"Are you a nurse?"

Translation: Ви медсестра?

[Bluthund]

So a nurse is a "honey sister" in Ukrainian? :D Or rather something like a "med(ical) sister" I guess? Anyways, it's a good mnemonic.

[Vinnfred]

Yes, it is a contraction from "medical sister" :) And you can call them with the full term, but it is very long, so shortened form is much common. But official name of the position is the full one.

[gaidhlig]

Is it used for both women and men?

[Vinnfred]

Well, man is obviously not a "sister" :) It is "медбрат" (the same logic here)