It all depends on what your role and responsiblities are. I asssume you report to the Nursing Deptarment and not to the IS Dept? Look at these meetings as IT's way of including you in "the loop" of communication. This is frequently not the case if you report to another department outside of IT/IS.
I'd also suggest you obtain an agenda as early as you can prior to the meetings and review it to/for:
1) make sure that the content is relevant to your role,
2) your input will be needed on some topic or to make a decision that allows the team to move forward,
3) a potential issue (or isssues) will inpact your area(s)
If you can't attend a meeting make sure you are cc'd on meeting minutes and that you communicate relevant content and changes to your superiors and area(s), etc.
If you think the scenario is that of "a sinking ship" even more reason to be aware of where all the life boats are!
Quote from KristinWW
at what point do you join meetings for an implementation?