What if a person presents to the hospital with anaphylaxis that doesn't respond to multiple shots of epinephrine... what other steps are taken?

Fluid: Since some of the plasma (blood without the cells) has often gone out of the circulation to form the tissue swelling, people in anaphylactic shock often needs fluid replacement. If your heart rate is very slow during the shock (most cases have faster but faint heart rate), Atropine may be considered. They may also intubate you. The later you seek treatment, the worse the outcome.