An hour is just a simple, easily remembered value, not a hard rule. If it takes 62 minutes or 58 minutes there's unlikely to be a difference.<p>The real cleverness is fast triage under duress and especially in mass casualty events where you may go from 1 patient per hour to a dozen in a minute as an entire rifle squad or whatever gets carried in. In those conditions you basically park the unlikely-to-survive round the back, the non lethal wounds off on the side, and try to solve for the hard middle cases: the abdominal injuries for example. And even those are sometimes just "clean up what you can, pack the cavity with a ton of gauze, sedate and get them to hospital in Germany asap"