[Rtrorkt]

Originally Posted by john70t

Hospitals have huge central-air systems that are supposed to be filtered and sterile.
-What if there was a way to boost mainline pressure and hook up cycling nodes to vents?
-Calibrating supply pressure timing to the patients breathing rhythm would be the tricky part.
-There would have to be check valves to prevent spores from traveling upstream. (Perhaps in the replaceable mask/tube.)

Hospitals have sophisticated HVAC systems but none are "sterile". HEPA filtration on certain systems, OR's and other invasive spaces specifically, provide high air quality but not to the filtered extent needed to attach to a ventilator. Many OR's have additional filtration at the diffuser. Hospital are required to meet a minimum air change per hour in each space, though each space type differs. Long story to say i don't believe central systems can be used in this situation at the patient level.