I am a male nurse and I never get someone to come in the room with me during patient care unless there is a reason that I need help. In my opinion, if they make men take females in pt rooms with them, then they should also make women take men in the room with them and how do they know who is gay or lesbian? A gay male nurse could just as well "do something" to a male pt.
This is stupid. I do, however, believe that, if after assessing the situation, you feel like you might need a "chaperon," then take one with you!
So, if someone is going to lie to try to sue you, then they are going to lie no matter if you take someone in the room with you or not. They can always say that you came back in the room later (after the chaperon left) and did something with them. If they're gonna lie, they're gonna lie.
This shouldn't be an issue.