The handcuffing is part of the risk assessment process. The wounded person is handcuffed and searched to confirm that he/she isn't an actual risk. The person isn't 'unarmed' until an officer actually searches the individual for weapons. Until an officer searches a person they can 'potentially' be armed. In order to be searched, the potentially armed person is handcuffed and then searched no the other way around.
I find that disgusting.
I mean fucking hell, nearly everyone in the UK knows how to give CPR, recovery position, put pressure on wounds etc.
It doesn't matter what your job is, most companies put you through those courses.
Shit, you get taught that basic stuff in primary education....
That should pretty much tell you why police don't bother with doing very basic first aid. They see everyone as a potential offender and a potential offender is a potential enemy. And the life of a potential offender and enemy is worth far less than the police officer and anyone else.