As a nurse in a (mostly) cardiac ward, I'll repeat some of the things other people have said. I don't think the kilt would be very practical for wear in the hospital, which mostly means in bed. It would be a shame to get even a casual kilt contaminated with the fluids that generally result from cardiac surgery, after all.

On the other hand, I don't think there would be anything wrong with tossing, say, a SportKilt in your chair to wear when you get up to walk the hall. It would be easy to fasten the velcro on, and it would solve the Problem of the Gown, which is another TMI issue waiting to happen. Plus, it would make getting ready to leave the hospital relatively simple. I have been known to curse under my breath when trying to help patients get ready to leave.

And yes, we nurses have seen everything you have to offer before, and no, we weren't impressed by it then, either. 8)