First thing I'd do in an emergency situation like this would be to quickly shout for help, next priority get that door open by any means to see what condition my partner is in, next priority see if I can stem bleeding, whilst I'm stemming the blood my hands wouldn't be free to do anything else. As soon as I can do nothing more I would phone for help.
I don't know the situation with the panic buttons, but at this stage you're fully aware that you're not dealing with an intruder, you're dealing with a casualty. At that moment, shouting for a neighbour would probably be far quicker and more productive than anything security could do.