One of the more interesting ones is ESO's ESOsuite, for pre-hospital providers.
It has to deal with rough and spotty connectivity even during record creation, it has to handle sync between different providers (FD arrives first, starts gathering information, EMS arrives after to transport. How do you reconcile field values? It's one thing to coalesce provider interventions, but what about demographic discrepancies? "Just give the provider a choice between options" you think - not the biggest priority when approaching the hospital and stabilizing your patient, and not when you need to contact the hospital and give them said demographics and CC/HX/VS before you arrive).
It has to deal with rough and spotty connectivity even during record creation, it has to handle sync between different providers (FD arrives first, starts gathering information, EMS arrives after to transport. How do you reconcile field values? It's one thing to coalesce provider interventions, but what about demographic discrepancies? "Just give the provider a choice between options" you think - not the biggest priority when approaching the hospital and stabilizing your patient, and not when you need to contact the hospital and give them said demographics and CC/HX/VS before you arrive).