Has anyone had the problem of your loved one not voiding for 12 to 24 hours? I am afraid that her kidneys are going to shut down!

In a word: Yes, I've been through this. But my father had a catheter and so there was very clearly a problem when I could see that no fluid went into the bag. I don't mean to sound like I'm doubting your experience, but how do you know for sure there is no urine output? Do they wear absorbent briefs, and they are dry..?

Any which way, it's a serious problem and I would suggest you take them to ER, just to be safe. Not passing urine can be indicative of serious problems, as you already know.

Have you called your loved one’s doctor about this?