Well, here is my suggestion, in the iTunes store, when you search for EMT, there will be 5 Apps for the iPad. I think that "911 ToolKit" and "Paramedic Protocol Provider" are both apps that involve protocol procedures and all that. I'm not sure if it will have the charts that you're wanting, but I think that Paramedic Protocol Provider is a pretty cool app. It has space for notes, procedures/protocols, and other cool ****.
Check em out, it might be useful. The app does cost $7.99 and $9.99, respectively. Not sure if it'll ever go on sale, but just check it out.