All of this is pretty ill defined, but I think of closed loop as tracking the status of a message/alarm and ensuring that it receives a valid response from a live person - escalating as needed.
Suspending alarms anywhere other than the medical device itself seems to cross the line to device interoperability. Ditto for changing alarm limits, both of which would ideally be mobile and nurse-carried.
To be truly actionable, alarms must be accompanied by contextual data so the caregiver can screen false/positive alarms. Alarm fatigue is a result of several factors, but a predominate contributor is false/positive alarms. This is why the alarm "switches" in nurse call systems are next to worthless.
