Yea, generally Wikipedia has trustworthy information in this department. The stuff that you're most often going to need to ask us about concern stuff specifically concerned with clandestine or illicit use of this stuff. While there is not a Hydromorphone (Dilaudid) nasal-spray that I'm currently aware of, the point stands. I'm only telling you this in the hope that you can get yourself better answers, more quickly without having to rely on us!
So with that being said, the answer to your question is a yes and with that I think we can lock this one up, no? If you have other questions feel free to start another thread!