on discharge or other ICU on transfer. We would escort to radiology and stay there untill the procedure was complete.

We don't.
The ICU nurses stay with their pt.
We do transport them post-procedure.

If the ICU nurse can come great, if not it's up to the medical imaging nurse. In my case that only applies to CT and MRI. In cath lab it's up to their nurses, the primary does not come down.

What department?

The OP mentioned the patient was having an angio...

...well, if the icu pt is in angio then the angio nurse has the ball and the icu nurse is on the team but, in my experience, if the pt is paroxysmally incontinent or pukes or tries to die, the angio nurse backs away...

Thank you for your observation, ecnav.

However, I feel it is unfair of you to assign such disregard for duty to all angio nurses.

In our facility (and in others where I've worked), if the pt is in the care of the angio nurses (us ) we take care of whatever: restarting infiltrated IVs, changing empty IV bags, puking pts, toileting needs, codes . . . .

It's unfortunate/unprofessional for ANY nurse to ignore pt needs.

And now, back to your regularly-scheduled program.